Patent · US Expired

Device for variable activation of valves for internal combustion engines

US7107949B2 · kind B2 · utility

0Cited by

5References

8Claims

0Family size

Assignee

IAV GmbH Ingenieurgesellschaft Auto und Verkehr · DE

Inventors

Andreas Werler · Zwickau, DE
Michael Seidel · Wauwatosa, US
Heiko Neukirchner · Chemnitz, DE
Lutz Stiegler · Radeberg, DE

Key dates

Filing date	Mar 19, 2004
Grant date	Sep 19, 2006
Priority date	—
Expiry date	Jan 29, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/2107
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A device for variable activation of valves for internal combustion engines, which is arranged in a cylinder head having a camshaft mounted in a fixed location with valves that close by means of spring force through a stroke transfer arrangement. This device includes a movable element mounted with a fixed pivot, and has a support cam and a control cam. An intermediate member is displaceably mounted and supported on the element, and is in engagement with a cam lever of the camshaft, as well as the stroke transfer arrangement. The intermediate member supports itself on the support cam and control cam with a non-positive lock, sliding during the stroke movement. Whereby the control cam determines the stroke movement to be transferred to the stroke transfer arrangement by the intermediate member, as a function of the pivot position of the element that can change its position.

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