摘要:
First and second reaction force simulator pistons 18, 20 move downward due to a hydraulic pressure that is generated inside a simulator hydraulic fluid chamber 15 by a simulator operation piston being operated by an input of an input shaft 4. At this time, due to urging forces of first and second reaction force simulator springs 19, 21, the hydraulic pressure inside the hydraulic fluid chamber 15 is a hydraulic pressure based on the input, and this hydraulic pressure is transmitted to the input shaft 4 via the simulator operation piston 14, as a reaction force. Due to the downward movement of the second reaction force simulator piston 20, a sliding resistance applying member deformation operation portion 20a of the second reaction force simulator piston presses and deforms a reaction force simulator piston sliding resistance applying member 29. Thus, sliding resistance that changes in accordance with operation of the second reaction force simulator piston 20 is applied to the second reaction force simulator piston 20.
摘要:
The subject of the invention is a master cylinder mounted primary piston (20) comprising at least one primary piston and one secondary piston mounted in the bore of the master cylinder. These pistons allow a pressure to be created. The primary piston (20) with a body (21) made of moulded plastic is fitted with a functional metal insert (22) and the said insert has the shape of a spherical cap (30) capable of accepting a push rod.
摘要:
Master cylinder having a body equipped with a bore housing at least one piston operated by the driver. The piston, which forms a slide valve, separates the feed chamber connected to the brake fluid reservoir from a pressure chamber connected to the brake circuits. The feed chamber is bordered by a groove (152) accommodating a seal (180) separating it from the outside, with respect to the surface of the piston (130). The seal (180) has a cross section in the shape of a lying-down U, one leg (181) of which is pressed against the closed end (152a) of the groove (152) and its two adjacent wall (152b, 152c), the other leg (182) providing sealing by pressing against the piston (130). The end (184) of at least one of the two legs (181, 182) has a flat surface intended to press against the side (152c) of the groove (152).
摘要:
In a brake system for motor vehicles, having a master brake cylinder (4) which can be actuated by means of a brake pedal (19) and to which wheel brakes (6, 7, 8, 9) are connected, having an electrically controllable pressure generating device (2), having a pressure regulating valve arrangement (5) for regulating and/or controlling a wheel brake pressure induced at a wheel brake (6, 7, 8, 9), and having a first electronic control and regulating unit (10) which controls or regulates the pressure generating device (2) and/or the pressure regulating valve arrangement (5), it is sought to a provide brake force assistance means which is independent of the functioning of the pressure generating device. For this purpose, said brake system comprises an electrically controllable auxiliary pressure generating device (60) by means of which the master brake cylinder (4) can be actuated, in particular by means of which a pressure in an intermediate chamber (61) of the master brake cylinder (4) can be controlled or regulated.
摘要:
A vehicle brake system includes a brake pedal unit (BPU) coupled to a vehicle brake pedal and including an input piston connected to operate a pedal simulator during a normal braking mode, and coupled to actuate a pair of output pistons during a manual push through mode. The output pistons are operable to generate brake actuating pressure at first and second outputs of the BPU. A hydraulic pressure source for supplying fluid at a controlled boost pressure is included. The system further includes a hydraulic control unit (HCU) adapted to be hydraulically connected to the BPU and the hydraulic pressure source, the HCU including a slip control valve arrangement, and a switching base brake valve arrangement for switching the brake system between the normal braking mode wherein boost pressure from the pressure source is supplied to first and second vehicle brakes, and the manual push through mode wherein brake actuating pressure from the BPU is supplied to the first and second vehicle brakes.
摘要:
A master cylinder has a body formed from a seamless cylindrical tube. Bosses are welded to an exterior sidewall portion of the tube and have passages communicating with the interior bore. An end cap closes one bore end and includes a passageway for supplying pressurized hydraulic fluid from the bore to individual wheel brake cylinders. The mating reservoir includes a pair of downwardly depending legs for attachment. A pair of bolts extend from a vacuum booster, pass through the reservoir mounting bolt apertures and engage the end cap of the body securing the resulting assembly to the vehicle.
摘要:
L'invention concerne un système de simulation de sensation de freinage pour installation de freinage de véhicule comprenant un système de freinage automatique et/ou un système de freinage mixte hydraulique/électrique. Ce système comporte un réservoir de stockage (4) connecté par une canalisation (30) et par une vanne de simulation (3) au circuit hydraulique de freinage (8).
摘要:
L'invention concerne un maître cylindre de frein comportant un corps de maître cylindre en deux parties: - une première partie (1) contenant un fourreau (3) muni d'un alésage formant des chambres de pression primaire (17) et secondaire (18) et dans lesquelles coulissent des pistons primaire et secondaire (60, 61), - une deuxième partie (2) servant de bouchon de fermeture pour le maître cylindre et étant fixé à ladite première partie (1). Applications: Maître cylindre de freins automobiles.