Title:
【発明の名称】高圧噴射のための燃料噴射弁
Document Type and Number:
Japanese Patent JP2002533607
Kind Code:
A
Abstract:
An improved fuel injection valve for a high-pressure injection of fuel from a central high-pressure line into combustion chambers of an internal combustion engine, which has an injection valve with a valve seat, a valve ball, and a guide piece that guides the valve ball. The guide piece presses the valve ball against the valve seat in order to close the injection control valve and during the opening, subjects the valve ball to an initial stress of a spring. During the opening, the valve ball is lifted up from the valve seat by means of a high-pressure jet which is supplied via an outlet throttle bore by a control chamber that is operatively connected with a central high-pressure line. A diffuser is disposed between the valve seat and the outlet throttle bore, and the outlet throttle bore, the diffuser, and the valve seat have the approximate shape of a steep-walled funnel with a right-angled to acute-angled cone angle.
Inventors:
Lorenz Betz
Application Number:
JP2000589826A
Publication Date:
October 08, 2002
Filing Date:
December 08, 1999
Export Citation:
Assignee:
ROBERT BOSCH GMBH
International Classes:
F02M47/02; F02M47/00; F02M59/46; (IPC1-7): F02M47/00
Attorney, Agent or Firm:
Toshio Yano (4 outside)