Extended data:
Fuel injection pump is an important part of automobile diesel engine. The fuel injection pump assembly is usually a whole composed of fuel injection pump, governor and other components.
The fuel injection pump is mainly composed of four parts: oil pumping mechanism, oil supply regulating mechanism, driving mechanism and fuel injection pump body. Wherein, the pumping mechanism comprises a plunger coupler and an oil outlet valve coupler; The oil supply regulating mechanism refers to a rack-type oil supply regulating mechanism or a fork-type oil supply regulating mechanism.
The driving mechanism comprises a camshaft and a tappet assembly; The pump body of the fuel injection pump is the installation foundation of the above three parts, which requires sufficient strength, rigidity and tightness to facilitate disassembly, adjustment and maintenance.
Main features of solenoid valve:
1, external leakage plugging, internal leakage easy to control, safe to use.
Internal and external leakage is a factor endangering safety. Other automatic control valves usually extend the valve stem, and electric, pneumatic and hydraulic actuators control the rotation or movement of the valve core. This will solve the external leakage problem of long-term valve stem dynamic seal; Only the solenoid valve is completed by electromagnetic force acting on the iron core sealed in the magnetic isolation sleeve of the electric regulating valve, and there is no dynamic seal, so the external leakage is easily blocked.
It is difficult to control the torque of electric valve, which is easy to cause internal leakage and even the head of valve stem is broken. The structure of the solenoid valve can easily control the internal leakage until it is reduced to zero. Therefore, the use of solenoid valves is particularly safe, especially suitable for corrosive, toxic or high and low temperature media.
2, the system is simple, computers can be easily connected, and the price is low.
The solenoid valve itself is simple in structure and low in price, which is easier to install and maintain than other actuators such as regulating valves. What is more noteworthy is that the automatic control system is much simpler and the price is much lower. Because the solenoid valve is controlled by the switch signal, it is very convenient to connect with the industrial computer. In today's era when computers are popular and prices are falling sharply, the advantages of solenoid valves are more obvious.
3, action express, low power, light shape.
The response time of the solenoid valve can be as short as several milliseconds, and even the pilot solenoid valve can be controlled within tens of milliseconds. Because of its own circuit, it is more sensitive than other automatic control valves.
Properly designed solenoid valve coil has low power consumption and belongs to energy-saving products. It can also automatically maintain the valve position only by triggering action, and it does not consume electricity at ordinary times. The solenoid valve is small, space-saving, light and beautiful.
References:
Baidu encyclopedia-fuel injection pump
References:
Baidu encyclopedia-electromagnetism valve