Patent · US Active

Valve train for internal combustion engines for actuating gas exchange valves

US8596238B2 · kind B2 · utility

3Cited by

5References

6Claims

0Family size

Assignee

IAV GmbH Ingenieurgesellschaft Auto und Verkehr · DE

Inventors

Andreas Werler · Zwickau, DE
Thomas Arnold · Winslow, US
Heiko Neukirchner · Chemnitz, DE
Joerg Wutzler · Zwickau, DE

Key dates

Filing date	Aug 3, 2010
Grant date	Dec 3, 2013
Priority date	—
Expiry date	Nov 29, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49293
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A valve train includes a a plurality of individual cam sleeves axially displaceable relative to one another and disposed so as to form the camshaft, each of the plurality of individual cam sleeves including a plurality of different cam profiles each having a same base circle portion and being configured to engage, by switching, one of a plurality of gas exchange valves. A switching shaft is disposed inside the plurality of cam sleeves and configured to rotate together with the plurality of cam sleeves. An encircling switching contour is disposed inside each of the plurality of cam sleeves. A switching pin operatively connects one of the plurality of cam sleeves to the switching shaft, the switching pin configured to slide in the encircling switching contour. An actuator is operatively connected to the switching shaft so as to rotate the switching shaft relative to the plurality of cam sleeves.

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