| 摘要 |
<p>PURPOSE:To improve a response characteristic of supercharge pressure control with no worsening of durability of a duty solenoid, by previously calculating a control value of supercharge pressure to be reflected in a high load region when knocking is detected in a low load region. CONSTITUTION:A load detecting means C detects an engine to be in a low load region, and when a knocking detecting means E detects knocking, the engine, in which a supercharge pressure control value arithmetic means F previously calculates a control value controlling a supercharge pressure, decreases the supercharge pressure by a supercharge pressure control means D by reflecting the calculated control value in a control value reflecting means G when the engine comes to be in a high load region. Durability of a duty solenoid is prevented from worsening because the duty solenoid of the supercharge pressure control means D is inoperative in the low load region. Also a response characteristic of supercharge pressure control is improved because the duty solenoid of the supercharge pressure control means D is actuated by reflecting the control value, previously calculated in the low load region, when the engine comes to be in the high load region.</p> |
