| 摘要 |
PROBLEM TO BE SOLVED: To suppress incapability of properly raising a W/C pressure because of low boosting performance.SOLUTION: A unit of traction control that augments a target pressure and a unit that diminishes the target pressure are provided with a hydraulic pressure augmentation filter and hydraulic pressure diminishment filter respectively that are different from each other. An effect of suppressing a change in the target pressure exerted by the hydraulic pressure augmentation filter is made smaller than an effect of suppressing the change in the target pressure exerted by the hydraulic pressure diminishment filter. The unit that augments the target pressure is allowed to make the change quickly, and the unit that diminishes the target pressure is allowed to make the change slowly. Accordingly, after an actual W/C pressure gets larger while following the target pressure, even if the W/C pressure is decreased, the W/C pressure is decreased only moderately. Therefore, an augmentation pressure needed to raise the W/C pressure to the target pressure next time is small. Therefore, the W/C pressure can be fully raised, and can highly responsively be raised to the target pressure. Eventually, an event that the W/C pressure cannot be properly raised because of low boosting performance can be suppressed. |
