US 12,320,437 B2
Pressure relief valve assembly, modular pressure relief valve assembly, and hydraulic control assembly having such a pressure relief valve assembly
Hakan Camurdan, Neu-Ulm (DE); and Karthikeyan Maharajan, Tamil Nadu (IN)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Aug. 30, 2023, as Appl. No. 18/458,366.
Claims priority of application No. 10 2022 210 469.2 (DE), filed on Oct. 4, 2022.
Prior Publication US 2024/0110633 A1, Apr. 4, 2024
Int. Cl. F16K 17/04 (2006.01); F15B 13/02 (2006.01); F15B 13/04 (2006.01); F16K 15/18 (2006.01); F16K 17/06 (2006.01); F16K 17/10 (2006.01)
CPC F16K 17/048 (2013.01) [F15B 13/024 (2013.01); F15B 13/0401 (2013.01); F16K 15/1826 (2021.08); F16K 17/06 (2013.01); F16K 17/105 (2013.01); F16K 2200/501 (2021.08)] 15 Claims
OG exemplary drawing
 
1. A pressure relief valve assembly comprising:
a pressure relief valve comprising:
a valve bushing received in a valve bore of a housing bore;
a valve body biased against a valve seat by a spring that is guided in said valve bushing, the valve body including a first control surface subjected, in an opening direction, to a pressure to be limited, and a second control surface subjected to a control pressure in the opening direction,
wherein an axial support of the valve bushing in the housing bore is provided by a fixing device disposed on the valve bushing,
wherein the valve bushing has a radially protruding sealing collar which sealingly sits against a peripheral wall of the housing bore and which seals an annular chamber carrying the pressure to be limited against an annular control chamber carrying the control pressure, and
wherein both the annular chamber and the annular control chamber are delimited in a radial direction, at least in sections, on one side by the housing bore and on another side by the valve body.