US 12,145,565 B2
Brake by wire braking system for vehicles, provided with electric actuation and electric back-up
Massimo Di Stefano, Curno (IT); Samuele Mazzoleni, Curno (IT); and Luca Cappelletti, Curno (IT)
Assigned to Brembo S.p.A., Bergamo (IT)
Appl. No. 16/647,725
Filed by FRENI BREMBO S.P.A., Curno (IT)
PCT Filed Sep. 10, 2018, PCT No. PCT/IB2018/056863
§ 371(c)(1), (2) Date Mar. 16, 2020,
PCT Pub. No. WO2019/058204, PCT Pub. Date Mar. 28, 2019.
Claims priority of application No. 102017000105896 (IT), filed on Sep. 21, 2017.
Prior Publication US 2020/0254988 A1, Aug. 13, 2020
Int. Cl. B60T 8/92 (2006.01); B60T 8/17 (2006.01); B60T 8/32 (2006.01); B60T 8/36 (2006.01); B60T 13/66 (2006.01); B60T 17/22 (2006.01); B62D 6/00 (2006.01); B60T 7/04 (2006.01); B60T 7/08 (2006.01)
CPC B60T 8/92 (2013.01) [B60T 8/17 (2013.01); B60T 8/3255 (2013.01); B60T 8/36 (2013.01); B60T 13/662 (2013.01); B60T 17/221 (2013.01); B62D 6/00 (2013.01); B60T 7/042 (2013.01); B60T 7/085 (2013.01); B60T 2260/02 (2013.01); B60T 2270/30 (2013.01); B60T 2270/402 (2013.01); B60T 2270/404 (2013.01); B60T 2270/60 (2013.01); B60T 2270/82 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A braking system for a vehicle, comprising:
a right front brake group and a left front brake group intended for a front axle of the vehicle, a right rear brake group and a left rear brake group intended for a rear axle of the vehicle,
each brake group comprising a brake disc, a braking device associated with said brake disc, and electro-hydraulic or electromechanical actuator devices for each braking device,
a control unit for each brake group, operatively connected to the electromechanical actuators of each brake group through at least one respective piloting device,
each control unit being powered by one of two independent power sources, wherein the independent power sources are galvanically isolated from one another,
each control unit being programmed to implement, via said piloting device, a standard braking strategy in case of standard operation for each brake group and a fault braking strategy, if it detects an electrical fault of one or more of the brake groups;
wherein the control units are programmed so that in case of fault of one of the brake groups, the actuation of the three remaining brake groups is ensured,
wherein the braking system is adapted to coordinate control of a vehicle steering mechanism with the actuation of the functioning brake groups,
wherein each control unit at each brake group of the front and rear axle is operatively connected to said at least one respective piloting device located at each brake group, wherein said at least one respective piloting device comprises both a primary piloting device and a secondary piloting device at each brake group, wherein each of said primary and secondary piloting devices is operatively connected to the brake groups of the same axle,
so that, in case of standard operation, each braking device is actuated by at least one or both of said primary and secondary piloting devices and, in case of electric fault of one of said devices, the braking device of the brake group in fault is actuated by the other piloting device.