| 摘要 |
PROBLEM TO BE SOLVED: To suppress the deterioration of braking performance while suppressing the drive restriction of an auxiliary machine in the case of the shortage of brake negative pressure. SOLUTION: A surplus amount B in consideration of the responsiveness of brake negative pressure recovery is added to a requirement value A for the brake negative pressure, and the shortage of brake negative pressure is determined by comparing the added value with the actual value of the brake negative pressure (S1). In the case of the shortage of the brake negative pressure, an ISC correction amount is calculated so as to reduce a suction air amount according to the shortage amount of the brake negative pressure which is the difference between the actual value of the brake negative pressure and the requirement value A for the brake negative pressure (S3), and the load of an air conditioner is limited to a limit value E of an air-conditioner duty value as an upper limit value which is calculated based on the shortage amount of the brake negative pressure (S4). In addition, the recovery of the brake negative pressure is determined by comparing the requirement value A for the brake negative pressure with the actual value of the brake negative pressure (S5), and the air conditioner is released from its load limitation when the brake negative pressure recovers from the shortage(S6). COPYRIGHT: (C)2011,JPO&INPIT
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