Patent ID: 7926888
Filing Date: 2011-04-19
Classification: B60K,B60T,B60W,Y02T

Abstract:
1. A braking apparatus for a vehicle having a plurality of wheels, said apparatus comprising; a brake pedal for receiving a force to initiate braking of the vehicle, a speed sensor for detecting a speed of the vehicle, a master cylinder having a reservoir for retaining a brake fluid, at least one hydraulically actuated brake coupled to one of said wheels and in fluid communication with said master cylinder, at least one electrically actuated brake coupled to one other of said wheels, a replenishment system in fluid communication with said master cylinder and said hydraulically actuated brake, and a control unit in electrical communication with said brake pedal and said speed sensor and said brakes for receiving said force and determining a requested vehicle deceleration rate as a function of said force and comparing said requested vehicle deceleration rate to a predetermined deceleration threshold and operating the braking apparatus in a first condition defined by said brake fluid being fed into said replenishment system and only said electrically actuated brake being applied in response to said requested vehicle deceleration rate being below said predetermined deceleration threshold and operating the braking apparatus in a second condition defined by said brake fluid being fed from said replenishment system into said hydraulically actuated brake to apply and blend said hydraulically actuated brake with said electrically actuated brake in response to said requested vehicle deceleration rate being above said predetermined deceleration threshold.