Patent · US Expired

Fuel injection valve with integrated spark plug

US5983855A · kind A · utility

86Cited by

5References

11Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Walter Benedikt
Franz Rieger · Aalen, DE
Rainer Norgauer · Stuttgart, DE
Christian Preussner · Markgröningen, DE

Key dates

Filing date	May 7, 1998
Grant date	Nov 16, 1999
Priority date	—
Expiry date	May 7, 2018

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/507
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fuel injection valve includes a valve needle passing through the valve opening to the valve closing body arranged on the spray outlet end. A closing spring prestresses the valve needle in a direction opposite its opening direction aimed in the direction of spraying, so that the valve closing body is in contact with the valve seat on the spray outlet end when the fuel injection valve is closed. The armature is kept engaged and in contact with the valve needle by means of a bearing spring which acts in the direction of opening by means of a connecting piece arranged between the armature and the valve needle. The connecting piece includes a suitable insulation element for providing insulation against high voltage.

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