Valve block structure and vehicle with same

Abstract

The invention provides a valve block structure and a vehicle with the same. The valve block structure comprises a valve body, a high-pressure oil cavity, a low-pressure oil cavity and an oil duct arearranged in the valve body, and the high-pressure oil cavity and the low-pressure oil cavity are communicated through the oil duct; a first valve element, a first unsymmetrical pressure part, a secondvalve element, a second unsymmetrical pressure part and a pressure switch terminal are arranged at the two ends of the high-pressure oil cavity respectively. When the pressure of the high-pressure oil cavity exceeds the preset pressure, the first valve element moves towards the first installation cavity so as to communicate the high-pressure oil cavity, the oil channel and the low-pressure oil cavity, the second valve element moves towards the second installation cavity so as to make contact with the pressure switch terminal, and the electronic control unit receives signals and adjusts the engine power. The valve block structure is arranged on the hydraulic system, the system pressure is effectively limited, the failure rate of an oil pump and a steering gear is reduced, the service lifeof the system is prolonged, the pressure switch terminal is arranged on the valve block, signals are provided for the electronic control unit, the combustible risk is reduced, and the use and maintenance convenience and economy of a user are improved.

Description

Technical field [0001] The present invention relates to the technical field of automobile manufacturing, and more specifically, to a valve block structure and a vehicle having the valve block structure. Background technique [0002] For automobile hydraulic power steering system, when the steering wheel is subjected to greater resistance, the hydraulic system pressure will rise rapidly. The conventional method is to install a pressure limiting valve at the oil pump end or the steering gear. When the pressure exceeds the system design pressure, Relief of pressure in the oil pump will cause the system oil temperature to rise rapidly. The high temperature will cause damage to the seals of the parts, or even fail, resulting in damage to the oil pump or steering gear; during the steering of the vehicle, part of the engine power will be consumed, resulting in engine speed Fluctuations, a pressure switch is set on the steering pump, and the signal is sent to the vehicle ECU (Electronic ...

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Problems solved by technology

[0002] For automotive hydraulic power steering systems, when the steering wheel is subject to greater resistance, the pressure of the hydraulic system will rise rapidly. The conventional method is to set a pressure limiting valve at the oil pump end or in the steering gear. When the pressure exceeds the system design pressure, in The pressure release in the oil pump will cause the temperature of the oil in the system to rise rapidly, and the high temperature will cause damage to the seals of the parts, or even fail, resulting in damage to the oil pump or steering gear; during the steering process of the vehicle, part of the engine power will be consumed, resulting in engine speed Fluctuation, a pressure switch is set on the steering pump, and the signal is sent to the vehicle ECU (electronic control unit, also known as "driving computer") during the steering process, which is convenient for adjusting the engine power, but once the pressure switch leaks, it is easy to cause a combustion accident. cause vehicle damage

[0003] The pressure relief valve and pressure switch of the existing steering system are installed on the steering oil pump. Since the oil pump is under overload conditions, the body temperature rises rapidly and can reach a maximum of 180°C. The seal of the pressure switch is prone to failure and leakage; the steering oil will Splashing into the engine room, once the oil splashes into the exhaust system, it will cause the vehicle to burn, and the consequences will be very serious

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