Patent application number | Description | Published |
20140208737 | MECHANICAL-HYDRAULIC BRAKE BOOSTER HAVING AN EXPANSION FOR AUTONOMOUS BRAKING - A brake booster for a vehicle, including: a cylinder housing having a center bore for receiving a user-operated push-rod piston for building up a fluid pressure inside of the cylinder housing in response to actuation of the push-rod piston, a first fluid line being in fluid communication with an axial recess in the cylinder housing, and a second fluid line being in fluid communication with the center bore in a cylinder housing region, the first and second fluid lines each being connected to a fluid reservoir at their respective other ends; a third fluid line, which interconnects the first and second fluid lines in a fluid manner; a first electrically and/or hydraulically and/or mechanically operable valve, which is situated in the third fluid line; a second electrically and/or hydraulically and/or mechanically operable valve, which is situated in the second fluid line, namely, in back of a fluid connection of the third fluid line to the second fluid line, when viewed in the direction of the fluid reservoir; and a build-up of fluid pressure being able to be generated autonomously with the aid of the first valve, when the second valve interrupts a fluid stream in the second fluid line. | 07-31-2014 |
20140250882 | HYDRAULIC BRAKE BOOSTER - A hydraulic brake booster includes: a piston housing; and a first piston and a second piston displaceably spaced apart from each other inside the piston housing in a longitudinal direction and sealed from an inner wall of the piston housing, the first piston being fixedly coupled to a pressure piston rod so that in an actuation the first piston exerts a fluid pressure on a first volume by way of one surface, and the second piston exerts the fluid pressure on a second volume by way of one surface. In the case of a failure of the brake booster, the first volume is connected with a variable volume situated between an annular surface of the first piston and an inner surface of the piston housing, so that when the pressure piston rod is actuated, a pressure equilibrium forms between the first volume and the variable volume. | 09-11-2014 |
20140306514 | BRAKING SYSTEM FOR A VEHICLE AND METHOD FOR OPERATING THE BRAKING SYSTEM - A braking system for a vehicle includes: a brake input element for an actuation to input a brake pressure signal by a driver; a brake master cylinder coupled to the brake input element and supplied with hydraulic fluid from a hydraulic fluid reservoir fluidically connected to the brake master cylinder; and a first brake circuit. The first brake circuit has: a switchover valve with controllable through flow rate for the hydraulic fluid; a pressure regulating valve with controllable through flow rate for the hydraulic fluid; a hydraulic pump for optionally building up an elevated hydraulic fluid pressure in the first brake circuit; at least one first wheel brake cylinder exerting a braking torque on a first vehicle wheel coupled to the wheel brake cylinder; and a first fluid line from the hydraulic fluid reservoir being fluidically connected to the pressure regulating valve and to the hydraulic pump. | 10-16-2014 |
20140345270 | BRAKE BOOSTER DEVICE FOR A BRAKING SYSTEM OF A VEHICLE, AND METHOD FOR MANUFACTURING A BRAKE BOOSTER DEVICE FOR A BRAKING SYSTEM OF A VEHICLE - A brake booster device for a braking system of a vehicle includes: a booster body to which a brake-boosting force is exertable by an actuator device; a first piston rod component to which the brake-boosting force is at least partially transmittable via a first contact with the booster body, the first piston rod component contacting the booster body at a first contact surface such that the first piston rod component is at least partially adjustable; and a second piston rod component to which the brake-boosting force is at least partially transmittable via a second contact with the booster body, the second piston rod component contacting the booster body at a second contact surface such that the second piston rod component is adjustable together with the first piston rod component. | 11-27-2014 |
20140345272 | Master brake cylinder system and brake system for a vehicle - A master brake cylinder system having a master brake cylinder housing having at least one first pressure chamber and a second pressure chamber, a rod piston at least partially displaceable into the first pressure chamber, a floating piston situated between the first pressure chamber and second pressure chamber, and a simulator device having a simulator piston, which is at least partially displaceable into the simulator chamber counter to a spring force of at least one simulator spring present in a simulator chamber, the simulator piston of the simulator device being situated as to the second pressure chamber so that the simulator piston is displaceable at least partially into the simulator chamber, using a pressure present in the second pressure chamber against the spring force of the at least one simulator spring. In addition, also described is a brake system for a vehicle having a master brake cylinder system. | 11-27-2014 |
20140345986 | METHOD FOR SETTING A HYDRAULIC VEHICLE BRAKE - A method for operating a vehicle brake having a brake servo unit and a parking brake actuator. In the case of a failure of the brake servo unit, the distance between brake linings of the vehicle brake and brake disk is reduced by actuating the parking brake actuator. | 11-27-2014 |
20150034438 | Brake Booster for a Vehicle and Method for Operating a Brake Booster of a Vehicle - A brake booster and related method for its operation for a vehicle, having a master brake cylinder having a first primary piston chamber that is variable using an adjustable first primary piston component, a braking force transmission component, using which at least one driver braking force is transmittable by the adjustable first primary piston component contacted by the braking force transmission component, and an adjustable second primary piston component, the master brake cylinder having a second primary piston chamber that is variable using the adjustable second primary piston component, and the brake booster has a booster force transmission component, using which a booster force from the actuator device is transmittable at least partially to the adjustable second primary piston component contacted by the booster force transmission component, and the braking force transmission component in its force-free initial position is distanced by a first free play from the first primary piston component and/or the booster force transmission component, in its force-free initial position, is distanced by a second free play from the second primary piston component. | 02-05-2015 |
20150158475 | MASTER BRAKE CYLINDER FOR A BRAKING SYSTEM OF A VEHICLE AND METHOD FOR OPERATING A MASTER BRAKE CYLINDER - A master brake cylinder for a braking system of a vehicle has: a first filling volume, which is fillable with liquid, and whose first dimension is variable by adjusting at least one first piston wall; a second filling volume, which is fillable with liquid, and whose dimension is variable by adjusting at least one second piston wall; and a valve unit, the first filling volume being connected via the valve unit to the second filling volume in such a way that when the valve unit is switched into a first valve state, a joint first pressure chamber pressure prevails in the first filling volume and in the second filling volume. | 06-11-2015 |