Patent · US Expired

Fuel injection system

US4359990A · kind A · utility

4Cited by

3References

7Claims

0Family size

Assignee

Audi NSU Auto Union Aktiengesellschaft · DE

Inventors

Gunter Kromer · Heilbronn, DE
Armin Bauder · Neckarsulm, DE
Gerhard Maurhoff

Key dates

Filing date	Jan 24, 1980
Grant date	Nov 23, 1982
Priority date	—
Expiry date	Jan 24, 2000

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M69/386
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A continuous fuel injection system for an internal combustion engine including a fuel metering valve 7 operating at a controlled pressure difference between chambers 13,14, the pressure difference being automatically adjusted by a regulating valve 17 including a diaphragm 18 separating two chambers 19,20. Chamber 20 is connected to relief 60 via a movable valve element 35 and the second chamber 19 is connected to the pressure upstream of the metering valve. The pressure difference is determined by a spring system acting on the diaphragm 18 including a stronger spring 33 which acts directly on the diaphragm and a weaker spring 34 which acts as a contact spring holding the valve body 35 lightly in contact with the diaphragm.

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