CN104340041A - Hybrid electric vehicle - Google Patents
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- CN104340041A CN104340041A CN201310311039.0A CN201310311039A CN104340041A CN 104340041 A CN104340041 A CN 104340041A CN 201310311039 A CN201310311039 A CN 201310311039A CN 104340041 A CN104340041 A CN 104340041A
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Abstract
The invention discloses a hybrid electric vehicle which comprises an engine assembly, a first radiator, a turbocharger, an intercooler, a driving motor assembly and second radiator, wherein the first radiator is used for cooling the engine assembly, the turbocharger utilizes energy of exhaust gas from an exhaust passage of the engine assembly to supercharge air entering the turbocharger, the intercooler is used for cooling the air supercharged by the turbocharger and providing cooled air to the engine assembly, the second radiator is arranged in front of the first radiator, a first circulating cooling pipeline is connected between the second radiator and the driving motor assembly, and a second circulating cooling pipeline is connected between the second radiator and the intercooler. A radiator for individually cooling the driving motor assembly and a radiator for individually cooling the intercooler are integrated to form a second radiator for the hybrid electric vehicle, wind resistance can be greatly reduced, heat radiation effect can be improved, and the hybrid electric vehicle is good in practicability.
Description
Technical field
The present invention relates to automotive field, in particular to a kind of hybrid vehicle.
Background technology
Along with the development of automobile, for improving fuel economy, blow-fed engine assembly and hybrid power are two developing direction of follow-up auto trade.In conventional truck design, supercharging dynamic assembly and hybrid power generally use respectively, but the raising required along with the aspect such as oil consumption, discharge and power, supercharging dynamic assembly coupling becomes main flow in hybrid electric vehicle.
For this reason, the cooling of the conventional supercharging dynamic assembly of cooling system demand fulfillment, needs again the electric elements in cooling and mixing power vehicle.Needing the radiator element of cooling system to get more and more like this, needing the cooling system arranged to get more and more, namely for the high temperature heat sink of cooled engine, for the low-temperature radiator of cooling intercooler and the low-temperature radiator for cooling electric elements.The space of limited front deck, causes the cooling system of vehicle to be arranged more and more difficult.Along with radiator arranges the increase of quantity, front deck system wind resistance is increasing, and the spatial joint clearance of front deck is more and more less, and then causes radiating effect to be deteriorated.
Summary of the invention
The present invention is intended at least to solve one of technical matters existed in prior art.For this reason, one object of the present invention is to propose a kind of hybrid vehicle, and this hybrid vehicle radiating effect is better.
According to hybrid vehicle of the present invention, comprising: engine assembly; First radiator, the first radiator is used for cooled engine assembly; Turbocharger, turbocharger utilizes the energy from the waste gas of the exhaust channel of engine assembly to carry out supercharging to the air entering turbocharger; Intercooler, intercooler is for cooling by turbocharger supercharged air and being provided to engine assembly through overcooled air; Drive motor assembly; Second radiator, the second radiator is located at before the first radiator, is connected with the first circulating cooling pipeline between the second radiator and drive motor assembly, and is connected with the second circulating cooling pipeline between the second radiator and intercooler.
According to the hybrid vehicle of the embodiment of the present invention by the independent radiator being used for cooling drive motor assembly and the independent radiator that is used for cooling intercooler are integrated into the second radiator, greatly can reduce windage, improving radiating effect, practicality is good.
In addition, according to hybrid vehicle of the present invention, also there is following additional technical feature:
Also comprise the first water pump and the second water pump according to hybrid vehicle of the present invention, the first water pump is located on the first circulating cooling pipeline, and the second water pump is located on the second circulating cooling pipeline.Power can be provided for cooling-liquid cycle like this, promote refrigerant fluid circulation, promote cooling performance.
The output speed of the first water pump and the second water pump is adjustable.Can by the flow regulating the output speed of the first water pump and the second water pump to regulate refrigerant fluid, thus hybrid vehicle can be made to reach better cooling performance like this.
Also comprise first flow control apparatus and second quantity regulating device according to hybrid vehicle of the present invention, first flow control apparatus is located on the first circulating cooling pipeline, and second quantity regulating device is located on the second circulating cooling pipeline.
First flow control apparatus and second quantity regulating device are flow control valve.The flow of refrigerant fluid can be regulated so further, reach better cooling performance.
Also comprise the first common-use tunnel and the second common-use tunnel according to hybrid vehicle of the present invention, the first circulating cooling pipeline is connected with the second radiator with the second common-use tunnel respectively by the first common-use tunnel with the two ends of each in the second circulating cooling pipeline; Also comprise the first check valve and the second check valve according to hybrid vehicle of the present invention, the first check valve is located on the first circulating cooling pipeline, and the second check valve is located on the second circulating cooling pipeline.
Hybrid vehicle according to the present invention also comprises temperature measuring equipment, and temperature measuring equipment to be located on the first circulation line and to be positioned at the downstream of drive motor assembly.Temperature measuring equipment can detect the cooling-liquid temperature after refrigerant fluid cooling drive motor assembly.
Temperature measuring equipment is temperature sensor.
The maximum operation temperature of drive motor assembly is Tmax, the temperature that refrigerant fluid in the first circulating cooling pipeline measured by temperature measuring equipment is T, then 0 < T≤Tmax, wherein the rotating speed of the first water pump and the measuring tempeature T of temperature measuring equipment change with being proportionate.The temperature of refrigerant fluid is higher, the operating temperature of drive motor assembly is also higher, more refrigerant fluid is so just needed to remove cooling drive motor assembly, therefore the rotating speed of the first water pump increases, just can transport more refrigerant fluid for cooling drive motor assembly, make drive motor assembly can under desirable temperature environment stable operation, improve the stability of Full Vehicle System.
When the intake temperature of driving engine reaches default the highest intake temperature, the temperature of the refrigerant fluid in the first circulating cooling pipeline is T1, wherein T and T1 and Tmax meets following relational expression: as 0 < T≤T1, and the rotating speed of the second water pump and the measuring tempeature T of temperature measuring equipment are that negative correlation ground changes; As T1 < T < Tmax, the rotating speed of the second water pump is identical with the rotating speed of the second water pump during T=T1; As T=Tmax, the rotating speed of the second water pump is zero and the air compressor of turbocharger quits work.Such hybrid vehicle can preferentially cool drive motor assembly, make drive motor assembly can at the temperature being less than maximum operation temperature Tmax stable operation, improve the stability of Full Vehicle System.
Turbocharger comprises turbine wheel, blower impeller, turbine shaft, compressorshaft and power-transfer clutch, turbine wheel is connected with turbine shaft and central axis around turbine shaft rotates, blower impeller is connected with compressorshaft and central axis around compressorshaft rotates, and compressorshaft and turbine shaft are connected by power-transfer clutch and the central axis of compressorshaft rotates to rotate with the central axis of turbine shaft and overlaps.
Power-transfer clutch is magnetic clutch.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the schematic diagram of hybrid vehicle according to an embodiment of the invention;
Fig. 2 is the schematic diagram of hybrid vehicle in accordance with another embodiment of the present invention;
Fig. 3 is the schematic diagram of the turbocharger of hybrid vehicle according to an embodiment of the invention;
Fig. 4 is the relation schematic diagram of cooling-liquid temperature in the rotating speed of the first water pump of hybrid vehicle according to an embodiment of the invention and the first circulating cooling pipeline;
Fig. 5 is the relation schematic diagram of cooling-liquid temperature in the rotating speed of the second water pump of hybrid vehicle according to an embodiment of the invention and the first circulating cooling pipeline.
Reference list:
Hybrid vehicle 100; Engine assembly 1; First radiator 2; The couplings such as connecting hose 21,51; Intercooler 3; Drive motor assembly 4; Second radiator 5; First water pump 52; Second water pump 53; First flow control apparatus 54; Second quantity regulating device 55; First check valve 56; Second check valve 57; Temperature measuring equipment 58; Control ECU6; Turbocharger 7; Power-transfer clutch 71; Turbo-machine 73; Turbine wheel 731; Turbine shaft 732; Air compressor 74; Blower impeller 741; Compressorshaft 742; Housing 75; Exhaust gas inlet 76; Waste gas outlet 77; Air intlet 78; Air discharge port 79; First circulating cooling pipeline 8; Second circulating cooling pipeline 9; First common-use tunnel 20; Second common-use tunnel 22.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, particular case above-mentioned term concrete meaning in the present invention can be understood.
Below with reference to Fig. 1 to Fig. 5, the hybrid vehicle 100 according to the embodiment of the present invention is described.
According to the hybrid vehicle 100 of the embodiment of the present invention, comprise engine assembly 1, first radiator 2, turbocharger 7, intercooler 3, drive motor assembly 4 and the second radiator 5, and volume control device, temperature measuring equipment and control ECU.
Wherein engine assembly 1 is by incendiary oil for automobile provides power, and the temperature of engine assembly 1 is general higher.
First radiator 2 is for cooled engine assembly 1.First radiator 2 is connected with engine assembly 1 by the couplings such as connecting hose 21, refrigerant fluid after cooling such as water is carried to engine assembly 1 by the first radiator 2, such refrigerant fluid just can cooled engine assembly 1, reduces the temperature of engine assembly 1.
Turbocharger 7 utilizes the energy of the waste gas of the exhaust channel from engine assembly 1 to carry out supercharging to the air entering turbocharger 7.Such as, turbocharger 7 can comprise turbo-machine 73 and the air compressor 74 of coaxial setting, the high-temp waste gas that driving engine is discharged can enter turbo-machine 73, waste gas is expansion work in turbo-machine 73, promote turbine wheel 731 High Rotation Speed to rotate to drive blower impeller 741, blower impeller 741 compresses the air entered in air compressor 74 housing, and the air after compression is flowed to engine chamber.
Intercooler 3 is for cooling by the air of turbocharger 7 supercharging and being provided to engine assembly 1 through overcooled air.That is, intercooler 3 can be cooled through air compressor 74 compress after air.
Drive motor assembly 4 is also for automobile provides power, be understandable that, drive motor assembly 4 has been prior art and being well known for ordinary skill in the art, does not therefore illustrate the structure of drive motor assembly 4, principle of work, work Intervention Timing here.
Second radiator 5 is located at before the first radiator 2, and that is, first air passes through and cooling the second radiator 5, and then this part air cools the first radiator 2 again.Second radiator 5 is for cooling drive motor assembly 4 and intercooler 3, that is, second radiator 5 is for cooling the air in electric elements and air system, and air themperature in electric elements and air system is more much lower than the temperature of engine assembly 1, so air preferentially passes through and cools the second radiator 5, the air having cooled the second radiator 5 like this can also cool the first radiator 2 with remaining valid.
Be connected with the first circulating cooling pipeline 8 between second radiator 5 and drive motor assembly 4, and be connected with the second circulating cooling pipeline 9 between the second radiator 5 and intercooler 3.That is, the refrigerant fluid flowed out from the second radiator 5 flows through drive motor assembly 4 respectively and intercooler 3 also independently cools drive motor assembly 4 and intercooler 3.Thus, compare and be conventionally used to the independent radiator of cooling drive motor assembly 4 and the independent radiator for cooling intercooler 3, the quantity of radiator reduces one, can reduce windage like this, and convenient layout, reduces costs.
Alternatively, the second radiator 5 is connected by the couplings such as connecting hose 51 with drive motor assembly 4, so just forms the first circulating cooling pipeline 8.Alternatively, the second radiator 5 is connected by the couplings such as connecting hose 51 with between intercooler 3, so just forms the second circulating cooling pipeline 9.
According to the hybrid vehicle 100 of the embodiment of the present invention by the independent radiator being used for cooling drive motor assembly 4 and the independent radiator that is used for cooling intercooler 3 are integrated into the second radiator 5, thus the quantity of radiator can be reduced, reduce windage, simultaneously conveniently to arrange and cost is low, and this second radiator 5 is positioned at the front side of the first radiator, the cooling requirements of drive motor assembly 4, intercooler 3 and engine assembly 1 therefore can be met better.
Volume control device, are arranged on the first circulating cooling pipeline 8 and the second circulating cooling pipeline 9, for regulating the coolant flow rate of the first circulating cooling pipeline 8 and the second circulating cooling pipeline 9.Described volume control device can regulate the coolant flow rate of the first circulating cooling pipeline 8 and the second circulating cooling pipeline 9, so just can as the case may be and correspondingly regulate the coolant flow rate of the first circulating cooling pipeline 8 and the second circulating cooling pipeline 9 to reach best cooling performance.
In one embodiment of the invention, as shown in Figure 1, described volume control device comprise the first water pump 52 and the second water pump 53, first water pump 52 is located on the first circulating cooling pipeline 8, and the second water pump 53 is located on the second circulating cooling pipeline 9.First water pump 52 and the second water pump 53 all can be electric water pump.
Such first water pump 52 provides power for the cooling-liquid cycle of cooling drive motor assembly 4, promotes that the refrigerant fluid of the first circulating cooling pipeline 8 circulates, promotes cooling performance.
In like manner, the second water pump 53 provides power for the cooling-liquid cycle of cooling intercooler 3, promotes that the refrigerant fluid of the second circulating cooling pipeline 9 circulates, and promotes cooling performance.
Further, the output speed of the first water pump 52 and the second water pump 53 is adjustable.That is, by the coolant flow rate regulating the output speed of the first water pump 52 and the second water pump 53 can regulate the first circulating cooling pipeline 8 and the second circulating cooling pipeline 9, so just can as the case may be and correspondingly regulate the output speed of the first water pump 52 and the second water pump 53 to reach best cooling performance.
In one embodiment of the invention, as shown in Figure 1, described volume control device also comprise first flow control apparatus 54 and second quantity regulating device 55, first flow control apparatus 54 is located at for regulating the flow of the refrigerant fluid in the first circulating cooling pipeline 8 on the first circulating cooling pipeline 8, and second quantity regulating device 55 is located on the second circulating cooling pipeline 9 for regulating the flow of the refrigerant fluid in the second circulating cooling pipeline 9.First flow control apparatus 54 and second quantity regulating device 55 can be flow control valve, can the uninterrupted of controlled cooling model liquid by the aperture of adjust flux control cock
First flow control apparatus 54 is located on the first circulating cooling pipeline 8, can be regulated the coolant flow rate of the first circulating cooling pipeline 8 like this, thus can affect the cooling performance of drive motor assembly 4 by first flow control apparatus 54.Second quantity regulating device 55 is located on the second circulating cooling pipeline 9, can be regulated the coolant flow rate of the second circulating cooling pipeline 9 like this, thus can affect the cooling performance of intercooler 3 by second quantity regulating device 55.
The refrigerant fluid of the second radiator 5 should cool drive motor assembly 4 cooling intercooler 3 again, so need the coolant flow rate to the first circulating cooling pipeline 8 and the second circulating cooling pipeline 9 by the first water pump 52 and the second water pump 53, first flow control apparatus 54 and second quantity regulating device 55 to distribute, to reach the cooling performance of total optimization.
Control ECU, the cooling-liquid temperature that described control ECU feeds back according to temperature measuring equipment, regulates the coolant flow rate of the first circulating cooling pipeline 8 and the second circulating cooling pipeline 9 for control flow check amount control device.Be understandable that, the first water pump 52 and the second water pump 53, first flow control apparatus 54 and second quantity regulating device 55 can be controlled by the control ECU6 of hybrid vehicle.
In another embodiment of the present invention, as shown in Figure 2, volume control device do not comprise first flow control apparatus 54 and second quantity regulating device 55, and regulate the coolant flow rate of the first circulating cooling pipeline 8 and the second circulating cooling pipeline 9 only by the output speed of adjustment first water pump 52 and the second water pump 53.
According to one embodiment of present invention, as shown in Figure 1, hybrid vehicle 100 also comprises the first common-use tunnel 20 and the second common-use tunnel 22, first circulating cooling pipeline 8 is connected with the second radiator 5 with the second common-use tunnel 22 respectively by the first common-use tunnel 20 with the two ends of each in the second circulating cooling pipeline 9.In other words, one end of the first common-use tunnel 20 is connected with the second radiator 5, and the other end of the first common-use tunnel 20 is connected with the upstream extremity of the first circulating cooling pipeline 8 with the second circulating cooling pipeline 9 respectively.One end of second common-use tunnel 22 is connected with the downstream end of the first circulating cooling pipeline 8 with the second circulating cooling pipeline 9 respectively, and the other end of the second common-use tunnel 22 is connected with the second radiator 5.
In the second radiator 5, first cooled refrigerant fluid enters the first common-use tunnel 20 after discharging from the second radiator 5 like this, dividing from the first common-use tunnel 20 flows in the first circulating cooling pipeline 8 and the second circulating cooling pipeline 9 again, after refrigerant fluid in first circulating cooling pipeline 8 and the second circulating cooling pipeline 9 has cooled drive motor assembly 4 and intercooler 3 respectively, converge to again in the second common-use tunnel 22, and turn back to cooling the second radiator 5 from the second common-use tunnel 22.Be understandable that, when the second water pump 53 does not work, the refrigerant fluid in the first common-use tunnel 20 is all sent in the first circulating cooling pipeline 8, cooling drive motor assembly 4.
In one embodiment of the invention, as depicted in figs. 1 and 2, hybrid vehicle 100 also comprises the first check valve 56 and the second check valve 57, first check valve 56 is located on the first circulating cooling pipeline 8, and the second check valve 57 is located on the second circulating cooling pipeline 9.
First check valve 56 is located on the first circulating cooling pipeline 8, can ensure that refrigerant fluid can only nonreturn flow in the first circulating cooling pipeline 8, can prevent the refrigerant fluid of the second circulating cooling pipeline 9 from refluxing in the first circulating cooling pipeline 8 like this, the cooling-liquid cycle in the first circulating cooling pipeline 8 is stoped to flow, greatly affect the cooling performance of the first circulating cooling pipeline 8, that is, the cooling performance of drive motor assembly 4 is greatly affected.In like manner, second check valve 57 is located on the second circulating cooling pipeline 9, can ensure that refrigerant fluid can only nonreturn flow in the second circulating cooling pipeline 9, can prevent the refrigerant fluid of the first circulating cooling pipeline 8 from refluxing in the second circulating cooling pipeline 9 like this, the cooling-liquid cycle in the second circulating cooling pipeline 9 is stoped to flow, greatly affect the cooling performance of the second circulating cooling pipeline 9, that is, greatly affect the cooling performance of intercooler 3.
In one embodiment of the invention, as depicted in figs. 1 and 2, hybrid vehicle 100 also comprises temperature measuring equipment 58, and described temperature measuring equipment is located on the first circulating cooling pipeline, and for detecting the temperature of refrigerant fluid, such as, temperature measuring equipment 58 can be temperature sensor.Say further, temperature measuring equipment 58 to be located on the first circulation line and to be positioned at the downstream of drive motor assembly 4.In other words, temperature measuring equipment 58 detects the cooling-liquid temperature after refrigerant fluid cooling drive motor assembly 4.
Be understandable that, the refrigerant fluid in the downstream of drive motor assembly 4 is also higher comparatively speaking in the temperature of the local refrigerant fluid the closer to drive motor assembly 4, and the cooling-liquid temperature that temperature measuring equipment 58 is measured also more can reflect the operating temperature of drive motor assembly 4.In a preferred embodiment of the invention, temperature measuring equipment 58 arranges the temperature for measuring the refrigerant fluid just having cooled drive motor assembly 4 near drive motor assembly 4, to reflect the operating temperature of drive motor assembly 4 more realistically, control ECU6 better more reasonably can distribute refrigerant fluid as the case may be like this.
Certainly, be understandable that, according to actual needs, hybrid vehicle 100 can arrange multiple temperature measuring equipment 58 in multiple place.
In one embodiment of the invention, the maximum operation temperature of drive motor assembly 4 is Tmax, and the temperature that refrigerant fluid in the first circulating cooling pipeline 8 measured by temperature measuring equipment 58 is T, then 0 < T≤Tmax.Wherein, the maximum operation temperature of drive motor assembly 4 can be decided by the characteristic of drive motor assembly 4, and for the drive motor assembly 4 of different hybrid vehicle 100, this maximum operation temperature can be identical, can certainly be different.
Be understandable that, the maximum operation temperature Tmax of drive motor assembly 4 is here the numerical value preset according to those skilled in the art, when the temperature of drive motor assembly 4 exceedes this maximum operation temperature Tmax, drive motor assembly 4 inefficiency may be caused, even may damage drive motor assembly 4 time serious, therefore the operating temperature of drive motor assembly 4 is preferably at this below maximum operation temperature Tmax.When the temperature of drive motor assembly 4 is no more than this Tmax, drive motor assembly 4 can normally, stable operation.For the ordinary skill in the art, Tmax can carry out adaptive settings according to the characteristic of different driving motor assembly 4, and this is all appreciated that and easily realizes for the ordinary skill in the art.
Described temperature measuring equipment 58 is connected with control ECU6, cooling-liquid temperature is fed back to control ECU6 by described temperature measuring equipment 58, described control ECU6 is according to above-mentioned cooling-liquid temperature, control the coolant flow rate of the first circulating cooling pipeline 8 and the second circulating cooling pipeline 9, thus make drive motor assembly 4 can under desirable temperature environment stable operation, improve the stability of Full Vehicle System.Can be understood as, described control ECU6 is according to the temperature of refrigerant fluid, control the first water pump 52 and the second water pump 53, first flow control apparatus 54 and second quantity regulating device 55, the coolant flow rate of the first circulating cooling pipeline 8 and the second circulating cooling pipeline 9 is distributed, to reach the cooling performance of total optimization.
In an embodiment provided by the invention, the rotating speed of the first water pump 52 and the measuring tempeature T of temperature measuring equipment 58 change with being proportionate, i.e. the trend of proportional.That is, the temperature T that temperature measuring equipment 58 is measured is higher, and the rotating speed of the first water pump 52 is also higher, and the temperature T that temperature measuring equipment 58 is measured is lower, and the rotating speed of the first water pump 52 is also lower.
With reference to figure 4, the cooling-liquid temperature that temperature measuring equipment 58 is measured is that T(T comprises T4, T3, T2, T1), wherein T4, T3, T2, T1 are the concrete cooling-liquid temperature that temperature measuring equipment 58 is measured, and T4, T3, T2, T1 meet lower relation of plane: T4<T3<T2<T1.The rotating speed of the first water pump 52 is n, and wherein n1, n2, n3, n4 are the concrete rotating speed of the first water pump 52 and meet lower relation of plane: n1<n2<n3<n4.As can be seen from Figure 4, along with the rising having cooled the cooling-liquid temperature T of drive motor assembly 4 in the first circulating cooling pipeline 8, the rotating speed n of the first water pump 52 also increases.
It is pointed out that T1 is the temperature of the refrigerant fluid when the intake temperature of driving engine reaches default the highest intake temperature in the first circulating cooling pipeline.Wherein, the rotating speed n of the first water pump 52 and measuring tempeature T of temperature measuring equipment 58 can be linear change, and can certainly be nonlinearities change, the corresponding relation between them can mate acquisition by experiment.
Be understandable that, the temperature T of refrigerant fluid is higher, show that the operating temperature of now drive motor assembly 4 is also higher, more refrigerant fluid is so just needed to remove cooling drive motor assembly 4, therefore the rotating speed of the first water pump 52 increases, just can transport more refrigerant fluid for cooling drive motor assembly 4, make drive motor assembly 4 can under desirable temperature environment stable operation, improve the stability of Full Vehicle System.
In the process that the cooling-liquid temperature of drive motor assembly 4 raises, the rotating speed of the first water pump 52 raises gradually, then the coolant flow rate flowing through drive motor assembly 4 increases, and increases the cooling performance of drive motor assembly 4.Accordingly, now the rotating speed of the second water pump 53 can decline gradually, then the coolant flow rate flowing through intercooler 3 reduces, and intake temperature raises gradually.
Further, in the process of the cooling-liquid temperature rising of drive motor assembly 4, the rotating speed of the first water pump 52 raises gradually, the coolant flow rate then cooling drive motor assembly 4 increases, the cooling performance of drive motor assembly 4 is increased, the rotating speed of the second water pump 53 declines gradually, then the coolant flow rate flowing through intercooler 3 reduces, and intake temperature raises gradually.Engine assembly 1 has the highest intake temperature, and the highest intake temperature can set as the case may be or means obtain by experiment.When the air charge temperature sensor in engine assembly 1 measures the highest intake temperature having been reached permission by the temperature of the cooled pressure gas of intercooler 3, second water pump 53 is with certain rotation speed operation to ensure the performance of driving engine, and now in corresponding first circulating cooling pipeline 8, the temperature of refrigerant fluid is T1.
As shown in Figure 5, the cooling-liquid temperature that temperature measuring equipment 58 is measured is T, wherein T4, T3, T2, T1 are the cooling-liquid temperature that temperature measuring equipment 58 is measured, and T4, T3, T2, T1 meet lower relation of plane: T4<T3<T2<T1.The rotating speed of the second water pump 53 is n ', n1 ', n2 ', n3 ', n4 ' be the rotating speed of the second water pump 53 and meet lower relation of plane: n1 ' <n2 ' <n3 ' <n4 '.It is pointed out that T1 is the temperature of the refrigerant fluid when the intake temperature of driving engine reaches default the highest intake temperature in the first circulating cooling pipeline.
As 0 < T≤T1, the rotating speed of the second water pump 53 and the measuring tempeature T of temperature measuring equipment 58 are that negative correlation ground changes, the trend namely in inversely prroportional relationship.That is, in the first circulating cooling pipeline 8 that temperature measuring equipment 58 is measured, the temperature T of refrigerant fluid is higher, and the rotating speed n ' of the second water pump 53 is also less, and in the first circulating cooling pipeline 8, the temperature T of refrigerant fluid is lower, and the rotating speed n ' of the second water pump 53 is higher.
As T=T1, when the air namely flowing to driving engine has reached the highest intake temperature of permission, the rotating speed of the second water pump 53 has been n1 '.
Be understandable that, in first circulating cooling pipeline 8, the temperature of refrigerant fluid is higher, the refrigerant fluid demand cooled drive motor assembly 4 is larger, therefore the rotating speed of the first water pump 52 preferably increases, the rotating speed of the second water pump 53 preferably reduces simultaneously, such first water pump 52 just can transport more refrigerant fluid for cooling drive motor assembly 4, make drive motor assembly 4 can under desirable temperature environment stable operation, improve the stability of Full Vehicle System.
Wherein, the rotating speed of the second water pump 53 and the measuring tempeature T of temperature measuring equipment 58 can be linear change, can certainly be nonlinearities change, the corresponding relation between them and the first water pump 52 and the rotating speed of the second water pump 53 can mate acquisition by experiment with the matching relationship of T1.
As T1 < T < Tmax, the rotating speed of the second water pump 53 is identical with the rotating speed of the second water pump 53 during T=T1.That is, when in the first circulating cooling pipeline 8, the temperature of refrigerant fluid does not reach maximum operation temperature Tmax, and when meeting T1 < T < Tmax, the rotating speed of the second water pump 53 when the rotating speed of the second water pump 53 maintains T=T1, that is, now the rotating speed of the second water pump 53 is maintained n1 '.
As T=Tmax, the rotating speed of the second water pump 53 is zero and the air compressor 74 of turbocharger 7 quits work.That is, when in first circulating cooling pipeline 8, the temperature of refrigerant fluid has reached maximum operation temperature Tmax, hybrid vehicle 100 can preferentially cool drive motor assembly 4, now the second water pump 53 shuts down, that is refrigerant fluid is not had to be transported cooling intercooler 3, refrigerant fluid in second radiator 5, all for cooling the drive motor assembly 4 in the first circulating cooling pipeline 8, reduces the temperature of drive motor assembly 4 better, improves the stability of Full Vehicle System.
Meanwhile, the air compressor 74 of turbocharger 7 also quits work.That is, the air entering engine assembly 1 is not compressed, and blow-fed engine becomes normally aspirated engine, thus reduces intake temperature, ensures the full admission temperature of intake temperature lower than driving engine as far as possible.
Simply, with reference to figure 5, as 0 < T≤T1, along with the rising having cooled the cooling-liquid temperature of drive motor assembly 4 in the first circulating cooling pipeline 8, the rotating speed of the second water pump 53 also decreases.As T=T1, the rotating speed of the second water pump 53 is n1 '.
As T1 < T < Tmax, the rotating speed of the second water pump 53 is identical with the rotating speed of the second water pump 53 during T=T1, is also n1 '.That is, when in the first circulating cooling pipeline 8, the temperature of refrigerant fluid does not reach maximum operation temperature Tmax, and when meeting T1 < T < Tmax, the rotating speed of the second water pump 53 maintains n1 '.
As T=Tmax, the rotating speed of the second water pump 53 is zero and the air compressor 74 of turbocharger 7 quits work.At this moment the refrigerant fluid in the second radiator 5 is all for cooling the drive motor assembly 4 in the first circulating cooling pipeline 8.
Be understandable that, the rotating speed n ' of the second water pump 53 and the measuring tempeature T of temperature measuring equipment 58 can be linear change, can certainly be nonlinearities change.
In one embodiment of the invention, described first flow control apparatus and second quantity regulating device and the first water pump and the second water pump with the use of, particularly, the relation that the flow aperture of first flow control apparatus and the rotating speed of the first water pump are proportionate; The relation that the flow aperture of second quantity regulating device and the rotating speed of the second water pump are proportionate.
In one embodiment of the invention, as shown in Figure 3, turbocharger 7 comprises turbo-machine 73, air compressor 74, power-transfer clutch 71, housing 75.Turbo-machine 73 comprises turbine wheel 731 and turbine shaft 732.Air compressor 74 comprises blower impeller 741 and compressorshaft 742.Power-transfer clutch 71 can be magnetic clutch, and power-transfer clutch 71 can be electrically connected with control ECU6, and ECU6 can disconnect or engage by control clutch 71.Turbine wheel 731 is connected with turbine shaft 732 and central axis around turbine shaft 732 rotates, blower impeller 741 is connected with compressorshaft 742 and central axis around compressorshaft 742 rotates, and compressorshaft 742 and turbine shaft 732 are connected by power-transfer clutch 71 and the axis of compressorshaft 742 rotates to rotate with the axis of turbine shaft 732 and overlaps.
The waste gas that engine assembly 1 is discharged enters turbocharger 7 from exhaust gas inlet 76, waste gas in turbo-machine 73 expansion work thus promote turbine wheel 731 rotate around the central axis of turbine shaft 732, turbine wheel 731 rotates and drives turbine shaft 732 to rotate together simultaneously, now power-transfer clutch 71 engages turbine shaft 732 and compressorshaft 742, turbine shaft 732 drives compressorshaft 742 to rotate together, the blower impeller 741 be connected with compressorshaft 742 so also just and then rotates, such blower impeller 741 just can the air sent here by air intlet 78 of force feed, flow out into intercooler 3 from air discharge port 79 after making supercharging air to cool.
When engine speed speeds, waste gas discharge velocity and turbine wheel 731 rotating speed also synchronously speed, blower impeller 741 just compressible more air enters cylinder, the pressure of air and density increase the more fuel that can burn, now corresponding increase fuel quantity, just can increase the horsepower output of driving engine, improve fuel economy, also can improve the discharge of driving engine simultaneously.
Wherein when T=Tmax, control ECU6 can disconnect by control clutch 71, and turbine wheel 731 dallies thus, does not drive blower impeller 741 to rotate.
Generally speaking, hybrid vehicle 100 can preferentially cool drive motor assembly 4, the second water pump 53 even can be stopped as required operating, that is refrigerant fluid is not had to be transported cooling intercooler 3, refrigerant fluid now in the second radiator 5 is all for cooling the drive motor assembly 4 in the first circulating cooling pipeline 8, make drive motor assembly 4 can at the temperature being less than maximum operation temperature Tmax stable operation, improve the stability of hybrid vehicle 100 Full Vehicle System.
In the description of this specification sheets, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (11)
1. a hybrid vehicle, is characterized in that, comprising:
Engine assembly;
First radiator, described first radiator is for cooling described engine assembly;
Turbocharger, described turbocharger utilizes the energy from the waste gas of the exhaust channel of described engine assembly to carry out supercharging to the air entering described turbocharger;
Intercooler, described intercooler is for cooling by described turbocharger supercharged air and being provided to described engine assembly through overcooled air;
Drive motor assembly;
Second radiator, described second radiator is located at before described first radiator, be connected with the first circulating cooling pipeline between described second radiator and described drive motor assembly, and be connected with the second circulating cooling pipeline between described second radiator and described intercooler;
Volume control device, described volume control device are arranged on the first circulating cooling pipeline and the second circulating cooling pipeline, for regulating the coolant flow rate of the first circulating cooling pipeline and the second circulating cooling pipeline;
Temperature measuring equipment, described temperature measuring equipment is for detecting the cooling-liquid temperature after refrigerant fluid cooling drive motor assembly;
Control ECU, connect temperature measuring equipment and volume control device respectively, the cooling-liquid temperature that described control ECU feeds back according to temperature measuring equipment, regulates the coolant flow rate of the first circulating cooling pipeline and the second circulating cooling pipeline for control flow check amount control device.
2. hybrid vehicle according to claim 1, is characterized in that, volume control device comprise the first water pump and the second water pump, and described first water pump is located on described first circulating cooling pipeline, and described second water pump is located on described second circulating cooling pipeline.
3. hybrid vehicle according to claim 2, is characterized in that, the output speed of described first water pump and described second water pump is adjustable.
4. hybrid vehicle according to claim 1, it is characterized in that, described volume control device also comprise first flow control apparatus and second quantity regulating device, described first flow control apparatus is located on described first circulating cooling pipeline, and described second quantity regulating device is located on described second circulating cooling pipeline.
5. hybrid vehicle according to claim 4, is characterized in that, described first flow control apparatus and described second quantity regulating device are flow control valve.
6. hybrid vehicle according to claim 1, it is characterized in that, described hybrid vehicle also comprises the first common-use tunnel and the second common-use tunnel, and described first circulating cooling pipeline is connected with described second radiator with described second common-use tunnel respectively by described first common-use tunnel with the two ends of each in described second circulating cooling pipeline;
Described hybrid vehicle also comprises the first check valve and the second check valve, and described first check valve is located on described first circulating cooling pipeline, and described second check valve is located on described second circulating cooling pipeline.
7. hybrid vehicle according to claim 3, is characterized in that, also comprises temperature measuring equipment, and described temperature measuring equipment to be located on described first circulation line and to be positioned at the downstream of described drive motor assembly.
8. hybrid vehicle according to claim 7, it is characterized in that, the maximum operation temperature of described drive motor assembly is Tmax, and the temperature that refrigerant fluid in described first circulating cooling pipeline measured by described temperature measuring equipment is T, then 0 < T≤Tmax, wherein
The rotating speed of described first water pump and the measuring tempeature T of described temperature measuring equipment change with being proportionate.
9. hybrid vehicle according to claim 8, it is characterized in that, when the intake temperature of described driving engine reaches default the highest intake temperature, the temperature of the refrigerant fluid in described first circulating cooling pipeline is T1, and wherein T and T1 and Tmax meets following relational expression:
As 0 < T≤T1, the rotating speed of described second water pump and the measuring tempeature T of described temperature measuring equipment are that negative correlation ground changes;
As T1 < T < Tmax, the rotating speed of described second water pump with during T=T1 described in the rotating speed of the second water pump identical;
As T=Tmax, the rotating speed of described second water pump is zero and the air compressor of described turbocharger quits work.
10. the hybrid vehicle according to claim 1 or 9, it is characterized in that, described turbocharger comprises turbine wheel, blower impeller, turbine shaft, compressorshaft and power-transfer clutch, described turbine wheel is connected with described turbine shaft and central axis around described turbine shaft rotates, described blower impeller is connected with described compressorshaft and central axis around described compressorshaft rotates, described compressorshaft and described turbine shaft are connected by described power-transfer clutch and the central axis of described compressorshaft rotates to rotate with the central axis of described turbine shaft and overlaps.
11. hybrid vehicles according to claim 10, is characterized in that, described power-transfer clutch is magnetic clutch.
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| CN108146223A (en) * | 2017-12-22 | 2018-06-12 | 东风汽车集团有限公司 | A kind of automobile high/low temperature integrated heat spreader |
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