Patent · US Active

Injector for a fluid

US9091237B2 · kind B2 · utility

0Cited by

1References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Dietmar Schmieder · Markgröningen, DE
Andreas Jakobi · Stuttgart, DE

Key dates

Filing date	Nov 4, 2010
Grant date	Jul 28, 2015
Priority date	—
Expiry date	Sep 22, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH10N35/00
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

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.

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