42results about "ASR control systems" patented technology

A brake system has a wheel brake and is operable under a non-failure normal braking mode and a manual push-through mode. The system includes a master cylinder operable by a brake pedal during a manual push-through mode to provide fluid flow at an output for actuating the wheel brake. A first source of pressurized fluid provides fluid pressure for actuating the wheel brake under a normal braking mode. A secondary brake module includes a plunger assembly for generating brake actuating pressure for actuating the wheel brake under the manual push-through mode.

A system includes a sensor and a controller. The sensor is configured to detect sliding of a wheel of a vehicle. The controller is configured to communicate with the sensor and a traction motor operatively connected to the wheel such that the traction motor selectively applies forces in at least one direction to the wheel during operation. The controller is further configured to direct the traction motor to apply a motoring slide reducing force to the wheel when the sensor detects sliding of the wheel resulting from a frictional braking force.

A damping force control device 10 comprises vary damping shock absorbers, a detector, and a controller. Each of the shock absorbers sets damping coefficient from a minimum value to a maximum value in order to adjust damping force. The detector detects vertical vibration state quantity relating to vibration of the sprung mass. The controller performs an ordinary control for setting the damping coefficient based on the vertical vibration state quantity and according to a predetermined control law suitable for an assumption that all of the wheels touch ground. The controller performs, when at least one of the wheels is an ungrounded wheel which does not touch the ground and each of the other wheels is a grounded wheel which touches the ground, a specific control for setting the damping coefficient of the shock absorber corresponding to the grounded wheel to a first specific value greater than the minimum value.

A piston pump assembly for a hydraulic power vehicle braking system including an electric motor, a planetary gear set, a helical gear, and a piston which is displaceable in a cylinder. To prevent the piston from rotating in the cylinder, cylinder pins are situated in grooves at an inner side of the cylinder and engage with the recesses in a flange of the piston. Due to reshaping, the grooves are closed at one end, so that the cylinder pins are axially secured.

An electric brake system and a method for controlling the same are disclosed. The electric brake system includes a hydraulic control device, a sensing unit, and a controller. The hydraulic control device generates hydraulic pressure using a piston operated by an electric signal generated in response to a displacement of a brake pedal. The sensing unit detects driver's braking intention. When an electronic stability control (ESC) of a vehicle operates, the controller calculates a change amount of stroke of the piston needed to output brake pressure corresponding to the driver's braking intention, and acquires the calculated stroke change amount so as to boost pressure of each wheel at a predetermined slope.

An electronically pressure-controllable braking system and methods for controlling an electronically pressure-controllable braking system. Each wheel brake of the braking system is connected respectively to at least two brake circuits, pump units and valve devices of one brake circuit are operable respectively independently of the pump units and the valve devices of the respective other brake circuit. This provides a cost-effectively and compactly designed redundant braking system, which is suitable for use in autonomously, i.e., driverlessly drivable, motor vehicles.

In a solenoid valve for a hydraulic braking system, a valve body has a receiving region which at least partially accommodates a guide assembly, the valve armature running axially through at least one through-opening of the guide assembly. A mechanical detent device is formed between the guide assembly and the valve armature, the detent device releasing the valve armature when the latter is in a de-energised closed position, such that the restoring spring drives the valve armature and pushes the closing element sealingly into the valve seat to produce a sealing function, and said detent device fixes the valve armature in a de-energised open position against the force of the restoring spring in an axial detent position, such that the closing element is raised from the valve seat.

Device for improving the performance of an antilock braking (ABS) and/or anti-slip regulation (ASR) and/or electronic stability control (ESC) system of a vehicle comprising at least a fluid-dynamic system for controlling the braking pressure composed of at least one standard ABS management control unit and a brake-servo unit and a fluid pressure pump, solenoid valves connected to pipes for oil orair and at least phonic wheels and tachometer sensors respectively present one for each wheel of the vehicle, the device comprises additional intelligent sensors associated with at least one of the braking pads acting upon the braking disk of each wheel in order to collect additional data and at least one dedicated ECU control unit for managing said additional data and interacting with at least said ABS control unit. The method consists in detecting, by means of the pad and the dedicated control unit, the actual value of the tire-ground coefficient of friction that is constantly updated duringbraking using the braking torque data derived from the braking pad in order to adjust the braking pressure profile to the value of the actual coefficient of friction present between the tire and theground during the braking of the vehicle.

A brake system includes a service brake and a parking brake that brake a vehicle including a lift axle capable of ascending and descending. The brake system further includes a brake blocker device and a controller that controls the brake blocker device. The brake blocker device blocks at least one of supply of compressed air to the service brake and supply of compressed air to the parking brake. The service brake and the parking brake act on the lift axle. The controller actuates the brake blocker device when the lift axle is at a lifted position.

The invention relates to the field of automobile control devices, and provides an automatic parking method based on an ASR system. The method comprises the following steps: S1, monitoring the revolving speed of wheels and the position of a throttle valve through a wheel revolving speed sensor and a throttle valve position sensor of the ASR system, and then executing a step S2; S2, judging whether the conditions that the wheel revolving speed is zero and the throttle valve position is in an idling state are simultaneously met, executing a step S3 if the conditions that the wheel revolving speed is zero and the throttle valve position is in the idling state are simultaneously met, and executing a step S5 if the conditions that the wheel revolving speed is zero and the throttle valve position is in the idling state are not simultaneously met; S3, judging whether the lasted duration at which the wheel revolving speed is zero and the throttle valve position is in the idling state reaches the preset duration through timing by an ECU interior timer, executing a step S4 if the lasted duration at which the wheel revolving speed is zero and the throttle valve position is in the idling state reaches the preset duration, and executing the step S1 if the lasted duration at which the wheel revolving speed is zero and the throttle valve position is in the idling state does not reach the preset duration; S4, starting brake control, and then executing the step S1; and S5, removing the brake control, and then executing the step S1. No additional components are needed to be installed, the original automobile layout structure is not changed, facilities adopted in the method can be shared with the corresponding function components of the ASR antiskid system, and the method can be implemented just through the program updating in an electronic controller ECU, thereby being low in implementation cost.

The invention relates to a method for braking a vehicle, the vehicle having a transmission (2) controlled by a transmission control unit (3). In a method in which a transmission brake is not required,the transmission control unit (3) electronically requests a braking intervention.

An electro-pneumatic central pressure control module having at least a single channel, and which is implemented as a component for an electro-pneumatic service brake of a vehicle, having at least one pressure control channel which is electrically controllable with regard to a brake pressure. Also described is an electronic control device of the pressure control module having a board carrying electrical and electronic components, at least one inertial sensor being arranged on or at the at least one board and being electrically conductively connected to at least several of the electrical and electronic components on the board, in which an arrangement/apparatus ensures a lower vibration load of the inertial sensor on the board.