Injector for a fluid

Patent metadata

Field	Value
Publication number	US-9091237-B2
Application number	US-201013519128-A
Country	US
Kind code	B2
Filing date	Nov 4, 2010
Priority date	Dec 29, 2009
Publication date	Jul 28, 2015
Grant date	Jul 28, 2015

Abstract

An injector for a fluid, particularly for fuel, is provided having a valve housing, a fluid intake, a valve chamber having a spray-discharge orifice, a piezoelectric or magnetostrictive actuator situated in the valve housing and a fluid-guiding pipe connecting a fluid intake and a valve chamber, which is situated in the valve housing running along the actuator. In order to create structural space in the valve housing for guiding through the fluid-guiding pipe which has a sufficiently large diameter for reducing pressure drops in the intake region, a hollow cylinder surrounding the actuator and developed as a prestressed spring is provided with a cylinder wall opening that extends axially through the entire length, and the positioning of the fluid-guiding pipe in the valve housing is undertaken so that it extends radially into the cylinder wall opening.

First claim

What is claimed is:

1. An injector for a fluid, comprising:
a valve housing;
a fluid intake;
a valve chamber having a spray-discharge orifice;
one of a piezoelectric or magnetostrictive actuator situated in the valve housing;
a fluid-guiding pipe connecting the fluid intake and the valve chamber, the fluid-guiding pipe being situated in the valve housing running along an actuator; and
a hollow cylinder surrounding the actuator, the hollow cylinder, as a prestressed sprin…

Assignees

• Schmieder Dietmar
• Jakobi Andreas
• Bosch Gmbh Robert

Inventors

• Schmieder Dietmar
• Jakobi Andreas

Classifications

• H01L41/12

  Electricity · mapped topic

• F02M51/0603 Primary

  Mechanical Engineering · mapped topic

• F16F1/028

  Mechanical Engineering · mapped topic

• H01L41/083

  Electricity · mapped topic

• F02M2200/26

  Mechanical Engineering · mapped topic