What is the function of an automotive solenoid valve?

1 Answers
McMalachi
07/29/25 10:29pm
Function of automotive solenoid valves: Solenoid valves utilize electrical current passing through a coil to generate electromagnetic force that attracts the valve core. They are categorized into normally open and normally closed types, commonly used to cut off the flow of substances such as oil, water, or gas. Working in conjunction with pressure and temperature sensors and other electrical equipment, they enable automatic control. Their characteristic feature is the ability to operate normally under vacuum, negative pressure, or zero-pressure conditions, though their nominal diameter generally does not exceed 25mm. Principle of automotive solenoid valves: When energized, the electromagnetic coil generates force to lift the closing element from the valve seat, opening the valve; when de-energized, the electromagnetic force disappears, and a spring presses the closing element against the valve seat, closing the valve. Automotive solenoid valves also include distributed direct-acting, direct-acting, and pilot-operated types.
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