| 摘要 |
PURPOSE:To reduce the change of a supercharging pressure so as to enable the reducing of a torque shock by adjusting the supercharging pressure for a determined pressure when an engine accelerates, and correcting the determined pressure lower the larger the acceleration is. CONSTITUTION:A secondary turbo supercharger 206 operates by installing an exhaust cut valve 223 in an exhaust passage 203 for exclusive use of the secondary turbo supercharger 206, and opening the exhaust cut valve 223 only in the range of a high sucked air amount of an engine 201. A control unit 246 is given an output by a throttle sensor and shift sensor 259 which detect the opening of a throttle valve 216, and controls an exhaust leakage valve 230 in order to adjust a supercharging pressure for a determined pressure when the engine 201 accelerates and to correct the determined pressure lower the lower speed stage a shift position is. This restrains a high pressure supply from going down due to the delayed response, etc., of the secondary turbo supercharger 206 when the exhaust cut valve 223 opens, and enables the reducing of a torque shock. |
