CN212313284U - Wheel hub drive hydraulic hybrid vehicle configuration system - Google Patents
Wheel hub drive hydraulic hybrid vehicle configuration system Download PDFInfo
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- CN212313284U CN212313284U CN201921914954.8U CN201921914954U CN212313284U CN 212313284 U CN212313284 U CN 212313284U CN 201921914954 U CN201921914954 U CN 201921914954U CN 212313284 U CN212313284 U CN 212313284U
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- 230000005540 biological transmission Effects 0.000 claims abstract description 43
- 238000006073 displacement reaction Methods 0.000 claims abstract description 12
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 4
- 239000002828 fuel tank Substances 0.000 claims 1
- 230000009347 mechanical transmission Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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Abstract
本实用新型提供一种轮毂驱动液压混合动力车辆配置系统，包括车辆控制器、低压蓄能器、三位四通换向阀、四个传动装置、第一两位两通换向阀、恒压变量泵、第二两位两通换向阀、高压蓄能器、联轴器、发动机、车轮和液压系统管路；所述车辆控制器分别与所述发动机、恒压变量泵、高压蓄能器、低压蓄能器、四个传动装置相连，所述车辆控制器控制所述发动机的运转工况、所述恒压变量泵和所述四个传动装置的排量以及所述三位四通换向阀、第一两位两通换向阀和第二两位两通换向阀的位置。本实用新型去除机械传动，有效提高车辆的离地间隙，从而提高机动性能，同时有效避免系统能量损耗，提高能量利用效率，有利于于充分发挥混合动力车辆的优势。
The utility model provides a wheel hub-driven hydraulic hybrid vehicle configuration system, comprising a vehicle controller, a low-pressure accumulator, a three-position four-way reversing valve, four transmission devices, a first two-position two-way reversing valve, a constant pressure Variable pump, second two-position two-way reversing valve, high pressure accumulator, coupling, engine, wheel and hydraulic system pipeline; the vehicle controller is respectively connected with the engine, constant pressure variable pump, high pressure energy accumulator The vehicle controller controls the operating conditions of the engine, the displacement of the constant pressure variable pump and the four transmissions, and the three-position four-way The position of the reversing valve, the first 2/2-way reversing valve and the second 2/2-way reversing valve. The utility model removes the mechanical transmission, effectively increases the ground clearance of the vehicle, thereby improving the maneuverability, and at the same time effectively avoids the system energy loss, improves the energy utilization efficiency, and is beneficial to give full play to the advantages of the hybrid vehicle.
Description
Technical Field
The utility model belongs to the technical field of vehicle hydraulic drive hybrid, in particular to wheel hub drive hydraulic hybrid vehicle configuration system.
Background
Under the condition that the technical and cost requirements of the existing pure electric vehicle are still higher, the development of the hybrid electric vehicle is a good energy-saving measure. The hydraulic hybrid power technology has the advantages of high power density, safety, reliability, small environmental pollution, high energy utilization rate and the like, and is popular among enterprises and scientific research institutions of colleges and universities. The characteristics of the hybrid power system determine that the hydraulic hybrid power technology has great application prospect in the field of medium and heavy vehicles.
The series hydraulic hybrid power technology can realize complete decoupling of the engine and the load, so that the engine runs in a region with higher fuel economy, and meanwhile, the recovery and reutilization of braking energy can be effectively realized by utilizing the four-quadrant working characteristic of the variable pump/motor, thereby effectively improving the fuel economy. In the current domestic and foreign research, the adopted serial hydraulic hybrid technical scheme cannot fully exert the advantages of the hybrid vehicle.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a wheel hub drive hydraulic hybrid vehicle configuration system solves the problem that current vehicle liquid drive hybrid power system structure is complicated, transmission efficiency is not high.
The utility model provides a following technical scheme: a wheel hub driving hydraulic hybrid power vehicle configuration system comprises a vehicle controller, a low-pressure energy accumulator, a three-position four-way reversing valve, four transmission devices, a first two-position two-way reversing valve, a constant-pressure variable pump, a second two-position two-way reversing valve, a high-pressure energy accumulator, a coupler, an engine, wheels and a hydraulic system pipeline;
the output shaft of the engine is fixedly connected with the mechanical rotating shaft of the constant-pressure variable pump through the coupler, and the high-pressure energy accumulator is connected in series with the oil outlet of the constant-pressure variable pump; the oil delivery outlet of the constant-pressure variable pump and the outlet of the high-pressure energy accumulator are respectively connected with the oil delivery inlets of the two transmission devices;
the low-pressure energy accumulator is connected with an oil inlet of the constant-pressure variable pump, and an oil delivery outlet of the constant-pressure variable pump and an outlet of the low-pressure energy accumulator are respectively connected with oil delivery inlets of the other two transmission devices;
the four transmission devices respectively and independently drive one wheel; a low-pressure pipeline of the hydraulic system pipeline is connected to an oil delivery inlet of the constant-pressure variable pump; the low-pressure energy accumulator is connected in series with an oil inlet of the constant-pressure variable pump and serves as an oil tank;
the vehicle controller is respectively connected with the engine, the constant-pressure variable pump, the high-pressure energy accumulator, the low-pressure energy accumulator and the four transmission devices, and controls the operation condition of the engine, the displacement of the constant-pressure variable pump and the four transmission devices and the positions of the three-position four-way reversing valve, the first two-position two-way reversing valve and the second two-position two-way reversing valve.
Furthermore, the two transmission devices respectively connected with the oil delivery outlet of the constant-pressure variable pump and the outlet of the high-pressure energy accumulator are second transmission devices;
and the two transmission devices which are respectively connected with the oil delivery outlet of the constant-pressure variable pump and the outlet of the high-pressure energy accumulator are first transmission devices.
Further, the transmission is a variable pump/motor.
Further, the variable pump or the motor is an electrically controlled bidirectional variable pump/motor.
The utility model has the advantages that:
(1) when the high-pressure energy accumulator and the constant-pressure variable pump work simultaneously, the high-pressure energy accumulator drives the front wheel, and the constant-pressure variable pump drives the rear wheel, so that the interference of energy flow is avoided;
(2) the utility model discloses cancelled transmission mechanisms such as derailleur, transmission shaft and transaxle of traditional vehicle, increased constant voltage variable pump, hydraulic accumulator and variable pump/motor, used hydraulic transmission to replace mechanical transmission, realized the decoupling zero of engine and vehicle operating mode, reduced the unstable operating mode of engine, cancelled idle running, made it work in best economic performance region, reduced harmful gas emission, reduced the pollution to the environment;
(3) the hydraulic accumulator is introduced to serve as a secondary energy element of hydraulic transmission, and the engine and the hydraulic accumulator work simultaneously to provide the maximum power output required by the vehicle; therefore, under the same power requirement, the engine backup power can be reduced, and the oil consumption is reduced;
(4) if the variable pump/motor is operated in the pump mode, auxiliary braking and recovery of braking energy can be realized, and the fuel economy of the vehicle is remarkably improved;
(5) four-wheel-side driving is realized through four variable pump/motors, and the dynamic property and the trafficability property of the vehicle are obviously improved;
(6) realizing stepless speed change: the displacement of the constant-pressure variable pump and the hub hydraulic motor can be continuously changed, so that the requirement of stepless speed change in a certain vehicle speed range is met, the operation of a driver is simple, and the gear shifting operation is not needed.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in fig. 1, taking a preferred embodiment of the present invention as an example, the present invention provides a wheel hub driving hydraulic hybrid vehicle configuration system, which includes a vehicle controller 1, a low-pressure energy accumulator 2, a three-position four-way directional valve 3, four transmission devices, a first two-position two-way directional valve 5, a constant-pressure variable pump 6, a second two-position two-way directional valve 7, a high-pressure energy accumulator 8, a coupling 9, an engine 10, a wheel 11 and a hydraulic system pipeline;
an output shaft of the engine 10 is fixedly connected with a mechanical rotating shaft of the constant-pressure variable pump 6 through a coupler 9, and the high-pressure energy accumulator 8 is connected in series with an oil outlet of the constant-pressure variable pump 6; the oil delivery outlet of the constant-pressure variable pump 6 and the outlet of the high-pressure energy accumulator 8 are respectively connected with the oil delivery inlets of the two transmission devices;
the low-pressure energy accumulator 2 is connected with an oil inlet of the constant-pressure variable pump 6, and an oil delivery outlet of the constant-pressure variable pump 6 and an outlet of the low-pressure energy accumulator 2 are respectively connected with oil delivery inlets of the other two transmission devices;
the four transmission devices respectively and independently drive one wheel 11; a low-pressure pipeline of the hydraulic system pipeline is connected to an oil delivery inlet of the constant-pressure variable pump 6; the low-pressure energy accumulator 2 is connected in series with an oil inlet of the constant-pressure variable pump 6 and serves as an oil tank;
the vehicle controller 1 is respectively connected with the engine 10, the constant-pressure variable pump 6, the high-pressure energy accumulator 8, the low-pressure energy accumulator 2 and the four transmission devices, and the vehicle controller 1 controls the operation condition of the engine 10, the displacement of the constant-pressure variable pump 6 and the four transmission devices and the positions of the three-position four-way reversing valve 3, the first two-position two-way reversing valve 5 and the second two-position two-way reversing valve 7.
The two transmission devices respectively connected with the oil delivery outlet of the constant-pressure variable pump 6 and the outlet of the high-pressure accumulator 8 are second transmission devices 402;
and the two transmission devices respectively connected with the oil delivery outlet of the constant-pressure variable pump 6 and the outlet of the low-pressure accumulator 2 are first transmission devices 401.
The first transmission device 401 and the second transmission device 402 are both electric control bidirectional variable pump/motors, and can realize wheel edge driving, and the rotation direction and the displacement can be changed.
The oil delivery outlets of the first transmission device 401 and the second transmission device 402 can be connected with an oil tank, and the oil tank is connected with a low-pressure pipeline of a hydraulic system pipeline;
the constant-pressure variable pump 6 adopts an electric control bidirectional variable hydraulic pump, can realize the adjustable displacement and the variable rotation direction.
The utility model discloses a concrete theory of operation as follows:
when the vehicle is starting and accelerating, the vehicle controller 1 operates according to an accelerator pedal signal. Firstly, the pressure of the high-pressure energy accumulator 8 is detected, if the pressure is insufficient, the power source engine 10 starts to work to drive the constant-pressure variable pump 6 to work, and high pressure is provided for the hydraulic system pipeline and the high-pressure energy accumulator 8 at the same time. If the pressure of the high-pressure accumulator 8 is sufficient, the high-pressure accumulator 8 alone provides pressure output for the hydraulic system to drive the variable pump/motor, and at the moment, the defects of low efficiency and high pollution in the starting process of the engine can be effectively improved.
When the vehicle runs at a constant speed, the vehicle controller 1 monitors the pressure of the high-pressure energy accumulator 8 in real time. If the pressure of the high-pressure accumulator 8 reaches the preset pressure maximum value, the engine 10 stops working, and the high-pressure accumulator 8 alone provides pressure output for the hydraulic pipeline system. When the pressure in the high pressure accumulator 8 drops to a predetermined minimum pressure, the engine 10 starts to operate, and on the one hand, the output high pressure oil is used to drive the variable displacement pump/motor, and on the other hand, the excess high pressure oil is sent to the high pressure accumulator 8 to be stored and released at an appropriate time. The engine 10 is decoupled from the vehicle running condition, works in the optimal performance area for a long time, and can obviously improve the fuel economy.
When the vehicle is in braking, the vehicle controller 1 operates according to a brake pedal signal. The variable pump/motor starts to work in the form of a pump, converts the kinetic energy of the vehicle into hydraulic energy, and stores the hydraulic energy in the high-pressure accumulator 8, so that the recovery of the braking energy is realized. When the high pressure accumulator 8 is full, the surplus hydraulic energy flows back to the oil tank through the overflow valve, and the conventional brake system is started to start braking. When the vehicle is in emergency braking, a driver steps on a brake pedal hard, and the conventional brake system works to realize emergency braking.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921914954.8U CN212313284U (en) | 2019-11-07 | 2019-11-07 | Wheel hub drive hydraulic hybrid vehicle configuration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921914954.8U CN212313284U (en) | 2019-11-07 | 2019-11-07 | Wheel hub drive hydraulic hybrid vehicle configuration system |
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| Publication Number | Publication Date |
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| CN212313284U true CN212313284U (en) | 2021-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921914954.8U Active CN212313284U (en) | 2019-11-07 | 2019-11-07 | Wheel hub drive hydraulic hybrid vehicle configuration system |
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| CN (1) | CN212313284U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220227352A1 (en) * | 2021-01-18 | 2022-07-21 | Honda Motor Co., Ltd. | Vehicle |
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2019
- 2019-11-07 CN CN201921914954.8U patent/CN212313284U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220227352A1 (en) * | 2021-01-18 | 2022-07-21 | Honda Motor Co., Ltd. | Vehicle |
| US11919506B2 (en) * | 2021-01-18 | 2024-03-05 | Honda Motor Co., Ltd. | Vehicle |
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