| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a control device of an internal combustion engine having a self-diagnosis function for a cylinder inner pressure sensor capable of correcting a variation of a detection value caused by an individual difference of the cylinder inner pressure sensor. <P>SOLUTION: The control device of the internal combustion engine comprises a supercharger 1 having a charging pressure varying means, a fuel cut control means, an intake pressure sensor 23 for detecting intake pressure in an intake passage 2, and the cylinder inner pressure sensor 25 for detecting pressure in the cylinder. When fuel cut control is performed, the charging pressure of the supercharger is forcibly raised to forcibly change air volume supplied into the cylinder, a difference between the detection values of the cylinder inner pressure sensor and the intake pressure sensor at that time is obtained, and judgment on right or wrong of the cylinder inner pressure sensor and correction of detection output are made by comparing the difference of the detection values with a predetermined value. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
