Patent ID: 8086369
Filing Date: 2011-12-27
Classification: B60T,B60W

Abstract:
1. A brake hold control device comprising: a braking force holding section that holds braking force of a vehicle; a plurality of accelerator opening degree sensors that detect an accelerator opening degree corresponding to an amount of operation of an accelerator pedal; a defect determining section that detects a defect of the accelerator opening degree sensor; and a control section that receives detection signals from the plurality of accelerator opening degree sensors as input, wherein: when predetermined braking force holding conditions including accelerator opening degree conditions for holding braking force are satisfied, the control section controls the braking force holding section to hold the braking force, and, when predetermined held-brake release conditions including accelerator opening degree conditions for releasing a held brake are satisfied, the control section controls the braking force holding section to release the braking force; the accelerator opening degree conditions for holding braking force are set such that accelerator opening degrees corresponding to the detection signals from all the plurality of accelerator opening degree sensors are smaller than a predetermined upper limit opening degree for holding braking force; the accelerator opening degree conditions for releasing a held brake are set such that accelerator opening degrees corresponding to the detection signals from all the plurality of the accelerator opening degree sensors are greater than a predetermined lower limit opening degree for releasing a held brake; and the accelerator opening degree conditions for holding braking force and the accelerator opening degree conditions for releasing a held brake are satisfied before it is determined by the defect determining section that the accelerator opening degree sensor is defective.