An electro-hydraulic power steering system and its control method
A power steering, electro-hydraulic technology, applied in electric steering mechanism, fluid steering mechanism, etc., can solve the problems of reducing the service life of hydraulic power pump, improving the limit of driving experience, and increasing the fuel consumption of the whole vehicle, so as to simplify the structure and realize electric power. The effect of new energy and energy consumption reduction
Active Publication Date: 2022-06-07
天津德科智控股份有限公司
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Problems solved by technology
[0004] In this type of steering system, the electric power assist device and the torsion bar in the hydraulic circulating ball steering gear work in series, the structure is complex, and there are certain restrictions on improving the driving experience
At the same time, the hydraulic power pump in this type of system is still driven by the engine. When the vehicle is started, the hydraulic power pump is always in operation, which not only reduces the service life of the hydraulic power pump, but also increases the fuel consumption of the vehicle, resulting in energy consumption. waste
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[0046] The following is combined with the attached Figure 1-3And an embodiment, the present application will be further elaborated. It should be understood that the specific embodiments described herein are only used to interpret the present application and are not used to limit the present application.
[0047] Reference Figure 1 , the car is installed for driving the wheel steering gear, the steering gear is integrated with the hydraulic circulating ball steering 1, the input shaft on the hydraulic circulating ball steering gear 1 is used to connect the steering wheel, and the input shaft of the hydraulic circulating ball steering device 1 is provided with a sensor for collecting data, the collected data includes the steering wheel input speed, torque and direction of rotation, the sensor outputs the data with an electrical signal, and the above data is transmitted by electrical signal.
[0048] Embodiments of the present application disclose an electro-hydraulic power steering ...
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The present application relates to the field of automobile steering, and in particular to an electro-hydraulic power steering system and control method. The system includes: the first connection end of the first drive assembly is connected to the first oil circuit, Connected to the second oil passage, the first connection end of the second drive assembly is connected to the first oil passage, the second connection end of the second drive assembly is connected to the second oil passage, the oil port of the oil tank is sealed, and the first can The inlet port of the controllable valve is connected to the first oil circuit, the outlet port of the first controllable valve is connected to the fuel tank, the inlet port of the second controllable valve is connected to the second oil circuit, and the outlet port of the second controllable valve is connected to the fuel tank , the first oil circuit is connected with the first input end of the hydraulic circulating ball steering gear, and the second oil circuit is connected with the second input end of the hydraulic circulating ball steering gear; it also includes a controller, a first drive assembly and a second drive The components are all connected to the controller. The application has the effects of simplifying the structure and reducing energy consumption.
Description
Technical field [0001] The present application relates to the field of automotive steering, in particular to an electro-hydraulic power steering system and control method. Background [0002] At present, the traditional hydraulic steering system has been unable to meet the development trend of electric new energy and intelligent unmanned driving of heavy commercial vehicles, so the combination of electronic control technology and hydraulic power technology has become an inevitable trend. [0003] In order to adapt to the development trend, improve the comfort and safety of the driver, the relevant technology appeared in the electro-hydraulic steering system, is based on the traditional hydraulic circulation ball steering superimposed electric power device, its working principle is that when the driver steers, the electric power assist device provides the corresponding torque according to the torque deformation in its structure, and the torque applied by the steering wheel is supe...
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IPC IPC(8): B62D5/04B62D5/06
Inventor 洪学明秦昌良王伟强
Owner 天津德科智控股份有限公司