| 摘要 |
<p>PROBLEM TO BE SOLVED: To shorten compressor stop time in a case where a compressor of an air conditioner is stopped to restore a negative pressure, when a brake negative pressure drops to a limit value or less in idling rotation state.SOLUTION: When braking becomes off under a condition where an intake negative pressure P is less than a reference value P2, an air conditioner is cut, and at the same time, an intake amount is throttled to a provisional air amount Q2 which is less than a normally required air amount Q0 and more than an absolute air amount which is required for combustion. Thus, an intake negative pressure can be quickly recovered. When the intake negative pressure reaches a required negative pressure P0 or a throttling time of a provisional air amount Q3 reaches a limit time T2, a required air amount is supplied by increasing an open degree of a throttle valve 11. When the intake negative pressure P reaches the required negative pressure P0, the open degree of the throttle valve 11 is returned and driving of the air conditioner is resumed.</p> |
