Patent · US Expired

Injection device, more particularly for direct-injection diesel engines

US4595144A · kind A · utility

10Cited by

5References

14Claims

0Family size

Assignee

Deutsche Forschungs- und Versuchsanstalt fur Luft- und Raumfahrt e.V. · DE

Inventors

Herbert Wiegand · Marburg, DE
Klaus Bäumer · Kreuztal, DE

Key dates

Filing date	Nov 3, 1983
Grant date	Jun 17, 1986
Priority date	—
Expiry date	Nov 3, 2003

Classification

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

Abstract

The injection device has a nozzle body with a needle valve controlled by id. At the front end of the nozzle body there are, in the case of a single hole nozzle, one injection channel and in the case of a multi-hole nozzle, several injection channels which may be at any angle to each other. In the narrowest cross section of the injection channel suction slots lead into the combustion chamber. Air is drawn in from the combustion chamber by the jet of fuel leaving the injection channel. This air mixes with the fuel in the narrowest cross section of the injection channel so that, at the base of the injection jet, there is a two-phase flow having particularly favorable properties for the subsequent mixture formation.

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