| 摘要 |
An automotive engine has a turbocharger including a turbine, a compressor driven by the turbine, and a wastegate valve provided in a bypass around the turbine, and an actuator for operating the wastegate valve so as to prevent intake pressure from becoming extremely high. The system has an intake pressure sensor for detecting the intake pressure and a throttle position sensor for detecting a throttle position. A basic control value is determined in accordance with driving conditions of the engine, and a feedback control value is calculated in accordance with the difference between the intake pressure detected by the intake pressure sensor and a limit value. When a peak of the intake pressure is detected in the acceleration state of the engine, the basic control value and the feedback control value are combined, and the actuator is driven in accordance with the combined control value.
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