Patent · US Expired

Valve control arrangement

US4671221A · kind A · utility

46Cited by

5References

18Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Bernhard Geringer · Deizisau, DE
Ernst Linder · Mühlacker, DE
Helmut Rembold · Stuttgart, DE
Manfred Ruoff · Heubach, DE

Key dates

Filing date	Dec 12, 1985
Grant date	Jun 9, 1987
Priority date	—
Expiry date	Dec 12, 2005

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2001/34446
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A valve control arrangement for internal combustion engines with reciprocating pistons, comprises a housing having a housing opening, a valve piston axially displaceable in the housing opening, a valve closing spring, a valve plunger on which the valve piston acts against the valve closing spring, a cam piston axially displaceable in the housing opening, a valve control cam, a pressing spring which presses the cam piston against the valve control cam, a working chamber formed between the valve piston and the cam piston and arranged to be filled with pressure medium which transmits a lifting movement of the cam piston to the valve piston, the pressing spring which acts on the cam piston being arranged outside of the working chamber and supported at the side of the housing.

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