Patent · US Active

Fuel injection valve

US9441590B2 · kind B2 · utility

0Cited by

7References

3Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Wilhelm Christ · Michelbach an der Bilz, DE
Gerhard Suenderhauf · Tiefenbronn, DE
Michael Leukart · Stuttgart, DE
Katja Grothe · Stuttgart, DE

Key dates

Filing date	Jul 19, 2010
Grant date	Sep 13, 2016
Priority date	—
Expiry date	Oct 15, 2032

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M61/1886
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a fuel injection valve for injecting fuel into a combustion chamber of an internal combustion engine, having a nozzle needle (1) which is guided, such that it can perform a stroke movement, in a central bore (2) of a nozzle body (3) in order to open up or close off at least one injection opening (4), wherein the nozzle needle (1) interacts, by means of an encircling sealing region (5) formed on the combustion-chamber-side end thereof, with a sealing seat (6) that runs conically and is formed on the combustion-chamber-side end of the nozzle body (3). According to the invention, the sealing seat (6) that runs conically has an opening angle (α1) of between 30° and 50°, preferably of between 40° and 50°.

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