[Auto Repair Knowledge]The working principle of the oil pressure regulator of the fuel supply system

The function of the oil pressure regulator is to adjust the injection pressure. The amount of fuel sprayed by the fuel injector is controlled by changing the duration of the fuel injection signal.due toIntake manifoldThe internal vacuum changes with the engine operating conditions. Even if the duration of the fuel injection signal and the fuel injection pressure remain unchanged, the fuel injection volume will change slightly when the operating conditions change. In order to obtain an accurate fuel injection volume, you must Keep the sum of oil pressure and intake manifold vacuum unchanged.

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