CN113859354A - Steering power-assisted system of pure electric commercial vehicle - Google Patents
Steering power-assisted system of pure electric commercial vehicle Download PDFInfo
- Publication number
- CN113859354A CN113859354A CN202111333450.9A CN202111333450A CN113859354A CN 113859354 A CN113859354 A CN 113859354A CN 202111333450 A CN202111333450 A CN 202111333450A CN 113859354 A CN113859354 A CN 113859354A
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- CN
- China
- Prior art keywords
- steering
- oil
- driving motor
- pressure sensor
- energy accumulator
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- 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.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/061—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle provided with effort, steering lock, or end-of-stroke limiters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/062—Details, component parts
- B62D5/064—Pump driven independently from vehicle engine, e.g. electric driven pump
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
The invention relates to a steering power-assisted system of a pure electric commercial vehicle, which comprises a driving motor (1), a steering oil pump (2), a one-way control valve (4), an energy accumulator (7), a pressure sensor (8), a sensor signal wire (9), a driving motor controller (10), a steering machine (11) and a steering oil can (14); an output shaft of the driving motor is fixedly connected with an input shaft of a steering oil pump, an oil outlet of the steering oil pump is connected with an oil inlet of a one-way control valve, an oil outlet of the one-way control valve is connected with an oil inlet of an energy accumulator, an oil outlet of the energy accumulator is connected with an oil inlet of a steering machine, and an oil outlet of the steering machine is connected with a steering oil can; the steering oil can is connected with an oil return port of the steering oil pump, a pressure sensor (8) is fixed on the upper portion of the energy accumulator, and the pressure sensor (8) is connected with a driving motor controller (10). The invention realizes the intermittent working state of the power-assisted steering system, reduces the electric quantity consumption and improves the endurance mileage and the economy of the whole vehicle.
Description
Technical Field
The invention belongs to the technical field of pure electric vehicles, and particularly relates to a steering power-assisted system of a pure electric commercial vehicle.
Background
In order to be light and sensitive to control, a steering system of a commercial vehicle usually adopts a hydraulic power-assisted steering system, and the hydraulic power-assisted steering system has the advantages of no noise in operation, high sensitivity, small size and capability of absorbing impact from uneven road surfaces. A power oil pump in a steering system of a traditional fuel vehicle is driven by an engine to operate, a pure electric commercial vehicle adopts a special motor and is driven by the electric quantity of a power battery of the whole vehicle, and the whole vehicle does not stop working in the whole running process. The steering power motor does not work intermittently for a long time, consumes the electric quantity of a power battery, increases the battery load, passively sacrifices the endurance mileage of the whole vehicle, wastes energy, reduces the economical efficiency and influences the power consumption index.
Disclosure of Invention
The invention aims to provide a pure electric commercial vehicle steering power-assisted system, which realizes an intermittent working state of the steering power-assisted system, reduces the electric quantity consumption and improves the endurance mileage and the economy of a whole vehicle on the premise of not influencing the steering auxiliary function.
The technical scheme of the invention is that the steering system of the pure electric commercial vehicle comprises a driving motor 1, a steering oil pump 2, a one-way control valve 4, an energy accumulator 7, a pressure sensor 8, a sensor signal wire 9, a driving motor controller 10, a steering engine 11 and a steering oil can 14;
an output shaft of the driving motor 1 is fixedly connected with an input shaft of a steering oil pump 2, an oil outlet of the steering oil pump 2 is connected with an oil inlet of a one-way control valve 4, an oil outlet of the one-way control valve 4 is connected with an oil inlet of an energy accumulator 7, an oil outlet of the energy accumulator 7 is connected with an oil inlet of a steering machine 11, and an oil outlet of the steering machine 11 is connected with a steering oil can 14; the steering oil can 14 is connected with an oil return port of the steering oil pump 2, the upper part of the energy accumulator 7 is fixed with a pressure sensor 8, and the pressure sensor 8 is connected with the driving motor controller 10.
The pressure sensor 8 collects pressure signals in the energy storage device, namely when the working pressure value of the steering system is at an upper limit value and a lower limit value, the pressure sensor 6 sends a signal to the steering driving controller 9;
the driving motor controller 10 receives an instruction of the vehicle control unit and controls the working state of the driving motor 1 according to the instruction, and meanwhile, the driving motor controller 10 receives a pressure signal output by the pressure sensor 8 and controls the working state of the driving motor 1.
The steering system has the beneficial effects that the steering system is changed into an intermittent working state from the original long-time working, the auxiliary energy consumption is greatly reduced, and the endurance and the whole vehicle economy are improved; the invention has simple structure and flexible control, and realizes the pressurization and pressure maintaining performance of the closed oil way and the gas-oil combined energy accumulator.
Drawings
FIG. 1 is a schematic structural diagram of a steering power-assisted system of a pure electric commercial vehicle of the present invention;
fig. 2 is a working principle diagram of the present invention.
Detailed Description
The technical scheme of the invention is further described in detail in the following with the accompanying drawings of the specification.
As shown in fig. 1, the steering system of the pure electric commercial vehicle of the invention comprises a driving motor 1, a steering oil pump 2, an oil outlet pipe I3, a one-way control valve 4, an oil outlet pipe II 5, an oil outlet pipe III 6, an energy accumulator 7, a pressure sensor 8, a sensor signal line 9, a driving motor controller 10, a steering engine 11, an oil return pipe II 12, an oil return pipe I13 and a steering oil can 14.
The output shaft of the driving motor 1 is fixedly connected with the input shaft of the steering oil pump 2 through a tooth strengthening. An oil outlet of the steering oil pump 2 is connected with an oil inlet of the one-way control valve 4 through an oil outlet pipe I3, and an oil outlet of the one-way control valve 4 is connected with an oil inlet of the energy accumulator 7 through an oil outlet pipe II 5. An oil outlet of the energy accumulator 7 is connected with an oil inlet of the steering engine 11 through an oil outlet pipe III 6. An oil outlet of the steering engine 11 is connected with a steering oil can 14 through an oil return pipe I13; the steering oil pot 14 is connected with an oil return port of the steering oil pump 2 through the oil return pipe II 12. The whole oil circuit forms a closed loop, a pressure sensor 8 is fixed on the upper part of the energy accumulator 7, and the pressure sensor 8 is connected with a driving motor controller 10 through a sensor signal wire 9 to realize pressure signal acquisition and output.
The pressure sensor 8 collects pressure signals in the energy storage device, namely when the upper limit value and the lower limit value of the pressure in the steering system working pressure value energy storage device are in the upper limit value and the lower limit value, the pressure sensor 6 sends signals to the steering driving controller 9.
The drive motor controller 10 receives an instruction of a VCU (vehicle control unit) and controls the operating state of the drive motor 1 according to the instruction. Meanwhile, the driving motor controller 10 receives the pressure signal output by the pressure sensor 8 and controls the working state of the driving motor 1.
The working process of the invention is as follows: when an ignition switch is turned on by the whole vehicle, a driving motor controller 9 receives a VCU instruction, the system starts to work, a steering system driving motor 1 is started, a steering oil pump 2 is driven to pressurize the steering system through an oil outlet pipe I3, an energy accumulator is pressurized, an oil outlet pipeline between the energy accumulator and the steering oil pump is provided with a one-way control valve 4, when the pressure of the energy accumulator in the system reaches a preset pressure value, the preset pressure value is a pressure value of normal work of the steering system of the whole vehicle, a pressure sensor 6 sends a signal to the steering driving controller 9, and the steering driving controller 9 controls the driving motor 1 to stop working; the accumulator is in the pressurize state, and when turning to the work of machine 11, turn to fluid through the gyration of oil return 13 pipe flows to oilcan 14, system operating pressure reduces, and pressure sensor 8 signals gives drive controller 10, and after driving motor 1 carried out to start the pressurization to setting for the oil pressure, driving motor 1 stopped working, the steering system pressurize.
Claims (2)
1. The utility model provides a pure electric commercial car a steering system, characterized by: the transformation system comprises a driving motor (1), a steering oil pump (2), a one-way control valve (4), an energy accumulator (7), a pressure sensor (8), a sensor signal wire (9), a driving motor controller (10), a steering machine (11) and a steering oil can (14);
an output shaft of the driving motor (1) is fixedly connected with an input shaft of the steering oil pump (2), an oil outlet of the steering oil pump (2) is connected with an oil inlet of the one-way control valve (4), an oil outlet of the one-way control valve (4) is connected with an oil inlet of the energy accumulator (7), an oil outlet of the energy accumulator (7) is connected with an oil inlet of the steering machine (11), and an oil outlet of the steering machine (11) is connected with a steering oil can (14); the steering oil can (14) is connected with an oil return port of the steering oil pump (2), a pressure sensor (8) is fixed on the upper portion of the energy accumulator (7), and the pressure sensor (8) is connected with the driving motor controller (10).
2. The pure electric commercial vehicle steering system according to claim 1, characterized in that: the pressure sensor (8) collects pressure signals in the energy storage device, namely when the working pressure value of the steering system is at an upper limit value and a lower limit value, the pressure sensor (6) sends signals to the steering driving controller (9);
the driving motor controller (10) receives an instruction of the vehicle control unit and controls the working state of the driving motor (1) according to the instruction, and meanwhile, the driving motor controller (10) receives a pressure signal output by the pressure sensor (8) and controls the working state of the driving motor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111333450.9A CN113859354A (en) | 2021-11-11 | 2021-11-11 | Steering power-assisted system of pure electric commercial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111333450.9A CN113859354A (en) | 2021-11-11 | 2021-11-11 | Steering power-assisted system of pure electric commercial vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113859354A true CN113859354A (en) | 2021-12-31 |
Family
ID=78984620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111333450.9A Pending CN113859354A (en) | 2021-11-11 | 2021-11-11 | Steering power-assisted system of pure electric commercial vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113859354A (en) |
-
2021
- 2021-11-11 CN CN202111333450.9A patent/CN113859354A/en active Pending
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