ELECTRIC BRAKE ASSIST SYSTEM FOR VEHICLE USE

摘要

An electric brake assist system is adapted for use with a vehicle, and includes a vacuum pump unit including an electric vacuum pump connected to the vacuum tube unit, an electric pressure sensing unit for detecting a vacuum degree in a vacuum tube unit of the vehicle, and an electric control unit to sense an electrical parameter associated with operation of the vehicle and the brake assist system. The electric control unit includes a controller configured to operate in at least one of a plurality of failure protection modes and system operation modes according to the detected vacuum degree and the sensed electrical parameter.

主权项

1. An electric brake assist system adapted for use with a vehicle, the vehicle including a brake booster and a vacuum tube unit coupled to the brake booster, said electric brake assist system comprising:
a vacuum pump unit including an electric vacuum pump to be connected to the vacuum tube unit; an electric pressure sensing unit to be disposed on the vacuum tube unit for detecting a vacuum degree in the vacuum tube unit; and an electric control unit coupled to said electric vacuum pump and said electric pressure sensing unit, operable to sense an electrical parameter associated with operation of at least one of the vehicle and said electric brake assist system, and including a controller configured to operate in at least one of a plurality of failure protection modes and system operation modes according to the vacuum degree detected by said electric pressure sensing unit and the electrical parameter sensed by said electric control unit, wherein the system operation modes include an initial operation mode, and said controller is operable under the initial operation mode to output an operation signal for driving said electric vacuum pump when the vacuum degree detected by said electric pressure sensing unit is lower than a preset value.