Patent classifications
B60T8/4077
Electronic brake system using integrated sensor and method of operating the same
Disclosed herein is an electronic brake system using an integrated sensor, which includes a hydraulic block configured to distribute and supply a fluid to a wheel brake, and having a through-hole penetrated at both sides thereof, a sensor module installed at one side of the hydraulic block having the through-hole, for sensing a linear displacement of a brake pedal and a position of a motor, and an electronic control unit installed to a side of the hydraulic block opposite to the sensor module, in order to determine a movement distance of the pedal, based on the linear displacement of the pedal sensed by the sensor module, and control rotation of the motor depending on the linear displacement of the pedal.
Braking system for a motor vehicle
A braking system for a motor vehicle for actuating hydraulically actuatable wheel brakes comprises a first and a second electrically controllable pressure source for providing a brake pressure for actuating the wheel brakes. A first electric energy supply unit and a second electric energy supply unit that is independent of the first electric energy supply unit are provided. An electrically controllable pressure modulation device for setting brake pressures that are individual to each of the wheel brakes has at least one electrically actuatable inlet valve for each wheel brake. The first pressure source can be supplied with electric energy by the first energy supply unit, the second pressure source can be supplied with electric energy by the second energy supply unit, and the pressure modulation device can be supplied with electric energy by the first energy supply unit and by the second energy supply unit.
ELECTROMECHANICAL BRAKE BOOSTER AND METHOD FOR MANUFACTURING AN ELECTROMECHANICAL BRAKE BOOSTER
An electromechanical brake booster for a braking system of a vehicle. The brake booster includes a spindle nut that is movable into rotation using an electric motor that is intrinsic or external to the brake booster, a spindle situated at the spindle nut and rotatably fixedly held using a support plate in such a way that the spindle and the support plate are movable into pure translatory motion using the spindle nut that is moved into rotation, and a reaction disk receiving element that is also movable using the support plate that is moved into pure translatory motion. The reaction disk receiving element includes a receiving opening in which a reaction disk is situated. The support plate and the reaction disk receiving element are designed as a one-piece component. A method for manufacturing an electromechanical brake booster for a braking system of a vehicle, is also described.
METHOD FOR OPERATING A VEHICLE BRAKE SYSTEM, CONTROL UNIT, AND VEHICLE
A method for operating a vehicle brake system including a brake booster and an electronic traction control device, which is used as a fallback level in a malfunction of the brake booster. The position of an accelerator pedal is ascertained when a malfunction of the brake booster is detected, and under the precondition that the accelerator pedal is released, a predefined initial pressure is built up in a pressure chamber of a master brake cylinder of the vehicle brake system with the aid of the traction control device so that a deceleration of the vehicle is induced. A control unit which is designed to carry out the method, and a vehicle having a vehicle brake system and a control unit, are also described.
MOTOR VEHICLE BRAKE SYSTEM, METHOD FOR OPERATING SAME AND CONTROL APPLIANCE THEREFOR
A motor vehicle brake system is specified. The brake system comprises a driving dynamics regulation system, which is designed to carry out a wheel-specific regulating intervention on each of a plurality of vehicle wheels, and an electrically controllable actuator, which is designed to generate or boost a service brake force. The brake system further comprises a control, which is designed, in the event of an identified loss of function of the driving dynamics regulation system, to select one of at least two vehicle wheels on which a regulating intervention by the driving dynamics regulation system would be required and to electrically control the actuator on the basis of a regulating intervention determined for the selected vehicle wheel.
VEHICLE BRAKE SYSTEM AND DIAGNOSTIC METHOD FOR DETERMINING A LEAK IN A SIMULATOR VALVE
A diagnostic method to identify a leak in a simulator valve for a vehicle brake system comprising the steps of: (1) energizing a secondary three-way valve, a pumping valve, a simulator test valve, and a plurality of apply valves in order to maintain a pressure medium from a plunger assembly within a boost circuit; (2) applying a plunger in the plunger assembly to a predetermined pressure level; (3) holding the plunger in position within the plunger assembly; and (4) identifying a leak in a simulator valve via a signal from an ECU to a vehicle user interface if the pressure in the boost circuit deteriorates at or more than a pre-determined rate.
VEHICLE BRAKE SYSTEM AND DIAGNOSTIC METHOD FOR DETERMINING A LEAK IN ONE OR MORE THREE-WAY VALVES
A diagnostic method to identify a leak in a three-way valve for a vehicle brake system having a remote master cylinder which includes the steps of: (1) providing a pedal simulator having pressure medium; (2) de-energizing a secondary three-way valve; (3) retracting a dual acting plunger to the home position to drop the pressure in the boost circuit to zero while also monitoring the pressure at the output of a fluid separator via a secondary master cylinder pressure sensor; (4) determining a rate of pressure reduction at the output of a fluid separator via a secondary master cylinder pressure sensor; and (5) identifying a leak in at least one of a primary three-way valve and the secondary three way valve if the rate of pressure reduction is equal to or higher than a pre-determined rate.
VEHICLE BRAKE SYSTEM AND DIAGNOSTIC METHOD FOR DETERMINING A LEAK IN ONE OR MORE THREE-WAY VALVES
A diagnostic method to identify a leak in simulator valve in a vehicle brake system includes the steps of: (1) providing a simulator partially filled with a pressure medium and a de-energized simulator valve; (2) energizing a pumping valve, a secondary three-way valve, and a plurality of apply valves; (3) applying and retracting a plunger in a plunger assembly at least two cycles so that a predetermined pressure is achieved; (3) holding a plunger in position within the plunger assembly while maintaining a replenishing check valve in a closed/de-energized position and energizing the simulator valve; (4) obtaining a measured master cylinder secondary pressure decay; (5) comparing the measured master cylinder secondary pressure decay to a predetermined pressure decay value; and (7) identifying a leak in the simulator valve if the measured master cylinder secondary pressure decay does not match the predetermined master cylinder secondary pressure decay.
Braking system for a motor vehicle
A braking system for a motor vehicle comprises a first and second electrically controllable pressure source for providing a brake pressure for actuating the wheel brakes. An electrically controllable pressure modulation device sets brake pressures that are individual to each of the wheel brakes, said device having electrically actuatable inlet valves and outlet valves for each wheel brake. The second pressure source comprises a motor-pump unit and at least one low-pressure accumulator. The low-pressure accumulator is connected to an output connection of at least one outlet valve. A first and a second energy supply unit for the braking system are independent from one another. The first energy supply unit supplies the first pressure source with energy. The second energy supply unit supplies the second pressure source with energy. The pressure modulation device is supplied with energy by the first energy supply unit and by the second energy supply unit.
Automatic control braking system for vehicles
A braking system for vehicles having a master cylinder, and at least one braking device. The master cylinder has a first and a second output circuit, containing the same brake fluid. The first output circuit is intercepted by a first control valve fluidically connected to a braking simulator and to the at least one braking device so as to alternately connect the first output circuit to the braking simulator or to the at least one braking device for its actuation. The second output circuit is fluidically connected to the at least one braking device for its actuation, an automatic hydraulic actuation unit operatively connected to the master cylinder by a hydraulic actuation circuit containing an actuation fluid distinct from the brake fluid and fluidically separated from this. And, at least a processing and control unit of the system that supervises the operation of the braking systems.