Electronically controlled gasoline injection system
The electronically controlled gasoline injection system, as the name suggests, is a system that controls the fuel injection timing, injection pulse width, and injection timing of the gasoline engine by an engine control unit ECU (Engine Control Unit). Due to the volatile nature of gasoline, it is convenient to form a homogeneous combustible mixture outside the cylinder. Therefore, the carburetor supply method installed on the intake manifold is adopted for a long time. This fuel supply system is replaced by an electronically controlled gasoline injection method because it cannot accurately control the air-fuel ratio of the mixer according to different working conditions. Gasoline injection mode can be divided into three types: inlet multi-point injection (MFI), intake manifold or central single point injection (SPI) and in-cylinder direct injection (GDI) according to the injector installation position and working principle.