Patent · US Expired

Fuel injection valve

US4927084A · kind A · utility

17Cited by

8References

17Claims

0Family size

Assignee

Atlas Fahrzeugtechnik GmbH · DE

Inventors

Burkhard Brandner · Werdohl, DE
Klaus Wenzlik · Iserlohn, DE

Key dates

Filing date	Dec 28, 1988
Grant date	May 22, 1990
Priority date	—
Expiry date	Dec 28, 2008

Classification

Technology area (CPC H)Electricity
CPC primaryH10N30/2047
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fuel injection valve wherein a reciprocable valving element is movable from closed to open position by a piezoceramic moving unit having at least two flexural resonators in the form of laminated packages of metallic carriers, ceramic layers and foil-shaped and/or ring-shaped conductors connected to the poles of an energy source in such a way that energization entails deformation of packages in opposite directions, namely the deformed packages have confronting concave or convex sides. This increases the distance which is covered by the valving element in response to energization of the packages.

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