In fact, diesel exhaust in the CO and HC far less than the gasoline engine, NOX emissions and gasoline engine similar, but more exhaust particles, and the mechanism of the combustion engine. Diesel is a non-homogeneous combustion, flammable mixture formed a very short time, and combustible gas mixture formation and combustion process intertwined. Diesel fuel injection through the analysis of the law are: injected into the atomization of fuel quality, the flow of gas cylinder in the shape of the combustion chamber and so directly affect the combustion process and the progress of the formation of harmful emissions. Improve the atomization of diesel fuel injection pressure and effect, the use of pre-spray, spray, can be sub-effective to improve emissions.

After years of research and new technology application, the status of diesel has been very different from the past. Modern diesel engines generally use EFI, high-pressure common-rail, turbocharged in the cold, such as technology, in weight, noise, smoke, and so has made a major breakthrough, reaching the level of gasoline engines. As the world increasingly stringent emission control standards (such as the European ��, �� standards) the promulgation and implementation of both the gasoline engine or diesel engines are faced with severe challenges, one solution is using electronic control fuel injection technology. Now, electronic engine control technology developed in the application rate has reached more than 60 percent.