Patent · US Active

Bypass valve for internal combustion engines

US7757873B2 · kind B2 · utility

8Cited by

12References

8Claims

0Family size

Assignee

PIERBURG GMBH · DE

Inventors

Michael Thiery · Korschenbroich, DE
Dietmar Miemczyk · Mülheim an der Ruhr, DE
Harald Krause · Hattingen, DE

Key dates

Filing date	Sep 8, 2006
Grant date	Jul 20, 2010
Priority date	—
Expiry date	Jun 5, 2028

Classification

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

Abstract

The invention describes a bypass valve (1) that can be used as a divert air valve. Bypass valves (1) that work in the closed or opened position in a force-balanced or pressure-balanced manner are known. During the opening of the bypass valve (1), a lower pressure is produced in a gap (25) between a valve closing body (3) and a valve seat (20), which pressure destroys the force balance and thus loads a movable valve unit (2) in the closing direction. In order to prevent this, according to the invention pressure equalization openings (24) are embodied or arranged with respect to the gap (25) in such a way that a reduced pressure is introduced into the chambers (7, 8) in the interior of the valve, so that the closing-operative force is distinctly reduced. By these means, the opening times of such a bypass valve can be distinctly reduced.

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