Patent ID: 6912459
Filing Date: 2005-06-28
Classification: F02D,Y02T

Abstract:
1. A control device for an internal combustion engine, comprising: an ion current detecting means for detecting an ion current flowing between electrodes, via ions generated in a combustion chamber upon combustion, at a time when a voltage is applied to said electrodes disposed in said combustion chamber of said internal combustion engine; a parameter extracting means for extracting an ion current characteristics parameter correlating to an IMEP, from said ion current detected by said ion current detecting means; an IMEP-related-information calculating means for using said ion current characteristics parameter outputted from said parameter extracting means, to calculate information relating to said IMEP of said internal combustion engine; and an internal combustion engine control means for controlling operations of said internal combustion engine based on said output from said IMEP-related-information calculating means.