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What is the reason for the diesel fuel injection vehicle not shutting off when the key is turned off?

1 Answers

DeCassandra

07/29/25 3:53pm

This is an issue with the solenoid valve. Diesel engines should have a fuel solenoid valve. When the key is turned off, the solenoid valve should cut off the diesel fuel supply, causing the vehicle to shut off. If the vehicle does not shut off when the key is turned off, it indicates that the solenoid valve is not sealing the fuel line, allowing the engine to continue running. Additional information: 1. Principle: A solenoid valve is an industrial device controlled by electromagnetism, used as a basic automation component to control fluids, belonging to actuators, and not limited to hydraulic or pneumatic systems. It is used in industrial control systems to adjust the direction, flow, speed, and other parameters of the medium. Solenoid valves can work with different circuits to achieve the desired control, ensuring both precision and flexibility. 2. Types: There are many types of solenoid valves, each serving different functions in control systems. The most commonly used include check valves, safety valves, directional control valves, and speed regulating valves.

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