Patent · US Expired

Gas-injection valve for internal combustion engine

US5383647A · kind A · utility

11Cited by

4References

6Claims

0Family size

Assignee

Daimler-Benz AG · DE

Inventors

Rainer Werner Jorach · Waiblingen, DE
Klaus Binder · Munich, DE
Shoichi Furuhama · Setagaya, JP

Key dates

Filing date	Mar 17, 1994
Grant date	Jan 24, 1995
Priority date	—
Expiry date	Mar 17, 2014

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S123/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A gas-injection valve for injecting gaseous fuel into the combustion chamber of an internal combustion engine, comprising a valve housing and, disposed therein, a longitudinally displaceable piston having connected thereto a poppet valve for controlling an injection port, which poppet valve opens in the direction of gas flow, said piston separating a gas space from an operating space adapted to be pressurized by having hydraulic control fluid fed thereto by a pressure pump, and the gas pressure within the gas space alone being sufficient to move the poppet valve to and to hold it in its closed position when the operating space is depressurized.

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