| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an internal combustion engine control system capable of detecting rotation frequency and intake pressure of an internal combustion engine used for controlling the internal combustion engine by a single sensor. <P>SOLUTION: The internal combustion engine control system which includes an intake pressure sensor 14 for detecting intake pressure of an intake passage 2 of the internal combustion engine 1, includes a control processing unit 13 including a rotation frequency estimating means for estimating the rotation frequency of the internal combustion engine 1 based on a variable period of a detection value of the intake pressure detected by the intake pressure sensor 14, and executing control processing by using the detection value of the intake pressure detected by the intake pressure sensor 14 and the rotation frequency estimated by the rotation frequency estimating means. The control processing unit 13 controls opening/closing of an electric valve 11 for opening/closing a secondary supply passage 8 which supplies secondary air to the upstream side of a catalyst device 6 of an exhaust passage 5. <P>COPYRIGHT: (C)2013,JPO&INPIT |
