FUEL INJECTION SYSTEM FOR BIG ENGINE OF NATURAL GAS CAR

摘要

A fuel injection system for a big engine of a natural gas vehicle is provided to prevent an engine output from being lowered by installing a temperature sensor at a suction port. A fuel injection system for a big engine of a natural gas vehicle includes an intake manifold(110), a plurality of intake ports(170), a plurality of injectors(130), and guide pipes(140). The intake manifold is configured to reduce a cross-section of a suction passage to supply air introduced into a combustion chamber(160) uniformly. The intake ports are installed between the intake manifold and the combustion chamber to introduce the air. The injectors inject and control natural gas supplied from a natural gas supply rail. The guide pipes for guiding the natural gas into the intake port are installed to form different sizes of mixing spaces(S) where the natural gas and air are mixed.