Patent · US Expired

Oil pressure control valve by sliding camshaft for an internal combustion engine

US6807936B1 · kind B1 · utility

3Cited by

0References

6Claims

0Family size

Assignee

MTD PRODUCTS INC · US

Inventors

Wolf Burger · Eppelheim, DE
Eberhard Wizgall · Stuttgart, DE
Jan Schempp · Sinzing, DE
Reinhard Kasperbauer · Erbach, DE

Key dates

Filing date	May 15, 2003
Grant date	Oct 26, 2004
Priority date	—
Expiry date	May 15, 2023

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01M1/16
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention pertains to an internal combustion engine with a crankcase, a crankshaft and a camshaft for controlling at least one intake and exhaust valve, as well as an oil pump for delivering lubricating oil to the crankshaft. Downstream on the outlet side of the oil pump is an oil pressure regulating valve for limiting the oil pressure. The valve gate, which is contacted by a spring element in the closing direction, depending on the amount of oil delivered and/or the oil temperature, the valve gate frees an opening that can be connected with the inlet side of the oil pump. It is suggested that the camshaft be seated in longitudinally displaceable fashion within the crankcase and form the valve gate of the oil pressure control valve. An oil pressure-limiting valve for an internal combustion engine is thus implemented in a simple way.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.