| 摘要 |
PURPOSE:To prevent supercharge operation in the decelerating condition of an automobile so as to improve fuel consumption, by providing a throttle opening sensor and stopping the supercharge operation when the throttle opening is below a prescribed value. CONSTITUTION:A supercharger 14 is driven by an engine output through a solenoid clutch 18, and supercharging action is stopped when a solenoid 20 is not excited. A normally-opened valve 21, provided in an intake passage 22 bypassing the supercharger 14, is controlled in the closing direction while the supercharger 14 is operated, causing a supercharge pressure to increase, and if the supercharger 14 is not operated, engine inake air is fed to an engine 12 from the valve 21. Feeding a control signal by a control circuit 30 to solenoids 20, 23 on the basis of input signals from an engine speed sensor 31 and a throttle opening sensor 50, operation of the supercharger is prevented under the decelerating condition so that durability of the supercharger and fuel consumption can be improved. |
