CN203477295U - Oil way systems capable of achieving limp home and used on hydraulic-control automatic mechanical transmission and double-clutch transmission - Google Patents

Oil way systems capable of achieving limp home and used on hydraulic-control automatic mechanical transmission and double-clutch transmission Download PDF

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Publication number
CN203477295U
CN203477295U CN201320465829.XU CN201320465829U CN203477295U CN 203477295 U CN203477295 U CN 203477295U CN 201320465829 U CN201320465829 U CN 201320465829U CN 203477295 U CN203477295 U CN 203477295U
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China
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valve
oil
communicated
mechanical valve
mechanical
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Chinese (zh)
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王宇明
王天生
梅近仁
江兴宏
王振锁
杨庆
殷孝龙
李淑英
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United Automotive Electronic Systems Co Ltd
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United Automotive Electronic Systems Co Ltd
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Abstract

The utility model discloses oil way systems capable of achieving limp home and used on a hydraulic-control automatic mechanical transmission (AMT) and a double-clutch transmission (DCT). According to the oil way system capable of achieving limp home and used on the hydraulic-control automatic mechanical transmission, a hand-operated valve, a third switching valve, a third mechanical valve, a forth mechanical valve, a fifth mechanical valve and a corresponding hydraulic oil way are added on the oil way of the TMT; the third switching valve, the third mechanical valve and the forth mechanical valve are responsible for oil way switching between a normal working mode and a limp home mode; the hand-operated valve is used for distinguishing gears of P/R/N/D and switching the oil way under the limp home mode; the fifth mechanical valve is used for controlling the clutch of the limp home mode. The utility model further discloses the oil way system capable of achieving limp home and used on the double-clutch transmission, a hand-operated valve, a third switching valve, a fifth mechanical valve, a sixth mechanical valve, a seventh mechanical valve, an eighth mechanical valve and a corresponding oil way are added on the oil way of the DCT; the third switching valve, the fifth mechanical valve and the sixth mechanical valve are responsible for oil way switching between a normal working mode and a limp home mode; the hand-operated valve is used for distinguishing gears of P/R/N/D and switching the oil way under limp home mode; the seventh mechanical valve and the eighth mechanical are respectively used for controlling the odd number clutch and the even number clutch of the limp home mode. The oil way systems enable the AMT/DCT to achieve the function of limb home.

Description

The limp-home oil-way system of hydraulic control automatic gearbox and two clutch gearboxes
Technical field
The utility model is relevant with the hydraulic control system of automobile automatic (containing two clutches) gearbox, is specifically related to hydraulic control automatic gearbox and two clutch gearbox at the oil-way system of in emergency circumstances realizing limp-home of all driving Close Alls of gearbox electronic control unit TCU.
Background technique
At present, on market, the gearbox of main flow comprises five types of manual transmission (MT), automatic gearbox (AMT), double clutch gearbox (DCT), infinitely variable transmission (CVT) and hydraulic automatic gearboxes (AT).In these gearboxes, except manual transmission MT, only has the automatic transmission case AT that has equipped fluid torque converter (TC) in the situation that there is no gearbox electronic control unit (TCU) or gearbox electronic control unit TCU driving stage Close All, can rely on its inner mechanical/hydraulic structural design, form one or more static stalls, for vehicle provides the stop & go function of the basic row under the state of emergency, in this case as long as engine operation is normal, fault vehicle just can rely on the power of self to return to repair shop nearby so, realize the function of limp-home (Limp-Home).
The hydraulic circuit (take 2 grades as example) of conventional hyraulic controlled type automatic gearbox AMT, as shown in Figure 1, comprise hydraulic-pressure pump 1, the first solenoid valve 11, the second solenoid valve 12, the 3rd solenoid valve 13, the 4th solenoid valve 14, the 5th solenoid valve 15, the first mechanical valve 21, the second mechanical valve 22, the first switch valve 31, second switch valve 32, wherein the second mechanical valve 22 is three ten two way selected valves, and all the other each valves are two-bit triplet selector valve.The second solenoid valve 12 is for controlling wet clutch 2, the 3rd solenoid valve 13 is for Controlled cooling system 3, the first switch valve 31 and second switch valve 32 are for selecting the 4th solenoid valve 14, the 5th solenoid valve 15 and the first gearshift mechanism 4(comprise 1 grade and 2 gear shift shift forks, 1 grade and 2 gear shift oil hydraulic cylinders), the second gearshift mechanism 5(comprises 3 grades and 4 gear shift shift forks, 3 grades and 4 gear shift oil hydraulic cylinders), the 3rd gearshift mechanism 6(comprises 5 grades and R gear shift shift fork, 5 grades with R gear shift oil hydraulic cylinder) corresponding relation, the 4th solenoid valve 14 and the 5th solenoid valve 15 are for controlling and the first switch valve 31, the shift fork displacement of the gearshift mechanism that second switch valve 32 current states are corresponding.
The filler opening of the delivery outlet of hydraulic-pressure pump 1 and the first solenoid valve 11, the filler opening of the first mechanical valve 21 is communicated with, the control end of the first mechanical valve 21 is communicated with the oil outlet of the first solenoid valve 11, the filler opening of the oil outlet of the first mechanical valve 21 and the second solenoid valve 12, the filler opening of the 3rd solenoid valve 13, the filler opening of the 4th solenoid valve 14, the filler opening of the 5th solenoid valve 15, the filler opening of second switch valve 32, the filler opening of the first switch valve 31 is communicated with, the oil outlet of the second solenoid valve 12 is connected with wet clutch 2, the oil outlet of the 3rd solenoid valve 13 is connected with cooling system 3, the oil outlet of the first switch valve 31 is communicated with the right control end of the second mechanical valve 22, the oil outlet of second switch valve 32 is communicated with the left control end of the second mechanical valve 22.The second mechanical valve 22 has two filler openings, four return openings, three groups of oil outlets, and every group of oil outlet comprises two working holes (A mouth and B mouth), and oil outlet position as shown in Figure 4.As shown in Figure 1, the first working hole A1 of first group of oil outlet and 1 grade are communicated with a cavity volume (left side oil pocket) of 2 gear shift oil hydraulic cylinders, the second working hole B1 and 1 grade are communicated with No. two cavity volumes (right side oil pocket) of 2 gear shift oil hydraulic cylinders, the first working hole A2 of second group of oil outlet and 3 grades are communicated with a cavity volume (left side oil pocket) of 4 gear shift oil hydraulic cylinders, the second working hole B2 and 3 grades are communicated with No. two cavity volumes (right side oil pocket) of 4 gear shift oil hydraulic cylinders, the first working hole A3 of the 3rd group of oil outlet and 5 grades are communicated with a cavity volume (left side oil pocket) of R gear shift oil hydraulic cylinder, the second working hole B3 and 5 grades are communicated with No. two cavity volumes (right side oil pocket) of R gear shift oil hydraulic cylinder, a filler opening is communicated with the oil outlet of the 4th solenoid valve 14, another filler opening is communicated with the oil outlet of the 5th solenoid valve 15.
The hydraulic circuit (also take 2 grades as example) of the conventional two clutch gearbox DCT of hyraulic controlled type, as shown in Figure 7, comprise hydraulic-pressure pump 1', the first solenoid valve 41, the second solenoid valve 42, the 3rd solenoid valve 43, the 4th solenoid valve 44, the 5th solenoid valve 45, the 6th solenoid valve 46, the first mechanical valve 51, the second mechanical valve 52, the 3rd mechanical valve 53, the 4th mechanical valve 54, the first switch valve 61, second switch valve 62, wherein the second mechanical valve 52, the 3rd mechanical valve 53 and the 4th mechanical valve 54 are two eight logical selector valves, and all the other each valves are two-bit triplet selector valve.The second solenoid valve 42 is for Controlled cooling system 3', the 3rd solenoid valve 43 is for controlling odd number shaft clutch 2', the 4th solenoid valve 44 is for controlling even number shaft clutch 4', the first switch valve 61 and second switch valve 62 are for selecting the 5th solenoid valve 45, the 6th solenoid valve 46 and the first gearshift mechanism 5'(comprise 1 grade and 3 gear shift shift forks, 1 grade and 3 gear shift oil hydraulic cylinders), the second gearshift mechanism 6'(comprises 2 grades and 4 gear shift shift forks, 2 grades and 4 gear shift oil hydraulic cylinders), the 3rd gearshift mechanism 7'(comprises 5 grades and 7 gear shift shift forks, 5 grades and 7 gear shift oil hydraulic cylinders), the 4th gearshift mechanism 8'(comprises 6 grades and R gear shift shift fork, 6 grades with R gear shift oil hydraulic cylinder) corresponding relation, the 5th solenoid valve 45 and the 6th solenoid valve 46 are for controlling and the first switch valve 61, the shift fork displacement of the gearshift mechanism that second switch valve 62 current states are corresponding.
The filler opening of the delivery outlet of hydraulic-pressure pump 1' and the first solenoid valve 41, the filler opening of the first mechanical valve 51 is communicated with, the control end of the first mechanical valve 51 is communicated with the oil outlet of the first solenoid valve 41, the filler opening of the oil outlet of the first mechanical valve 51 and the second solenoid valve 42, the filler opening of the 3rd solenoid valve 43, the filler opening of the 4th solenoid valve 44, the filler opening of the 5th solenoid valve 45, the filler opening of the 6th solenoid valve 46, the filler opening of the first switch valve 61, the filler opening of second switch valve 62 is communicated with, the oil outlet of the second solenoid valve 42 is connected with cooling system 3', the oil outlet of the 3rd solenoid valve 43 is connected with odd number shaft clutch 2', the oil outlet of the 4th solenoid valve 44 is connected with even number shaft clutch 4', the oil outlet of the first switch valve 61 is communicated with the control end of the second mechanical valve 52, the control end of the oil outlet of second switch valve 62 and the 3rd mechanical valve 53, the control end of the 4th mechanical valve 54 is communicated with.The second mechanical valve 52, the 3rd mechanical valve 53 and the 4th mechanical valve 54 all have two filler openings, two return openings, (one group of oil outlet comprises two working hole A to two groups of oil outlets, B), as shown in figure 11, an oil inlet P 1 of the second mechanical valve 52 is communicated with the oil outlet of the 5th solenoid valve 45, another oil inlet P 2 is communicated with the oil outlet of the 6th solenoid valve 46, first group of oil outlet (A1 of the second mechanical valve 52, B1) respectively with two filler opening (P1 of the 3rd mechanical valve 53, P2) be communicated with, second group of oil outlet (A2, B2) respectively with two filler opening (P1 of the 4th mechanical valve 54, P2) be communicated with.The first working hole A1 of 53 first groups of oil outlets of the 3rd mechanical valve and 1 grade are communicated with a cavity volume (left side oil pocket) of 3 gear shift oil hydraulic cylinders, the second working hole B1 and 1 grade are communicated with No. two cavity volumes (right side oil pocket) of 3 gear shift oil hydraulic cylinders, the first working hole A2 of second group of oil outlet and 2 grades are communicated with a cavity volume (left side oil pocket) of 4 gear shift oil hydraulic cylinders, and the second working hole B2 and 2 grades are communicated with No. two cavity volumes (right side oil pocket) of 4 gear shift oil hydraulic cylinders; The first working hole A1 of 54 first groups of oil outlets of the 4th mechanical valve and 5 grades are communicated with a cavity volume (left side oil pocket) of 7 gear shift oil hydraulic cylinders, the second working hole B1 and 5 grades are communicated with No. two cavity volumes (right side oil pocket) of 7 gear shift oil hydraulic cylinders, the first working hole A2 of second group of oil outlet and 6 grades are communicated with a cavity volume (left side oil pocket) of R gear shift oil hydraulic cylinder, and the second working hole B2 and 6 grades are communicated with No. two cavity volumes (right side oil pocket) of R gear shift oil hydraulic cylinder.
AT compares with hydraulic automatic gearbox, conventional automatic gearbox AMT and two clutch gearbox DCT, in the situation that there is no gearbox electronic control unit TCU or TCU driving stage Close All, gearbox is just got back to neutral gear (N), de-the carrying of motor got back to idling, and fault vehicle runs out of steam at once.In this case, driver can only be by fault vehicle sliding to safety zone and wait for rescue, fault vehicle does not possess and only relies on self power to return the ability of factory.
Model utility content
Technical problem to be solved in the utility model is to provide the limp-home oil-way system of a kind of hydraulic control automatic gearbox and two clutch gearboxes, can change existing hydraulic circuit, make it in the situation that there is no TCU or TCU driving stage Close All, can not realize limp-home.
For solving the problems of the technologies described above, the limp-home oil-way system of the hydraulic control automatic gearbox that the utility model provides, comprise hydraulic-pressure pump, manually operated valve, the first solenoid valve, the second solenoid valve, the 3rd solenoid valve, the 4th solenoid valve, the 5th solenoid valve, the first mechanical valve, the second mechanical valve, the 3rd mechanical valve, the 4th mechanical valve, the 5th mechanical valve, the first switch valve, second switch valve, the 3rd switch valve, wet clutch, cooling system, the first gearshift mechanism, the second gearshift mechanism and the 3rd gearshift mechanism, wherein, described the first solenoid valve and the first mechanical valve are for reconciling the delivery pressure of hydraulic-pressure pump for system oil pressure, this system oil pressure is exported by the first mechanical valve, described the second solenoid valve and the 4th mechanical valve are for controlling the wet clutch under normal mode of operation, and described the 5th mechanical valve and the 4th mechanical valve are for controlling the wet clutch under limp-home mode, described the 3rd solenoid valve and the 4th mechanical valve are for Controlled cooling system, described the first switch valve, second switch valve and the second mechanical valve are used for selecting the first gearshift mechanism or the second gearshift mechanism or the 3rd gearshift mechanism, described the 4th solenoid valve, the 5th solenoid valve and the second mechanical valve are for controlling the gear switch of the gearshift mechanism corresponding with the first switch valve, second switch valve working state, described the 3rd switch valve, the 3rd mechanical valve and the 4th mechanical valve are switched for the oil circuit of normal mode of operation and limp-home mode, described manually operated valve switches for differentiation and the oil circuit of the P/R/N under limp-home mode, D shelves.
In said system, when gearbox electronic control unit normal mode of operation, gearbox electronic control unit is controlled the 3rd switch valve in open mode, the main oil pressure of hydraulic-pressure pump output is through the first solenoid valve, the first mechanical valve output system oil pressure, through the 3rd switch valve and the 3rd mechanical valve, export again the filler opening of the second solenoid valve to, the filler opening of the 3rd solenoid valve, the filler opening of the 4th solenoid valve, the filler opening of the 5th solenoid valve, the filler opening of the first switch valve, the filler opening of second switch valve, simultaneously, the 3rd mechanical valve makes the control end of the 4th mechanical valve, the control end of the 5th mechanical valve and filler opening are communicated with low pressure oil way, wet clutch is controlled by the second solenoid valve and the 4th mechanical valve, cooling system is controlled by the 3rd solenoid valve and the 4th mechanical valve, and three gearshifts are controlled by the 4th solenoid valve, the 5th solenoid valve, the first switch valve, second switch valve, the second mechanical valve and the 4th mechanical valve,
When gearbox electronic control unit driving stage Close All, enter limp-home mode, gearbox electronic control unit is controlled the 3rd switch valve in closed condition, the main oil pressure of hydraulic-pressure pump output is through the first solenoid valve, the first mechanical valve output system oil pressure, through manually operated valve and the 3rd mechanical valve, export the 4th mechanical valve to again, the 5th mechanical valve, simultaneously, the filler opening of the second solenoid valve, the filler opening of the 3rd solenoid valve, the filler opening of the 4th solenoid valve, the filler opening of the 5th solenoid valve, the filler opening of the first switch valve, the filler opening of second switch valve is communicated with low pressure oil way, wet clutch is controlled by the 5th mechanical valve.
Preferably, the delivery outlet of hydraulic-pressure pump is communicated with the filler opening of the first solenoid valve, the filler opening of the first mechanical valve, the control end of the first mechanical valve is communicated with the oil outlet of the first solenoid valve, the oil outlet of the first mechanical valve is communicated with the filler opening of the filler opening of manually operated valve, the 3rd switch valve, and the control end of the 3rd mechanical valve is communicated with the oil outlet of the 3rd switch valve, the 3rd mechanical valve has two groups of working oil path, the filler opening of first group of working oil path is communicated with the filler opening of the 3rd switch valve, the oil outlet of first group of working oil path with the filler opening of the second solenoid valve, the filler opening of the filler opening of the 3rd solenoid valve, the 4th solenoid valve, the filler opening of the filler opening of the 5th solenoid valve, second switch valve, the filler opening of the first switch valve be communicated with, the filler opening of second group of working oil path is communicated with the oil outlet of manually operated valve, and the control end of the filler opening of the oil outlet of second group of working oil path and the 5th mechanical valve and control end, the 4th mechanical valve is communicated with, the 4th mechanical valve has three groups of working oil path, the first hydraulic fluid port of first group of working oil path is communicated with the oil outlet of the second solenoid valve, the second hydraulic fluid port of first group of working oil path is communicated with the oil outlet of the 5th solenoid valve, the oil outlet of first group of working oil path is connected to wet clutch, the first hydraulic fluid port of second group of working oil path is communicated with the oil outlet of the 3rd solenoid valve, the second hydraulic fluid port of second group of working oil path is communicated with the filler opening of the 5th mechanical valve, the oil outlet of second group of working oil path is connected to cooling system, the first hydraulic fluid port of the 3rd group of working oil path is communicated with the first working hole of first group of oil outlet of the second mechanical valve, the second hydraulic fluid port of the 3rd group of working oil path is communicated with the filler opening of the 5th mechanical valve, the oil outlet of the 3rd group of working oil path is communicated with a cavity volume of the first gearshift mechanism, No. two cavity volumes of the second working hole of first group of oil outlet of the second mechanical valve and the first gearshift mechanism are communicated with, a cavity volume of the first working hole of second group of oil outlet and the second gearshift mechanism is communicated with, No. two cavity volumes of the second working hole and the second gearshift mechanism are communicated with, a cavity volume of the first working hole of the 3rd group of oil outlet and the 3rd gearshift mechanism is communicated with, and No. two cavity volumes of the second working hole and the 3rd gearshift mechanism are communicated with, a filler opening of the second mechanical valve is communicated with the oil outlet of the 4th solenoid valve, another filler opening is communicated with the oil outlet of the 5th solenoid valve, the oil outlet of the first switch valve is communicated with the right control end of the second mechanical valve, and the oil outlet of second switch valve is communicated with the left control end of the second mechanical valve.
The limp-home oil-way system of the two clutch gearboxes of another kind of hydraulic control that the utility model provides, comprise hydraulic-pressure pump, manually operated valve, oil hydraulic cylinder, the first solenoid valve, the second solenoid valve, the 3rd solenoid valve, the 4th solenoid valve, the 5th solenoid valve, the 6th solenoid valve, the first mechanical valve, the second mechanical valve, the 3rd mechanical valve, the 4th mechanical valve, the 5th mechanical valve, the 6th mechanical valve, the 7th mechanical valve, the 8th mechanical valve, the first switch valve, second switch valve, the 3rd switch valve, cooling system, odd number shaft clutch, even number shaft clutch, the first gearshift mechanism, the second gearshift mechanism, the 3rd gearshift mechanism and the 4th gearshift, wherein, described the first solenoid valve and the first mechanical valve are for reconciling the delivery pressure of hydraulic-pressure pump for system oil pressure, this system oil pressure is exported by the first mechanical valve, described the 3rd solenoid valve and the 6th mechanical valve are for controlling the odd number shaft clutch under normal mode of operation, and described the 7th mechanical valve and the 6th mechanical valve are for controlling the odd number shaft clutch under limp-home mode, described the 4th solenoid valve and the 6th mechanical valve are for controlling the even number shaft clutch under normal mode of operation, and described the 8th mechanical valve and the 6th mechanical valve are for controlling the even number shaft clutch under limp-home mode, described the second solenoid valve and the 6th mechanical valve are for Controlled cooling system, described the first switch valve, second switch valve and the second mechanical valve, the 3rd mechanical valve, the 4th mechanical valve are used for selecting the first gearshift mechanism or the second gearshift mechanism or the 3rd gearshift mechanism or the 4th gearshift, described the 5th solenoid valve, the 6th solenoid valve and the second mechanical valve, the 3rd mechanical valve, the 4th mechanical valve are for controlling the gear switch of the gearshift mechanism corresponding with the first switch valve, second switch valve working state, described the 3rd switch valve, the 5th mechanical valve and the 6th mechanical valve are switched for the oil circuit of normal mode of operation and limp-home mode, described manually operated valve switches for differentiation and the oil circuit of P/N, R under limp-home mode, D shelves, described oil hydraulic cylinder is for controlling the 6th mechanical valve, the 7th mechanical valve and the 8th mechanical valve under limp-home mode.
In said system, when gearbox electronic control unit normal mode of operation, gearbox electronic control unit is controlled the 3rd switch valve in open mode, the main oil pressure of hydraulic-pressure pump output is through the first solenoid valve, the first mechanical process output system oil pressure, through the 3rd switch valve and the 5th mechanical valve, export again the filler opening of the second solenoid valve to, the filler opening of the 3rd solenoid valve, the filler opening of the 4th solenoid valve, the filler opening of the 5th solenoid valve, the filler opening of the 6th solenoid valve, the filler opening of the first switch valve, the filler opening of second switch valve, simultaneously, the 5th mechanical valve makes the control end of the 6th mechanical valve, the filler opening of the 7th mechanical valve and control end, the filler opening of the 8th mechanical valve and control end, the left and right oil pocket of oil hydraulic cylinder is communicated with low pressure oil way, odd number shaft clutch is controlled by the 3rd solenoid valve and the 6th mechanical valve, even number shaft clutch is controlled by the 4th solenoid valve and the 6th mechanical valve, cooling system is controlled by the second solenoid valve and the 6th mechanical valve, and four gearshifts are controlled by the 5th solenoid valve, the 6th solenoid valve, the first switch valve, second switch valve, the second mechanical valve, the 3rd mechanical valve, the 4th mechanical valve, the 6th mechanical valve,
When gearbox electronic control unit driving stage Close All, enter limp-home mode, gearbox electronic control unit is controlled the 3rd switch valve in closed condition, the main oil pressure of hydraulic-pressure pump output is through the first solenoid valve, the first mechanical valve output system oil pressure, through manually operated valve and the 5th mechanical valve, export hydraulic jack and the 7th mechanical valve to again, or export oil hydraulic cylinder and the 8th mechanical valve to, simultaneously, the filler opening of the second solenoid valve, the filler opening of the 3rd solenoid valve, the filler opening of the 4th solenoid valve, the filler opening of the 5th solenoid valve, the filler opening of the 6th solenoid valve, the filler opening of the first switch valve, the filler opening of second switch valve is communicated with low pressure oil way, odd number shaft clutch is controlled by the 7th mechanical valve and the 6th mechanical valve, even number shaft clutch is controlled by the 8th mechanical valve and the 6th mechanical valve.
Preferably, the delivery outlet of hydraulic-pressure pump is communicated with the filler opening of the first solenoid valve, the filler opening of the first mechanical valve, the control end of the first mechanical valve is communicated with the oil outlet of the first solenoid valve, the oil outlet of the first mechanical valve is communicated with the filler opening of the filler opening of manually operated valve, the 3rd switch valve, and the control end of the 5th mechanical valve is communicated with the oil outlet of the 3rd switch valve, the 5th mechanical valve has three groups of working oil path, the filler opening of first group of working oil path is communicated with the filler opening of the 3rd switch valve, the filler opening of the oil outlet of first group of working oil path and the second solenoid valve, the filler opening of the 3rd solenoid valve, the filler opening of the 4th solenoid valve, the filler opening of the 5th solenoid valve, the filler opening of the 6th solenoid valve, the filler opening of the first switch valve, the filler opening of second switch valve is communicated with, the filler opening of second group of working oil path is communicated with the first oil outlet of manually operated valve, the filler opening of the oil outlet of second group of working oil path and the 8th mechanical valve and control end, the right side oil pocket of oil hydraulic cylinder is communicated with, the filler opening of the 3rd group of working oil path is communicated with the second oil outlet of manually operated valve, the oil outlet of the 3rd group of working oil path and filler opening and the control end of the 7th mechanical valve, the left side oil pocket of oil hydraulic cylinder is communicated with, oil outlet in the middle of oil hydraulic cylinder is communicated with the control end of the 6th mechanical valve, the oil outlet of the first switch valve is communicated with the control end of the second mechanical valve, and the oil outlet of second switch valve is communicated with the control end of the 3rd mechanical valve, the control end of the 4th mechanical valve, a filler opening of the second mechanical valve is communicated with the oil outlet of the 5th solenoid valve, another filler opening is communicated with the oil outlet of the 6th solenoid valve, first group of oil outlet of the second mechanical valve is communicated with two filler openings of the 3rd mechanical valve respectively, second group of oil outlet is communicated with two filler openings of the 4th mechanical valve respectively, a cavity volume of the first working hole of first group of oil outlet of the 3rd mechanical valve and the first gearshift mechanism is communicated with, No. two cavity volumes of the second working hole and the first gearshift mechanism are communicated with, a cavity volume of the first working hole of second group of oil outlet and the second gearshift mechanism is communicated with, the second working hole is communicated with the filler opening of the 4th group of working oil path of the 6th mechanical valve, a cavity volume of the first working hole of first group of oil outlet of the 4th mechanical valve and the 3rd gearshift mechanism is communicated with, No. two cavity volumes of the second working hole and the 3rd gearshift mechanism are communicated with, the first working hole of second group of oil outlet is communicated with the filler opening of the 5th group of working oil path of the 6th mechanical valve, No. two cavity volumes of the second working hole and the 4th gearshift mechanism are communicated with, the 6th mechanical valve has five groups of working oil path, the first hydraulic fluid port of first group of working oil path is communicated with the oil outlet of the second solenoid valve, the second hydraulic fluid port of first group of working oil path is communicated with the oil outlet of oil hydraulic cylinder, the oil outlet of first group of working oil path is connected to cooling system, the first hydraulic fluid port of second group of working oil path is communicated with the oil outlet of the 3rd solenoid valve, the second hydraulic fluid port of second group of working oil path is communicated with the oil outlet of the 7th mechanical valve, the oil outlet of second group of working oil path is connected to odd number shaft clutch, the first hydraulic fluid port of the 3rd group of working oil path is communicated with the oil outlet of the 4th solenoid valve, the second hydraulic fluid port of the 3rd group of working oil path is communicated with the oil outlet of the 8th mechanical valve, the oil outlet of the 3rd group of working oil path is connected to even number shaft clutch, the first hydraulic fluid port of the 4th group of working oil path is communicated with the second working hole of second group of oil outlet of the 3rd mechanical valve, the second hydraulic fluid port of the 4th group of working oil path is communicated with the oil outlet of oil hydraulic cylinder, No. two cavity volumes of the oil outlet of the 4th group of working oil path and the second gearshift mechanism are communicated with, the first hydraulic fluid port of the 5th group of working oil path is communicated with the first working hole of second group of oil outlet of the 4th mechanical valve, the second hydraulic fluid port of the 5th group of working oil path is communicated with the oil outlet of oil hydraulic cylinder, a cavity volume of the oil outlet of the 5th group of working oil path and the 4th gearshift mechanism is communicated with.
Adopt oil-way system of the present utility model can make hydraulic control AMT/DCT gearbox possess at present the exclusive limp-home function of AT gearbox on the market, improved reliability and the convenience of system; Wherein, for hydraulic control AMT, when TCU cisco unity malfunction, close after all driving stages, driver can make motor remain on the mode on certain rotating speed threshold values by handle is pushed to the D position pedal of stepping on the throttle simultaneously, realizes 2 grades of limp-home; For hydraulic control DCT, when TCU cisco unity malfunction, close after all driving stages, driver equally can be by push handle on the D position pedal of stepping on the throttle simultaneously, make motor remain on the mode on certain rotating speed threshold values, realize 2 grades of limp-home, in addition, driver can also be by push handle on the R position pedal of stepping on the throttle simultaneously, make motor remain on the mode on certain rotating speed threshold values, realize reverse gear and travel.
Accompanying drawing explanation
Fig. 1 is 2 grades of hydraulic schematic diagrams of existing hyraulic controlled type automatic gearbox AMT;
Fig. 2 is 2 grades of hydraulic schematic diagrams of hyraulic controlled type automatic gearbox normal mode of operation of the present utility model;
Fig. 3 is 2 grades of hydraulic schematic diagrams of hyraulic controlled type automatic gearbox limp-home mode of the present utility model;
Fig. 4 is the oil outlet schematic diagram of the second mechanical valve in hyraulic controlled type automatic gearbox of the present utility model;
Fig. 5 is the oil circuit schematic diagram of the 3rd mechanical valve in hyraulic controlled type automatic gearbox of the present utility model;
Fig. 6 is the oil circuit schematic diagram of the 4th mechanical valve in hyraulic controlled type automatic gearbox of the present utility model;
Fig. 7 is 2 grades of hydraulic schematic diagrams of the two clutch gearbox DCT of existing hyraulic controlled type;
Fig. 8 is 2 grades of hydraulic schematic diagrams of the two clutch gearbox normal mode of operation of hyraulic controlled type of the present utility model;
Fig. 9 is 2 grades of hydraulic schematic diagrams of the two clutch gearbox limp-home mode of hyraulic controlled type of the present utility model;
Figure 10 is the R shelves hydraulic schematic diagram of the two clutch gearbox limp-home mode of hyraulic controlled type of the present utility model;
Figure 11 be in the two clutch gearboxes of hyraulic controlled type of the present utility model second and third, the oil circuit schematic diagram of four mechanical valve;
Figure 12 is the oil circuit schematic diagram of the 5th mechanical valve in the two clutch gearboxes of hyraulic controlled type of the present utility model;
Figure 13 is the oil circuit schematic diagram of the 6th mechanical valve in the two clutch gearboxes of hyraulic controlled type of the present utility model.
Wherein description of reference numerals is as follows:
1 is hydraulic-pressure pump; 2 is wet clutch; 3 is cooling system; 4 is the first gearshift mechanism; 5 is the second gearshift mechanism; 6 is the 3rd gearshift mechanism; 7 is manually operated valve; 11 is the first solenoid valve; 12 is the second solenoid valve; 13 is the 3rd solenoid valve; 14 is the 4th solenoid valve; 15 is the 5th solenoid valve; 21 is the first mechanical valve; 22 is the second mechanical valve; 23 is the 3rd mechanical valve; 24 is the 4th mechanical valve; 25 is the 5th mechanical valve; 31 is the first switch valve; 32 is second switch valve; 33 is the 3rd switch valve;
1' is hydraulic-pressure pump; 2' is odd number shaft clutch; 3' is cooling system; 4' is even number shaft clutch; 5' is the first gearshift mechanism; 6' is the second gearshift mechanism; 7' is the 3rd gearshift mechanism; 8' is the 4th gearshift mechanism; 9' is manually operated valve; 10' is oil hydraulic cylinder; 41 is the first solenoid valve; 42 is the second solenoid valve; 43 is the 3rd solenoid valve; 44 is the 4th solenoid valve; 45 is the 5th solenoid valve; 46 is the 6th solenoid valve; 51 is the first mechanical valve; 52 is the second mechanical valve; 53 is the 3rd mechanical valve; 54 is the 4th mechanical valve; 55 is the 5th mechanical valve; 56 is the 6th mechanical valve; 57 is the 7th mechanical valve; 58 is the 8th mechanical valve; 61 is the first switch valve; 62 is second switch valve; 63 is the 3rd switch valve.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
The limp-home oil-way system of the hydraulic control automatic gearbox AMT that the utility model provides, as shown in Figure 2 and Figure 3, compare with conventional automatic gearbox AMT hydraulic system (shown in Fig. 1), manually operated valve 7, the 3rd switch valve 33, the 3rd mechanical valve 23, the 4th mechanical valve 24 and the 5th mechanical valve 25 have been increased, wherein the 3rd mechanical valve 23 is two six-way transfer valves, the 4th mechanical valve 24 is two nine logical selector valves, manually operated valve 7 is four three-way diverter valves, and the 3rd switch valve 33 and the 5th mechanical valve 25 are two-bit triplet selector valve.The 3rd switch valve 33, the 3rd mechanical valve 23, the 4th mechanical valve 24 are switched for the oil circuit of controlling between normal mode of operation and limp-home mode, manually operated valve 7 switches for differentiation and the oil circuit of P/R/N, D gear under limp-home mode, and the 5th mechanical valve 25 is for controlling the wet clutch 2 under limp-home mode.
Except aforementioned 5 valves, other each valve role is consistent with the effect in conventional hydraulic control automatic gearbox, wherein, delivery pressure and the engine speed of hydraulic-pressure pump 1 are linear, the first solenoid valve 11 and the first mechanical valve 21 reconcile the delivery pressure of hydraulic-pressure pump 1 for system oil pressure and by the first mechanical valve 21 outputs, the second solenoid valve 12 and the 4th mechanical valve 24 are for controlling the wet clutch 2 under normal mode of operation, the 3rd solenoid valve 13 and the 4th mechanical valve 24 are for Controlled cooling system 3, the first switch valve 31, second switch valve 32 and the second mechanical valve 22 are for selecting the first gearshift mechanism 4 or the second gearshift mechanism 5 or the 3rd gearshift mechanism 6, the 4th solenoid valve 14, the 5th solenoid valve 15 and the second mechanical valve 22 are for controlling and the first switch valve 31, the gear switch of the gearshift mechanism that second switch valve 32 current states are corresponding.
The delivery outlet of hydraulic-pressure pump 1 is communicated with the filler opening of the first solenoid valve 11, the filler opening of the first mechanical valve 21, the control end of the first mechanical valve 21 is communicated with the oil outlet of the first solenoid valve 11, the oil outlet of the first mechanical valve 21 is with the filler opening of manually operated valve 7, the filler opening of the 3rd switch valve 33, the 3rd mechanical valve 23 mono-tunnel oil inlet P 1 are communicated with, and the control end of the 3rd mechanical valve 23 is communicated with the oil outlet of the 3rd switch valve 33.
The 3rd mechanical valve 23 has two groups of working oil path, as Fig. 5, Fig. 2, shown in Fig. 3, the oil inlet P 1 of first group of working oil path is communicated with the oil outlet of the first mechanical valve 21, the oil outlet A1 of first group of working oil path and the filler opening of the second solenoid valve 12, the filler opening of the 3rd solenoid valve 13, the filler opening of the 4th solenoid valve 14, the filler opening of the 5th solenoid valve 15, the filler opening of second switch valve 32, the filler opening of the first switch valve 31 is communicated with, the oil inlet P 2 of second group of working oil path is communicated with the oil outlet of manually operated valve 7, the oil outlet A2 of second group of working oil path and filler opening and the control end of the 5th mechanical valve 25, the two-way hydraulic fluid port Q2 of the 4th mechanical valve 24, Q3 and control end are communicated with.
The 4th mechanical valve 24 has three groups of working oil path, as Fig. 6, Fig. 2, shown in Fig. 3, the first hydraulic fluid port P1 of first group of working oil path is communicated with the oil outlet of the second solenoid valve 12, the oil outlet A1 of first group of working oil path is connected to wet clutch 2, the second hydraulic fluid port Q1 of first group of working oil path is communicated with the oil outlet of the 5th solenoid valve 25, the first hydraulic fluid port P2 of second group of working oil path is communicated with the oil outlet of the 3rd solenoid valve 13, the oil outlet A2 of second group of working oil path is connected to cooling system 3, the second hydraulic fluid port Q2 of second group of working oil path is communicated with the oil outlet A2 of 23 second groups of working oil path of the 3rd mechanical valve, the first hydraulic fluid port P3 of the 3rd group of working oil path is communicated with the first working hole A1 of 22 first groups of oil outlets of the second mechanical valve, the oil outlet A3 of the 3rd group of working oil path and 1 grade are communicated with a cavity volume (left side oil pocket) of 2 gear shift oil hydraulic cylinders, the second hydraulic fluid port Q3 of the 3rd group of working oil path is communicated with the oil outlet A2 of 23 second groups of working oil path of the 3rd mechanical valve.
The second working hole B1 of 22 first groups of oil outlets of the second mechanical valve and 1 grade are communicated with No. two cavity volumes (right side oil pocket) of 2 gear shift oil hydraulic cylinders, the first working hole A2 of second group of oil outlet and 3 grades are communicated with a cavity volume (left side oil pocket) of 4 gear shift oil hydraulic cylinders, the second working hole B2 and 3 grades are communicated with No. two cavity volumes (right side oil pocket) of 4 gear shift oil hydraulic cylinders, the first working hole A3 of the 3rd group of oil outlet and 5 grades are communicated with a cavity volume (left side oil pocket) of R gear shift oil hydraulic cylinder, the second working hole B3 and 5 grades are communicated with No. two cavity volumes (right side oil pocket) of R gear shift oil hydraulic cylinder.A filler opening of the second mechanical valve 22 is communicated with the oil outlet of the 4th solenoid valve 14, another filler opening is communicated with the oil outlet of the 5th solenoid valve 15, the oil outlet of the first switch valve 31 is communicated with the right control end of the second mechanical valve 22, and the oil outlet of second switch valve 32 is communicated with the left control end of the second mechanical valve 22.
When gearbox electronic control unit TCU is during in normal mode of operation, as shown in Figure 2, the 3rd switch valve 33 under the control of TCU all the time in open mode, and the control end of output system oil pressure to the three mechanical valve 23.Be subject to the impact of the 3rd switch valve 33, the output of the 3rd mechanical valve 23 shielding manually operated valves 7, system oil pressure (output oil pressure of the first mechanical valve 21) is communicated with the filler opening of the second solenoid valve 12, the 3rd solenoid valve 13, the 4th solenoid valve 14, the 5th solenoid valve 15, the first switch valve 31, second switch valve 32, meanwhile, the 3rd mechanical valve 23 is communicated with low pressure oil way with the control end of the 4th mechanical valve 24, filler opening and the control end of the 5th mechanical valve 25.Under the impact of low pressure oil way, the 4th mechanical valve 24 makes wet clutch 2 controlled by the second solenoid valve 12, and cooling system 3 is controlled by the 3rd solenoid valve 13.Under the oil pressure of the first switch valve 31, second switch valve 32, the 4th solenoid valve 14, the 5th solenoid valve 15 is controlled, the gear relation of first, second and third gearshift mechanism 4,5,6 is as shown in table 1, wherein H represents that valve is in high oil pressure state, and L represents that valve is in low oil pressure state.
Each grade of control logic under table 1AMT normal mode of operation
The 3rd switch valve 33 Gear The first switch valve 31 Second switch valve 32 The 4th solenoid valve 14 The 5th solenoid valve 15
H 1 L H L H
H 2 L H H L
H 3 L L L H
H 4 L L H L
H 5 H L L H
H R H L H L
When gearbox electronic control unit, TCU detects operation irregularity, closes all driving stages and enters after limp-home mode, and as shown in Figure 3, the 3rd switch valve 33, in acquiescence closed condition, makes the control end of the 3rd mechanical valve 23 be communicated with low pressure oil way.Be subject to the impact of the 3rd switch valve 33, the direct output of the 3rd mechanical valve 23 shielding harness oil pressure, now system oil pressure can only export via manually operated valve 7 and the 3rd mechanical valve 23 control end and the filler opening of the 4th mechanical valve 24 to, the control end of the 5th mechanical valve 25 and filler opening, simultaneously, the 3rd mechanical valve 23 is by low pressure oil way and the second solenoid valve 12, the 3rd solenoid valve 13, the 4th solenoid valve 14, the 5th solenoid valve 15, the first switch valve 31, the filler opening of second switch valve 32 is communicated with, the shift fork of the shift fork of the second gearshift mechanism 5 and the 3rd gearshift mechanism 6 all can only mediate.
When gear shifting handle is positioned at D position, manually operated valve 7 output system oil pressure, under the effect of the 4th mechanical valve 24, the first gearshift mechanism 4 is subject to system oil pressure to affect control synchro and enters 2 file locations, cooling system 3 maximums now, and wet clutch 2 pressure are controlled by the 5th mechanical valve 25, because the control end of the 5th mechanical valve 25 is connected with filler opening, after only having input pressure higher than certain threshold value, just can overcome spring force, delivery pressure is to clutch oil cylinder.Now driver's pedal of stepping on the throttle rises engine speed, when system oil pressure is along with after engine speed rises to certain threshold value (corresponding with the spring constant of the 5th mechanical valve 25), wet clutch 2 combinations, vehicle starts to travel, after unclamping gas pedal, wet clutch 2 is thrown off, and vehicle runs out of steam, and can be used for parking or vehicle sliding.
The limp-home oil-way system of the two clutch gearbox DCT of hydraulic control that the utility model provides, as Fig. 8, shown in Fig. 9 and Figure 10, compare with two clutch gearbox DCT hydraulic systems (shown in Fig. 4) of routine, increased manually operated valve 9', the 3rd switch valve 63, the 5th mechanical valve 55, the 6th mechanical valve 56, the 7th mechanical valve 57, the 8th mechanical valve 58, oil hydraulic cylinder 10', wherein manually operated valve 9' is four position and four-way reversing valves, the 5th mechanical valve 55 is two nine logical selector valves, the 6th mechanical valve 56 is two ten 5 way valves, the 3rd switch valve 63, the 7th mechanical valve 57 and the 8th mechanical valve 58 are two-bit triplet selector valve.The 3rd switch valve 63, the 5th mechanical valve 55, the 6th mechanical valve 56 are switched for the oil circuit of controlling between normal mode of operation and limp-home mode, manually operated valve 9' switches for differentiation and the oil circuit of P/N, R, D gear under limp-home mode, the 7th mechanical valve 57 and the 8th mechanical valve 58 are respectively used to control odd number shaft clutch 2' and the even number shaft clutch 4' under limp-home mode, and oil hydraulic cylinder 10' is used for controlling the 6th mechanical valve 56, the 7th mechanical valve 57 and the 8th mechanical valve 58.
Except aforementioned 6 valves, other each valve role is consistent with the effect in the two clutch gearboxes of conventional hydraulic control, wherein, delivery pressure and the engine speed of hydraulic-pressure pump 1 are linear, the first solenoid valve 41 and the first mechanical valve 51 reconcile the delivery pressure of hydraulic-pressure pump 1 for system oil pressure and by the first mechanical valve 51 outputs, the second solenoid valve 42 and the 6th mechanical valve 56 are for Controlled cooling system 3', the 3rd solenoid valve 43 and the 4th solenoid valve 44 are respectively used to control odd number shaft clutch 2' and the even number shaft clutch 4' under normal mode of operation, the first switch valve 61 and second switch valve 62 are for selecting the first gearshift mechanism 5' or the second gearshift mechanism 6' or the 3rd gearshift mechanism 7' or the 4th gearshift mechanism 8', the 5th solenoid valve 45 and the 6th solenoid valve 46 are for controlling and the first switch valve 61, the shift fork displacement of the gearshift mechanism that second switch valve 62 current states are corresponding.
The delivery outlet of hydraulic-pressure pump 1' is communicated with the filler opening of the first solenoid valve 41, the filler opening of the first mechanical valve 51, the control end of the first mechanical valve 51 is communicated with the oil outlet of the first solenoid valve 41, the oil outlet of the first mechanical valve 51 is with the filler opening of manually operated valve 9', the filler opening of the 3rd switch valve 63, the 5th mechanical valve 55 mono-road filler opening (P1) are communicated with, and the control end of the 5th mechanical valve 55 is communicated with the oil outlet of the 3rd switch valve 63.
The 5th mechanical valve 55 has three groups of working oil path, as Figure 12, shown in Fig. 8 to Figure 10, the oil inlet P 1 of first group of working oil path is communicated with the oil outlet of the first mechanical valve 51, the oil outlet A1 of first group of working oil path and the filler opening of the second solenoid valve 42, the filler opening of the 3rd solenoid valve 43, the filler opening of the 4th solenoid valve 44, the filler opening of the 5th solenoid valve 45, the filler opening of the 6th solenoid valve 46, the filler opening of the first switch valve 61, the filler opening of second switch valve 62 is communicated with, and the oil inlet P 2 of second group of working oil path is communicated with the first oil outlet (right side) of manually operated valve 9', the oil outlet A2 of second group of working oil path and filler opening and the control end of the 8th mechanical valve 58, the right side oil pocket of oil hydraulic cylinder 10' is communicated with, and the oil inlet P 3 of the 3rd group of working oil path is communicated with the second oil outlet (left side) of manually operated valve 9', the oil outlet A3 of the 3rd group of working oil path and filler opening and the control end of the 7th mechanical valve 57, the left side oil pocket of oil hydraulic cylinder 10' is communicated with, the oil outlet in the middle of oil hydraulic cylinder 10' and three road binders mouth Q1 of the 6th mechanical valve 56, Q4, Q5 and control end are communicated with.
The oil outlet of the first switch valve 61 is communicated with the control end of the second mechanical valve 52, and the oil outlet of second switch valve 62 is communicated with the control end of the 3rd mechanical valve 53, the control end of the 4th mechanical valve 54.A filler opening of the second mechanical valve 52 is communicated with the oil outlet of the 5th solenoid valve 45, another filler opening is communicated with the oil outlet of the 6th solenoid valve 46, first group of oil outlet (A1 of the second mechanical valve 52, B1) be communicated with two filler openings of the 3rd mechanical valve 53 respectively, second group of oil outlet (A2, B2) be communicated with two filler openings of the 4th mechanical valve 54 respectively, the first working hole A1 of first group of oil outlet of the 3rd mechanical valve 53 and 1 grade are communicated with a cavity volume (left side oil pocket) of 3 gear shift oil hydraulic cylinders, the second working hole B1 and 1 grade are communicated with No. two cavity volumes (right side oil pocket) of 3 gear shift oil hydraulic cylinders, the first working hole A2 of second group of oil outlet and 2 grades are communicated with a cavity volume (left side oil pocket) of 4 gear shift oil hydraulic cylinders, the second working hole B2 is communicated with the oil inlet P 4 of the 4th group of working oil path of the 6th mechanical valve 56, the first working hole A1 of first group of oil outlet of the 4th mechanical valve 54 and 5 grades are communicated with a cavity volume (left side oil pocket) of 7 gear shift oil hydraulic cylinders, the second working hole B1 and 5 grades are communicated with No. two cavity volumes (right side oil pocket) of 7 gear shift oil hydraulic cylinders, the first working hole A2 of second group of oil outlet is communicated with the oil inlet P 5 of the 5th group of working oil path of the 6th mechanical valve 56, the second working hole B2 and 6 grades are communicated with No. two cavity volumes (right side oil pocket) of R gear shift oil hydraulic cylinder.
The 6th mechanical valve 56 has five groups of working oil path, as Figure 13, shown in Fig. 8 to Figure 10, the first hydraulic fluid port P1 of first group of working oil path is communicated with the oil outlet of the second solenoid valve 42, the oil outlet A1 of first group of working oil path is connected to cooling system 3', the second hydraulic fluid port Q1 of first group of working oil path is communicated with the oil outlet of oil hydraulic cylinder 10', the first hydraulic fluid port P2 of second group of working oil path is communicated with the oil outlet of the 3rd solenoid valve 43, the oil outlet A2 of second group of working oil path is connected to odd number shaft clutch 2', the second hydraulic fluid port Q2 of second group of working oil path is communicated with the oil outlet of the 7th mechanical valve 57, the first hydraulic fluid port P3 of the 3rd group of working oil path is communicated with the oil outlet of the 4th solenoid valve 44, the oil outlet A3 of the 3rd group of working oil path is connected to even number shaft clutch 4', the second hydraulic fluid port Q3 of the 3rd group of working oil path is communicated with the oil outlet of the 8th mechanical valve 58, the first hydraulic fluid port P4 of the 4th group of working oil path is communicated with the second working hole B2 of 53 second groups of oil outlets of the 3rd mechanical valve, the oil outlet A4 of the 4th group of working oil path and 2 grades are communicated with No. two cavity volumes (right side oil pocket) of 4 gear shift oil hydraulic cylinders, the second hydraulic fluid port Q4 of the 4th group of working oil path is communicated with the oil outlet of oil hydraulic cylinder 10', the first hydraulic fluid port P5 of the 5th group of working oil path is communicated with the first working hole A2 of 54 second groups of oil outlets of the 4th mechanical valve, the oil outlet A5 of the 5th group of working oil path and 6 grades are communicated with a cavity volume (left side oil pocket) of R gear shift oil hydraulic cylinder, the second hydraulic fluid port Q5 of the 5th group of working oil path is communicated with the oil outlet of oil hydraulic cylinder 10'.
When gearbox electronic control unit TCU is during in normal mode of operation, as shown in Figure 5, the 3rd switch valve 63 under the control of TCU all the time in open mode, and the control end of output system oil pressure to the five mechanical valve 55.Be subject to the impact of the 3rd switch valve 63, the output of the 3rd mechanical valve 53 shielding manually operated valve 9', system oil pressure (output oil pressure of the first mechanical valve 51) is communicated with the filler opening of the second solenoid valve 42, the 3rd solenoid valve 43, the 4th solenoid valve 44, the 5th solenoid valve 45, the 6th solenoid valve 46, the first switch valve 61, second switch valve 62, meanwhile, the 3rd mechanical valve 53 is communicated with low pressure oil way with the control end of the 6th mechanical valve 56, the left and right oil pocket of the filler opening of the filler opening of the 7th mechanical valve 57 and control end, the 8th mechanical valve 58 and control end, oil hydraulic cylinder 10'.Under the impact of low pressure oil way, the 6th mechanical valve 56 makes odd number shaft clutch 2' controlled by the 3rd solenoid valve 43, and even number shaft clutch 4' is controlled by the 4th solenoid valve 44, and cooling system 3' is controlled by the second solenoid valve 42.Under the oil pressure of the first switch valve 61, second switch valve 62, the 5th solenoid valve 45, the 6th solenoid valve 46 is controlled, the gear relation of first, second, third and fourth gearshift 5', 6', 7', 8' is as shown in table 2, wherein H represents that valve is in high oil pressure state, and L represents that valve is in low oil pressure state.
Each grade of control logic under table 2DCT normal mode of operation
The 3rd switch valve 63 Gear The first switch valve 61 Second switch valve 62 The 5th solenoid valve 45 The 6th solenoid valve 46
H 1 L L L H
H 2 L H L H
H 3 L L H L
H 4 L H H L
H 5 H L L H
H 6 H H L H
H 7 H L H L
H R H H H L
When gearbox electronic control unit, TCU detects operation irregularity, closes all driving stages and enters after limp-home mode, and as shown in Figure 6, the 3rd switch valve 63, in acquiescence closed condition, makes the control end of the 5th mechanical valve 55 be communicated with low pressure oil way.Be subject to the impact of the 3rd switch valve 63, the direct output of the 5th mechanical valve 55 shielding harness oil pressure, now system oil pressure can only export the left side oil pocket of oil hydraulic cylinder 10' and control end and the filler opening of the 7th mechanical valve 57 to via manually operated valve 9' and the 5th mechanical valve 55, or export the right side oil pocket of oil hydraulic cylinder 10' and control end and the filler opening of the 8th mechanical valve 58 to, simultaneously, the 5th mechanical valve 55 is by low pressure oil way and the second solenoid valve 42, the 3rd solenoid valve 43, the 4th solenoid valve 44, the 5th solenoid valve 45, the 6th solenoid valve 46, the first switch valve 61, the filler opening of second switch valve 62 is communicated with, the shift fork of the shift fork of the first gearshift 5' and the 3rd gearshift 7' all can only mediate.
When shift handle is during in D position, as shown in Figure 6, manually operated valve 9' output system oil pressure, under the effect of the 6th mechanical valve 56, the second gearshift 6' is subject to system oil pressure to affect control synchro and enters 2 file locations, now cooling system 3' is maximum, and even number shaft clutch 4' pressure is controlled by the 8th mechanical valve 58.Because the control end of the 8th mechanical valve 58 is connected with filler opening, after only having input pressure higher than certain threshold value, just can overcome spring force, delivery pressure is to even number shaft clutch 4' oil cylinder.Now driver's pedal of stepping on the throttle rises engine speed, when system oil pressure is along with after engine speed rises to certain threshold value (corresponding with the spring constant of the 8th mechanical valve 58), even number shaft clutch 4' combination, vehicle starts to overtake, after unclamping gas pedal, even number shaft clutch 4' throws off, and vehicle runs out of steam, and can be used for parking or vehicle sliding.
When shift handle is during in R position, as shown in Figure 7, manually operated valve 9' output system oil pressure, under the effect of the 6th mechanical valve 56, the 4th gearshift 8' is subject to system oil pressure to affect control synchro and enters R file location, now cooling system 3' is maximum, and odd number shaft clutch 2' pressure is controlled by the 7th mechanical valve 57.Because the control end of the 7th mechanical valve 57 is connected with filler opening, after only having input pressure higher than certain threshold value, just can overcome spring force, delivery pressure is to odd number shaft clutch 2' oil cylinder.Now driver's pedal of stepping on the throttle rises engine speed, when system oil pressure is along with after engine speed rises to certain threshold value (corresponding with the spring constant of the 7th mechanical valve 57), odd number shaft clutch 2' combination, vehicle starts to overtake, after unclamping gas pedal, odd number shaft clutch 2' throws off, and vehicle runs out of steam, and can be used for parking or vehicle sliding.
For the hydraulic control AMT of employing the utility model oil-way system, when TCU cisco unity malfunction, close after all driving stages, driver can be by push handle on the D position pedal of stepping on the throttle simultaneously, make motor remain on the mode on certain rotating speed threshold values, realize 2 grades and travel, as shown in Figure 3.Because all gears of AMT all pass through same clutch, same input shaft, therefore can only realize one independent 2 grades, when needs are moveed backward, driver can only hang the shelves that make the return trip empty by handle, with the mode moving vehicle manually promoting.
For the hydraulic control DCT of employing the utility model oil-way system, when TCU cisco unity malfunction, close after all driving stages, driver equally can be by push handle on the D position pedal of stepping on the throttle simultaneously, make motor remain on the mode on certain rotating speed threshold values, realize 2 grades and travel, as shown in Figure 6.In addition, because 2 grades of DCT and R shelves pass through respectively different clutches and different input shafts, so driver can also, by handle is pushed to the R position pedal of stepping on the throttle simultaneously, make motor remain on the mode on certain rotating speed threshold values, realize reverse gear and travel, as shown in Figure 7.
In sum, adopt oil-way system of the present utility model can make hydraulic control AMT/DCT gearbox possess at present the exclusive limp-home function of AT gearbox on the market, improved reliability and the convenience of system.
By specific embodiment, the utility model is had been described in detail above, this embodiment is only preferred embodiment of the present utility model, and it not limits the utility model.In the situation that not departing from the utility model principle; those of ordinary skills under the prerequisite of not making creative work to aspects such as the composition of valve in the trend of the valve arrangement in oil-way system, oil circuit and oil circuit, annexations by any modification, be equal to all other embodiments that the modes such as replacement, improvement obtain, in the technology category that all should be considered as protecting at the utility model.

Claims (6)

1. the limp-home oil-way system of a hydraulic control automatic gearbox, it is characterized in that, comprise hydraulic-pressure pump (1), manually operated valve (7), the first solenoid valve (11), the second solenoid valve (12), the 3rd solenoid valve (13), the 4th solenoid valve (14), the 5th solenoid valve (15), the first mechanical valve (21), the second mechanical valve (22), the 3rd mechanical valve (23), the 4th mechanical valve (24), the 5th mechanical valve (25), the first switch valve (31), second switch valve (32), the 3rd switch valve (33), wet clutch (2), cooling system (3), the first gearshift mechanism (4), the second gearshift mechanism (5) and the 3rd gearshift mechanism (6), wherein,
Described the first solenoid valve (11) and the first mechanical valve (21) are for reconciling the delivery pressure of hydraulic-pressure pump (1) for system oil pressure, and this system oil pressure is exported by the first mechanical valve (21);
Described the second solenoid valve (12) and the 4th mechanical valve (24) are for controlling the wet clutch (2) under normal mode of operation, and described the 5th mechanical valve (25) and the 4th mechanical valve (24) are for controlling the wet clutch (2) under limp-home mode;
Described the 3rd solenoid valve (13) and the 4th mechanical valve (24) are for Controlled cooling system (3);
Described the first switch valve (31), second switch valve (32) and the second mechanical valve (22) are for selecting the first gearshift mechanism (4) or the second gearshift mechanism (5) or the 3rd gearshift mechanism (6);
Described the 4th solenoid valve (14), the 5th solenoid valve (15) and the second mechanical valve (22) are for controlling the gear switch of the gearshift mechanism corresponding with the first switch valve (31), second switch valve (32) working state;
Described the 3rd switch valve (33), the 3rd mechanical valve (23) and the 4th mechanical valve (24) are switched for the oil circuit of normal mode of operation and limp-home mode;
Described manually operated valve (7) switches for differentiation and the oil circuit of the P/R/N under limp-home mode, D shelves.
2. the limp-home oil-way system of hydraulic control automatic gearbox according to claim 1, is characterized in that,
When gearbox electronic control unit normal mode of operation, gearbox electronic control unit is controlled the 3rd switch valve (33) in open mode, the main oil pressure of hydraulic-pressure pump (1) output is through the first solenoid valve (11), the first mechanical valve (21) output system oil pressure, through the 3rd switch valve (33) and the 3rd mechanical valve (23), export again the filler opening of the second solenoid valve (12) to, the filler opening of the 3rd solenoid valve (13), the filler opening of the 4th solenoid valve (14), the filler opening of the 5th solenoid valve (15), the filler opening of the first switch valve (31), the filler opening of second switch valve (32), simultaneously, the 3rd mechanical valve (23) makes the control end of the 4th mechanical valve (24), control end and the filler opening of the 5th mechanical valve (25) are communicated with low pressure oil way, wet clutch (2) is controlled by the second solenoid valve (12) and the 4th mechanical valve (24), cooling system (3) is controlled by the 3rd solenoid valve (13) and the 4th mechanical valve (24), and three gearshifts are controlled by the 4th solenoid valve (14), the 5th solenoid valve (15), the first switch valve (31), second switch valve (32), the second mechanical valve (22) and the 4th mechanical valve (24),
When gearbox electronic control unit driving stage Close All, enter limp-home mode, the 3rd switch valve (33) is in closed condition, the main oil pressure of hydraulic-pressure pump (1) output is through the first solenoid valve (11), the first mechanical valve (21) output system oil pressure, through manually operated valve (7) and the 3rd mechanical valve (23), export the 4th mechanical valve (24) to again, the 5th mechanical valve (25), simultaneously, the filler opening of the second solenoid valve (12), the filler opening of the 3rd solenoid valve (13), the filler opening of the 4th solenoid valve (14), the filler opening of the 5th solenoid valve (15), the filler opening of the first switch valve (31), the filler opening of second switch valve (32) is communicated with low pressure oil way, wet clutch (2) is controlled by the 5th mechanical valve (25).
3. the limp-home oil-way system of hydraulic control automatic gearbox according to claim 1, is characterized in that,
The delivery outlet of hydraulic-pressure pump (1) is communicated with the filler opening of the filler opening of the first solenoid valve (11), the first mechanical valve (21), the control end of the first mechanical valve (21) is communicated with the oil outlet of the first solenoid valve (11), the oil outlet of the first mechanical valve (21) is communicated with the filler opening of the filler opening of manually operated valve (7), the 3rd switch valve (33), and the control end of the 3rd mechanical valve (23) is communicated with the oil outlet of the 3rd switch valve (33);
The 3rd mechanical valve (23) has two groups of working oil path, the filler opening of first group of working oil path is communicated with the filler opening of the 3rd switch valve (33), the filler opening of the oil outlet of first group of working oil path and the second solenoid valve (12), the filler opening of the 3rd solenoid valve (13), the filler opening of the 4th solenoid valve (14), the filler opening of the 5th solenoid valve (15), the filler opening of second switch valve (32), the filler opening of the first switch valve (31) is communicated with, the filler opening of second group of working oil path is communicated with the oil outlet of manually operated valve (7), filler opening and the control end of the oil outlet of second group of working oil path and the 5th mechanical valve (25), the control end of the 4th mechanical valve (24) is communicated with,
The 4th mechanical valve (24) has three groups of working oil path, the first hydraulic fluid port of first group of working oil path is communicated with the oil outlet of the second solenoid valve (12), the second hydraulic fluid port of first group of working oil path is communicated with the oil outlet of the 5th solenoid valve (15), the oil outlet of first group of working oil path is connected to wet clutch (2), the first hydraulic fluid port of second group of working oil path is communicated with the oil outlet of the 3rd solenoid valve (13), the second hydraulic fluid port of second group of working oil path is communicated with the filler opening of the 5th mechanical valve (25), the oil outlet of second group of working oil path is connected to cooling system (3), the first hydraulic fluid port of the 3rd group of working oil path is communicated with the first working hole of (22) first groups of oil outlets of the second mechanical valve, the second hydraulic fluid port of the 3rd group of working oil path is communicated with the filler opening of the 5th mechanical valve (25), the oil outlet of the 3rd group of working oil path is communicated with a cavity volume of the first gearshift mechanism (4),
No. two cavity volumes of the second working hole of (22) first groups of oil outlets of the second mechanical valve and the first gearshift mechanism (4) are communicated with, a cavity volume of the first working hole of second group of oil outlet and the second gearshift mechanism (5) is communicated with, No. two cavity volumes of the second working hole and the second gearshift mechanism (5) are communicated with, a cavity volume of the first working hole of the 3rd group of oil outlet and the 3rd gearshift mechanism (6) is communicated with, and No. two cavity volumes of the second working hole and the 3rd gearshift mechanism (6) are communicated with; A filler opening of the second mechanical valve (22) is communicated with the oil outlet of the 4th solenoid valve (14), another filler opening is communicated with the oil outlet of the 5th solenoid valve (15), the oil outlet of the first switch valve (31) is communicated with the right control end of the second mechanical valve (22), and the oil outlet of second switch valve (32) is communicated with the left control end of the second mechanical valve (22).
4. the limp-home oil-way system of the two clutch gearboxes of a hydraulic control, it is characterized in that, comprise that hydraulic-pressure pump (1'), manually operated valve (9'), oil hydraulic cylinder (10'), the first solenoid valve (41), the second solenoid valve (42), the 3rd solenoid valve (43), the 4th solenoid valve (44), the 5th solenoid valve (45), the 6th solenoid valve (46), the first mechanical valve (51), the second mechanical valve (52), the 3rd mechanical valve (53), the 4th mechanical valve (54), the 5th mechanical valve (55), the 6th mechanical valve (56), the 7th mechanical valve (57), the 8th mechanical valve (58), the first switch valve (61), second switch valve (62), the 3rd switch valve (63), cooling system (3'), odd number shaft clutch (2'), even number shaft clutch (4'), the first gearshift mechanism (5'), the second gearshift mechanism (6'), the 3rd gearshift mechanism the (7') with four gearshift (8'), wherein,
Described the first solenoid valve (41) and the first mechanical valve (51) are for reconciling hydraulic-pressure pump delivery pressure (1') for system oil pressure, and this system oil pressure is exported by the first mechanical valve (51);
Described the 3rd solenoid valve (43) and the 6th mechanical valve (56) be for controlling odd number shaft clutch under normal mode of operation (2'), and (2') described the 7th mechanical valve (57) and the 6th mechanical valve (56) for controlling odd number shaft clutch under limp-home mode;
Described the 4th solenoid valve (44) and the 6th mechanical valve (56) be for controlling even number shaft clutch under normal mode of operation (4'), and (4') described the 8th mechanical valve (58) and the 6th mechanical valve (56) for controlling even number shaft clutch under limp-home mode;
Described the second solenoid valve (42) and the 6th mechanical valve (56) are for Controlled cooling system (3');
(8') described the first switch valve (61), second switch valve (62) and the second mechanical valve (52), the 3rd mechanical valve (53), the 4th mechanical valve (54) for selecting the first gearshift mechanism (5') or the second gearshift mechanism the (6') or three gearshift mechanism the (7') or four gearshift;
Described the 5th solenoid valve (45), the 6th solenoid valve (46) and the second mechanical valve (52), the 3rd mechanical valve (53), the 4th mechanical valve (54) are for controlling the gear switch of the gearshift mechanism corresponding with the first switch valve (61), second switch valve (62) working state;
Described the 3rd switch valve (63), the 5th mechanical valve (55) and the 6th mechanical valve (56) are switched for the oil circuit of normal mode of operation and limp-home mode;
(9') described manually operated valve switches for differentiation and the oil circuit of the P/N under limp-home mode, R, D shelves;
Described oil hydraulic cylinder is (10') for controlling the 6th mechanical valve (56), the 7th mechanical valve (57) and the 8th mechanical valve (58) under limp-home mode.
5. the limp-home oil-way system of the two clutch gearboxes of hydraulic control according to claim 4, is characterized in that,
When gearbox electronic control unit normal mode of operation, gearbox electronic control unit is controlled the 3rd switch valve (63) in open mode, the main oil pressure that (1') hydraulic-pressure pump is exported is through the first solenoid valve (41), the first mechanical valve (51) output system oil pressure, through the 3rd switch valve (63) and the 5th mechanical valve (55), export again the filler opening of the second solenoid valve (42) to, the filler opening of the 3rd solenoid valve (43), the filler opening of the 4th solenoid valve (44), the filler opening of the 5th solenoid valve (45), the filler opening of the 6th solenoid valve (46), the filler opening of the first switch valve (61), the filler opening of second switch valve (62), simultaneously, the 5th mechanical valve (55) makes the control end of the 6th mechanical valve (56), filler opening and the control end of the 7th mechanical valve (57), filler opening and the control end of the 8th mechanical valve (58), oil hydraulic cylinder left and right oil pocket is (10') communicated with low pressure oil way, (2') odd number shaft clutch is controlled by the 3rd solenoid valve (43) and the 6th mechanical valve (56), (4') even number shaft clutch is controlled by the 4th solenoid valve (44) and the 6th mechanical valve (56), (3') cooling system is controlled by the second solenoid valve (42) and the 6th mechanical valve (56), and four gearshifts are controlled by the 5th solenoid valve (45), the 6th solenoid valve (46), the first switch valve (61), second switch valve (62), the second mechanical valve (52), the 3rd mechanical valve (53), the 4th mechanical valve (54), the 6th mechanical valve (56),
When gearbox electronic control unit driving stage Close All, enter limp-home mode, the 3rd switch valve (63) is in closed condition, the main oil pressure that (1') hydraulic-pressure pump is exported is through the first solenoid valve (41), the first mechanical valve (51) output system oil pressure, through manually operated valve the (9') with five mechanical valve (55), export hydraulic jack the (10') with seven mechanical valve (57) to again, or export oil hydraulic cylinder the (10') with eight mechanical valve (58) to, simultaneously, the filler opening of the second solenoid valve (42), the filler opening of the 3rd solenoid valve (43), the filler opening of the 4th solenoid valve (44), the filler opening of the 5th solenoid valve (45), the filler opening of the 6th solenoid valve (46), the filler opening of the first switch valve (61), the filler opening of second switch valve (62) is communicated with low pressure oil way, (2') odd number shaft clutch is controlled by the 7th mechanical valve (57) and the 6th mechanical valve (56), (4') even number shaft clutch is controlled by the 8th mechanical valve (58) and the 6th mechanical valve (56).
6. the limp-home oil-way system of the two clutch gearboxes of hydraulic control according to claim 4, is characterized in that,
Hydraulic-pressure pump delivery outlet is (1') communicated with the filler opening of the first solenoid valve (41), the filler opening of the first mechanical valve (51), the control end of the first mechanical valve (51) is communicated with the oil outlet of the first solenoid valve (41), filler opening (9') of the oil outlet of the first mechanical valve (51) and manually operated valve, the filler opening of the 3rd switch valve (63) are communicated with, and the control end of the 5th mechanical valve (55) is communicated with the oil outlet of the 3rd switch valve (33);
The 5th mechanical valve (55) has three groups of working oil path, the filler opening of first group of working oil path is communicated with the filler opening of the 3rd switch valve (63), the filler opening of the oil outlet of first group of working oil path and the second solenoid valve (42), the filler opening of the 3rd solenoid valve (43), the filler opening of the 4th solenoid valve (44), the filler opening of the 5th solenoid valve (45), the filler opening of the 6th solenoid valve (46), the filler opening of the first switch valve (61), the filler opening of second switch valve (62) is communicated with, the filler opening of second group of working oil path is communicated with manually operated valve the first oil outlet (9'), filler opening and the control end of the oil outlet of second group of working oil path and the 8th mechanical valve (58), oil hydraulic cylinder right side oil pocket is (10') communicated with, the filler opening of the 3rd group of working oil path is communicated with manually operated valve the second oil outlet (9'), filler opening and the control end of the oil outlet of the 3rd group of working oil path and the 7th mechanical valve (57), oil hydraulic cylinder left side oil pocket is (10') communicated with, the oil hydraulic cylinder (10') oil outlet of centre is communicated with the control end of the 6th mechanical valve (56),
The oil outlet of the first switch valve (61) is communicated with the control end of the second mechanical valve (52), and the oil outlet of second switch valve (62) is communicated with the control end of the 3rd mechanical valve (53), the control end of the 4th mechanical valve (54), a filler opening of the second mechanical valve (52) is communicated with the oil outlet of the 5th solenoid valve (45), another filler opening is communicated with the oil outlet of the 6th solenoid valve (46), first group of oil outlet of the second mechanical valve (52) is communicated with two filler openings of the 3rd mechanical valve (53) respectively, second group of oil outlet is communicated with two filler openings of the 4th mechanical valve (54) respectively, the first working hole of first group of oil outlet of the 3rd mechanical valve (53) and a first gearshift mechanism cavity volume is (5') communicated with, the second working hole and the first gearshift mechanism No. two cavity volumes are (5') communicated with, the first working hole of second group of oil outlet and a second gearshift mechanism cavity volume is (6') communicated with, the second working hole is communicated with the filler opening of the 4th group of working oil path of the 6th mechanical valve (56), the first working hole of first group of oil outlet of the 4th mechanical valve (54) and a 3rd gearshift mechanism cavity volume is (7') communicated with, the second working hole and the 3rd gearshift mechanism No. two cavity volumes are (7') communicated with, the first working hole of second group of oil outlet is communicated with the filler opening of the 5th group of working oil path of the 6th mechanical valve (56), the second working hole and the 4th gearshift mechanism No. two cavity volumes are (8') communicated with,
The 6th mechanical valve (56) has five groups of working oil path, the first hydraulic fluid port of first group of working oil path is communicated with the oil outlet of the second solenoid valve (42), the second hydraulic fluid port of first group of working oil path is communicated with oil hydraulic cylinder oil outlet (10'), (3') the oil outlet of first group of working oil path is connected to cooling system, the first hydraulic fluid port of second group of working oil path is communicated with the oil outlet of the 3rd solenoid valve (43), the second hydraulic fluid port of second group of working oil path is communicated with the oil outlet of the 7th mechanical valve (57), (2') the oil outlet of second group of working oil path is connected to odd number shaft clutch, the first hydraulic fluid port of the 3rd group of working oil path is communicated with the oil outlet of the 4th solenoid valve (44), the second hydraulic fluid port of the 3rd group of working oil path is communicated with the oil outlet of the 8th mechanical valve (58), (4') the oil outlet of the 3rd group of working oil path is connected to even number shaft clutch, the first hydraulic fluid port of the 4th group of working oil path is communicated with the second working hole of (53) second groups of oil outlets of the 3rd mechanical valve, the second hydraulic fluid port of the 4th group of working oil path is communicated with oil hydraulic cylinder oil outlet (10'), the oil outlet of the 4th group of working oil path and the second gearshift mechanism No. two cavity volumes are (6') communicated with, the first hydraulic fluid port of the 5th group of working oil path is communicated with the first working hole of (54) second groups of oil outlets of the 4th mechanical valve, the second hydraulic fluid port of the 5th group of working oil path is communicated with oil hydraulic cylinder oil outlet (10'), the oil outlet of the 5th group of working oil path and a 4th gearshift mechanism cavity volume is (8') communicated with.
CN201320465829.XU 2013-08-01 2013-08-01 Oil way systems capable of achieving limp home and used on hydraulic-control automatic mechanical transmission and double-clutch transmission Expired - Fee Related CN203477295U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103982646A (en) * 2014-06-03 2014-08-13 盛瑞传动股份有限公司 Method and system for controlling active limp home returning mode entering of automatic gearbox
CN106468354A (en) * 2015-08-20 2017-03-01 卡特彼勒（青州）有限公司 Hydraulic control system for change speed gear box and machine
CN108980324A (en) * 2018-08-31 2018-12-11 吉测(苏州)测试***有限公司 Manual/auto speed changer one temperature control system
CN109654216A (en) * 2019-01-29 2019-04-19 东风汽车集团有限公司 The mixed dynamic gear box hydraulic control method and system that parking and clutch integrate

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103982646A (en) * 2014-06-03 2014-08-13 盛瑞传动股份有限公司 Method and system for controlling active limp home returning mode entering of automatic gearbox
CN106468354A (en) * 2015-08-20 2017-03-01 卡特彼勒（青州）有限公司 Hydraulic control system for change speed gear box and machine
CN108980324A (en) * 2018-08-31 2018-12-11 吉测(苏州)测试***有限公司 Manual/auto speed changer one temperature control system
CN108980324B (en) * 2018-08-31 2023-09-26 吉测(苏州)测试***有限公司 Transmission temperature control system
CN109654216A (en) * 2019-01-29 2019-04-19 东风汽车集团有限公司 The mixed dynamic gear box hydraulic control method and system that parking and clutch integrate

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