Patent · US Expired

Fuel injection system for an internal combustion engine

US4243002A · kind A · utility

5Cited by

8References

7Claims

0Family size

Assignee

Audi NSU Auto Union Aktiengesellschaft · DE

Inventors

Erwin Freyer · Neckarsulm, DE
Johannes Steinwart · Löwenstein, DE
Peter Will · Gomaringen, DE

Key dates

Filing date	Jun 15, 1978
Grant date	Jan 6, 1981
Priority date	—
Expiry date	Jun 15, 1998

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S261/19
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fuel injection system for an internal combustion engine includes an air suction pipe, a throttle valve located in the pipe, and a member, upstream of the throttle valve, which is actuatable by air flowing through the suction pipe so as to move a piston valve to dose a quantity of fuel to a fuel injection nozzle. The system includes a duct which bypasses the throttle valve, the duct having a valve which closes the duct when the throttle valve is closed and when the engine is above the idling speed. Dosing of fuel is thereby stopped during coasting of a vehicle, leading to decreased fuel consumption.

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