题目内容

The fuel supply line is usde to carry fuel from the tank to the filter and then to the fuel pump.

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EFI systems use injectors to spray the fuel.

Depending on engine operating conditions, injection quantity will vary.

The amount of fuel delivered by the injectors and their timing are controlled by the electronic control unit(ECU).

Air enters the engine through the air induction system where it is measured by the air flow meter.