Patent · US Expired

Device for changing the opening and closing times of the gas-exchange valves in an internal-combustion engine

US5970930A · kind A · utility

4Cited by

2References

13Claims

0Family size

Assignee

INA Wälzlager Schaeffler oHG · DE

Inventors

Martin Scheidt · Höchstadt an der Aisch, DE
Dieter Goppelt · Herzogenaurach, DE
Stefan Hess · Erlangen, DE

Key dates

Filing date	Apr 3, 1998
Grant date	Oct 26, 1999
Priority date	—
Expiry date	Apr 3, 2018

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L1/34406
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In a device (1) for varying the opening and closing times of gas exchange valves of an internal combustion engine, an undesired start rattling occurring during the starting operation of the internal combustion engine due to an abutment of an adjusting piston (7) against its end position is to be prevented. For this purpose, the invention provides a coupling means (21) which connects a drive unit (4) and a driven unit (11) during the starting operation of the internal combustion engine.

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