Patent · US Expired

Electromagnetically actuated fuel injection valve

US5516047A · kind A · utility

26Cited by

9References

13Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Hans Kubach · Ditzingen, DE
Guenter Dantes · Eberdingen, DE
Karlheinz Schultheiss · Weinsberg, DE

Key dates

Filing date	Aug 24, 1994
Grant date	May 14, 1996
Priority date	—
Expiry date	Aug 24, 2014

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M61/165
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An electromagnetically actuated fuel injection valve for a fuel injection system of an internal combustion engine includes a valve housing, a magnet coil, and a valve needle. When the magnet coil is excited, the valve needle lifts off from its valve seat and allows fuel to pass. Downstream after the valve seat of the valve needle, two annular peripheral knife-edges face one another to generate one or more conical fuel lamellae extending in substantially laminar fashion. An annular metering gap is formed by the two knife-edges located close together such that the lower annular peripheral edge of the metering gap includes a stationary spray plate or a valve needle end piece.

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