Pressure accumulator of a hydraulic actuating system

Inactive Publication Date: 2013-10-03
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a hydraulic actuating system with a pressure accumulator that is easy to manufacture and install without risking parts confusion. The spring supporting element is made using the deep drawing process, which is cost-effective and prevents mixing up with the piston. The design of the supporting element is also simple, as it has a short axial length.

Problems solved by technology

The result is a cost effective supporting element that also cannot be mixed up with the piston, which is designed as the steel bushing, owing to the short design of the supporting element in terms of its axial extension.

Method used

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  • Pressure accumulator of a hydraulic actuating system
  • Pressure accumulator of a hydraulic actuating system

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Embodiment Construction

[0014]At the outset, it should be appreciated that like drawing numbers on different drawing views identify identical, or functionally similar, structural elements of the invention. While the present invention is described with respect to what is presently considered to be the preferred aspects, it is to be understood that the invention as claimed is not limited to the disclosed aspects.

[0015]Furthermore, it is understood that this invention is not limited to the particular methodology, materials and modifications described and, as such, may, of course, vary. It is also understood that the terminology used herein is for the purpose of describing particular aspects only, and is not intended to limit the scope of the present invention, which is limited only by the appended claims.

[0016]Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood to one of ordinary skill in the art to which this invention belongs. Although any me...

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Abstract

A hydraulic actuating system is proposed in particular for gas exchange valves of reciprocating-piston internal combustion engines having a pressure source for the hydraulic medium and having at least one pressure accumulator, which can be connected to the pressure source; and has a piston which can be displaced in a drilled hole, a compression spring and a supporting element, for the compression spring with a central opening (3), which supporting element is fixed by a spring ring wherein the supporting element is configured as a spring supporting plate (1), the axial extension of which is considerably shorter than that of the piston.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is the U.S. national stage application filed pursuant to 35 U.S.C. 365(c) and 120 as a continuation of International Patent Application No. PCT / EP2011 / 061470 filed Jul. 7, 2011 and claiming priority from German Patent Application No. 10 2010 052 550.2 filed Nov. 25, 2010, which applications are incorporated herein by reference in their entireties.FIELD OF THE INVENTION[0002]The invention relates to a hydraulic actuating system that is configured, in particular, for gas exchange valves of reciprocating-piston internal combustion engines and that has a pressure source for the hydraulic medium and has at least one pressure accumulator, which can be connected to the pressure source, and said pressure accumulator has a piston that can be displaced in a drilled hole, a compression spring and a supporting element, which is fixed by means of a spring ring and is designed for the compression spring, with a central opening.BACKGROU...

Claims

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Application Information

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IPC IPC(8): F01L1/02F01L9/14
CPCF01L9/025F15B1/04F01L1/02F15B2201/31F15B2201/21F01L9/14
InventorRINNERT, ANDREASSEEGER, ROBERT
OwnerSCHAEFFLER TECH AG & CO KG