Patent · US Active

Spring arrangement for a variable valve drive of an internal combustion engine

US9784142B2 · kind B2 · utility

0Cited by

2References

8Claims

0Family size

Assignee

PIERBURG GMBH · DE

Inventors

Karsten Grimm · Aachen, DE
Martin Nowak · Leverkusen, DE
Christoph Sadowski · Sprockhövel, DE
Sabine Siebrandt · Viersen, DE

Key dates

Filing date	Apr 4, 2014
Grant date	Oct 10, 2017
Priority date	—
Expiry date	Apr 19, 2034

Classification

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

Abstract

A spring arrangement for a variable valve drive of an internal combustion engine includes an intermediate lever, a control shaft, a control shaft roller, a working cam contour, and a spring element. The intermediate lever comprises a contact surface, a camshaft roller which bears against a camshaft, and a slot roller which bears against a slotted guide. The control shaft roller is arranged on the intermediate lever to face away from the slotted guide. The control shaft roller bears against the control shaft. The working cam contour is formed at an end of the intermediate lever opposite the camshaft roller. The spring element comprises a force component on the contact surface in the direction of the camshaft and the slotted guide, and an end leg. The spring element loads the camshaft roller against the camshaft and the slot roller against the slotted guide. The end leg bears against the contact surface.

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