Patent · US Expired

Internal combustion engine adjustable valve gear

US5253620A · kind A · utility

7Cited by

6References

5Claims

0Family size

Assignee

Mercedes-Benz Group AG · DE

Inventors

Michael Dohn · Sersheim, DE
Karl Zeilinger · Winnenden, DE

Key dates

Filing date	Mar 2, 1993
Grant date	Oct 19, 1993
Priority date	—
Expiry date	Mar 2, 2013

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02F7/006
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An adjustable valve gear is provided for two lift-type intake valves per cylinder in an internal combustion engine which are actuated by the cams of a camshaft via rocker arms with variable support and a rocker cam. In order to make possible different lift curves for the two lift-type intake valves, each lift type intake valve is assigned a separate rocker cam. At least one of the curve joints assigned to a lift-type intake valve and establishing the connections between a cam and a rocker arm, between the rocker arm and its support and between a rocker cam and the lift-type intake valve are configured with a different shape or a rotated installation position relative to a curve joint assigned to the other lift-type intake valve.

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