Electronically controllable pneumatic braking system in a commercial vehicle and method for electronically controlling a pneumatic braking system in a commercial vehicle
An electronic control, pneumatic braking technology, applied in the direction of brake transmission, brakes, vehicle parts, etc., can solve the problems of increasing assembly cost and cost, difficult to retrofit, etc., and achieve the effect of saving cost
Active Publication Date: 2021-09-03
WABCO EURO BVBA SPRL
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Problems solved by technology
The disadvantage of all these solutions is that the additional pneumatic components increase the assembly effort and costs and are also very difficult to retrofit
Method used
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Embodiment Construction
[0052] in accordance with Figure 1a and Figure 1b In the embodiment of the present invention, a section of an electropneumatic braking system 100a of a vehicle 200, in particular a commercial vehicle, is shown as a block diagram, wherein the electropneumatic braking system is implemented as an EBS braking system 100a, that is to say brake pre-braking Set to be electrically grounded in normal operation. For this purpose, EBS braking system 100 a has four wheel brakes 1 , 2 , 3 , 4 which are used to slow down wheels 5 , 6 , 7 , 8 of vehicle 200 . For deceleration, three brake circuits A, B, C are provided, each of which is assigned a pressure medium reservoir 20A, 20B, 20C in order to supply the respective brake circuit A, B, C with pressure medium and thus be able to A build-up of brake pressures p1 , p2 , p3 , p4 , pPB for the respective wheel brakes 1 , 2 , 3 , 4 is achieved. In each pressure medium accumulator 20A, 20B, 20C there is a corresponding reserve pressure pVA, ...
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The invention relates to an electronically controllable pneumatic braking system (100a) in a vehicle (200) having at least: - wheel brakes ( 1, 2, 3, 4), wherein the wheel brakes (1, 2, 3, 4) can be preset for driving through the pneumatic passages (X1, X2, X3, X4) starting from the foot brake valve (11) respectively. Brake pressure (p1, p2, p3, p4), - and at least one electronically controllable monostable bypass valve (16; 16.1, 16.2), wherein at least one monostable bypass valve (16 ; 16.1, 16.2) are arranged in at least one pneumatic passage (X1, X2, X3, X4), and at least one monostable bypass valve (16) has two switching positions (Z1, Z2), - wherein, in In the first switching position (Z1) of the monostable bypass valve (16; 16.1, 16.2), the respective pneumatic pressure can be preset depending on the operating pressure (pF) generated by manually operating the foot brake valve (11). Service brake pressures (p1, p2, p3, p4) in channels (X1, X2, X3, X4). It is provided according to the invention that in the second switching position of the monostable bypass valve (16; 16.1, 16.2), it is possible to rely on the reserve pressure (pVA) in the pressure medium accumulator (20A, 20B, 20C) , pVB, pVC) to preset service brake pressures (p1, p2, p3, p4), where service brake pressures (p1, p2, p3, p4) can be switched by switching monostable bypass valves ( 16; 16.1, 16.2) depending solely on the operating pressure (pF) and / or depending on the reserve pressure (pVA, pVB, pVC) to form electropneumatic redundancy.
Description
technical field [0001] The invention relates to an electronically controllable pneumatic braking system in a commercial vehicle and to a method for electronically controlling a pneumatic braking system. Background technique [0002] In vehicles with a pneumatic brake system, in particular commercial vehicles, the control unit (ECU) can electronically actuate the axle modulators assigned to the axles in order to control the brake pressure. In this case, the electronic control takes place either as a function of the driver's intention preset via the foot brake valve or as a function of an automatically preset target deceleration of the vehicle. The axle modulator then pneumatically generates the corresponding service brake pressure, which is regulated on the brake cylinders of the service brakes of the braking system. [0003] Alternatively, the axle modulator can also be actuated pneumatically in that a service brake control pressure corresponding to the driver's will is pre...
Claims
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IPC IPC(8): B60T13/68B60T13/66
CPCB60T13/683B60T13/662
Inventor 奥利弗·伍尔夫
Owner WABCO EURO BVBA SPRL