Patent ID: 7958720
Filing Date: 2011-06-14
Classification: F02D,Y02T

Abstract:
1. A combustion control apparatus for an internal combustion engine, comprising: a fuel injector configured to inject fuel into a combustion chamber of the internal combustion engine at a fuel injection timing; a spark plug configured to produce a spark in the combustion chamber at an ignition timing; and a control unit connected to the fuel injector and the spark plug and configured to perform the following in an extremely retarded combustion mode while the internal combustion engine is in a predetermined operating state: setting the ignition timing to be after compression top dead center; and setting the fuel injection timing to be before the ignition timing and after compression top dead center, the control unit being configured to inhibit the extremely retarded combustion mode from an engine start until an exhaust purifier of the internal combustion engine passes a predetermined cold state.