Title:
内燃機関に用いられる燃料噴射弁
Document Type and Number:
Japanese Patent JP4126047
Kind Code:
B2
Abstract:
A fuel injection valve, having a valve body that contains a bore whose combustion chamber end is delimited by a valve seat from which at least two injection openings lead. The bore contains outer and inner concentric valve needles whose ends oriented toward the combustion chamber each open and close the injection openings. A pressure chamber between the outer valve needle and the valve body bore can be filled with fuel. The inner valve needle is guided in a longitudinal bore of the outer needle by first and second sections between which an annular chamber is formed, which is delimited by the inner valve needle and the wall of the longitudinal bore. A throttle connection is capable of connecting the annular chamber to the pressure chamber and the diameter of the first guide section is greater than the diameter of the second guide section.
Inventors:
Thomas cuegra
Jochen Mertens
Hajiman Uskudar
Jochen Mertens
Hajiman Uskudar
Application Number:
JP2004569833A
Publication Date:
July 30, 2008
Filing Date:
October 06, 2003
Export Citation:
Assignee:
ROBERT BOSCH GMBH
International Classes:
F02M61/10; F02M45/08; F02M61/12; F02M61/18; F02M63/00
Domestic Patent References:
| JP53113924A | ||||
| JP61135979A | ||||
| JP53113925A | ||||
| JP60125767A | ||||
| JP6307309A |
Foreign References:
| WO2002048536A1 |
Attorney, Agent or Firm:
Toshio Yano
Einzel Felix-Reinhard
Reinhard Einsel
Einzel Felix-Reinhard
Reinhard Einsel