Patent ID: 6067954
Filing Date: 2000-05-30
Classification: F02B,F02D,F02M,Y02T

Abstract:
A direct injection engine comprises:an injector disposed in an upper portion of a combustion chamber defined above a piston disposed in a cylinder of the engine with a fuel injecting direction of the injector being provided so that a fuel being injected toward a top portion of the piston;an ignition plug disposed at an upper portion of the combustion chamber, an engine operating condition detector for detecting an engine operating condition, the fuel being injected in a compression stroke from the injector when it is detected by the engine operating condition detector that the engine is in a low engine load and speed zone so as to stratify an injected air fuel mixture around the ignition plug to accomplish a stratified combustion; andfuel control means for controlling a fuel injection so as to inject the fuel plural times into the combustion chamber in a compression stroke when at least one of an engine load and an engine speed is relatively high in an engine operating zone for accomplishing the stratified combustion.