Patent · US Expired

Fuel injection valve for internal combustion engines

US5803370A · kind A · utility

24Cited by

6References

20Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Rudolf Heinz · Renningen, DE
Roger Potschin · Brackenheim, DE
Friedrich Boecking · Stuttgart, DE

Key dates

Filing date	Dec 6, 1996
Grant date	Sep 8, 1998
Priority date	—
Expiry date	Dec 6, 2016

Classification

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

Abstract

The invention sets forth a fuel injection valve for internal combustion engines, which includes a valve member, axially displaceably guided in a valve body. The valve member includes a sealing face on an end toward a combustion chamber which cooperates with a valve seat face provided on the valve body in order to control an injection port. The injection port communicates on an end remote from the combustion chamber with a final control element for actuating the valve member. The injection valve has a hydraulic damping device which when stoppage of the valve member in an intermediate position between contact with the valve seat and the maximum opening stroke is controlled by the piezoelectric final control element keeps the valve member in that stroke position.

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