Patent ID: 9713959
Date: 2017-07-25
CPC Classifications: B60L,B60T,F16D

Claim:
1. A motor vehicle having a hybrid drive which comprises at least one wheel which can be driven by an electric machine, said motor vehicle comprising: a brake system with a pedal and two master brake cylinders which fluidically activate wheel brakes on the basis of a movement of the pedal, wherein pistons of the two master brake cylinders are rigidly coupled to one another via a connecting element, a recuperation device that permits recuperation of energy in a recuperation phase during a braking process, the recuperation device comprising a pressure-reducing valve device that reduces the brake pressure in the recuperation phase, a first master brake cylinder of the two master brake cylinders embodied as a compensator for compensating a hydraulic effect of the pressure-reducing valve device, and an equalization chamber, wherein the pressure-reducing valve device comprises a hydraulic actuator and a balance cylinder hydraulically connected to the hydraulic actuator by a balance piston, the balance piston dividing two hydraulic chambers within the balance cylinder, wherein a first hydraulic chamber of the two hydraulic chambers is fluidically connected to the first master brake cylinder of the two master brake cylinders, and a second hydraulic chamber of the two hydraulic chambers is fluidically connected to a second master brake cylinder of the two master brake cylinders, wherein the first master brake cylinder of the two master brake cylinders is also fluidly connected to the equalization chamber, wherein fluid delivered either into or from the hydraulic actuator during the recuperation phase biases the balance piston, which causes fluid to be delivered from the first hydraulic chamber of the balance cylinder into the first master brake cylinder and then into the equalization chamber.