Title:
FUEL INJECTION DEVICE FOR DIESEL ENGINE
Document Type and Number:
WIPO Patent Application WO/1998/016735
Kind Code:
A1
Abstract:
A fuel injection device for diesel engines which is large in an injector timing duration, small in irregularity, good in responsiveness, and simple in construction. The device comprises a cylindrical body (11), an upper plunger (12) inserted into the body and capable of sliding vertically with a cam, an intermediate plunger for defining a pressure chamber (14) between it and the upper plunger, a lower plunger (16) adapted to abut against the intermediate plunger, and an injection chamber (17) provided on a lower end of the lower plunger which is adapted to receive a force from the upper plunger to jet a fuel in the injection chamber. The device further comprises a thick hole (11b) for pressure oil formed in the body for supplying an oil pressure to the pressure chamber, a timing plunger (13) adapted to move up and down according to a pressure to vary a volume of the pressure chamber, and a timing spring (15) having one end thereof abutting against the timing plunger and the other end thereof abutting against the lower plunger to move the timing plunger up and down according to a pressure.
Inventors:
SATO HIROKI (JP)
AKAGI JIRO (JP)
AKAGI JIRO (JP)
Application Number:
PCT/JP1997/003581
Publication Date:
April 23, 1998
Filing Date:
October 07, 1997
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
SATO HIROKI (JP)
AKAGI JIRO (JP)
SATO HIROKI (JP)
AKAGI JIRO (JP)
International Classes:
F02M57/02; F02M61/10; (IPC1-7): F02M57/02
Foreign References:
| JPH06503147A | 1994-04-07 | |||
| JPH0749055A | 1995-02-21 | |||
| JPH02294551A | 1990-12-05 | |||
| JPH03206351A | 1991-09-09 |
Attorney, Agent or Firm:
Hashizume, Yoshihiko (3-6 Akasaka 2-chom, Minato-ku Tokyo 107, JP)
Download PDF:
Previous Patent: IDLE CONTROL FOR INTERNAL COMBUSTION ENGINE
Next Patent: FUEL-INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES
Next Patent: FUEL-INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES