Abstract: In an automotive vehicle braking system, a hydraulic brake actuator includes a wedge for locking a hydraulic piston in a brake position for purposes of applying a park brake. To apply the park brake, hydraulic pressure is increased to advance the piston to urge the brake pads against the rotor. With the piston in the brake position, an electrical solenoid is energized to advance the wedge to engage the piston. The wedge includes an inclined surface that contacts an inclined surface connected to the piston or the housing, with sufficient frictional force to maintain the wedge in the advanced position without requiring hydraulic pressure or electrical power. Thus, the park brake remains applied even when the vehicle is turned off.

Abstract: A braking force distribution apparatus for a vehicle includes pressure sensors for detecting the internal pressures of the tires, and wheel speed sensors for detecting the angular speeds of the wheels. The apparatus obtains a dynamic load radius change rate of each tire which corresponds to the deviation of the internal pressure of the tire from a reference pressure, obtains a wheel speed for calculation of a slip value on the basis of the angular speed of the tire and the change rate, and obtains a slip value on the basis of the obtained wheel speed. As a result, EBD control is started at proper timing in accordance with the slip value.

Abstract: In a brake apparatus, a lead in a meshed portion between an external-thread portion (second stationary screw element) of a threaded shaft and an internal-thread portion (second movable screw element) of a nut is shorter than that in a meshed portion between an internal-thread portion (first stationary screw element) of a cylinder and an external-thread portion (first movable screw element) of a second piston. Accordingly, as the second piston and the nut move toward a control chamber while rotating in a unitary condition via a friction clutch, the second piston and the nut are united via the friction clutch, so that a contact portion between the thread surface of the second stationary screw element and the thread surface of the second movable screw element and a contact portion between the thread surface of the first stationary screw element and the thread surface of the first movable screw element push out against each other.

Abstract: A parking lever of a vehicle includes a slider of a predetermined length mounted to a lower area of a lever assembly. Also, a guide rail into which the slider is inserted is formed in a casing. The slider undergoes a sliding movement within the guide rail such that when the lever assembly is operated, the slider covers exposed areas of the guide opening of the casing.

Abstract: The invention is directed to a rubber mount for supporting a profile rod, and more particularly to a rubber mount for supporting a stabilizer of an automobile. It is the object of the invention to provide a mount of the aforedescribed type that can be installed on the profile rod easily, with only a few operating steps, preferably already at the manufacturer's site, and that has an simple and cost-effective construction. The proposed rubber mount includes an elastomer mounting body with an axially continuous slot which enables the mounting body to be pushed radially onto the profile rod for installation thereon. After installation, the mounting body can be secured with a clamping means (bracket), which according to the invention is formed on the mounting body itself. Stated differently, the bracket and mounting body are formed as a single piece, and the bracket is an integral component of the elastomer mounting body.

Abstract: A strategy is provided using feedback control algorithms to monitor and dynamically modify front and rear braking torque to maintain controllability in a vehicle that initially favors regenerative braking. Simple proportional-integral-derivative feedback controllers can be used. The controller can monitor wheel speed, lateral acceleration, yaw rate, and brake position to selectively activate non-regenerative braking independently for each individual wheel and regenerative braking in varying proportion based on at least one actual vehicle controllability value and at least one predetermined target value for controllability and optimization of energy recovery. Controllability factors can include predetermined longitudinal slip ratio, comparison of tire slip angle or yaw rate. For rear wheel drive configurations, the non-regenerative brakes can be applied to just one front axle wheel on the outside of a turn.

Abstract: A boosted brake (10) having a booster (12) for activating a primary piston (54) of a master cylinder (14) by way of a feeler (42), a reaction disk (28) and a push rod (52). The push rod (52) that is housed a decompression piston (62) and returned elastically by a spring (70) to a position of rest has at least two radial branches (64) in order to provide two boost ratios which differ according to the intensity of the input force.

Abstract: In a method for improving the operation of a hydraulic vehicle brake system with an active hydraulic brake boost, wherein a pressure fluid volume flow between a master brake cylinder and the wheel brakes of the vehicle is controlled by means of an analog or analogized separating valve, and wherein a hydraulic pressure is determined in the master brake cylinder, an increase of the hydraulic pressure in the master brake cylinder is monitored and/or controlled on the basis of the hydraulic pressure determined in the master brake cylinder in a transition of the separating valve from a closed switch position to an open switch position.

Abstract: The invention provides a method of forming a molded powertrain mount assembly. A metal insert is provided, the metal insert including an engine interface portion and a molded base interface portion. At least one seal member is positioned onto the engine interface portion of the metal insert. The metal insert with seal member is placed into a mold, and the mold is closed. Base material is introduced into the mold. The base material is restricted from flowing onto the engine interface portion of the metal insert using the seal member.

Abstract: A brake actuator is mounted on a towed vehicle. The towed vehicle's own brake pedal actuates the brakes of the towed vehicle and the brake pedal is actuated by a cable mechanically and releasably attached to the brake pedal. The cable is itself fixedly attached to a cable attachment means which is part of a body. In turn, the body is connected to the towing vehicle through a towing implement in the form of a tow bar. When the towing vehicle decelerates, the inertia of the towed vehicle causes the mounting bars to apply pressure against a lower part of the body, this is countered by the tow bar, connected on an upper part of the body, which has for effect to make the body rotate around its axis which is situated in a middle part of the body. This results in the lower part being moved forward which pulls on the cable, which in turn pulls on the brake pedal.

Abstract: Electropneumatic control valve for a pneumatic brake system of a vehicle, having a divided valve housing consisting of a lower relay valve housing and an upper pilot valve housing which enclose a control chamber in which an axially adjustable control piston is guided. The piston can be acted upon by way of a pilot valve arrangement accommodated in the pilot valve housing in order to switch the compressed-air flow between at least one brake line connection arranged on the relay valve housing, a supply pressure connection and as a bleeder connection by way of an interior valve seat arrangement. A control connection of a back-up valve of the pilot valve arrangement is also arranged on the relay valve housing, and by way of a valve-internal pressure medium duct is connected with the back-up magnetic valve accommodated in the pilot valve housing. Internal pressure medium ducts are arranged and sealed in a manner that allows the pilot valve housing to be produced without machining.

Abstract: In a friction brake arrangement with emergency braking functions for use with a carriage supported on a guide track, with a friction clamping structure including a friction shoe supported in a housing so as to be disposed adjacent the guide track, a spring element is provided biasing the friction shoe toward the guide track for frictional engagement therewith and also a power operated drive for disengaging the friction shoe from the guide track against the force of the spring element and, furthermore, a blocking member is disposed between the drive means and the spring element and held electromagnetically in the blocking position so that the spring is released and the carriage is locked to the guide track for example upon occurrence of a power outage.

Abstract: In a negative pressure boosting device of the present invention, upon depression of a pedal at a normal speed, an input shaft 11 and a valve plunger 10 move forward to close a vacuum valve 15 and open an atmospheric valve 16 and a power piston 5, a valve body 4, and an output shaft 24 move forward. In the initial stage of operation, hooks 27c and 31a are not engaged with each other so that a cylindrical member 27 does not move forward, thereby shortening the stroke of the input shaft 11 as compared to a conventional one. Upon rapid depression of the pedal, a press face 10a presses a pressed face 27e so as to deform an engaging arm portion 27b, thereby disengaging the hooks 27c and 31a from each other. The cylindrical member 27 is moved backward by a spring 30 to push a vacuum valve portion 12b so that the atmospheric valve portion 12a is spaced apart from the atmospheric valve seat 14 more rapidly than that of the service braking, thereby increasing the jumping amount and thus rapidly intensifying the output.

Abstract: A braking system for a vehicle is described, including a hydraulic service braking system and an electric service braking system having wheel brakes, to which braking pressure is applied when a brake pedal is operated. To maintain essentially constant vehicle braking behavior during a change in the braking-force distribution between the hydraulic and the electric service braking systems, it is proposed to provide a control unit, which is capable of varying the braking-force distribution and to equip the hydraulic service braking system with a braking pressure modulator that is controlled by the control unit and is able to effect a variable braking-force distribution as a function of the control by the control unit.

Abstract: The invention relates to a control method for controlling a resetting system of a disc brake provided with a brake caliper, involving the following steps: 1. in order to determine the actual play of the disc brake, the brake disc is displaced back and forth with the resetting devices located on each side of the brake disc between two axial stops that delimit the displacement path of the brake disc, and the covered actual displacement path is determined; 2. the actual play is calculated and adjusted based on a comparison of the actual displacement path with a pre-stored displacement path calibration value and with a set play. The invention also relates to a brake disc assembly provided with a brake disc that, when mounted on the cams of the hub, can be displaced between stops.

Abstract: In a vacuum booster in which a reaction force mechanism is interposed between an input rod and a valve cylinder connected integrally with a booster piston, and an output rod, a valve piston is fitted onto an input piston connecting the input rod and the reaction force mechanism to be slidably movable forward from a predetermined retreat position with respect to the input piston, the valve piston is biased to the retreat position by a set spring, and locking device is provided between the valve piston and the valve cylinder to lock the valve piston at the valve cylinder thereby holding an atmosphere introduction valve seat in an open state at the time of emergency braking when the input piston moves forward by a predetermined number of strokes ahead of the valve cylinder. Thus, while a delay in atmosphere introduction into the operating chamber is eliminated irrespective of normal braking or emergency braking, the output is allowed to reach a servo limit point earlier and held at the time of emergency braking.

Abstract: In a method for determining the state of a motor vehicle brake, particularly the brake-lining state or the brake-lining thickness, a temperature sensor is arranged in the brake lining of the motor vehicle brake, and the temperature detected by the sensor is used to determine the brake state. In addition to a first temperature value, at least one second temperature value detected after the first temperature value and the time duration between the detection time points of the two temperature values are employed. The brake state is determined based on an evaluation of a time profile of temperature values sensed by said sensor.

Abstract: A sensing device for sensing an amount of force transferred between a first element and a second element includes a first attachment structure and a second attachment structure mounted to the first attachment structure to enable relative linear movement between the first and second attachment structures. The first attachment structure is connected to the first element and the second attachment structure is connected to the second element. An actuating member is provided on one of the first and second attachment structures. A biasing structure is positioned between the first and second attachment structures enabling a force to be transferred from the first element and the first attachment structure to the second element and the second attachment structure. A sensor includes a first switch and a second switch each being adapted to be actuated by the actuating member.

Abstract: A hydraulic brake apparatus includes a brake master cylinder having a rod piston moving in response to a brake pedal; a separation valve provided in a hydraulic brake circuit in order to establish and shut off communication between the brake master cylinder and the brake wheel cylinders; a pressure control valve unit for controlling fluid pressure to be supplied from an external fluid-pressure supply source to the brake wheel cylinders while the separation valve is in a shutoff condition; and a stroke simulator mechanism for allowing an idle stroke of the rod piston so as to ensure a stroke of the brake pedal in accordance with an input load to the brake pedal. An orifice is provided in a passage which establishes, during the idle stroke of the rod piston, communication between a pressure chamber and an atmospheric pressure chamber which are defined within the brake master cylinder by means of the rod piston.

Abstract: This brake hydraulic control actuator increases ability to reserve the leaked brake fluid and degree of freedom for the structural layout in the actuator body. The bottom surface of the actuator body (10) having the cylinder bores (43) of the low pressure reservoirs (40) and (41) thereon is closed and sealed by the pot plate (20), and the pocket (23), which projects toward the direction to depart from the bottom surface, is formed in the pot plate (20).