Steering pump with electromagnetic valve for controlling flow, and power steering pump flow control device and method for automobile

Abstract

The invention relates to the technical field of automobile power steering parts and discloses a steering pump with an electromagnetic valve for controlling flow, a power steering pump flow control device and a power steering pump flow control method for an automobile. In the invention, an electromagnetic technology is combined with a hydraulic technology, so a novel power steering pump is formed; an automobile speed sensor is used for transmitting a signal to the electromagnetic valve; output of the flow is controlled by a switch of the electromagnetic valve, so the flow of oil output by the steering pump can be completely controlled according to an automobile speed; therefore, a driver has a good feeling in automobile steering and the driving is safer. Compared with the prior art, the steering pump is simple in production process and easy to implement; the flow can be changed obviously and is easy to control; flow change parameters can be adjusted by an electric control unit (ECU) of the automobile; and the invention is in accordance with the tendency of development of the automobile towards an electric control direction.

Description

technical field [0001] The invention relates to automobile power steering components, in particular to a steering pump with flow controlled by an electromagnetic valve. Background technique [0002] Many cars are equipped with a power steering pump, which can provide hydraulic power to the steering gear, making the driver's steering operation more labor-saving, easy to control, and improving driving safety. [0003] At present, steering pumps are widely used in various passenger cars. In the prior art, there are two ways to control the flow of steering pumps. One is the constant flow oil pump, that is, the flow of the oil pump increases slightly with the increase of engine speed or Keeping the same, this is achieved by turning to the relief valve in the pump, the pressure in the pump reaches the set value, the relief valve opens, and the high-pressure oil flows back to the oil inlet chamber, so that the output flow is constant; the other is variable flow Type oil pump, that...

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Problems solved by technology

For example, the application number is 2010105684729, and the Chinese invention patent titled "Steering Pump Flow Control Valve". It will feel fluttering, but the speed of the car is not directly related to the speed of the engine. When the speed of the car is high, the speed of the engine may not be high, so this kind of steering pump controlled by the variable cross-section valve stem cannot completely solve the problem of steering flutter when driving at high speed. The problem

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