Patent · US Active

Exhaust gas recirculating valve for an internal combustion engine

US9016265B2 · kind B2 · utility

0Cited by

4References

8Claims

0Family size

Assignee

PIERBURG GMBH · DE

Inventors

Stefan Vitt · Grevenbroich, DE
Osman Sari · Grevenbroich, DE
Gerard Dietz · Utrecht, NL

Key dates

Filing date	Aug 3, 2011
Grant date	Apr 28, 2015
Priority date	—
Expiry date	Feb 19, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An exhaust gas recirculation valve for an internal combustion engine includes a housing comprising an exhaust gas inlet and an exhaust gas outlet, and a valve closing body fastened to a valve rod. The valve rod is movable. A valve seat is arranged between the exhaust gas inlet and the exhaust gas outlet. A guide bushing comprising a first section guides the valve rod in the housing. A sealing ring is arranged at an end of the guide bushing remote from the valve closing body. The valve closing body is lowered onto the valve seat by a movement of the valve rod and lifted from the valve closing body by an opposite movement of the valve rod. A circumferential gap is formed between the valve rod and the guide bushing in the first section of the guide bushing directed toward the sealing ring.

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