Patent ID: 8210621
Filing Date: 2012-07-03
Classification: B60T

Abstract:
1. A vehicle brake device comprising: a brake operating element configured and arranged to be operated by a driver of a vehicle; a master cylinder operatively coupled to the brake operating element, and configured and arranged to generate a fluid pressure in accordance with an operation of the brake operating element; and a controller configured to calculate a target deceleration rate based on the fluid pressure of the master cylinder and to control a braking force of the vehicle in accordance with the target deceleration rate, the controller being further configured to limit a decrease in the target deceleration rate while the target deceleration rate is being decreased in response to a decrease in the fluid pressure of the master cylinder that occurs while an operation amount of the brake operating element by the driver increases, the controller being further configured to add an addition value to the target deceleration rate to limit the decrease in the target deceleration rate, the controller being further configured to increase the addition value in response to the controller determining both an increase of the operation amount of the brake operating element by the driver and the decrease in the fluid pressure of the master cylinder.