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What is the working principle of the fuel pump control circuit?

1 Answers

McJulianna

07/29/25 11:17am

The working principle of the fuel pump control circuit is: 1. ECU-controlled fuel pump circuit; 2. Switch-controlled fuel pump circuit; 3. Speed-controlled fuel pump circuit. The fuel pump is a professional term in the automotive parts industry and is one of the basic components of the fuel injection system in electronic fuel injection vehicles, located inside the vehicle's fuel tank. The function of the fuel pump is to draw fuel from the fuel tank, pressurize it, and deliver it to the fuel supply line, working in conjunction with the fuel pressure regulator to establish a certain fuel pressure. The fuel pump consists of an electric motor, a pressure limiter, and a check valve, with the electric motor actually operating within the fuel inside the pump housing.

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