摘要:
A sealing member for a piston slidably disposed within the cylinder bore of a hydraulic system includes a seal body having an outer sealing surface arranged to contact the cylinder bore and a glide ring at least partially disposed within the outer sealing surface of the seal body. The glide ring includes an outer surface and the outer sealing surface of the seal body includes at least one seal lip projecting beyond the outer surface of the glide ring.
摘要:
A system for use in a vehicle with a brake pedal and a brake circuit. The system includes a master cylinder assembly configured to pressurize fluid therein in response to movement of the brake pedal, a sensor assembly configured to generate a pedal position signal indicative of position of the brake pedal, an electronic control unit configured to (i) generate a brake request signal in response to generation of the pedal position signal, and (ii) generate a selector control signal, and a selector valve assembly being moved from a first mode to a second mode in response to generation of the selector control signal, the master cylinder assembly is (i) isolated from fluid communication with the brake circuit when the selector valve assembly is positioned in the first mode, and (ii) in fluid communication with the brake circuit when the selector valve assembly is positioned in the second mode.
摘要:
An actuator comprising a housing defining an interior cavity for a motor assembly including a rotatable motor pinion and a stator, a gear assembly including a plurality of rotatable gears, and a sensor assembly including a substrate. The motor pinion includes a yoke, a motor magnet surrounding the yoke, and a sensor magnet. In one embodiment, the second gear is located between and coupled to both the motor pinion and the first gear. Each of the motor pinion and the plurality of gears is mounted for rotation on respective shafts. In one embodiment, each of the shafts includes a stop that limits the axial travel of the motor pinion and the plurality of gears. The motor pinion and the plurality of gears are positioned in the housing in a longitudinal, co-linear, and side-by-side coupling and meshed relationship.
摘要:
A system for use in a vehicle with a brake pedal and a brake circuit which includes a master cylinder assembly, a sensor assembly configured to generate a pedal position signal indicative of position of the brake pedal, an electronic control unit configured to (i) generate a brake request signal in response to generation of the pedal position signal, and (ii) generate a selector control signal, and a selector valve assembly operable in a first mode and a second mode, the selector valve assembly being moved from the first mode to the second mode in response to generation of the selector control signal, the master cylinder assembly is (i) isolated from fluid communication with the brake circuit when the selector valve assembly is positioned in the first mode, and (ii) in fluid communication with the brake circuit when the selector valve assembly is positioned in the second mode.
摘要:
A supply valve (40), a relief valve (42) and a microprocessor (46) control the supply of pressurized hydraulic fluid from a dedicated pressure source (12) to a brake boost piston (18, 60, 108) interposed between an operator brake pedal (22) input member (20, 106) and a master cylinder. Transducers (48, 50, 102) sense a current relationship between the input member (20, 106) and the boost piston (18, 60, 108) and supply the microprocessor (46) with a input to accordingly operate the supply valve (40) and relief valve (42). In one embodiment, a single transducer (102) senses relative motion between the input member and the piston while in a second embodiment, a single transducer (48) senses the force exerted on the piston by the input member and a third embodiment first and second transducers (48, 50) to sense relative motion between the input member and the piston.
摘要:
A braking system with an electric hydraulic booster includes a booster chamber, a booster piston activating chamber, a booster piston located between the booster chamber and the booster activating chamber, and a solenoid valve operably connected to a high pressure source, the booster chamber, and the booster piston activating chamber, the solenoid movable between (i) a first position whereat the booster chamber and the booster piston activating chamber are in fluid communication and fluidly isolated from the high pressure source, (ii) a second position whereat the booster chamber and the booster piston activating chamber are fluidly isolated from each other and from the high pressure source, and (iii) a third position whereat the booster piston activating chamber and the high pressure source are in fluid communication and fluidly isolated from the booster chamber.
摘要:
A fast fill braking system includes a master cylinder, a primary pressure chamber having a first chamber portion located forwardly of a second chamber portion, the first chamber portion having a diameter larger than a diameter of the second chamber portion, and a primary piston including a first piston portion positioned within the primary pressure chamber and a second piston portion extending out of the primary pressure chamber, the first piston portion having a diameter (i) larger than a diameter of the second piston portion, and (ii) complementary to the diameter of the second chamber portion.
摘要:
A kickdown assembly for a pedal assembly including a pedal. In one embodiment, the kickdown assembly a leaf spring kickdown element including a base, a first arm which extends from a first end of the base and defines a recess, and a second arm which extends from a second end of the base and includes a distal end seated in the recess of the first arm and adapted to transfer a resistance force to the pedal when the second arm of the kickdown element contacts the pedal. The resistance force is overcome by the application of a kickdown or step force against the pedal which is greater than the resistance force and causes the distal end of the second arm of the kickdown element to spring out of the recess defined in the first arm of the kickdown element.