Title:
燃料噴射弁
Document Type and Number:
Japanese Patent JP2005504919
Kind Code:
A
Abstract:
A fuel injector for fuel-injection systems of internal combustion engines having a piezoelectric or magnetostrictive actuator, includes a hydraulic coupler which actuates a valve-closure member ( 3 ) formed on a valve needle. The valve-closure member cooperates with a valve-seat surface to form a valve-sealing seat. The coupler includes a master piston and a slave piston which are guided in bores of a guide sleeve. Located between the master piston and the slave piston is a pressure chamber filled with a hydraulic fluid. A corrugated tube is positioned around the guide sleeve which is sealingly joined to the master piston at one end and to the slave piston at the other end, and which seals a supply chamber for the hydraulic fluid from a surrounding fuel chamber.
More Like This:
Inventors:
Gunther Hall
Application Number:
JP2003534750A
Publication Date:
February 17, 2005
Filing Date:
August 22, 2002
Export Citation:
Assignee:
ROBERT BOSCH GMBH
International Classes:
F02M51/00; F02M51/06; F02M61/08; F02M61/16; (IPC1-7): F02M51/06; F02M51/00
Attorney, Agent or Firm:
Toshio Yano
Einzel Felix-Reinhard
Reinhard Einsel
Einzel Felix-Reinhard
Reinhard Einsel