Patent · US Active

Multi-fuel injector for an internal combustion engine, method for operating a multi-fuel injector and internal combustion engine

US10570861B2 · kind B2 · utility

1Cited by

0References

10Claims

0Family size

Assignee

MTU FRIEDRICHSHAFEN GMBH · DE

Inventors

Joachim Schwarte · Tettnang, DE
Samuel Vogel · Bad Waldsee, DE
Robby Gerbeth · Friedrichshafen, DE

Key dates

Filing date	Apr 13, 2017
Grant date	Feb 25, 2020
Priority date	—
Expiry date	May 5, 2037

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/30
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In a multi-fuel injector for an internal combustion engine, including a housing with a nozzle needle movably disposed therein between a closed position in which the nozzle needle blocks a discharge of fuel from a collection chamber, to which a first fuel is supplied, above the nozzle needle, a control chamber is arranged to which a high pressure second fuel is supplied which acts on the nozzle needle to bias it into a closed position, and a control valve is provided in a pressure release line extending from the control chamber for a controlled release of the second fuel from the control chamber by opening the control valve so as to relief the closing pressure on the nozzle needle in order to permit lifting of the nozzle needle from the closed position for discharging the fuel from the collection chamber.

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