Title:
【発明の名称】内燃機関用の燃料噴射弁
Document Type and Number:
Japanese Patent JP2002535537
Kind Code:
A
Abstract:
A fuel injection valve for internal combustion engines with a valve member that is guided so that the valve member can move axially in a bore of the valve body. The valve member, on an end oriented toward the combustion chamber of the engine, has a conical valve sealing surface with which the valve member cooperates with a conical valve seat surface at the closed, combustion chamber end of the bore of the valve member. The conical valve sealing surface on the valve member is divided into two regions that have different cone angles, at the transition of which a transition region is formed. The transition region is delimited by an upstream and a downstream valve sealing edge, where the difference between the cone angle of the transition region and the cone angle of the valve sealing surface is smaller than the difference between the cone angle of the downstream region and the cone angle of the valve sealing surface (inverse seat angle differential). The transition region is adjoined on the upstream side by a radial recess, which is embodied in the valve member and is delimited by the upstream sealing edge of the transition region and an edge embodied on the valve body.
Inventors:
Christoph Buehler
Application Number:
JP2000593859A
Publication Date:
October 22, 2002
Filing Date:
November 24, 1999
Export Citation:
Assignee:
ROBERT BOSCH GMBH
International Classes:
F02M61/10; F02M61/16; F02M61/18; F02M63/00; (IPC1-7): F02M61/18; F02M61/10; F02M61/16
Domestic Patent References:
| JPH0158770U | 1989-04-12 | |||
| JPS297656B1 | ||||
| JPH03182682A | 1991-08-08 | |||
| JPH09189278A | 1997-07-22 | |||
| JPS6058868U | 1985-04-24 | |||
| JPS60169664A | 1985-09-03 |
Attorney, Agent or Firm:
Toshio Yano (4 outside)