Patent ID: 8454323
Filing Date: 2013-06-04
Classification: F01M,F04C,Y10T

Abstract:
1. Lubricant valve for oil pumps of internal combustion engines, with a pump housing ( 1 ) with bearing points ( 2 ), an impeller set ( 4 ) of an oil pump driven by a drive shaft ( 3 ) mounted in the bearing points ( 2 ), with a pressure kidney ( 5 ) disposed in the pressure region of the pump housing ( 1 ), with a pressure connection channel ( 6 ) disposed on the pump housing ( 1 ), with a valve seat ( 7 ) disposed on the pump housing ( 1 ), a pressure channel ( 8 ) disposed between the valve seat ( 7 ) and the pressure connection channel ( 6 ), a control channel ( 9 ) disposed between the valve seat ( 7 ) and a gallery, and an overflow channel ( 10 ) disposed between the valve seat ( 7 ) and an oil pan, with a double piston ( 12 ) disposed in a piston guide ( 11 ) of the valve seat ( 7 ) in the pump housing ( 1 ), with an outer regulation piston ( 13 ), in which an inner piston guide for an inner piston is disposed, wherein a piston rod ( 17 ) with at least one working piston ( 18 ) is disposed on the regulation piston, beyond which the piston rod ( 17 ) projects in the form of a spacer rod ( 19 ), wherein inflow bores ( 20 ) are disposed in the piston crown ( 16 ) of the regulation piston ( 13 ), and outflow bores ( 22 ) are disposed in the region of the inner piston guide in the cylinder wall ( 21 ) of the regulation piston ( 13 ), wherein the inner piston guide disposed in the regulation piston ( the inflow bores ( the cold-start piston ( a biased pressure spring (