| 摘要 |
PROBLEM TO BE SOLVED: To renew atmospheric pressure from suction pressure without using an atmospheric pressure sensor in a system in which an intake air control valve is arranged on the upstream side or the downstream side of a throttle valve provided in an air intake passage of every cylinder of an independent air-intake type internal combustion engine. SOLUTION: In the case where the degree TA of throttle opening of the throttle valve 4 detected by a throttle opening degree sensor 23 is within a predetermined operation range, where the number of revolutions NE of the internal combustion engine 1 detected by a crank angle sensor 25 is within a predetermined operation range, where the intake air control valve opening degree ACVA of the intake air control valve 9 detected by an intake air control valve opening degree sensor 28 exceeds a predetermined opening degree, or where the suction pressure PM detected by a suction pressure sensor 22 exceeds a predetermined value, the atmospheric pressure is renewed from the suction pressure PM. As described above, without directly detecting the atmospheric pressure, it is possible to adequately renew the atmospheric pressure only by sequentially taking in the suction pressure PM when the predetermined operation conditions or the like are satisfied. COPYRIGHT: (C)2006,JPO&NCIPI
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