| 摘要 |
In a vehicle capable of performing regenerative braking and fluid pressure braking, in changing from the regenerative braking to the fluid pressure braking in response to a decrease of a vehicle speed due to braking, a fluid pressure braking force is increased from 0 at a first increasing rate when the vehicle speed falls to or below a first threshold value (V1), and the fluid pressure braking force is increased at a second increasing rate, which is higher than the first increasing rate, when the vehicle speed falls to or below a second threshold value (V2), which is smaller than the first threshold value (V1). With this configuration, while occurrence of a squeal noise of a wheel cylinder can be prevented by setting the first increasing rate of the fluid pressure braking force at a small value, a required braking force can be generated without any problem by setting the second increasing rate, to be used subsequently thereto, of the fluid pressure braking force at a large value. |
| 主权项 |
1. A vehicle braking device which includes a regenerative braking device and a fluid pressure braking device and is capable of performing regenerative braking and fluid pressure braking, and which changes, after braking is started, from the regenerative braking to the fluid pressure braking, wherein:
when a first condition is met after the braking is started, the transition from the regenerative braking to the fluid pressure braking is started so that a fluid pressure braking force is increased linearly from 0 at a first increasing rate while the regenerative braking is simultaneously decreased linearly at a first decreasing rate, and when a second condition is met after the first condition is met, the fluid pressure braking force is increased linearly at a second increasing rate, which is higher than the first increasing rate while the regenerative braking is simultaneously decreased linearly at a second decreasing rate which is greater than the first decreasing rate, wherein the first condition is that a vehicle speed falls to or below a first threshold value after the braking is started, and wherein the second condition is that the vehicle speed further decreases and falls to or below a second threshold value, which is smaller than the first threshold value, after the first condition is met.
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