Patent · US Expired

Fuel injection valve

US6814314B1 · kind B1 · utility

0Cited by

10References

16Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Wolfgang Ruehle · Ditzingen, DE
Hubert Stier · Asperg, DE
Matthias Boee · Ludwigsburg, DE
Guenther Hohl · Stuttgart, DE
Norbert Keim · Besigheim, DE

Key dates

Filing date	Sep 6, 2001
Grant date	Nov 9, 2004
Priority date	—
Expiry date	Jul 10, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/304
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fuel injection valve, in particular an injection valve for fuel injection systems of internal combustion engines, is made of a piezoelectric or magnetostrictive actuator and a valve closing body that can be set in motion by the actuator via a valve needle and that interacts with a valve seat surface to produce a seat. To compensate for the temperature expansion, at least one damping element made of a solid is present and exhibits an almost static behavior at a high deformation rate and is elastically or plastically deformable at a low deformation rate.

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