Patent · US Expired

Fuel injection system for an internal combustion engine

US5526790A · kind A · utility

5Cited by

11References

3Claims

0Family size

Assignee

Mercedes-Benz Group AG · DE

Inventors

Ulrich Augustin · Weingarten, DE
Volker Schwarz · Waiblingen, DE
Hermann Hiereth · Eßlingen, DE

Key dates

Filing date	Mar 27, 1995
Grant date	Jun 18, 1996
Priority date	—
Expiry date	Mar 27, 2015

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2250/31
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In a fuel injection system for an internal combustion engine having a high-pressure pump supplying fuel from a low pressure fuel supply conduit connected to the pump to a common high pressure fuel supply conduit for the injectors of the internal combustion engine via a high-pressure conduit extending between the high pressure pump and the common fuel supply conduit, the high-pressure conduit includes a non-return valve which, at the same time, is operable electromagnetically so as to be capable of maintaining the non-return valve open beyond the high-pressure pump delivery stroke for the release of fuel from the common fuel supply conduit under the control of the pump plunger and for rapid pressure relief by keeping the non-return valve open beyond a point at which the plunger opens the low-pressure fuel supply conduit connected to the pump.

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