| 摘要 |
<p>PURPOSE:To suppress torque shock due to abrupt closing of an air bypass valve at the time of acceleration, and to prevent an air fuel ratio being rich at the time of acceleration or being lead at the time of deceleration. CONSTITUTION:A pressure retardation valve 71 for retarding transmission of supercharging pressure into a diaphragm chamber 62b, is provided on a sensing route 63 for guiding the pressure of an intake route 14 of the downstream of a throttle valve to the diaphragm chamber 62b of an air bypass valve 62, and the air bypass valve 62 is opened slowly at the time of acceleration.</p> |
