CN113752824A - Recovery system of vehicle hydraulic pressure energy storage - Google Patents
Recovery system of vehicle hydraulic pressure energy storage Download PDFInfo
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- CN113752824A CN113752824A CN202111003148.7A CN202111003148A CN113752824A CN 113752824 A CN113752824 A CN 113752824A CN 202111003148 A CN202111003148 A CN 202111003148A CN 113752824 A CN113752824 A CN 113752824A
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- hydraulic
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- oil tank
- hydraulic pump
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K25/00—Auxiliary drives
- B60K25/06—Auxiliary drives from the transmission power take-off
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K25/00—Auxiliary drives
- B60K25/06—Auxiliary drives from the transmission power take-off
- B60K2025/065—Auxiliary drives from the transmission power take-off the transmission being fluidic, e.g. hydraulic
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The application discloses recovery system of vehicle hydraulic pressure energy storage for reduce the wearing and tearing to the brake block, thereby reduce the maintenance cost of whole car. The application includes: the hydraulic control system comprises a hydraulic pump clutch, a hydraulic pump, a first control valve, a first oil tank, a second oil tank and a hydraulic motor; the hydraulic pump clutch is connected with the hydraulic pump; the hydraulic pump is provided with an oil inlet and an oil outlet, the oil inlet is connected with the first oil tank, the oil outlet is connected with the second oil tank, and the hydraulic pump is used for discharging oil sucked from the first oil tank to the second oil tank; the first control valve is arranged between the hydraulic pump and the second oil tank and is used for controlling the flow rate of the discharged oil; the second oil tank is connected with the hydraulic motor; the flywheel is respectively connected with the hydraulic pump clutch and the hydraulic motor; when the electronic control unit of the engine receives a braking signal, the second oil tank is used for storing recovered oil of the engine, and the hydraulic motor is used for converting potential energy of pressure oil provided by the hydraulic pump into mechanical energy for driving the flywheel.
Description
Technical Field
The embodiment of the application relates to the field of transmission systems of whole vehicles, in particular to a recovery system for vehicle hydraulic energy storage.
Background
The whole vehicle transmission system is a general term for all power transmission devices from an engine to driving wheels. The whole vehicle transmission system can ensure that the vehicle has necessary traction force and speed under various driving conditions and ensure the function of coordinated change of the traction force and the speed, so that the vehicle has dynamic property and fuel economy, and simultaneously ensures that the vehicle can back up, and the left driving wheel and the right driving wheel can meet the requirements of a differential mechanism, so that power transmission can be smoothly combined or thoroughly and quickly separated according to requirements.
However, in the current vehicle transmission system, when the system is operated, the engine consumes fuel to generate kinetic energy, and after the kinetic energy is transmitted through the flywheel, the clutch, the gearbox, the transmission shaft and the rear axle, the forward driving force is generated through the friction between the wheels and the ground, so that the whole vehicle is driven to run. When a driver controls the vehicle to decelerate, the clutch pedal needs to be stepped on, so that the flywheel is separated from the gearbox, a power source is cut off, the brake pedal is simultaneously stepped on, a sensor on the brake pedal sends a braking signal to the brake, and the brake converts kinetic energy into heat energy through friction with a wheel brake pad, so that the vehicle decelerates or stops.
When the whole vehicle is braked, the kinetic energy of the whole vehicle can be directly converted into heat energy, so that the abrasion of brake pads of wheels of the whole vehicle is aggravated, the replacement frequency of the brake pads is increased, and the maintenance cost of the whole vehicle is increased.
Disclosure of Invention
The application provides a recovery system of vehicle hydraulic pressure energy storage for reduce the wearing and tearing to the brake block, thereby reduce the maintenance cost of whole car.
The application provides a recovery system for vehicle hydraulic pressure energy storage of whole car transmission system, whole car transmission system contains engine, flywheel, clutch, gearbox, transmission shaft, rear axle, wheel and stopper, the recovery system of vehicle hydraulic pressure energy storage includes:
the hydraulic control system comprises a hydraulic pump clutch, a hydraulic pump, a first control valve, a first oil tank, a second oil tank and a hydraulic motor;
the hydraulic pump clutch is connected with the hydraulic pump;
the hydraulic pump is provided with an oil inlet and an oil outlet, the oil inlet is connected with the first oil tank, the oil outlet is connected with the second oil tank, and the hydraulic pump is used for discharging oil sucked from the first oil tank to the second oil tank;
the first control valve is arranged between the hydraulic pump and the second oil tank and is used for controlling the flow rate of discharged oil;
the second oil tank is connected with the hydraulic motor;
the flywheel is respectively connected with the hydraulic pump clutch and the hydraulic motor;
when an electronic control unit of the engine receives a braking signal, the second oil tank is used for storing recovered oil of the engine, and the hydraulic motor is used for converting potential energy of pressure oil provided by the hydraulic pump into mechanical energy for driving the flywheel.
Optionally, the recycling system further includes: a second control valve;
the second control valve is arranged between the hydraulic motor and the second oil tank and used for controlling the flow rate of hydraulic oil provided by the second oil tank.
Optionally, the recycling system further includes: an oil pressure sensor;
the oil pressure sensor is arranged in the second oil tank and used for detecting the oil pressure of hydraulic oil in the second oil tank.
Optionally, a potential energy sensor is arranged in the hydraulic motor, and the potential energy sensor is used for detecting energy stored in the hydraulic motor.
Optionally, the connection between the hydraulic motor and the flywheel is a transmission connection.
Optionally, the connection between the hydraulic pump clutch and the flywheel is a hard connection.
Optionally, the connection between the hydraulic pump clutch and the hydraulic pump is a hard connection.
Alternatively, the operating state of the first control valve is controlled by an electronic control unit of the engine.
Alternatively, the operating state of the second control valve is controlled by an electronic control unit of the engine.
Optionally, the hydraulic pump is a PA6D series pneumatic hydraulic pump.
According to the technical scheme, the embodiment of the application has the following advantages:
the application provides a recovery system of vehicle hydraulic pressure energy storage with hydraulic pump clutch, hydraulic pump, first control valve, first oil tank, second oil tank and hydraulic motor. The hydraulic pump in the system is connected with the hydraulic pump clutch, the oil inlet is connected with the first oil tank, the oil outlet is connected with the second oil tank, the flywheel is connected with the hydraulic pump clutch and the hydraulic motor, the hydraulic motor is connected with the second oil tank, a closed-loop control loop is formed, when an electronic control unit of the engine receives a braking signal, residual oil of the engine can be recovered into the second oil tank for storage, the oil pressure sensor transmits a pressure signal to the electronic control unit in real time to carry out closed-loop control on energy recovery of the whole vehicle, the electronic control unit controls the gearbox and the clutch to drive the rear axle to brake the wheels, the service frequency of the brake is reduced, namely, the mode of a brake pad is reduced, and the maintenance cost of the whole vehicle is reduced.
Drawings
FIG. 1 is a schematic overall structure diagram of a recovery system of vehicle hydraulic energy storage in an embodiment of the application;
FIG. 2 is a schematic diagram of an energy storage hydraulic flow direction of a vehicle hydraulic energy storage recovery system in an embodiment of the application;
FIG. 3 is a schematic illustration of the hydraulic flow of released energy from a vehicle hydraulic stored energy recovery system in an embodiment of the present application;
FIG. 4 is a schematic diagram of an energy storage transmission connection direction of a vehicle transmission system in the embodiment of the present application.
Detailed Description
The transmission system of the whole vehicle comprises a device for power connection, a speed change mechanism for changing the force, a mechanism for overcoming the difference of rotating speeds between wheels and a transmission shaft for connecting each mechanism, and is used for transmitting the power of an engine to the wheels so as to ensure the coordinated change of traction force and speed.
In the existing whole vehicle transmission system, when the system is in operation, an engine consumes fuel to generate kinetic energy, and after the kinetic energy is transmitted through a flywheel, a clutch, a gearbox, a transmission shaft and a rear axle, forward driving force is generated through friction between wheels and the ground, so that the whole vehicle is driven to run. When a driver controls the vehicle to decelerate, the clutch pedal needs to be stepped on, so that the flywheel is separated from the gearbox, a power source is cut off, meanwhile, the brake pedal is stepped on, a sensor on the brake pedal sends a braking signal to the brake, the brake converts kinetic energy into heat energy through friction with a wheel brake pad, and accordingly the vehicle decelerates or stops, and the process is called deceleration braking. However, in the process of deceleration braking, the kinetic energy of the whole vehicle is directly converted into heat energy, so that the abrasion of the brake pads of the wheels of the whole vehicle is aggravated, the replacement frequency of the brake pads is increased, and the maintenance cost of the whole vehicle is also increased accordingly.
Based on this, the application provides a recovery system of vehicle hydraulic pressure energy storage, forms the closed loop control circuit of whole car energy recuperation through the connection of each part in the system for the electronic control unit of engine can control gearbox and clutch in the whole car transmission system, drives rear axle brake wheel, makes the frequency of use of stopper reduced, has reduced the mode to the brake block promptly, thereby has reduced the maintenance cost of whole car.
The technical solutions in the present application will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, the present application provides a recovery system of vehicle hydraulic energy storage, which is applied to a complete vehicle transmission system, wherein the complete vehicle transmission system includes an engine, a flywheel, a clutch, a gearbox, a transmission shaft, a rear axle, wheels and a brake, and the recovery system is characterized by comprising: the hydraulic control system comprises a hydraulic pump clutch 1, a hydraulic pump 2, a first control valve 3, a first oil tank 4, a second oil tank 5 and a hydraulic motor 6; the hydraulic pump clutch 1 is connected with the hydraulic pump 2; the hydraulic pump 2 is provided with an oil inlet and an oil outlet, the oil inlet is connected with the first oil tank 4, the oil outlet is connected with the second oil tank 5, and the hydraulic pump 2 is used for discharging oil sucked from the first oil tank 4 to the second oil tank 5; the first control valve 3 is arranged between the hydraulic pump 2 and the second oil tank 5, and the first control valve 3 is used for controlling the flow rate of the discharged oil; the second oil tank 5 is connected with a hydraulic motor 6; the flywheel is respectively connected with the hydraulic pump clutch 1 and the hydraulic motor 6; when the electronic control unit of the engine receives a braking signal, the second oil tank 5 is used for storing the recovered oil of the engine, and the hydraulic motor 6 is used for converting the potential energy of the pressurized oil provided by the hydraulic pump 2 into mechanical energy for driving the flywheel.
Further, in order to control the flow rate of the hydraulic oil supplied from the second oil tank 5, a second control valve 7 needs to be provided between the hydraulic motor 6 and the second oil tank 5.
The recovery system of the vehicle hydraulic energy storage is actually performing closed-loop control on the whole vehicle energy recovery according to the oil pressure state of the second oil tank 5 and the energy state of the hydraulic motor 6, and therefore, the oil pressure parameter in the second oil tank 5 and the potential energy parameter of the hydraulic motor 6 need to be obtained in real time, and then, the recovery system is further provided with an oil pressure sensor 8 and a potential energy sensor 9, wherein the oil pressure sensor 8 is arranged on the second oil tank 5 and is used for detecting the oil pressure of the hydraulic oil in the second oil tank 5, and the potential energy sensor 9 is arranged in the hydraulic motor 6 and is used for detecting the energy stored in the hydraulic motor 6.
Referring to fig. 2 to 4, as for the connection mode of each component, it should be noted that the connection mode of the hydraulic pump clutch 1 and the flywheel is hard connection, and the connection mode of the hydraulic pump clutch 1 and the hydraulic pump 2 is also hard connection. The transmission connection sequence of the whole vehicle transmission system is as follows: the device comprises an engine, a flywheel, a clutch, a gearbox, a transmission shaft, a rear axle and wheels; the sequence of the energy storage transmission connection is as follows: engine to flywheel, wheels, rear axle, drive shaft, gearbox, clutch and flywheel. Meanwhile, the working states of the first control valve 3 and the second control valve 7 in the recovery system of the vehicle hydraulic energy storage are controlled by an engine electronic control unit of the whole vehicle transmission system.
In particular, the hydraulic pump 2 may be a pneumatic hydraulic pump of the PA6D series.
In the application, after the whole vehicle transmission system is connected with the recovery system of the vehicle hydraulic energy storage, the hydraulic energy storage recovery and release can be realized.
The specific hydraulic energy storage recovery process is as follows: collecting and judging energy storage recovery signals: when the whole vehicle is braked, the electronic control unit of the engine receives a vehicle speed signal, an opening signal of an accelerator pedal, a brake pedal and the like from the engine, a separation signal of a clutch, a gear signal of a gearbox, a pressure signal of a pressure sensor 8 on the second oil tank 5 and a brake signal of a brake, and after the whole vehicle is braked according to related signals, the whole vehicle is subjected to hydraulic energy storage recovery. It should be noted that, after the above-mentioned process is repeatedly adjusted to the maximum, if the braking effect still does not meet the requirement, the brake of the entire vehicle will participate in the braking, so as to meet the braking requirement of the entire vehicle and ensure the driving safety.
The whole vehicle energy recovery process: when an electronic control unit of the engine determines that the whole vehicle is in a whole vehicle braking process, hydraulic energy storage recovery is required, the electronic control unit of the engine controls the combination of the hydraulic pump clutch 1 and the full-closing of the second control valve 7, and controls the first control valve 3 to output hydraulic oil according to the initial hydraulic flow and the initial oil pressure. The energy of the whole vehicle passes through the flywheel, the rear axle, the transmission shaft, the gearbox, the clutch, the flywheel and the hydraulic pump clutch 1 in sequence and is finally transmitted to the hydraulic pump 2. The hydraulic pump 2 draws hydraulic oil from the first oil tank 4 to the first control valve 3 to control the output flow rate of the hydraulic oil, eventually causing a fixed amount of hydraulic oil to be stored in the second oil tank 5. The oil pressure sensor 8 on the second oil tank 5 transmits the pressure signal to the electronic control unit of the engine in real time to carry out closed-loop control of the energy recovery of the whole vehicle, and meanwhile, in order to ensure that the internal pressure of the second oil tank 5 can be stable, the pressure relief valve in the second oil tank 5 can carry out pressure relief, and hydraulic oil flows back to the first oil tank 4.
The process of engine energy recovery: when the electronic control unit of the engine determines that the whole vehicle is in the whole vehicle braking process, hydraulic energy storage recovery is required, the electronic control unit of the engine can control the combination of the hydraulic pump clutch 1 and the full-closing of the second control valve 7, and controls the first control valve 3 to output hydraulic oil according to the initial hydraulic flow and the initial oil pressure. The energy of the engine is finally transmitted to the hydraulic pump 2 through the flywheel and the hydraulic pump clutch 1. The hydraulic pump 2 draws hydraulic oil from the first oil tank 4 to the first control valve 3 to control the output flow rate of the hydraulic oil, eventually causing a fixed amount of hydraulic oil to be stored in the second oil tank 5. The oil pressure sensor 8 on the second oil tank 5 transmits the pressure signal to the electronic control unit of the engine in real time to carry out closed-loop control of the energy recovery of the whole vehicle, and meanwhile, in order to ensure that the internal pressure of the second oil tank 5 can be stable, the pressure relief valve in the second oil tank 5 can carry out pressure relief, and hydraulic oil flows back to the first oil tank 4.
The specific hydraulic energy storage and release process is as follows: collecting and judging an energy storage release signal: when the whole vehicle is braked, the electronic control unit of the engine receives a vehicle speed signal, an opening degree signal of an accelerator pedal, a brake pedal and the like, a combination signal of a clutch, a gear signal of a gearbox, a pressure signal of a pressure sensor 8 on the second oil tank 5 and a release signal of a brake from the engine, and after the whole vehicle is accelerated according to related signals, the whole vehicle is subjected to hydraulic energy storage release, and a hydraulic energy storage release process can be seen specifically.
Hydraulic energy storage and release process: when the electronic control unit of the engine determines that the whole vehicle is in the whole vehicle acceleration process, hydraulic energy storage release is required, the electronic control unit of the engine can control the hydraulic pump clutch 1 to be separated, the first control valve 3 to be fully closed, and the pressure and the flow of hydraulic oil flowing out of the second oil tank 5 from the second control valve 7 are controlled according to the initial hydraulic flow and the initial oil pressure. The hydraulic oil generates power through the hydraulic motor 6, is output to the flywheel, and finally reaches the wheel drive whole vehicle to travel through the clutch, the gearbox, the transmission shaft and the rear axle in sequence. Wherein the oil pressure sensor 8 on the second oil tank 5 feeds back a pressure signal to an electronic control unit of the engine in real time so as to adjust the relevant control according to the pressure state.
When the driving force of the whole vehicle does not meet the requirement, the electronic control unit of the engine can control the second control valve 7 to adjust the pressure and the flow of the hydraulic oil flowing out of the second oil tank 5, so that the driving force of the whole vehicle is improved, and the closed-loop control of hydraulic energy storage release is performed. Meanwhile, in order to ensure the safety of the hydraulic motor 6, a pressure relief valve arranged in the hydraulic motor 6 can relieve the pressure and return hydraulic oil to the first oil tank 4. When the driving force does not meet the requirement after the process is repeatedly adjusted to the maximum, the engine participates in the driving process so as to meet the acceleration requirement of the whole vehicle and ensure the dynamic requirement of the whole vehicle.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for explaining relative positional relationships between the respective members or components, and do not particularly limit specific mounting orientations of the respective members or components.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, the structures, proportions, sizes, and other dimensions shown in the drawings and described in the specification are intended to be illustrative only and are not intended to be limiting, since the same are not intended to be exhaustive or to limit the scope of the invention, which is defined by the appended claims, and therefore all changes in structure, proportion, and size which are within the range of the disclosed technology are not necessarily to scale.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
Claims (10)
1. The utility model provides a recovery system of vehicle hydraulic pressure energy storage, is applied to whole car transmission system, whole car transmission system contains engine, flywheel, clutch, gearbox, transmission shaft, rear axle, wheel and stopper, its characterized in that includes:
the hydraulic control system comprises a hydraulic pump clutch, a hydraulic pump, a first control valve, a first oil tank, a second oil tank and a hydraulic motor;
the hydraulic pump clutch is connected with the hydraulic pump;
the hydraulic pump is provided with an oil inlet and an oil outlet, the oil inlet is connected with the first oil tank, the oil outlet is connected with the second oil tank, and the hydraulic pump is used for discharging oil sucked from the first oil tank to the second oil tank;
the first control valve is arranged between the hydraulic pump and the second oil tank and is used for controlling the flow rate of discharged oil;
the second oil tank is connected with the hydraulic motor;
the flywheel is respectively connected with the hydraulic pump clutch and the hydraulic motor;
when an electronic control unit of the engine receives a braking signal, the second oil tank is used for storing recovered oil of the engine, and the hydraulic motor is used for converting potential energy of pressure oil provided by the hydraulic pump into mechanical energy for driving the flywheel.
2. The vehicle hydraulic stored energy recovery system of claim 1, further comprising: a second control valve;
the second control valve is arranged between the hydraulic motor and the second oil tank and used for controlling the flow rate of hydraulic oil provided by the second oil tank.
3. The vehicle hydraulic energy storage recovery system of claim 2, further comprising: an oil pressure sensor;
the oil pressure sensor is arranged in the second oil tank and used for detecting the oil pressure of hydraulic oil in the second oil tank.
4. The vehicle hydraulic stored energy recovery system of claim 3, wherein a potential energy sensor is disposed within the hydraulic motor for detecting stored energy within the hydraulic motor.
5. The vehicle hydraulic stored energy recovery system of claim 4, wherein the connection of the hydraulic motor to the flywheel is a drive connection.
6. The vehicle hydraulic stored energy recovery system of claim 1, wherein the connection of the hydraulic pump clutch to the flywheel is a hard connection.
7. The vehicle hydraulic stored energy recovery system of claim 1, wherein the connection of the hydraulic pump clutch to the hydraulic pump is a hard connection.
8. The vehicle hydraulic energy storage recovery system of claim 1, wherein the operating state of the first control valve is controlled by an electronic control unit of the engine.
9. A hydraulic stored energy recovery system for a vehicle according to claim 2 wherein the operating state of the second control valve is controlled by an electronic control unit of the engine.
10. The recovery system of vehicle hydraulic stored energy according to any one of claims 1 to 9, characterized in that the hydraulic pump is a PA6D series pneumatic hydraulic pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111003148.7A CN113752824A (en) | 2021-08-30 | 2021-08-30 | Recovery system of vehicle hydraulic pressure energy storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111003148.7A CN113752824A (en) | 2021-08-30 | 2021-08-30 | Recovery system of vehicle hydraulic pressure energy storage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113752824A true CN113752824A (en) | 2021-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111003148.7A Pending CN113752824A (en) | 2021-08-30 | 2021-08-30 | Recovery system of vehicle hydraulic pressure energy storage |
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| Country | Link |
|---|---|
| CN (1) | CN113752824A (en) |
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2021
- 2021-08-30 CN CN202111003148.7A patent/CN113752824A/en active Pending
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