Patent · US Expired

Fuel-injection valve

US5335864A · kind A · utility

17Cited by

5References

4Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Peter Romann · Stuttgart, DE
Ferdinand Reiter · Markgröningen, DE
Martin Maier · Asperg, DE

Key dates

Filing date	Mar 17, 1993
Grant date	Aug 9, 1994
Priority date	—
Expiry date	Mar 17, 2013

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M61/1853
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fuel-injection valve having a metallic perforated disc arranged on a valve-seat body downstream of a valve-seat. The perforated disc arranged on the valve-seat body is supported by a supporting disc which is provided with a passage orifice and which is thicker than the perforated disc. This effectively prevents an undesirable bending of the perforated disc and at the same time improves the fuel treatment at the spray orifices. The supporting disc is made pot-shaped and is welded, together with the perforated disc, to the valve-seat body by a continuous welding seam. The fuel-injection valve is used in fuel-injection systems of mixture-compressing spark-ignition internal-combustion engines.

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