The invention discloses a
gasoline direct injection
fuel injection pump. The
gasoline direct injection
fuel injection pump is directly installed on an engine
cylinder head and comprises a pump body, a pressure stabilizing component, a fuel
inlet valve component, an electromagnetic driving component, a
plunger valve component, a fuel outlet valve component, a fuel drain valve component and a fuel outlet connecting sleeve, wherein the pressure stabilizing component is installed on the pump body, and the fuel outlet connecting sleeve is hollow inside and is connected with a high-pressure
fuel supply rail. According to the
gasoline direct injection
fuel injection pump, an air inlet
camshaft is used for driving a
plunger in the
plunger valve component, thus, compared with outside jet engines, the pump has the advantages that the
friction force and the chain force are reduced, an engine can operate quietly, and fuel is saved. The fuel
injection pump provides the fuel which is stored in the high-pressure rail, the fuel is transferred to a fuel
injector through the high-pressure rail, and fuel injection quantity parameters of the fuel
injector are used for accurately controlling the injection quantity of the fuel of the fuel
injection pump through sending of electric signals by an
electronic control unit (ECU). The fuel
injector controls the injection quantity of the fuel accurately through electrons according to the air intake volume, the fuel and the air are fully atomized and mixed, a
combustion chamber is uniformly filled with gas mixtures which conform to a theoretical air-fuel ratio, and every drop of fuel is used fully.