Patent ID: 9470163
Filing Date: 2016-10-18
CPC Classification: F02D,F02P,Y02T

Claim Text:
1. A control apparatus for an internal combustion engine, which is capable of switching a combustion mode between a spark ignition combustion mode for combusting a mixture formed in a combustion chamber with spark ignition and a compression ignition combustion mode for combusting the mixture with compression ignition, the control apparatus comprising: an ignition timing control part for controlling a timing for igniting the mixture with a spark; a fuel injection amount control part for controlling a fuel injection amount supplied to the combustion chamber; an internal EGR control part for keeping a part of a burnt gas generated by the combustion remaining as an internal EGR in the combustion chamber; and a combustion mode switching control part for switching the combustion mode between the spark ignition combustion mode and the compression ignition combustion mode, wherein, when the combustion mode switching control part carries out switching from the spark ignition combustion mode to the compression ignition combustion mode, the control apparatus is configured to: increase an internal EGR amount of the internal EGR; advance the ignition timing; and to decrease the fuel injection amount so that an oxygen density contained in the internal EGR used to form the mixture increases.