Patent · US Active

Camshaft for a variable lift valve train of an internal combustion engine

US8161930B2 · kind B2 · utility

8Cited by

1References

8Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Harald Elendt · Meckenheim, DE
Andreas Nendel · Prüm, DE

Key dates

Filing date	Nov 2, 2009
Grant date	Apr 24, 2012
Priority date	—
Expiry date	Oct 22, 2030

Classification

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

Abstract

A camshaft (1) is provided for a stroke-variable valve drive of an internal combustion engine with a carrier shaft (2) and a cam part (3) that is arranged locked in rotation and movable in the axial direction on the carrier shaft and that is assembled from a cam carrier (4) and a sleeve (5). The cam carrier has a cam group (7, 8) of directly adjacent cams (9, 10, 11, 12) with different cam strokes and an adapter end (6) on which the sleeve is mounted. The sleeve has a setting groove (17) in the form of a groove that extends across an extent of the sleeve and that is used for the specification of an axial setting groove track for an activation pin (18) moving the cam part on the carrier shaft. The setting groove is produced in the sleeve through non-metal-cutting shaping of sheet-metal material.

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