| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that there is a risk of variation of engine torque since intake air quantity differs according to supercharging conditions even if throttle opening is the same in an internal combustion engine provided with a turbocharger supercharging intake air by using exhaust gas. SOLUTION: An electronic control throttle valve is provided in an intake air passage. Throttle upstream pressure Pc or the like in a downstream of a compressor of the turbocharger and in an upstream of the throttle valve is read in S1. Target throttle opening tTVO is calculated based on accelerator opening APO in S3. Target throttle opening tTVO is corrected to a close side as upstream pressure gets higher in S4. The target throttle opening tTVO is corrected to an open side as engine rotation speed gets higher in S5. COPYRIGHT: (C)2007,JPO&INPIT
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