| 摘要 |
PROBLEM TO BE SOLVED: To restrict change of braking force even when an engine situation is changed. SOLUTION: This device is provided with an engine actuation state detecting means to detect an engine actuation state having effects on a negative pressure of a vacuum booster, and a negative pressure supply means capable of changing a negative pressure supply quantity to be supplied to a constant pressure chamber of the vacuum booster in accordance with the engine actuation situation detected by the engine actuation situation detecting means. The negative pressure supply quantity to be supplied to the constant pressure chamber of the vacuum booster is changed in accordance with the engine actuation state having effects on the negative pressure of the vacuum booster by the negative pressure supply means. Change of braking force can thus be restricted even when the engine actuation state is changed. |
