Patent · US Active

Tubular camshaft with integrated oil separator

US8657907B2 · kind B2 · utility

1Cited by

3References

14Claims

0Family size

Assignee

THYSSENKRUPP PRESTA TECCENTER AG · LI

Inventors

Juergen Meusel · Kitzscher, DE
Ulf Mueller · Schwieberdingen, DE

Key dates

Filing date	Feb 23, 2011
Grant date	Feb 25, 2014
Priority date	—
Expiry date	Mar 19, 2031

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01M2013/0422
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A cam shaft has a tubular part extending longitudinally along an axis and a helical body fixed in the tubular part and having a first helical passage extending between an inlet end where a first pressure is present and an outlet end where a second pressure is present. This helical body forms an oil separator between the inlet and outlet ends. A flow-blocking element at the inlet end moves as a function of a pressure differential between the first and second pressures to open and close the first helical passage.

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