Patent · US Expired

Internal combustion engine with hydraulic device for adjusting the rotation angle of a camshaft in relation to a crankshaft

US6964250B2 · kind B2 · utility

8Cited by

1References

17Claims

0Family size

Assignee

Ina Schaeffler KG · DE

Inventors

Ulrich Wierl · Mendorf, DE
Mike Kohrs · Wilthen, DE
Rainer Ottersbach · Bonn, DE
Jochen Auchter · Weisendorf, DE

Key dates

Filing date	Dec 15, 2004
Grant date	Nov 15, 2005
Priority date	—
Expiry date	Dec 15, 2024

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L1/3442
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A hydraulic device in an internal combustion engine for adjusting a rotation angle of a camshaft in relation to a crankshaft includes a tubular stator and a rotor connected in fixed rotative engagement with the camshaft and having plural vanes in spaced apart relationship to define pressure chambers on both sides of the vanes. The stator is connected in fixed rotative engagement with a crankshaft-drive timing pulley and formed in single-piece construction with an end wall to thereby exhibit a pot-shaped structure. The pot is made without material removal from a sheet metal part and constructed to define with the rotor vanes the pressure chambers. Pressure medium is supplied to or purged from the pressure chambers to selectively adjust the position of the rotor in relation to the stator and thereby the position of the camshaft in relation to the crankshaft.

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