Detailed Info of Electric Fuel Pump 15100-77300 for Suzuki Carry
The function of the fuel pump is to transfer the fuel stored in the fuel tank to the fuel line of the fuel injector. The fuel pump of the early engine fuel system is mostly mechanical, and now the electric fuel pump has replaced it. In addition, considering heat dissipation, sound insulation and air resistance, some of the electric fuel pumps originally installed outside the fuel tank are also built inside the fuel tank. The fuel pump is installed in the fuel tank and combined with the fuel oil gauge measuring device as a whole.
Fuel gauge paddle-type metering part on fuel pump
The working principle of the electric fuel pump is the same as that of the electric pump, which uses the motor to drive the corresponding oil pump device to deliver fuel to the fuel system continuously. It is worth noting that the fuel system must maintain a certain pressure, only in this way can ensure that the atomization effect of the fuel injected by the fuel injector is better and easier to burn.
But when the engine shuts down, the pressure of the fuel system will lose, once there is no residual pressure, it is easy to cause gas resistance in the pipeline at high temperature. In this case, when the engine restarts, because the fuel system is mixed with air, it is difficult to start the engine without sufficient fuel, in view of this, a one-way valve is set in the fuel pump. In this way, when the fuel pump stops running, the one-way valve closes to maintain the residual pressure in the fuel pipeline, which facilitates the engine restart. In addition, I do not know if you have noticed that after your vehicle has been parked for a long time, you will hear the "buzzing" sound in the rear of the vehicle when you turn on the ignition switch but haven’t started the engine. This is not a fault, but to let the electric fuel pump run 2 to 3 seconds to obtain oil pressure so that the fuel system has enough pressure to start the engine. A safety valve is designed to prevent excessive pressure on the oil outlet side of the electric fuel pump. Once the fuel pressure of the fuel pump is too high, the safety valve will open and the high-pressure fuel will flow back to the fuel tank.
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