Patent · US Expired

Operating arrangement for a gas change valve of an internal engine combustion engine

US5943988A · kind A · utility

6Cited by

5References

10Claims

0Family size

Assignee

Daimlerchrysler AG · US

Inventors

Dieter Burger · Leinfelden, DE
Ulrich Letsche · Stuttgart, DE
Jurgen Schule · Adelberg, DE

Key dates

Filing date	Jun 12, 1998
Grant date	Aug 31, 1999
Priority date	—
Expiry date	Jun 12, 2018

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L9/10
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In an operating arrangement for a gas change valve of an internal combustion engine including an electromagnetic structure having an armature which is connected to the valve and which forms an operating piston disposed in a cylinder for reciprocating movement therein between an upper end position in which the valve is closed and a lower end position in which the valve is open, at least a first electromagnet is arranged adjacent the lower end position of the armature for retaining the armature when the electromagnet is energized, a spring is provided for biasing the valve to a closed position and electro-pneumatic means are provided for supplying gas under pressure to an operating chamber at one side of the piston for actuating the piston in a valve opening direction.

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