Patent · US Active

Mechanically controllable valve drive

US10851683B2 · kind B2 · utility

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0References

2Claims

0Family size

Assignee

PIERBURG GMBH · DE

Inventors

Michael Breuer · Rottenburg am Neckar, DE
Karsten Grimm · Aachen, DE
Stephan Schmitt · Munich, DE
Sabine Siebrandt · Viersen, DE

Key dates

Filing date	Apr 30, 2015
Grant date	Dec 1, 2020
Priority date	—
Expiry date	Jan 1, 2038

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2305/00
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A valve drive includes a transfer arrangement with an intermediate lever arrangement having a first roller element and an intermediate lever, and a drag lever arrangement having a drag lever. The first roller element is connected to a circumferential contour of a camshaft. The intermediate lever includes a second roller element and a working curve connected to the drag lever. A slotted guide is provided for the intermediate lever arrangement which is engaged by a guide roller element. A torsion spring element with first and second ends engages the intermediate lever arrangement. The first end rests on the cylinder housing portion. The second end acts on a counter bearing rigidly connected with the intermediate lever. The first and second roller element axes are arranged to introduce a force into the intermediate lever which presses the guide roller element against the slotted guide and the first roller element against the camshaft.

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