| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent the occurrence of a turbo lag associated with an opening/closing operation of a waste gate valve. <P>SOLUTION: An opening/closing control device of the waste gate valve 210 which is located on a bypass passage 111 bypassing a turbine wheel 101 includes: a negative pressure actuator 230 for opening and closing the waste gate valve 210; a negative pressure source 260 driven by an engine 1; a shut-off valve 240 inserted between the negative pressure actuator 230 and the negative pressure source 260; and a shut-off valve control unit 320 for controlling the opening/closing of the shut-off valve 240. In addition, the shut-off valve control unit 320 closes the shut-off valve 240 when a stop condition of the engine 1 is satisfied. <P>COPYRIGHT: (C)2012,JPO&INPIT |
