摘要:
The invention relates to a brake actuator unit for activating a motor vehicle braking system of the "brake-by-wire" type having a brake booster (1) that can be actuated by both a brake pedal (4) as well as by an electronic control unit according to the requests of the driver, having a piston rod (7; 32), a primary brake cylinder (2) downstream of the brake booster (1), means for registering a request of the driver to decelerate (6) and a pedal path simulator (5) connected in parallel to the piston rod and interacting with the brake pedal (4) by means of which a restoring force effective on the brake pedal (4) can be simulated in the "brake-by-wire" operating mode independently of an actuation of the brake booster (1), wherein there is a distance a between the brake pedal (4) or a component allocated to the brake pedal (4) and a component allocated to the brake booster (1) downstream in the flow of force to decouple a force-transmitting connection between the brake pedal (4) and the brake booster (1) in the "brake-by-wire" operating mode, in order to decouple the brake pedal (4) in the "brake-by-wire" operating mode from reaction forces of the motor vehicle braking system and wherein there are means (9) for automatic reduction of the distance a outside of the "brake-by-wire" operating mode. According to the invention, the means (9) for automatic reduction of the distance a are arranged on the brake pedal (4).
摘要:
The invention relates to a "brake-by-wire" type braking system for a motor vehicle, comprising a brake pressure transducer which can be actuated by means of a brake pedal of a pedal unit and can be connected to wheel brakes of the vehicle outside of the "brake-by-wire" operating mode, comprising a pressure source which can be controlled by means of an electronic control unit and can be connected to the wheel brakes of the vehicle in the "brake-by-wire" operating mode, comprising means for detecting a deceleration request of a driver, and further comprising a pedal travel simulator which interacts with the brake pedal and is formed by at least one simulator element and by means of which a restoring force acting on the brake pedal in the "brake-by-wire" operating mode can be simulated independently of the control of the pressure source. In order to provide a simpler and more cost-effective "brake-by-wire" type braking system, according to the invention a force-distance characteristic of the pedal travel simulator 2 is controllable.
摘要:
The invention relates to a servo brake for a motor vehicle brake system of the 'brake by wire' type, which can be activated by means of a brake pedal and by means of an electronic controller depending on the driver's input, and independently of the driver's input, wherein the coupling of the brake pedal, or of a servo part firmly connected to the brake pedal is configured on an input member of the servo brake such that a limited relative motion of the brake pedal, or of the servo part firmly connected to the brake pedal, is possible in relation to the input member, thus ensuring a decoupling of the servo connection between the brake pedal, or the servo part firmly connected to the brake pedal, particularly in the 'brake by wire' operating mode. In order to minimize the friction occurring with the activation of the servo brake between the servo part and the input member, the invention provides that the servo part (10) firmly connected to the brake pedal (4), and/or the input member (7) of the servo brake is/are equipped with means in the region of the relative motion of the two parts (10, 7, or 8), wherein the means reduce friction created with the relative motion of the parts (10, 7, or 8) to each other.
摘要:
The invention relates to a brake actuating unit for actuating a motor vehicle brake system of the brake by wire type, comprised of: a) a brake booster, which can be actuated according to the driver's wishes both by means of a brake pedal as well as by means of an electronic control unit, whereby means are provided for decoupling a force-transferring connection between the brake pedal and the brake booster in the brake by wire operating mode; b) a master cylinder connected downstream from the brake booster; c) means for detecting the driver's wish to slow down, and; d) a pedal travel simulator, which interacts with the brake pedal and with which, in the brake by wire operating mode, a restoring force acting upon the brake pedal can be simulated independent of an actuation of the brake booster, and which, in the brake by wire operating mode, can be switched on when decoupling the force-transferring connection between the brake pedal and the brake booster and can be switched off when the brake by wire operating mode is not active. According to the invention, the switching on and off of the pedal travel simulator (2) is effected by electromagnetic (22, 25), electrohydraulic (40, 47) or pneumatically actuatable means (96 98).
摘要:
In order to increase the operating safety of a unit (10) used in a brake system of the 'brake by wire' type for switching a pedal path simulator (5) on and off, a joint connection is provided according to the invention between a piston (22) and a piston rod (21) which actuates said piston. Said joint connection allows the piston rod (21) to swivel in all directions.
摘要:
The invention relates to a brake-actuation unit for the actuation of a motor vehicle brake system of the type “brake-by-wire,” which consists of a brake servo which can be actuated according to the driver's wishes by means of a brake pedal set on a shaft as well as by means of an electronic control unit, wherein methods of decoupling of a power-transferring connection between the brake pedal and the brake servo in the “brake-by-wire” mode of operation are planned, and includes methods for registering a driver's wish to decelerate, as well as for a pedal travel simulator that works with the brake pedal, which is made by means of a simulator spring, which is arranged action-oriented between a power-transferring part connected to the brake pedal and a simulator housing, which by means of two bearings is lying on the shaft. According to the invention, it is planned that the simulator housing (22) has a cylindrical area (26) to accommodate the two bearings (27, 28). By means of this method, the distortions which appear in the actuation of the pedal travel simulator can be significantly reduced.
摘要:
The invention relates to an adjustable pedal device comprising at least two pedals (1, 23), the initial position of which is adjustable. In a previously known pedal device, an actuator is rotatably articulated to the brake pedal lever while the lever is rotatable about a third shaft (A). Said design has the disadvantage that a second pedal, particularly a gas pedal, cannot be simultaneously adjusted according to said principle because the forces acting upon the individual pedals are not effective in the same direction. The invention relates to a pedal device which has a simple design and in which the initial position of said two pedals can be adjusted in a substantially uniform manner, the two pedals (1, 23) being mounted within a twistable support (3) while being rotated about shafts (B, D) that are offset one relative to the other.