Brake modulator with multi-interface cover plate
OwnerAdam Lango, Leszek Tomainventors
Life of this patent
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Abstract
A brake modulator (1) for providing an ABS brake function to a vehicle (200) includes a main body (17), a first ABS valve unit (47) configured to provide a first brake pressure (pB1) and a second ABS valve unit (53) configured to provide a second brake pressure (pB2), and a main cover (19) for closing of an assembly side (27) of the main body (17). The cover portions (127, 131, 133, 135) for covering corresponding valve cavities (33, 35, 37, 39) are formed separately from a main cover plate (20) of the main cover (19). A relay valve cover plate (137) is formed integrally with or separately from the main cover plate (20). The present disclosure further relates to a commercial vehicle (202) and to an assembly method (300) for a brake modulator (1).
Claims20
A brake modulator (1) for providing an ABS brake function to a vehicle (200), the brake modulator (1) comprising:
- a main body (17) having a first supply valve cavity (33), a second supply valve cavity (35), a first exhaust valve cavity (37), a second exhaust valve cavity (39), and a relay valve cylinder (31) having a main cylinder axis (A), wherein the first supply valve cavity (33), the second supply valve cavity (35), the first exhaust valve cavity (37), the second exhaust valve cavity (39) and the relay valve cylinder (31) open towards an assembly side (27) of the main body (17);
- a supply port (5) for receiving supply pressure (pS),
- a relay valve (45) configured to receive the supply pressure (pS) and to provide main pressure (pM) dependent on a brake request or driver's brake demand, wherein the relay valve (45) is received in the relay valve cylinder (31),
- an ABS valve arrangement comprising a first ABS valve unit (47) for a first brake channel (7) and a second ABS valve unit (53) for a second brake channel (11),
- wherein the first ABS valve unit (47) is configured to receive the main pressure (pM) and to provide first brake pressure (pB1) to the first brake channel (7) dependent on a first ABS control signal (SC1), wherein a first ABS supply valve (49) of the first ABS valve unit (47) is received in the first supply valve cavity (33), and a first ABS exhaust valve (51) of the first ABS valve unit (47) is received in the first exhaust valve cavity (37), and
- wherein the second ABS valve unit (53) is configured to receive the main pressure (pM) and to provide second brake pressure (pB2) to the second brake channel (11) dependent on a second ABS control signal (SC2), wherein a second ABS supply valve (55) of the second ABS valve unit (53) is received in the second supply valve cavity (35), and a second ABS exhaust valve of the second ABS valve unit (53) is received in the second exhaust valve cavity (39), and
- a main cover (19) that closes the assembly side (27) of the main body (17),
- wherein the main cover (19) includes a first supply cover portion (127) for the first supply valve cavity (33), a second supply cover portion (133) for the second supply valve cavity (35), a first exhaust cover portion (131) for the first exhaust valve cavity (37), and a second exhaust cover portion (135) for the second exhaust valve cavity (39),
- wherein the brake modulator (1) further comprises a relay valve cover plate (137) that closes the relay valve cylinder (31) on the assembly side (27), wherein the relay valve cover plate (137), wherein the relay valve cover plate (137) is arranged between a relay piston (63) of the relay valve (45) received in the relay valve cylinder (31) and the main cover (19) along the main cylinder axis (A), and
- wherein one or more cover portions (127, 131, 133, 135) of the first supply cover portion (127), the second supply cover portion (133), the first exhaust cover portion (131) and the second exhaust cover portion (135) is formed separately from a main cover plate (20) of the main cover (19).
Dependencies are inferred from the claim text.