Patent ID: 8322325
Filing Date: 2012-12-04
Classification: F02D,F02M,Y02T

Abstract:
1. A method for concurrently injecting a liquid fuel and a gaseous fuel directly into a combustion chamber of an internal combustion engine, the method comprising: delivering the gaseous fuel to a fuel injector; delivering the liquid fuel to the fuel injector; injecting the gaseous and liquid fuels into the combustion chamber by actuating a valve member, whereupon liquid fuel is entrained into the gaseous fuel within a chamber of the injector, and a mixture of gaseous fuel and liquid is injected into the combustion chamber where the expanding gaseous fuel atomizes the liquid fuel; and controlling the mass ratio of the liquid and gaseous fuels during the injecting step so that a majority of the liquid fuel is injected closer to the start rather than the end of the injecting step.