Patent ID: 8317272
Filing Date: 2012-11-27
Classification: B60K,B60L,B60T,B60W,Y02T

Abstract:
1. Braking system for a vehicle to control a regenerative braking; the braking system comprises: a plurality of hydraulically operated mechanical brakes; a hydraulic braking circuit connected to the mechanical brakes; a brake pump to raise pressure in the hydraulic braking circuit; a brake pedal mobile between a resting position and a maximal braking position; an elastic system pushing the brake pedal towards the resting position; a connecting cap, which mechanically connects the brake pedal to the brake pump, has a first end integral to the brake pedal and a second end, opposed to the first end, integral to the brake pump, and is divided in two independent parts, having two respective third and fourth ends facing each other; a position sensor to read the position of a part of the connecting cap integral to the brake pedal; an energy recovery system comprising at least an electric machine to work as a generator; and a pilot system to pilot the electric machine of the energy recovery system for effecting a regenerative braking and uses the position of the part of the connecting cap integral to the brake pedal detected by the position sensor for controlling the operation of the electric machine of the energy recovery system as a generator, so that the braking torque absorbed by the electric machine of the energy recovery system is inversely proportional to the distance existing between the two parts of the connecting cap and the maximal braking force absorbable by the electric machine working as a generator is obtained when the two parts of the connecting cap are at a minimum distance from each other; wherein the elastic system comprises a first spring interposed between the two parts of the connecting cap and is compressed between the third and fourth ends of the two parts of the connecting cap; and wherein the position sensor has a mobile slider integral to an element of the elastic system.