CN212313284U - Wheel hub drive hydraulic hybrid vehicle configuration system - Google Patents
Wheel hub drive hydraulic hybrid vehicle configuration system Download PDFInfo
- Publication number
- 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
- Authority
- CN
- China
- Prior art keywords
- pressure
- variable pump
- constant
- reversing valve
- energy accumulator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Control Of Fluid Gearings (AREA)
Abstract
The utility model provides a wheel hub drive hydraulic hybrid vehicle configuration system, including vehicle controller, low pressure energy storage ware, tribit four-way reversing valve, four transmission, first two-way reversing valve, constant voltage variable pump, second two-way reversing valve, high pressure energy storage ware, shaft coupling, engine, wheel and hydraulic system pipeline; 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. The utility model discloses get rid of mechanical transmission, effectively improve the ground clearance of vehicle to improve the mobility, effectively avoid system energy loss simultaneously, improve energy utilization efficiency, be favorable to in full play hybrid vehicle's advantage.
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)
1. The wheel hub driving hydraulic hybrid power vehicle configuration system is characterized by comprising 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.
2. The system of claim 1, wherein the two of said transmissions respectively connected to the output of said constant pressure variable displacement pump and the output of said high pressure accumulator are second transmissions;
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.
3. A system according to claim 1 or 2, wherein the transmission is a variable pump/motor.
4. The system of claim 3, wherein the variable pump/motors are each electronically controlled bidirectional variable pump/motors.
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 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212313284U true CN212313284U (en) | 2021-01-08 |
Family
ID=74029497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921914954.8U Active CN212313284U (en) | 2019-11-07 | 2019-11-07 | Wheel hub drive hydraulic hybrid vehicle configuration system |
Country Status (1)
| Country | Link |
|---|---|
| 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 |
-
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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103407449B (en) | A kind of hydraulic pressure assistive drive and brake system and control method thereof | |
| CN202130300U (en) | Flywheel energy storage hydraulic driving device of hybrid power vehicle | |
| CN103223849B (en) | A kind of parallel-connection type hybrid power driver for vehicle | |
| CN202115325U (en) | Driving device of power dividing hydraulic hybrid power vehicle | |
| CN103213487B (en) | Based on the drive device for hybrid vehicle of voltage transformer, Hydraulic Pump and multi-joint motor | |
| CN100999184A (en) | Rear driven mixed power vehicle of motor hydraulic device connection type | |
| CN101081596A (en) | Transmission system of double-bridge liquid-driving mixed power automobile | |
| CN103552454B (en) | Series parallel type hydraulic hybrid vehicle power assembly system | |
| CN109080454B (en) | Electrohydraulic driving system for reducing motor power | |
| CN112572122A (en) | Power assembly of pure electric loader | |
| CN110758096A (en) | Wheel hub drive hydraulic hybrid vehicle configuration system | |
| CN103171429B (en) | Hybrid power vehicle driving device based on variable pump and quantitative multi-joint motor | |
| CN108422858A (en) | A kind of electric hydaulic multi-power driven vehicle dynamical system | |
| CN212313284U (en) | Wheel hub drive hydraulic hybrid vehicle configuration system | |
| CN102756636A (en) | Hybrid driving device for concrete mixer and concrete mixer | |
| CN110978990A (en) | Timely four-wheel drive system of hybrid electric vehicle | |
| CN107906060A (en) | Vehicle parallel type hydraulic hybrid power system and its method with energy regenerating release function | |
| CN202345361U (en) | Double-axle drive unit of electrohydraulic composite hybrid power vehicles | |
| CN113700686A (en) | Electricity-machinery-hydraulic pressure hybrid energy storage unit | |
| CN113738710A (en) | Parallel type electro-hydraulic hybrid energy storage unit | |
| CN107985290B (en) | Driving axle integrated with hydraulic auxiliary pneumatic braking device and control method thereof | |
| CN201981570U (en) | Hydraulic hybrid wheel loader integrated control system | |
| CN210454443U (en) | Distributed driving system of hybrid power frame vehicle | |
| CN2736202Y (en) | Tandem type hydraulic mixed power transmitting means for public transport automobile | |
| CN202345360U (en) | Hydrostatic transmission hybrid power drive apparatus based on hydraulic transformer vehicles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |