Patent ID: 9745904
Date: 2017-08-29
CPC Classifications: F01M,F02D,Y02T

Claim:
1. A control device for an internal combustion engine, comprising: an operating-region restricting section that includes a restriction region preset to correspond to a low-speed and high-load region over which an abnormal combustion can occur due to oil, and that restricts an actual engine operating condition such that the actual engine operating condition does not enter the restriction region; an abnormal-combustion detecting section that detects an actual occurrence of the abnormal combustion within a designated inspection region set in a low-speed and high-load side as an operating region larger than the restriction region; and a restriction-region variably setting section that expands the restriction region when the abnormal combustion is detected by the abnormal-combustion detecting section during an operating state of the internal combustion engine.