CN103213487B - Based on the drive device for hybrid vehicle of voltage transformer, Hydraulic Pump and multi-joint motor - Google Patents
Based on the drive device for hybrid vehicle of voltage transformer, Hydraulic Pump and multi-joint motor Download PDFInfo
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- CN103213487B CN103213487B CN201310065366.2A CN201310065366A CN103213487B CN 103213487 B CN103213487 B CN 103213487B CN 201310065366 A CN201310065366 A CN 201310065366A CN 103213487 B CN103213487 B CN 103213487B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention provides a kind of drive device for hybrid vehicle based on voltage transformer, Hydraulic Pump and multi-joint motor, comprise driving engine, fixed displacement Hydraulic Pump, power-transfer clutch, fixed displacement multi-linkage hydraulic pressure motor, check valve, high pressure accumulator, low pressure accumulator, 3 position-5 way valve and two two way selected valves.Wherein fixed displacement multi-linkage hydraulic pressure motor is made up of the HM Hydraulic Motor of two or more fixed displacement, and each motor is independently controlled by a two-bit triplet change-over valve, thus regulates the discharge capacity of fixed displacement multi-linkage hydraulic pressure motor.The actuating device of this kind of form can ensure that engine operation is in best fuel-economy district, improve driving efficiency, realize stepless change and the Brake energy recovery of vehicle, and provide pure mechanical drive, without hydraulic transformer hybrid power transmission, have the hybrid power transmission of hydraulic transformer, without hydraulic transformer pure hydrostatic drive, have pure hydrostatic drive totally 5 kinds of drive forms of hydraulic transformer.The tractive performance of vehicle can be improved, car load fuel consumption rate can be reduced again.
Description
Technical field
The present invention relates to a kind of system of vehicle transmission hybrid drive, particularly a kind of drive device for hybrid vehicle based on voltage transformer, Hydraulic Pump and multi-linkage hydraulic pressure motor.
Background technology
Energy and environment problem has become the focus that society is discussed, and energy-saving and emission-reduction have risen to the problem concerning mankind's final and decisive juncture.As one of important means tackling these problems, hybrid power includes electric hybrid powering, mechanical mixture power, hydraulic hybrid.Wherein electric hybrid powering development is by the restriction of battery technology; Mechanical mixture power is difficult to maintain the long-time high efficiency running of flywheel; Needed for hydraulic hybrid, technology is the most ripe, and power density is high, is particularly useful for Medium or severe type vehicle.Traditional hydraulic hybrid power vehicles usually adopts variable displacement pump, becomes displacement motor, by realizing the stepless change that vehicle power exports to the adjustment of Hydraulic Elements discharge capacity, makes engine operation in optimal fuel economy district simultaneously.But the change of simple dependence discharge capacity regulates vehicle power to export, and makes motor volume huge, cost increases severely, and makes vehicle in small load condition variations per hour HM Hydraulic Motor inefficiency simultaneously, the raising of car load fuel economy is had a greatly reduced quality.
Summary of the invention
In view of this, the invention provides a kind of drive device for hybrid vehicle based on voltage transformer, Hydraulic Pump and multi-joint motor, by hydraulic transformer, fixed displacement multi-linkage hydraulic pressure motor and fixed displacement Hydraulic Pump, significantly improve hydraulic hybrid power vehicles tractive performance and driving efficiency, overcome conventional hydraulic hybrid drive dynamic property poor, inefficiency when becoming displacement hydraulic motor low discharge capacity, cost is high, volume is large, the problem that weight is large.
Described actuating device comprises driving engine, high pressure accumulator, fixed displacement Hydraulic Pump, check valve, hydraulic transformer, 3 position-5 way valve, two-bit triplet change-over valve, back axle, fixed displacement multi-linkage hydraulic pressure motor, power-transfer clutch, high pressure two two way selected valves, low pressure two two-way low pressure change-over valves and low pressure accumulator.
Shown fixed displacement multi-linkage hydraulic pressure motor comprises the fixed displacement HM Hydraulic Motor of two or more different displacements; Each HM Hydraulic Motor is furnished with independently oil inlet and oil outlet, and the oil outlet of each HM Hydraulic Motor connects a two-bit triplet change-over valve; The oil inlet of described each HM Hydraulic Motor is connected with the P mouth of two-bit triplet change-over valve corresponding with it.
The annexation of this actuating device is: all hydraulic motor in described fixed displacement multi-linkage hydraulic pressure motor is coaxially connected by a transmission shaft, and one end of described transmission shaft is connected with power-transfer clutch, and the other end is connected with back axle; Described driving engine is coaxially connected with the input shaft of fixed displacement Hydraulic Pump, and the output shaft of fixed displacement Hydraulic Pump is connected with power-transfer clutch; Described back axle is for driving two trailing wheels of vehicle; The oil inlet of shown fixed displacement Hydraulic Pump is connected with the A mouth of A mouth and low pressure two two-way low pressure change-over valves of low pressure accumulator, high pressure two two-way high-pressure reversing valves respectively, and fixed displacement Hydraulic Pump oil outlet is connected with the oil inlet of check valve.The oil outlet of described check valve is connected with the T1 mouth of 3 position-5 way valve with the A mouth of high pressure accumulator, hydraulic transformer respectively; The B mouth of described hydraulic transformer is connected with the B mouth of P mouth and high pressure two two-way high-pressure reversing valves of 3 position-5 way valve respectively; The T mouth of hydraulic transformer is connected with the B mouth of low pressure two two-way low pressure change-over valves and the T2 mouth of 3 position-5 way valve respectively.The B mouth of each two-bit triplet change-over valve is connected with the A mouth of 3 position-5 way valve respectively, HM Hydraulic Motor oil outlet each in fixed displacement multi-linkage hydraulic pressure motor is connected with the A mouth of two-bit triplet change-over valve corresponding with it respectively, and in fixed displacement multi-linkage hydraulic pressure motor, each HM Hydraulic Motor oil outlet is all connected with the B mouth of 3 position-5 way valve simultaneously.
Power demand according to vehicle regulates the number of HM Hydraulic Motor in running order in fixed displacement multi-linkage hydraulic pressure motor, to regulate the discharge capacity of fixed displacement multi-linkage hydraulic pressure motor.
When described power-transfer clutch combines, when fixed displacement Hydraulic Pump, fixed displacement multi-linkage hydraulic pressure motor and hydraulic transformer all quit work, this actuating device is in pure Mechanical Driven mode, by motor-powered vehicle.
When described power-transfer clutch combines, engine drive fixed displacement Hydraulic Pump, and during by Hydraulic Transformer, this actuating device is in the combination drive mode of hydraulic transformer.
When described power-transfer clutch combines, engine drive fixed displacement Hydraulic Pump, when hydraulic transformer does not work, this actuating device is in the combination drive mode without hydraulic transformer.
When described disengaging of clutch, during hydraulic transformer work, this actuating device is in the pure hydraulic driving mode of hydraulic transformer.
When described disengaging of clutch, when hydraulic transformer quits work, this actuating device is in the pure hydraulic driving mode without hydraulic transformer.
Beneficial effect
Drive device for hybrid vehicle of the present invention combines mechanically operated high efficiency, the invariable power regulatory function of hydraulic transformer and the high efficiency of constant displacement hydraulic motor.Effectively reduce the installation discharge capacity of HM Hydraulic Motor, extend the Power output setting range of hydraulic hybrid power vehicles, improve the driving efficiency of CD-ROM drive motor, avoid conventional hydraulic hybrid power system change displacement hydraulic motor and be operated in low discharge capacity, low efficiency interval.
Simultaneously the present invention adopts engine drive hydraulic pressure fix-displacement pump to provide stable high pressure fuel source for car load, can according to the change of vehicle travel load, the combination of control clutch be separated, control the mode of operation of three position five-way valve, make vehicle be operated in different patterns; When vehicle operation is in hydraulic transformer adjustment state, voltage transformer regulates high-voltage oil liquid pressure, in conjunction with the control of fixed displacement multi-linkage hydraulic pressure motor, have greatly expanded Power output setting range; When vehicle operation regulates separately at fixed displacement multi-linkage hydraulic pressure motor, vehicle is able to high-efficiency operation, improves the fuel economy of vehicle.
Accompanying drawing explanation
Fig. 1 be vehicle move forward and voltage transformer work time the present embodiment in the schematic diagram of actuating device;
Fig. 2 is vehicle schematic diagram of actuating device in the present embodiment when moving forward and voltage transformer does not work;
Fig. 3 be vehicle brake and voltage transformer work time the present embodiment in the schematic diagram of actuating device;
The schematic diagram of Fig. 4 actuating device that is vehicle when braking and voltage transformer does not work in this present embodiment.
Wherein, 1-trailing wheel; 2-driving engine; 3-high pressure accumulator; 4-fixed displacement Hydraulic Pump; 5-check valve; 6-hydraulic transformer; 7-3 position-5 way valve; 8-two-bit triplet change-over valve; 9-back axle; 10-fixed displacement multi-linkage hydraulic pressure motor; 11-power-transfer clutch; 12-high pressure two two way selected valves; 13-low pressure two two-way low pressure change-over valves; 14-low pressure accumulator.
Detailed description of the invention
Be further described the specific embodiment of the present invention below in conjunction with drawings and Examples, following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
A kind of hydraulic hybrid power vehicles actuating device based on hydraulic transformer, fixed displacement multi-linkage hydraulic pressure motor and fixed displacement Hydraulic Pump that the present embodiment provides, as shown in Figure 1.Comprise driving engine 2, high pressure accumulator 3, fixed displacement Hydraulic Pump 4, check valve 5, hydraulic transformer 6,3 position-5 way valve 7, two-bit triplet change-over valve 8, back axle 9, fixed displacement multi-linkage hydraulic pressure motor 10, power-transfer clutch 11, high pressure two two way selected valves 12, low pressure two low pressure accumulators 13 and low pressure accumulator 14.Vehicle in the present embodiment is driven after being.
Fixed displacement multi-linkage hydraulic pressure motor 10 wherein in the present embodiment coaxially connects rear formation by the fixed displacement HM Hydraulic Motor of the different displacements of three by an axis.Each HM Hydraulic Motor is furnished with independently oil inlet, oil outlet, and the oil outlet of each HM Hydraulic Motor connects a two-bit triplet change-over valve, realizes controlling the independence of each HM Hydraulic Motor, thus provides multiple CD-ROM drive motor effective discharge array mode for car load.The oil inlet of described each HM Hydraulic Motor is connected with the P mouth of two-bit triplet change-over valve corresponding with it.
The annexation of this actuating device is: driving engine 2 is coaxially connected with the input shaft of fixed displacement Hydraulic Pump 4, the output shaft of fixed displacement Hydraulic Pump 4 is connected with fixed displacement multi-linkage hydraulic pressure motor 10 input end by power-transfer clutch 11, and the mouth of fixed displacement multi-linkage hydraulic pressure motor 10 drives two trailing wheels of vehicle by back axle 9.The oil inlet of fixed displacement Hydraulic Pump 4 is connected with the A mouth of A mouth and low pressure two two-way low pressure change-over valves 13 of low pressure accumulator 14, high pressure two two-way high-pressure reversing valves 12 respectively, and oil outlet is connected with the oil inlet of check valve 5.The oil outlet of check valve 5 is connected with the T1 mouth of 3 position-5 way valve 7 with the A mouth of high pressure accumulator, hydraulic transformer 6 respectively.The B mouth of hydraulic transformer 6 is connected with the B mouth of P mouth and high pressure two two-way high-pressure reversing valves 12 of 3 position-5 way valve 7 respectively, and the T mouth of hydraulic transformer 6 is connected with the B mouth of low pressure two two-way low pressure change-over valves 13 and the T2 mouth of 3 position-5 way valve 7 respectively.The B mouth of each two-bit triplet change-over valve connects with the A mouth of 3 position-5 way valve 7 respectively, and HM Hydraulic Motor oil outlet each in fixed displacement multi-linkage hydraulic pressure motor 10 connects with the B mouth of 3 position-5 way valve 7 and the A mouth of two-bit triplet change-over valve corresponding with it.
In the present embodiment, when described 3 position-5 way valve 7 is operated in upper, its B mouth is communicated with T1 mouth, and A mouth is communicated with T2 mouth, and P mouth ends; When being operated in meta, its A mouth is communicated with T1 mouth, and B mouth is communicated with T2 mouth, and P mouth ends; When being operated in bottom, its A mouth is communicated with P mouth, and B mouth is communicated with T2 mouth, and T1 mouth ends.Described two-bit triplet change-over valve be operated in left position at that time B mouth by, A mouth is communicated with P mouth; Its A mouth cut-off when being operated in right position, B mouth is communicated with P mouth.When described two two-way low pressure change-over valves are operated in left position, A mouth is to B mouth unilaterally connected, when being operated in right position A mouth and B mouth two-way through.
In the present embodiment, fixed displacement multi-linkage hydraulic pressure motor 10 can realize the output of 8 kinds of discharge capacities by three two-bit triplet change-over valves and three fixed displacement HM Hydraulic Motor.
The principle of work of this actuating device is:
(1) when the vehicle is moving in a forward direction, following operating mode can be specifically divided into:
(1) if the low load starting of vehicle, adopt the pure hydraulic driving mode without hydraulic transformer, power-transfer clutch 11 is separated; If now high pressure accumulator energy is sufficient, then driving engine 2, fixed displacement Hydraulic Pump 4 and hydraulic transformer 6 all do not work; 3 position-5 way valve 7 is operated in meta, according to car load power demand, determines the number of the two-bit triplet change-over valve being operated in right position, thus controls the discharge capacity of fixed displacement multi-linkage hydraulic pressure motor.Now high pressure accumulator 3 is by 3 position-5 way valve 7 and the two-bit triplet change-over valve that is operated in right position in running order HM Hydraulic Motor in fixed displacement multi-linkage hydraulic pressure motor provides high pressure oil, thus provides propulsion source for car load.When pressure in high pressure accumulator is lower than setting minimal pressure, open driving engine 2, drive liquid fixed displacement Hydraulic Pump 4 to provide propulsion source for car load.
(2) if vehicle high capacity starting or climbing, then power-transfer clutch 11 is separated, driving engine 2 starts and is operated in best fuel-economy interval, hydraulic transformer 6 works and its operating angle is just, 3 position-5 way valve work 7 is done in bottom, according to car load power demand, determine the number of the two-bit triplet change-over valve being operated in right position, thus control the discharge capacity of fixed displacement multi-linkage hydraulic pressure motor.Now car load is in the pure hydraulic driving mode of hydraulic transformer.
(3) if vehicle is in cruising condition, the speed of a motor vehicle is stablized, and the discharge capacity of required fixed displacement multi-linkage hydraulic pressure motor is less.Now power-transfer clutch 11 combines, and according to car load power demand, regulator solution pressure transformer operating angle and be operated in the number of two-bit triplet change-over valve of right position, to regulate driving engine 2 operation interval and to adapt to the change of car load travel load.When hydraulic transformer operating angle is timing, 3 position-5 way valve 7 is operated in bottom, and now car load is in the combination drive mode of hydraulic transformer; When hydraulic transformer controls to be zero, 3 position-5 way valve 7 is operated in meta, and now car load is in the hybrid power type of drive without hydraulic transformer.
(4) if vehicle operating is in high-speed working condition, then pure Mechanical Driven mode is adopted.Now power-transfer clutch 11 combines, and driving engine 2 is operated in best fuel-economy district, and two position-5 way valves 7 are operated in meta, hydraulic transformer 6 quits work, fixed displacement multi-linkage hydraulic pressure motor 10 quits work, and only drives vehicle by driving engine 2, to improve Vehicle Economy.
The driving route under the combination drive mode of hydraulic transformer that has described in operating mode (2) and operating mode (3) is:
Now low pressure two two way selected valves 13 are operated in right position, and high pressure two two way selected valves 12 are operated in left position; In the present embodiment, select to be operated in two two-bit triplet change-over valves and be operated in right position, one is operated in left position; Whole actuating device as shown in Figure 1.Driving engine 2 drives fixed displacement Hydraulic Pump 4 to work, fixed displacement Hydraulic Pump 4 by the low pressure oil liquid pump that is stored in low pressure accumulator 14 to high pressure accumulator 3.High pressure oil in high pressure accumulator 3 is by hydraulic transformer 6 transformation, and the pressure oil after transformation flows into the HM Hydraulic Motor 10 of correspondence by 3 position-5 way valve 7 (P mouth is to A mouth) and the two-bit triplet change-over valve (B mouth is to P mouth) that is operated in right position.The low pressure fluid that in fixed displacement multi-linkage hydraulic pressure motor 10, the oil outlet of HM Hydraulic Motor flows out flows back to low pressure accumulator 14 by 3 position-5 way valve 7 (B mouth is to T2 mouth) and low pressure two two way selected valves 13, forms low pressure oil way thus.The two-bit triplet change-over valve being simultaneously operated in left position makes the oil inlet of corresponding HM Hydraulic Motor in fixed displacement multi-linkage hydraulic pressure motor 10 connect low pressure oil way, makes it dally and does not do work.Last fixed displacement multi-linkage hydraulic pressure motor 10 output shaft drives wheel 1 by back axle 9.
Described in operating mode (3) without the driving route under the combination drive mode of hydraulic transformer be:
Now low pressure two two way selected valves 13 are operated in right position, and high pressure two two way selected valves 12 are operated in right position; In the present embodiment, select to be operated in two two-bit triplet change-over valves and be operated in right position, one is operated in left position; Now whole actuating device as shown in Figure 2.Driving engine 2 drives fixed displacement Hydraulic Pump 4 to work, fixed displacement Hydraulic Pump 4 is by the low pressure oil liquid pump that is stored in low pressure accumulator 14 to high pressure accumulator 3, and the high pressure oil in high pressure accumulator 3 flows into corresponding HM Hydraulic Motor 10 by 3 position-5 way valve 7 (T1 mouth is to A mouth) and the two-bit triplet change-over valve that is operated in right position.The low pressure fluid that fixed displacement multi-linkage hydraulic pressure motor 10 oil outlet flows out flows back to low pressure accumulator 14 by 3 position-5 way valve 7 (B mouth is to T2 mouth) and low pressure two two way selected valves 13, forms low pressure oil way thus.The two-bit triplet change-over valve being operated in left position makes the oil inlet of HM Hydraulic Motor corresponding in fixed displacement multi-linkage hydraulic pressure motor 10 connect low pressure oil way, and make it dally and do not do work, last fixed displacement multi-linkage hydraulic pressure motor 10 output shaft drives wheel 1 by back axle 9.
(2) when car brakeing, power-transfer clutch 11 is separated, and driving engine 2 and fixed displacement Hydraulic Pump 4 quit work;
(5) if vehicle is slowly braked, then hydraulic transformer 6 quits work, and its operating angle is zero, and 3 position-5 way valve 7 is operated in upper, and low pressure two two way selected valves 13 are operated in left position, and high pressure two two way selected valves 12 are operated in right position.The two-bit triplet change-over valve number being operated in right position is determined according to vehicle power demand, and in the present embodiment, select to be operated in a two-bit triplet change-over valve during car brakeing and be operated in right position, two are operated in left position; Now whole actuating device as shown in Figure 4.
Low pressure oil now in low pressure accumulator 14 flows into the oil inlet of corresponding HM Hydraulic Motor 10 by low pressure two two way selected valves 13,3 position-5 way valve 7 and the two-bit triplet change-over valve 8 that is operated in right position, vehicle drags fixed displacement multi-linkage hydraulic pressure motor 10, makes it be operated in pump condition.The high pressure oil that in fixed displacement multi-linkage hydraulic pressure motor 10, HM Hydraulic Motor oil outlet flows out flows back to high pressure accumulator 3 by 3 position-5 way valve 7 (B mouth is to T1 mouth), forms high-pressure oil passage, and realizes Brake energy recovery.3 position-5 way valve 7 makes the oil outlet of fixed displacement multi-linkage hydraulic pressure motor 10 be connected with high pressure accumulator 3 and maintain high pressure conditions.The two-bit triplet change-over valve 8 being operated in left position makes HM Hydraulic Motor oil inlet corresponding in fixed displacement multi-linkage hydraulic pressure motor 10 connect high-pressure oil passage, and make it dally and do not do work, last fixed displacement multi-linkage hydraulic pressure motor 10 output shaft realizes the braking of vehicle by back axle 9.
(6) if vehicle snap catch, then hydraulic transformer 6 works and operating angle is negative, then 3 position-5 way valve 7 is operated in bottom, and low pressure two two way selected valves 13 are operated in left position, and high pressure two two way selected valves 12 are operated in left position.The two-bit triplet change-over valve number being operated in right position is determined according to vehicle power demand, and in the present embodiment, select to be operated in a two-bit triplet change-over valve during car brakeing and be operated in right position, two are operated in left position; Now whole actuating device as shown in Figure 3.
Low pressure oil in low pressure accumulator 14 flows into the oil inlet of corresponding HM Hydraulic Motor by high pressure two two way selected valves 12,3 position-5 way valve 7 (P mouth is to A mouth) and the two-bit triplet change-over valve that is operated in right position, vehicle drags fixed displacement multi-linkage hydraulic pressure motor 10, makes it be operated in pump condition.The high-voltage oil liquid that in fixed displacement multi-linkage hydraulic pressure motor 10, HM Hydraulic Motor oil outlet flows out flows through the T mouth of hydraulic transformer 6 by 3 position-5 way valve 7 (B mouth is to T2 mouth), hydraulic transformer 6 changes the pressure of high-voltage oil liquid, high-voltage oil liquid after transformation flows back to high pressure accumulator 3 through the A mouth of hydraulic transformer 6, form high-pressure oil passage, realize Brake energy recovery.3 position-5 way valve 7 and low pressure two two way selected valves 13 make fixed displacement multi-linkage hydraulic pressure motor 10 oil outlet be connected with the T mouth of hydraulic transformer 6 and maintain high pressure conditions.The two-bit triplet change-over valve being operated in left position makes HM Hydraulic Motor oil inlet corresponding in fixed displacement multi-linkage hydraulic pressure motor 10 connect high-pressure oil passage, makes it dally and does not do work.Last fixed displacement multi-linkage hydraulic pressure motor 10 output shaft realizes the braking of vehicle by back axle 9.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. based on the drive device for hybrid vehicle of voltage transformer, Hydraulic Pump and multi-joint motor, it is characterized in that: comprise driving engine (2), high pressure accumulator (3), fixed displacement Hydraulic Pump (4), check valve (5), hydraulic transformer (6), 3 position-5 way valve (7), two-bit triplet change-over valve (8), back axle (9), fixed displacement multi-linkage hydraulic pressure motor (10), power-transfer clutch (11), high pressure two two way selected valves (12), low pressure two two-way low pressure change-over valves (13) and low pressure accumulator (14);
Shown fixed displacement multi-linkage hydraulic pressure motor (10) comprises the fixed displacement HM Hydraulic Motor of two or more different displacements; Each HM Hydraulic Motor is furnished with independently oil inlet and oil outlet, and the oil outlet of each HM Hydraulic Motor connects a two-bit triplet change-over valve; The oil inlet of described each HM Hydraulic Motor is connected with the P mouth of two-bit triplet change-over valve corresponding with it;
The annexation of this actuating device is: all hydraulic motor in described fixed displacement multi-linkage hydraulic pressure motor (10) is coaxially connected by a transmission shaft, one end of described transmission shaft is connected with power-transfer clutch (11), and the other end is connected with back axle (9); Described driving engine (2) is coaxially connected with the input shaft of fixed displacement Hydraulic Pump (4), and the output shaft of fixed displacement Hydraulic Pump (4) is connected with power-transfer clutch (11); Described back axle (9) is for driving two trailing wheels of vehicle; The oil inlet of shown fixed displacement Hydraulic Pump (4) is connected with the A mouth of A mouth and low pressure two two-way low pressure change-over valves (13) of low pressure accumulator (14), high pressure two two-way high-pressure reversing valves (12) respectively, and fixed displacement Hydraulic Pump (4) oil outlet is connected with the oil inlet of check valve (5); The oil outlet of described check valve (5) is connected with the T1 mouth of 3 position-5 way valve (7) with the A mouth of high pressure accumulator, hydraulic transformer (6) respectively; The B mouth of described hydraulic transformer (6) is connected with the B mouth of P mouth and high pressure two two-way high-pressure reversing valves (12) of 3 position-5 way valve (7) respectively; The T mouth of hydraulic transformer (6) is connected with the B mouth of low pressure two two-way low pressure change-over valves (13) and the T2 mouth of 3 position-5 way valve (7) respectively; The B mouth of each two-bit triplet change-over valve is connected with the A mouth of 3 position-5 way valve (7) respectively, HM Hydraulic Motor oil outlet each in fixed displacement multi-linkage hydraulic pressure motor (10) is connected with the A mouth of two-bit triplet change-over valve corresponding with it respectively, and in fixed displacement multi-linkage hydraulic pressure motor (10), the oil outlet of each HM Hydraulic Motor is all connected with the B mouth of 3 position-5 way valve (7) simultaneously.
2. the drive device for hybrid vehicle based on voltage transformer, Hydraulic Pump and multi-joint motor according to claim 1, it is characterized in that: the power demand according to vehicle regulates the number of HM Hydraulic Motor in running order in fixed displacement multi-linkage hydraulic pressure motor (10), to regulate the discharge capacity of fixed displacement multi-linkage hydraulic pressure motor (10).
3. the drive device for hybrid vehicle based on voltage transformer, Hydraulic Pump and multi-joint motor according to claim 1, it is characterized in that: when described power-transfer clutch (11) combines, when fixed displacement Hydraulic Pump (4), fixed displacement multi-linkage hydraulic pressure motor (10) and hydraulic transformer (6) all quit work, this actuating device is in pure Mechanical Driven mode, drives vehicle by driving engine (2).
4. the drive device for hybrid vehicle based on voltage transformer, Hydraulic Pump and multi-joint motor according to claim 1, it is characterized in that: when described power-transfer clutch (11) combines, driving engine (2) drives fixed displacement Hydraulic Pump (4), and during by hydraulic transformer (6) transformation, this actuating device is in the combination drive mode of hydraulic transformer.
5. the drive device for hybrid vehicle based on voltage transformer, Hydraulic Pump and multi-joint motor according to claim 1, it is characterized in that: when described power-transfer clutch (11) combines, driving engine (2) drives fixed displacement Hydraulic Pump (4), when hydraulic transformer (6) does not work, this actuating device is in the combination drive mode without hydraulic transformer.
6. the drive device for hybrid vehicle based on voltage transformer, Hydraulic Pump and multi-joint motor according to claim 1, it is characterized in that: when described power-transfer clutch (11) is separated, during hydraulic transformer (6) work, this actuating device is in the pure hydraulic driving mode of hydraulic transformer.
7. the drive device for hybrid vehicle based on voltage transformer, Hydraulic Pump and multi-joint motor according to claim 1, it is characterized in that: when described power-transfer clutch (11) is separated, when hydraulic transformer (6) quits work, this actuating device is in the pure hydraulic driving mode without hydraulic transformer.
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| CN201310065366.2A CN103213487B (en) | 2013-03-01 | 2013-03-01 | Based on the drive device for hybrid vehicle of voltage transformer, Hydraulic Pump and multi-joint motor |
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| CN201310065366.2A CN103213487B (en) | 2013-03-01 | 2013-03-01 | Based on the drive device for hybrid vehicle of voltage transformer, Hydraulic Pump and multi-joint motor |
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| CN105864231B (en) * | 2016-04-22 | 2017-12-05 | 北京理工大学 | Semitrailer hydraulic braking energy regenerating device based on hydraulic transformer and pump/motor |
| CN111536088B (en) * | 2020-05-13 | 2022-08-23 | 江苏师范大学 | Efficient mechanical-hydraulic coupling type hydraulic transformer |
| CN112253579B (en) * | 2020-10-21 | 2023-07-25 | 科大讯飞股份有限公司 | Electrohydraulic driving system control method and device, electronic equipment and storage medium |
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| CN102514474A (en) * | 2011-12-28 | 2012-06-27 | 哈尔滨工业大学 | Series-parallel combined hydraulic power system of hybrid electric vehicle |
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