Patent ID: 9228667
Filing Date: 2016-01-05
CPC Classification: F02M,F16K,Y10T

Claim Text:
1. A pressure-limiting valve, comprising a valve support ( 10 ), a valve insert ( 12 ) which is connected to the valve support ( 10 ), a valve piston ( 14 ) which is mounted such that the valve piston can slide in the valve insert ( 12 ) in a guide bore ( 13 ) and a closing spring ( 16 ) which acts on the valve piston ( 14 ) with a closing force in a closing direction, and the valve piston ( 14 ) acts on a valve seat ( 18 ) by means of the closing force, said valve seat producing a hydraulic connection via a valve chamber ( 40 ) between a high-pressure space ( 33 ) and a low-pressure space ( 36 ), as soon as a hydraulic force which acts on the valve piston ( 14 ) in an opening direction exceeds the closing force of the closing spring ( 16 ), wherein a leakage gap ( 50 ) is formed between the valve chamber ( 40 ) and the low-pressure space ( 36 ) when the valve seat ( 18 ) is closed, wherein the leakage gap ( 50 ) enables leakage to be discharged out of the valve chamber ( 40 ) into the low-pressure space ( 36 ), wherein the leakage gap ( 50 ) is formed by a first leakage connection ( 51 ) on a valve chamber side of the pressure-limiting valve and a second leakage connection ( 52 ) on a low-pressure side of the pressure-limiting valve, wherein the first leakage connection ( 51 ) is formed by a radial relief groove ( 44 ), and wherein the second leakage connection ( 52 ) is formed by an axial relief channel ( 46 ) which connects the radial relief groove ( 44 ) to the low-pressure space ( 36 ).