Brake valve, compressed-air brake system having the brake valve, and method for producing the brake valve
A technology for compressing air and braking systems, applied in the direction of braking control systems, ABS control systems, control valves and air release valves, etc.
Active Publication Date: 2020-05-29
WABCO GMBH
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Problems solved by technology
Cost savings can be achieved by omitting the brake pressure sensor for ABS pre-pressure, but still with high safety
Method used
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Embodiment Construction
[0034] exist figure 1 A compressed air brake system 1 of a commercial vehicle 7 with a brake circuit 22 is shown; usually a plurality of brake circuits 22 are provided. The driver actuates the brake pedal 2 and thereby actuates the brake valve 3 , which receives compressed air at the system pressure p0 from the compressed air store 4 via its compressed air input 3 a and sends via its compressed air output 3 b The compressed air is routed to the brake pressure control line 5 . Thus, depending on the actuation of the brake pedal 2 by the driver, the simulated brake valve output pressure p1 is connected to the brake pressure control line 5 via the brake valve 3 . According to the embodiment shown, the simulated brake valve output pressure p1 is supplied to the brake circuit 22 via the connecting valve device 10 which is open in the basic position and which is designed here as the only connecting valve. 10 and is configured as a 3 / 2 solenoid valve. Activation valve 10 is used f...
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The invention relates to a brake valve (3) for a compressed air brake system (1), wherein the brake valve (3) can be activated by a brake pedal and is provided for the output of an analogue brake valve output pressure (p1) and / or useful electric sensor signals (S1a, S1b), wherein the brake valve (3) has a compressed air inlet (3a) for connection to a system pressure (p0), a compressed air outlet (3b) for connection of a brake control line (5), and at least one sensor (18a, 18b) for determining a brake valve actuating travel (BSW) of an actuating element (6) of the brake valve (3). According tothe invention, the brake valve (3) has a characteristic curve memory device (21) and at least one determination device (20a, 20b), and the brake valve (3) is provided for the output of at least two useful sensor signals (S1a, S1b), wherein a first useful sensor signal (S1a) represents the brake valve output pressure (p1) and a second useful sensor signal (S1b) represents a percentage actuating position of the actuating element (6), and the at least one sensor (18a, 18b) is designed to generate an actuating signal (S5a, S5b), and the at least one determination device (20a, 20b) is designed togenerate the at least two useful sensor signals (S1a, S1b) from the at least one actuating signal (S1a, S5b), depending on the at least two characteristic curves (KLa, KLb) and / or dependencies storedin the characteristic curve memory (21).
Description
technical field [0001] The invention relates to a brake valve, a compressed air brake system with a brake valve and a method for producing or calibrating a brake valve. Background technique [0002] Various systems are known in compressed air braking systems for commercial vehicles in order to transmit a braking request input by the driver via his brake pedal to the wheel brakes. In a simulated compressed air brake system, the brake valve is actuated by the brake pedal via an actuating element (for example, a joystick adjusted by the brake pedal), the brake valve is connected to the reserve pressure or the system pressure, and depends on the location of the actuation The simulated brake valve output pressure is transmitted to the brake circuit of the compressed air brake system via the brake pressure control line. Thus, a simulated brake valve output pressure is generated directly by the brake pedal actuation, which is then forwarded to the wheels, for example via a relay v...
Claims
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IPC IPC(8): B60T8/32B60T15/14
CPCB60T8/327B60T15/14B60T13/683B60T2270/10B60T2270/413
Inventor 托尔斯滕·瓦尔鲍姆马尔特·贝罗特阿恩德·高尔克
Owner WABCO GMBH