Patent · US Expired

Adjusting cylinder of a camshaft adjusting device acted upon by a separate oil supply unit

US5915348A · kind A · utility

11Cited by

11References

11Claims

0Family size

Assignee

INA Wälzlager Schaeffler oHG · DE

Inventors

Martin Scheidt · Höchstadt an der Aisch, DE
Andreas Strauss · Forchheim, DE

Key dates

Filing date	Oct 8, 1997
Grant date	Jun 29, 1999
Priority date	—
Expiry date	Oct 8, 2017

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2001/34446
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A device provided on a internal combustion piston engine for changing the rotational relations between at least one camshaft (5) and a crankshaft (6) includes a hydraulic cylinder (4). This hydraulic cylinder (4) is acted upon by a supply unit (7, 14) which displaces gas cushions in the hydraulic cylinder (4) when the internal combustion piston engine is at a standstill and replaces the gas cushions with hydraulic cylinder, especially motor oil.

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