Characteristics of Diesel Combustion and Emissions with a Multi-Injector System. 1st Repot. Effects of Retarded Fuel Injection by Side Injectors.

This paper shows the test results of a multi-injector diesel engine system which has two side injectors in addition to one center injector. This system provides greater flexibility in the fuel injection rate pattern compared to one with only a single injector. Using this system, injection timing and fuel quantity of each injector can be controlled individually, and injection pressure of center and side injectors can be set differently. The engine test results indicate that the small amount of retarded side injections improved fuel consumption and reduced particulate matter while maintaining low NOx emissions.