| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a torque shock from occurring in association with switching of supercharging while suppressing an increase in a cost in a supercharger having both a turbo supercharger and a motor-operated supercharger. <P>SOLUTION: The bypass valve controller of a motor-operated supercharger includes the turbo supercharger 1; the motor-operated supercharger 2; a bypass passage 7 detouring the motor-operated supercharger 2; a bypass valve 3 for opening and closing the bypass passage 7; a pressure detecting means 8 provided in one intake passage of upstream or downstream of the bypass valve 3; a pressure estimating means 4 for estimating a pressure of any other intake passage from a detected value by the pressure detecting means 8, an amount of intake air, and an engine rotational speed; a means 31 for detecting an acceleration request of a vehicle; and a control means for supercharging by the motor-operated supercharger 2 while relating to the bypass valve 3 when the acceleration request is detected, and for opening the bypass valve 3 when the pressures of the upstream and the downstream of the bypass valve 3 become substantially equal. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
