CN204801766U - Starting system and car - Google Patents
Starting system and car Download PDFInfo
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- CN204801766U CN204801766U CN201520417082.XU CN201520417082U CN204801766U CN 204801766 U CN204801766 U CN 204801766U CN 201520417082 U CN201520417082 U CN 201520417082U CN 204801766 U CN204801766 U CN 204801766U
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Abstract
The utility model discloses a starting system and car. This starting system includes: vehicle status detection device, the control unit, drive -by -wire clutch and braking auxiliary device, vehicle status detection device, drive -by -wire clutch and braking auxiliary device are connected with the control unit respectively, vehicle status detection device detects the current status of vehicle to transmit current status signal to the control unit, the control unit sends control signal, control vehicle starting to the drive -by -wire clutch with braking auxiliary device respectively. The utility model discloses in, vehicle status detection device is to the current status of the control unit transmission vehicle, the control unit control drive -by -wire clutch and braking auxiliary device to control vehicle starting has been realized. Furtherly has especially realized the starting of control vehicle ramp, takes place the danger of swift current car in the ramp when preventing to start to walk, improves the security of ramp starting.
Description
Technical field
The utility model relates to engineering machinery field, particularly one starting system and automobile.
Background technology
Uphill starting is the driving cycles that chaufeur often runs in vehicle traveling process.When automobile is temporarily or when being anchored on ramp for a long time, chaufeur is needed to slam brake pedal or pull-up parking brake, to prevent from slipping car.For both of these case, uphill starting problem will be related to when again starting to walk.
Uphill starting is the prerequisite basic skills of chaufeur, but the especially very difficult control flexibly of new hand of many chaufeurs, usually there will be starting and stop working or car of starting to walk to slip, or starting is not steadily made a dash forward.According to statistics, because uphill starting slips car accident that car causes in the trend risen year by year.Res shows, and for the chaufeur of hand-operated transmission in uphill starting process, having the chaufeur of 2 ~ 5 year driving age to slip car and the probability that stops working is 10%, substantially equal.Driving age is 10 years and above chaufeur, slips by slope and the probability that stops working is 4%.Even skilled chaufeur, when driving different automobile, because the position of power-transfer clutch idle travel and semi-linkage can be different, also need there is a familiar process to automobile.Therefore uphill starting is a difficult point in driver behavior.
At present, uphill starting system is mainly divided into mechanical type and electric-controlled type.For mechanical uphill starting system, its complicated in mechanical structure, cost are high, and intelligent not.And the uphill starting system of electric-controlled type, based on automatic transmission, the ramp angles signal of induction is sent to entire car controller by ramp sensor, entire car controller, according to the control signal of the ramp angles signal received, gear signal, vehicle speed signal, service brake signal and throttle signal determination motor control module, uses power wheel to carry out uphill starting; Or control brake system, can make the pressure in brake system maintain about 2s when making chaufeur discharge brake pedal.This automatically controlled scheme is used for automatic transmission vehicle, and the Optimum Matching relation between uncontrollable power-transfer clutch, throttle gate, brake system.
Utility model content
The technical matters that the utility model needs solve is: provide ancillary system during a kind of vehicle starting.
According to first aspect of the present utility model, provide a kind of starting system, comprising: vehicle condition detection device, control unit, line traffic control power-transfer clutch and brake auxiliary device; Described vehicle condition detection device, described line traffic control power-transfer clutch are connected with described control unit respectively with described brake auxiliary device; Described vehicle condition detection device detects the current state of vehicle, and current state output signals is transferred to described control unit; Described control unit transmits control signal respectively to described line traffic control power-transfer clutch and described brake auxiliary device, controls vehicle start.
Further, described vehicle condition detection device comprises: car speed sensor, is electrically connected with described control unit, measures the speed of described vehicle, and described speed is transferred to described control unit; Obliquity sensor, is electrically connected with described control unit, measures the inclination angle of described vehicle, and described inclination angle is transferred to described control unit.
Further, described vehicle condition detection device also comprises: engine load sensor, is electrically connected with described control unit, measures the aperture of throttle gate, and described aperture is transferred to described control unit; Pressure sensor, is electrically connected with described control unit, the pressure in the master brake cylinder of measuring vehicle, and by described pressure transmission to described control unit; Gear position sensor, is electrically connected with described control unit, the gear of measuring vehicle, and described gear is transferred to described control unit.
Further, described vehicle condition detection device also comprises: clutch oil cylinder displacement pickup, is electrically connected with described control unit, the displacement of gaging clutch oil cylinder, and described displacement is transferred to described control unit.
Further, described line traffic control power-transfer clutch comprises: controllable capacity pump, clutch control valve and clutch oil cylinder; Wherein, described controllable capacity pump and described clutch control valve are electrically connected with described control unit respectively; Described controllable capacity pump is connected with described clutch control valve by oil circuit, and described clutch control valve is connected with described clutch oil cylinder by oil circuit.
Further, described line traffic control power-transfer clutch also comprises: pulling force sensor, is electrically connected with described control unit, the pulling force of gaging clutch pedal, and by pulling force Signal transmissions to described control unit.
Further, described brake auxiliary device comprises: brake pump, brake control valve, brake-pressure controller and by pass valve; Wherein, described brake control valve and described brake-pressure controller are electrically connected with described control unit respectively; Described brake pump is connected with described brake control valve by oil circuit, described brake control valve is connected with described brake-pressure controller by oil circuit, described brake-pressure controller is connected with wheel braking wheel cylinder by oil circuit, and described by pass valve is connected with described brake control valve and fuel tank respectively by oil circuit.
Further, described control unit is electronic control unit ECU.
According to second aspect of the present utility model, provide a kind of automobile, comprising: start to walk system as previously mentioned.
In the utility model, vehicle condition detection device detects the current state of vehicle, and current state output signals is transferred to control unit, and control unit controls line traffic control power-transfer clutch and brake auxiliary device, thus achieves control vehicle start.Further, especially achieve and control car ramp starting, prevent from slipping when uphill starting the danger of car, the safety of raising uphill starting.
By referring to the detailed description of accompanying drawing to exemplary embodiment of the present utility model, further feature of the present utility model and advantage thereof will become clear.
Accompanying drawing explanation
What form a part for specification sheets drawings describes embodiment of the present utility model, and together with the description for explaining principle of the present utility model.
With reference to accompanying drawing, according to detailed description below, clearly the utility model can be understood, wherein:
Fig. 1 is the anatomical connectivity block diagram of the starting system schematically shown according to some embodiments of the utility model.
Fig. 2 is the anatomical connectivity block diagram of the starting system schematically shown according to other embodiments of the utility model.
Fig. 3 illustrates stressed schematic diagram when being positioned at ramp according to the vehicle of the utility model embodiment.
Fig. 4 is the schematic diagram of the line traffic control power-transfer clutch schematically shown according to some embodiments of the utility model.
Fig. 5 is the schematic diagram of the brake auxiliary device schematically shown according to some embodiments of the utility model.
Fig. 6 is the diagram of circuit of the method for starting illustrated according to some embodiments of the utility model.
Fig. 7 is the diagram of circuit of the method for starting illustrated according to other embodiments of the utility model.
Detailed description of the invention
Various exemplary embodiment of the present utility model is described in detail now with reference to accompanying drawing.It should be noted that: unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit scope of the present utility model.
Meanwhile, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not draw according to the proportionate relationship of reality.
Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the utility model and application or use.
May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part of authorizing specification sheets.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
Fig. 1 is the anatomical connectivity block diagram of the starting system schematically shown according to some embodiments of the utility model.As shown in Figure 1, starting system 100 comprises: vehicle condition detection device 101, control unit 102, line traffic control power-transfer clutch 103 and brake auxiliary device 104.Vehicle condition detection device 101, line traffic control power-transfer clutch 103 are connected with control unit 102 respectively with brake auxiliary device 104 (being such as electrically connected).
Vehicle condition detection device 101 detects the current state of vehicle, and current state output signals is transferred to control unit 102; Control unit 102 (such as can according to current state output signals) transmits control signal respectively to line traffic control power-transfer clutch 103 and brake auxiliary device 104, controls vehicle start.Such as, this starting system can be applied on manual gear vehicle.Again such as, control unit can be ECU (ElectronicControlUnit, electronic control unit).
In this embodiment, vehicle condition detection device is to the current state of control unit transmission vehicle, and control unit controls line traffic control power-transfer clutch and brake auxiliary device, thus achieves control vehicle start.Further, especially achieve and control car ramp starting, prevent from slipping when uphill starting the danger of car, the safety of raising uphill starting.
Fig. 2 is the anatomical connectivity block diagram of the starting system schematically shown according to other embodiments of the utility model.As shown in Figure 2, starting system 200 comprises: vehicle condition detection device 201, control unit 202, line traffic control power-transfer clutch 203 and brake auxiliary device 204.Wherein, the vehicle condition detection device 201 in Fig. 2, control unit 202, line traffic control power-transfer clutch 203, brake auxiliary device 204 are similar with the vehicle condition detection device 101 in Fig. 1, control unit 102, line traffic control power-transfer clutch 103, brake auxiliary device 104 respectively.
In one embodiment, vehicle condition detection device 201 can comprise: car speed sensor 2011 and obliquity sensor 2012, and as shown in Figure 2, car speed sensor 2011, obliquity sensor 2012 are electrically connected with control unit 202 respectively.
The speed of car speed sensor 2011 (being such as arranged in driving axle housing or transmission case) measuring vehicle, and this speed is transferred to control unit 202; The inclination angle of obliquity sensor 2012 (being such as arranged on body tail) measuring vehicle, and this inclination angle is transferred to control unit 202.This control unit is when this speed is 0 and this inclination angle is greater than default inclination value, send power-transfer clutch to line traffic control power-transfer clutch 203 to depart from conjunction with control signal, and send startup control signal to brake auxiliary device 204, thus realize line traffic control power-transfer clutch to depart to combine, and start brake auxiliary device.
Setting about default inclination value can be determined according to actual conditions, such as, can set vehicle and to be freely parked on ramp and when not adopting any braking method, keeps the static maximum grade angle θ that Che Suoneng reaches that do not slip
maxfor default inclination value.Grade angle when ramp are greater than θ
maxtime need to take braking method could keep stationary vehicle on ramp, do not slip car.
Fig. 3 illustrates stressed schematic diagram when being positioned at ramp according to the vehicle of the utility model embodiment.Obliquity sensor 3012 has been shown in Fig. 3, and the obliquity sensor 2012 in this sensor and Fig. 2 is similar.This obliquity sensor for measuring the inclination angle of current vehicle body, the grade angle in the ramp namely residing for vehicle.As shown in Figure 3, vehicle is subject to self gravity on ramp, ground in the face of the friction drag of tire and driving engine are to the effect of the propulsive effort of wheel, by the grade angle that record and then can in the hope of the gradient resistance Fi suffered by vehicle:
Fi＝Gsinθ+Gfcosθ，
Wherein, G is vehicle weight, and θ is grade angle (i.e. inclination angles), and f is road friction drag coefficient.When vehicle is started to walk, the propulsive effort F that wheel obtains needs to be greater than gradient resistance Fi just can make vehicle smooth starting on ramp not slip car.It will be understood by those skilled in the art that and can go out θ according to formulae discovery above
max, also can record θ by experiment
max, scope of the present utility model is not limited in this.
In embodiment of the present utility model, as shown in Figure 2, vehicle condition detection device 201 can also comprise: engine load sensor 2013, pressure sensor 2014 and gear position sensor 2015.Wherein, engine load sensor 2013, pressure sensor 2014 and gear position sensor 2015 are electrically connected with control unit 202 respectively.
Engine load sensor 2013 (being such as arranged on throttle gate) measures the aperture of throttle gate, and this aperture is transferred to control unit 202; Pressure in the master brake cylinder of pressure sensor 2014 (being such as arranged on master brake cylinder or brake control valve) measuring vehicle, and by this pressure transmission to control unit 202; The gear of gear position sensor 2015 (being such as arranged in change speed gear box) measuring vehicle, and this gear is transferred to control unit 202.This control unit 202 judges whether this gear is 1 grade or reverse gear, if so, then sends power-transfer clutch in conjunction with control signal according to the aperture of throttle gate and the pressure of master brake cylinder to line traffic control power-transfer clutch 203, the combination degree of control clutch.Here, the tightness degree that the A end that the combination degree of power-transfer clutch refers to power-transfer clutch is combined with secondary part, combination degree is higher, shows that A end is combined tighter with secondary part.Such as, the combination degree of power-transfer clutch needs to ensure that drive torque is greater than gradient resistance and brake resistance.
In embodiment of the present utility model, as shown in Figure 2, vehicle condition detection device 201 can also comprise: clutch oil cylinder displacement pickup 2016 (being such as arranged on clutch oil cylinder), be electrically connected with control unit 202, the displacement of gaging clutch oil cylinder, and this displacement is transferred to control unit 202.This control unit obtains the combination degree of power-transfer clutch according to this displacement.Because clutch oil cylinder acts on the platen of power-transfer clutch, platen is made to be pressed on friction lining, friction lining is combined with flywheel, therefore, the displacement of clutch oil cylinder can reflect the combination degree of friction lining and flywheel, therefore can be obtained the combination degree of power-transfer clutch by the displacement of gaging clutch oil cylinder.Such as, the corresponding relation of the combination degree of oil cylinder displacement and power-transfer clutch can be measured in advance, and this corresponding relation is stored in a control unit, control unit inquires about this corresponding relation according to the displacement received from clutch oil cylinder displacement pickup, and then obtains the combination degree of power-transfer clutch.Control unit can control line traffic control power-transfer clutch according to the aperture of throttle gate and the pressure (pressure in such as master brake cylinder) of brake system further after the combination degree obtaining power-transfer clutch, until obtain the combination degree adapting to the power-transfer clutch of operating mode at that time.
Fig. 4 is the schematic diagram of the line traffic control power-transfer clutch schematically shown according to some embodiments of the utility model.As shown in Figure 4, line traffic control power-transfer clutch can comprise: controllable capacity pump 4031, clutch control valve 4032 and clutch oil cylinder 4033.For illustrative purposes, also show flywheel 4101, friction lining 4102, platen 4103, power-transfer clutch by pass valve 4106, power-transfer clutch fil 4108, fuel tank 4109, control unit 402 (similar with the control unit 202 in Fig. 2), clutch pedal link 4111, pedal of clutch 4112, clutch pedal return spring 4113 in Fig. 4.As shown in Figure 4, controllable capacity pump 4031 and clutch control valve 4032 are electrically connected with control unit 402 respectively; Controllable capacity pump 4031 is connected with clutch control valve 4032 by oil circuit (can be called the first oil circuit), and clutch control valve is connected with clutch oil cylinder 4033 by oil circuit (can be called the second oil circuit).
Control unit 402 is according to the sense of motion of the Stress control clutch control valve 4032 switch clutch oil cylinder 4033 in the aperture of throttle gate and master brake cylinder, and hydraulic oil is transported to clutch oil cylinder 4033 (namely the stroke of controllable capacity pump to clutch oil cylinder controls) from fuel tank 4109 by control variable pump 4031, with the combination degree of control clutch, power-transfer clutch is made to arrive complete bonding state gradually from disengaged position.
In one embodiment, as shown in Figure 4, line traffic control power-transfer clutch can also comprise: pulling force sensor 4034, is electrically connected with control unit 402, the pulling force of gaging clutch pedal 4112, and by pulling force Signal transmissions to control unit 402.This control unit 402 is according to the combination degree of this pulling force signal control power-transfer clutch.Such as, when starting system does not start, use pulling force signal control power-transfer clutch, as started then pulling force signal not control clutch combination.
Such as, when not starting uphill starting, the pedal of clutch signal (i.e. pulling force signal) that control unit transmits according to pulling force sensor 4034, controllable capacity pump 4031 and clutch control valve 4032 are controlled, the sense of motion of clutch control valve 4032 switch clutch oil cylinder 4033, controllable capacity pump 4031 controls the combination degree of friction clutch by the hydraulic fluid flow rate controlling to flow into clutch oil cylinder 4033, and during not stepping on clutch pedal 4112, power-transfer clutch combines completely.When starting uphill starting, the combination degree of the signal of pulling force sensor 4034 no longer control clutch, but controlled according to throttle opening amount signal, the combination degree of master brake cylinder pressure signal to power-transfer clutch by control unit, vehicle drive force is made to be greater than gradient resistance suffered by vehicle, uphill starting smoothly under flame-out prerequisite of not slipping car.When starting completes (namely at this moment can close starting system), the bonding state of power-transfer clutch provides control signal to control in real time it by pulling force sensor.
In embodiment of the present utility model, can test in advance, obtain the characteristic curve about throttle opening, master brake cylinder pressure and suitable power-transfer clutch combination degree, and this characteristic curve is stored in a control unit, thus control unit can obtain suitable power-transfer clutch combination degree when obtaining throttle opening, master brake cylinder pressure, thus driving engine exports suitable drive torque, ensure that drive torque is greater than gradient resistance and brake resistance, when realizing uphill starting, do not slip car.
Fig. 5 is the schematic diagram of the brake auxiliary device schematically shown according to some embodiments of the utility model.As shown in Figure 5, brake auxiliary device comprises: brake pump 5041, brake control valve 5042, brake-pressure controller 5043 and by pass valve 5044 (can be called drg by pass valve).For illustrative purposes, also show fuel tank 5109 (similar with the fuel tank 4109 in Fig. 4), drg fil 5116, wheel braking wheel cylinder 5120, master brake cylinder 5121, brake pedal connecting rod 5122, brake pedal pull back spring 5123, brake pedal 5124 and control unit 502 (similar with the control unit 402 in Fig. 4) in Fig. 5.As shown in Figure 5, brake control valve 5042 and brake-pressure controller 5043 are electrically connected with control unit 502 respectively; Brake pump 5041 is connected with brake control valve 5042 by oil circuit (can be called the 3rd oil circuit), brake control valve 5042 is connected with brake-pressure controller 5043 by oil circuit (can be called the 4th oil circuit), brake-pressure controller 5043 is connected with wheel braking wheel cylinder 5120 by oil circuit (can be called the 5th oil circuit), and by pass valve 5044 is connected with brake control valve 5042 and fuel tank 5109 respectively by oil circuit (can be called the 6th oil circuit).As shown in Figure 5, control unit 502 is electrically connected with wheel braking wheel cylinder 5120.
In one embodiment, control unit 502 sends braking to brake auxiliary device and performs control signal, switch the control position of brake control valve 5042, close brake-pressure controller 5043, hydraulic oil is transported in wheel braking wheel cylinder 5120 by brake pump 5041, promotes brake plate and wheel is braked; When pressure (i.e. brake system pressure) in master brake cylinder reaches preset pressure value (such as can determine this preset pressure value according to actual condition), keep the control position of brake control valve 5042 constant, by pass valve 5044 starts overflow; And change in the aperture of throttle gate, when namely preparing starting, brake-pressure controller 5043 is regulated, reduce the pressure of master brake cylinder, namely reduce brake system pressure.
Such as, when not carrying out uphill starting, step on brake pedal 5124, make the hydraulic oil in master brake cylinder 5121 arrive in each wheel braking wheel cylinder 5120 by brake piping, wheel braking wheel cylinder 5120 promotes brake plate and brakes wheel.When starting uphill starting, brake auxiliary device also starts to start, and substitutes former brake system.Now, switch the control position of brake control valve 5042, close brake-pressure controller 5043, by brake pump 5041 by direct for hydraulic oil pump in each wheel braking wheel cylinder 5120, promote brake plate and wheel braked.When brake system internal pressure reaches preset pressure value, keep the control position of brake control valve 5042 constant, by pass valve 5044 starts overflow.If do not have throttle opening variable signal (i.e. Throttle Position variable signal), namely vehicle keeps static in ramp, and this BAS (Brake Assist System) needs to keep the brake-pressure in wheel braking wheel cylinder 5120 constant always.When throttle opening amount signal starts change, namely now uphill starting is prepared, control unit 502 controls according to throttle opening amount signal line traffic control power-transfer clutch and brake auxiliary device, the control of brake auxiliary device is mainly regulated brake-pressure controller 5043, changes brake system internal detent pressure; Large and the power-transfer clutch combination degree of change along with throttle opening increases, the pressure of brake auxiliary device inside reduces gradually, when the speed of a motor vehicle is greater than pre-set velocity value, judge now to complete uphill starting smoothly, brake-pressure controller 5043 is opened completely, brake system pressure is zero, closes starting system.
In this embodiment, when the system of starting starts (such as, can add during startup that indicator lamp is pointed out), vehicle is static in ramp, the pin stepped down on brake pedal can be decontroled by chaufeur, and now brake auxiliary device is started working, and reduces the driving fatigue of chaufeur.Step on Das Gaspedal when chaufeur and prepare uphill starting, while power-transfer clutch slowly combines, the pressure of brake auxiliary device reduces gradually; Das Gaspedal, power-transfer clutch and brake auxiliary device cooperatively interact, and make vehicle can complete uphill starting smoothly and do not slip car; Slip car if detected, brake auxiliary device increases Braking system pressure in time, vehicle is braked on ramp static.This starting system is convenient to control, and reflects sensitive, makes vehicle can carry out uphill starting smoothly.
In embodiment of the present utility model, control unit judges whether to stop working, and if so, then keeps braking quiescence; Otherwise judge whether the speed of a motor vehicle is greater than pre-set velocity value, if so, then determine that vehicle completes starting, opens completely by brake-pressure controller; Otherwise again transmit control signal respectively to line traffic control power-transfer clutch and brake auxiliary device, thus control further to carry out uphill starting.It will be appreciated by those skilled in the art that control unit can judge whether to stop working to flame-out relevant signal synthesis according to some.In certain embodiments, vehicle generally uses one grade or reverse gear, and control unit can judge whether to slip car according to the speed of a motor vehicle.Such as, when one grade, the speed of a motor vehicle is that namely negative value is judged as slipping car; During reverse gear, the speed of a motor vehicle is on the occasion of being namely judged as slipping car.In further embodiments, pre-set velocity value can be determined according to actual condition, and such as, pre-set velocity value is 2km/h (thousand ms/h).
In embodiment of the present utility model, control unit receives the signal of car speed sensor and obliquity sensor, judge the start and stop of starting system, when starting native system, control unit exports control signal to brake auxiliary device, control brake control valve and brake-pressure controller, ensure motor vehicle braking system pressure, even if service brake pedal is separated also do not affect brake system pressure; When chaufeur prepares uphill starting, control unit is according to engine load sensor output line control power-transfer clutch and brake auxiliary device control signal, control clutch control cock, controllable capacity pump, brake-pressure controller, make vehicle energy uphill starting smoothly, neither the flame-out car that also do not slip.
The utility model additionally provides a kind of automobile, comprising: start to walk system foregoing, such as starting system 100 as shown in Figure 1 or starting system 200 as shown in Figure 2.Starting system of the present utility model can be applied on manual vehicle, also can be applied on other types vehicle.
Fig. 6 is the diagram of circuit of the method for starting illustrated according to some embodiments of the utility model.
Step S601, vehicle condition detection device detects the current state of vehicle, and current state output signals is transferred to control unit.
Step S602, control unit transmits control signal respectively to line traffic control power-transfer clutch and brake auxiliary device according to current state output signals, controls vehicle start.
In this embodiment, vehicle condition detection device is to the current state of control unit transmission vehicle, and control unit controls line traffic control power-transfer clutch and brake auxiliary device, thus achieves control vehicle start.Further, especially achieve and control car ramp starting, prevent from slipping when uphill starting the danger of car, the safety of raising uphill starting.
In certain embodiments, vehicle condition detection device can comprise: car speed sensor and obliquity sensor.Vehicle condition detection device detects the current state of vehicle, and step current state output signals being transferred to control unit comprises: the speed of car speed sensor measuring vehicle, and this speed is transferred to control unit; The inclination angle of obliquity sensor measuring vehicle, and this inclination angle is transferred to control unit; Control unit transmits control signal respectively to line traffic control power-transfer clutch and brake auxiliary device according to current state output signals, the step controlling vehicle start comprises: control unit is when this speed is 0 and this inclination angle is greater than default inclination value, send power-transfer clutch to line traffic control power-transfer clutch to depart from conjunction with control signal, and send startup control signal to brake auxiliary device, thus achieve line traffic control power-transfer clutch disengaging combination, and start brake auxiliary device.
In certain embodiments, vehicle condition detection device can also comprise: engine load sensor, pressure sensor and gear position sensor.Vehicle condition detection device detects the current state of vehicle, and step current state output signals being transferred to control unit also comprises: engine load sensor measures the aperture of throttle gate, and this aperture is transferred to control unit; Pressure in the master brake cylinder of pressure sensor measuring vehicle, and by this pressure transmission to control unit; The gear of gear position sensor measuring vehicle, and this gear is transferred to control unit; Control unit transmits control signal respectively to line traffic control power-transfer clutch and brake auxiliary device according to current state output signals, the step controlling vehicle start also comprises: control unit judges whether gear is 1 grade or reverse gear, if, then send power-transfer clutch in conjunction with control signal to line traffic control power-transfer clutch, the combination degree of control clutch according to the aperture of throttle gate and the pressure of master brake cylinder.
In certain embodiments, vehicle condition detection device can also comprise: clutch oil cylinder displacement pickup.Vehicle condition detection device detects the current state of vehicle, and step current state output signals being transferred to control unit also comprises: the displacement of clutch oil cylinder displacement sensor clutch oil cylinder, and this displacement is transferred to control unit; Control unit transmits control signal respectively to line traffic control power-transfer clutch and brake auxiliary device according to current state output signals, and the step controlling vehicle start also comprises: control unit obtains the combination degree of power-transfer clutch according to this displacement.
In certain embodiments, control unit sends power-transfer clutch in conjunction with control signal according to aperture and pressure to line traffic control power-transfer clutch, the step of the combination degree of control clutch comprises: control unit is according to the sense of motion of the Stress control clutch control valve switch clutch oil cylinder in the aperture of throttle gate and master brake cylinder, and hydraulic oil is transported to clutch oil cylinder from fuel tank by control variable pump, with the combination degree of control clutch.
In certain embodiments, control unit transmits control signal respectively to line traffic control power-transfer clutch and brake auxiliary device according to current state output signals, the step controlling vehicle start also comprises: control unit sends braking to brake auxiliary device and performs control signal, switch the control position of brake control valve, close brake-pressure controller, hydraulic oil is transported in wheel braking wheel cylinder by brake pump, promotes brake plate and wheel is braked; When pressure reaches preset pressure value, keep the control position of brake control valve constant, by pass valve starts overflow; And change in the aperture of throttle gate, when namely preparing starting, brake-pressure controller is regulated, reduce the pressure of master brake cylinder.
In certain embodiments, control unit transmits control signal respectively to line traffic control power-transfer clutch and brake auxiliary device according to current state output signals, and the step controlling vehicle start also comprises: control unit judges whether to stop working, and if so, then keeps braking quiescence; Otherwise judge whether the speed of a motor vehicle is greater than pre-set velocity value, if so, then determine that vehicle completes starting, opens completely by brake-pressure controller; Otherwise again transmit control signal respectively to line traffic control power-transfer clutch and brake auxiliary device.
Fig. 7 is the diagram of circuit of the method for starting illustrated according to other embodiments of the utility model.
Step S701, judges whether the speed of a motor vehicle equals zero.If so, process enters step S702, otherwise enters step S708.
Step S702, judges whether inclination angle is greater than default inclination value.If so, process enters step S703, otherwise enters step S708.
Step S703, starts line traffic control power-transfer clutch and brake auxiliary device.
Step S704, judge whether it is 1 grade or reverse gear, and whether throttle opening becomes large.If so, process enters step S705, otherwise returns step S703.
Step S705, controls line traffic control power-transfer clutch and brake auxiliary device, the combination degree of control clutch, changes brake system pressure.
Step S706, judges whether to stop working.If so, process returns step S703, otherwise enters step S707.
Step S707, judges whether the speed of a motor vehicle is greater than pre-set velocity value.If so, process enters step S708; Otherwise return step S705, namely again control line traffic control power-transfer clutch and brake auxiliary device, regulate combination degree and the brake system pressure of power-transfer clutch.
Step S708, closes starting system.
Starting system convenient operation of the present utility model, only needs chaufeur accelerator pedal just can realize uphill starting smoothly, reduces driver tired.Adopting line traffic control power-transfer clutch, accurate control can be realized, preventing chaufeur from causing because lacking experience power-transfer clutch in conjunction with too fast and make engine off.Adopt brake auxiliary device, accurately can control brake system pressure, can not slip car during chaufeur loosen the brake accelerator pedal, brake-pressure can control in real time along with throttle opening and power-transfer clutch combination degree.
So far, the utility model is described in detail.In order to avoid covering design of the present utility model, details more known in the field are not described.Those skilled in the art, according to description above, can understand how to implement technical scheme disclosed herein completely.
Although be described in detail specific embodiments more of the present utility model by example, it should be appreciated by those skilled in the art, above example is only to be described, instead of in order to limit scope of the present utility model.It should be appreciated by those skilled in the art, when not departing from scope and spirit of the present utility model, above embodiment can be modified.Scope of the present utility model is limited by claims.
Claims (9)
1. start to walk a system, it is characterized in that, comprising:
Vehicle condition detection device, control unit, line traffic control power-transfer clutch and brake auxiliary device;
Described vehicle condition detection device, described line traffic control power-transfer clutch are connected with described control unit respectively with described brake auxiliary device;
Described vehicle condition detection device detects the current state of vehicle, and current state output signals is transferred to described control unit; Described control unit transmits control signal respectively to described line traffic control power-transfer clutch and described brake auxiliary device, controls vehicle start.
2. start to walk system according to claim 1, it is characterized in that,
Described vehicle condition detection device comprises:
Car speed sensor, is electrically connected with described control unit, measures the speed of described vehicle, and described speed is transferred to described control unit;
Obliquity sensor, is electrically connected with described control unit, measures the inclination angle of described vehicle, and described inclination angle is transferred to described control unit.
3. start to walk system according to claim 1 or 2, it is characterized in that,
Described vehicle condition detection device also comprises:
Engine load sensor, is electrically connected with described control unit, measures the aperture of throttle gate, and described aperture is transferred to described control unit;
Pressure sensor, is electrically connected with described control unit, the pressure in the master brake cylinder of measuring vehicle, and by described pressure transmission to described control unit;
Gear position sensor, is electrically connected with described control unit, the gear of measuring vehicle, and described gear is transferred to described control unit.
4. start to walk system according to claim 3, it is characterized in that,
Described vehicle condition detection device also comprises:
Clutch oil cylinder displacement pickup, is electrically connected with described control unit, the displacement of gaging clutch oil cylinder, and described displacement is transferred to described control unit.
5. start to walk system according to claim 3, it is characterized in that,
Described line traffic control power-transfer clutch comprises:
Controllable capacity pump, clutch control valve and clutch oil cylinder;
Wherein, described controllable capacity pump and described clutch control valve are electrically connected with described control unit respectively; Described controllable capacity pump is connected with described clutch control valve by oil circuit, and described clutch control valve is connected with described clutch oil cylinder by oil circuit.
6. start to walk system according to claim 5, it is characterized in that,
Described line traffic control power-transfer clutch also comprises:
Pulling force sensor, is electrically connected with described control unit, the pulling force of gaging clutch pedal, and by pulling force Signal transmissions to described control unit.
7. start to walk system according to claim 3, it is characterized in that,
Described brake auxiliary device comprises:
Brake pump, brake control valve, brake-pressure controller and by pass valve;
Wherein, described brake control valve and described brake-pressure controller are electrically connected with described control unit respectively; Described brake pump is connected with described brake control valve by oil circuit, described brake control valve is connected with described brake-pressure controller by oil circuit, described brake-pressure controller is connected with wheel braking wheel cylinder by oil circuit, and described by pass valve is connected with described brake control valve and fuel tank respectively by oil circuit.
8. start to walk system according to claim 1, it is characterized in that,
Described control unit is electronic control unit ECU.
9. an automobile, is characterized in that, comprising:
Starting system as described in as arbitrary in claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520417082.XU CN204801766U (en) | 2015-06-16 | 2015-06-16 | Starting system and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520417082.XU CN204801766U (en) | 2015-06-16 | 2015-06-16 | Starting system and car |
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| Publication Number | Publication Date |
|---|---|
| CN204801766U true CN204801766U (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520417082.XU Expired - Fee Related CN204801766U (en) | 2015-06-16 | 2015-06-16 | Starting system and car |
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| Country | Link |
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| CN (1) | CN204801766U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107585021A (en) * | 2017-07-14 | 2018-01-16 | 董博 | Manual car ramp starting auxiliary device |
| CN107763113A (en) * | 2017-09-18 | 2018-03-06 | 宝沃汽车（中国）有限公司 | Clutch control system, clutch for clutch control method and vehicle |
| CN112572163A (en) * | 2020-12-31 | 2021-03-30 | 华南理工大学 | Automobile hill starting assisting control system and method based on brake-by-wire |
| CN114458459A (en) * | 2022-01-27 | 2022-05-10 | 中国第一汽车股份有限公司 | Method and system for improving engine starting smoothness through hydraulic assistance |
-
2015
- 2015-06-16 CN CN201520417082.XU patent/CN204801766U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107585021A (en) * | 2017-07-14 | 2018-01-16 | 董博 | Manual car ramp starting auxiliary device |
| CN107585021B (en) * | 2017-07-14 | 2024-02-20 | 董博 | Hill starting auxiliary device for manual gear automobile |
| CN107763113A (en) * | 2017-09-18 | 2018-03-06 | 宝沃汽车（中国）有限公司 | Clutch control system, clutch for clutch control method and vehicle |
| CN112572163A (en) * | 2020-12-31 | 2021-03-30 | 华南理工大学 | Automobile hill starting assisting control system and method based on brake-by-wire |
| CN112572163B (en) * | 2020-12-31 | 2022-08-16 | 华南理工大学 | Automobile hill starting assisting control system and method based on brake-by-wire |
| CN114458459A (en) * | 2022-01-27 | 2022-05-10 | 中国第一汽车股份有限公司 | Method and system for improving engine starting smoothness through hydraulic assistance |
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