Title:
【発明の名称】内燃機関に用いられる燃料噴射ノズル
Document Type and Number:
Japanese Patent JP2974707
Kind Code:
B2
Abstract:
A fuel injection nozzle for internal combustion engines has a nozzle body (10) fastened to a nozzle holder (13) by an intermediate disk (11), a valve needle (14) which slides in the nozzle body (10), an intermediate bushing (24) which slides axially in the intermediate disk (11) and a closing spring arrangement consisting of two helical pressure springs arranged one behind the other in a spring chamber (19) in the nozzle body (10). The total stroke of the valve needle (14) executed against the closing spring arrangement is divided into a clearance stroke and a residual stroke by limit stops (25, 28) and counter limit stops (26, 27) on the intermediate bushing (24), intermediate disk (11) and valve needle (14). To obtain a short closing spring arrangement and hence an injection nozzle of short overall length, the second closing spring (22) acts on the intermediate bushing (24) via a spring plate (31) and a sliding bushing (30) surrounding the first closing spring (21), while the first closing spring (21) abuts on the spring plate (31) and, via a second spring plate (34) and a pressure pin (23), on the valve needle (14). Each closing spring (21, 22) therefore acts only during a partial stroke and can be simply dimensioned.
Inventors:
HOFUMAN KAARU
Application Number:
JP51075889A
Publication Date:
November 10, 1999
Filing Date:
October 19, 1989
Export Citation:
Assignee:
ROOBERUTO BOTSUSHU GMBH
International Classes:
F02M45/08; F02M61/10; F02M61/20; (IPC1-7): F02M45/08; F02M61/10
Domestic Patent References:
| JP62159765A | ||||
| JP6480763A | ||||
| JP281948A | ||||
| JP5881370U | ||||
| JP1157268U | ||||
| JP27364U |
Attorney, Agent or Firm:
Toshio Yano (2 outside)