Patent · US Active

Displacement groove contour of sliding cam assemblies of an internal combustion reciprocating piston engine

US8683967B2 · kind B2 · utility

0Cited by

0References

10Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Ronny Gunnel · Puschendorf, DE
Linda Funke · Herzogenaurach, DE
Steffen Hein · Erbach, DE

Key dates

Filing date	Jun 27, 2012
Grant date	Apr 1, 2014
Priority date	—
Expiry date	Aug 18, 2032

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2013/0052
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Engine with a crank mechanism and a cylinder head whose intake and exhaust channels are regulated by gas exchange valves activated by cams of at least one camshaft. The cams are sliding cams with at least one cam per sliding cam assembly arranged rotationally fixed but axially displaceable on a base shaft, and each having an actuator with an actuator pin for displacing the sliding cam assemblies into different axial positions via at least one displacement groove which cooperates with the pin. The displacement groove being helical shaped and having a run-in and a run-out region for the pin and a displacement flank and an opposing support flank. A detent device locks the sliding cam assemblies in different axial positions. A distance between the displacement flank and the support flank remains constant along the entire extent of the displacement groove parallel to the displacement direction of the sliding cam assembly.

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