Fuel Injectors

A notch in the tip of the nozzle of the swirl-type injector produces both a lead spray with high penetration force and a main spray with superior atomization. This is original “swirl type” pattern for the shaping and atomization of the fuel spray, we have made it possible to shape the injection spray to match the engine and the combustion system with technology for designing the shape of the nozzle tip. The spray shapes include the symmetrical cone, the bent cone for conforming to the engine layout, and the latest horseshoe shape spray for the lead spray injection method which allows good ignitability to be maintained under various driving conditions by optimizing the specifications of the lead spray part of the horseshoe spray for the shape of the combustion chamber.It comes with two improvements: first, a short spray penetration to avoid fuel adhesion to the intake manifold, and second, a fine atomization spray to generate a good mixture formation of fuel and air.

Hitachi Automotive Systems Americas, Inc makes several varieties of MPI (multipoint injection) and SPI (single point injection) gasoline injectors. The effect of fuel injection atomization on engine performance has been known to improve fuel economy and to reduce emissions. The injector shown above is one of our side-feed injectors. This injector is used to directly inject gasoline into the engine combustion cylinder. Currently, most systems use an MPI (multipoint injector) scheme which injects fuel to the intake manifold part ahead of the intake valve and combustion cylinder.Gasoline Direct Injection is an important technology that enables automakers to comply with fuel economy and emissions requirements while maintaining performance that drivers expect.