Patent ID: 7775037
Filing Date: 2010-08-17
Classification: F02D,Y02T

Abstract:
1. A method of controlling an exhaust gas temperature of an internal combustion engine having an exhaust gas purification device for purifying an exhaust gas, the method comprising: determining whether a purificatory performance of the exhaust gas purification device has declined; determining whether the internal combustion engine is operating in one of a first operating region and a second operating region that has higher engine loads than the first operating region; and executing an exhaust gas temperature control to raise an exhaust gas temperature upon determining that the purificatory performance of the exhaust gas purification device has declined, the executing of the exhaust gas temperature control including with the performing of the first fuel injection control including setting a retardation amount of the timing of the main fuel injection to a prescribed retardation amount and setting a fuel quantity of the post fuel injection based on the retardation amount of the main fuel injection.