Patent · US Expired

Control valve for use in a reservoir injection system for a diesel engine

US6283154A · kind A · utility

3Cited by

8References

6Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Reda Rizk · Recklinghausen, DE
Ulrich Augustin · Weingarten, DE
Raimondo Giavi · Munich, DE

Key dates

Filing date	Feb 28, 2000
Grant date	Sep 4, 2001
Priority date	—
Expiry date	Feb 28, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/86944
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A control valve contains a housing with an inlet connection, an outlet connection and a return connection. A first seat valve with a first valve body and a second seat valve with a second valve body are disposed in the housing. The first seat valve is disposed between the outlet connection and the return connection and is normally closed and the second seat valve is disposed between the inlet connection and the outlet connection and is normally open. The second valve body is disposed coaxially in the first valve body.

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