official journal of the patent office - Controller General of Patents ...

(12) PATENT APPLICATION PUBLICATION
(19) INDIA (21) APPLICATION No:
2151/MAS/1998A
(22) Date of filing of Application: 24/09/1998 (43) Publication Date: 09/06/2006
(54) Title of the invention:
HIGH-PRESSURE FUEL PUMP UNIT
FOR IN-CYLINDER INJECTING TYPE
ENGINE.
(51)International classification: F 02 B
13/06
(31) Priority Document No.9-260417
(32) Priority Date: 25/09/1997
(33) Name of priority country: JAPAN .
(87) WIPO No. :
(61) Patent of addition to
Application No. :
Filed on:
(62) Divisional to
Application No.:
Filed on:
(71) Name of Applicant
MITSUBISHI DENKI KABUSHIKI
KAISHA,
Address of Applicant:
2-3,MARUNOUCHI 2-
CHOME,CHIYODA-KU,TOKYO 100,
JAPAN.
(72) Name of the Inventor(s):
SHUZO ISOZUMI.
WAKAKI MIYAJI.
(57)Abstract
The high-pressure fuel pump unit for an in-cylinder injecting type engine of the invention comprises high-pressure
fuel pump 3 which has a casing 40 having a sucking path and a discharge path, a cylinder 41 provided in the casing 40
and having a sliding hole 41 a, a fuel pressurizing chamber 45 formed on a part of the sliding hole 41 a, and a plunger
43 arranged reciprocally movably in the sliding hole 41 a, sucks the fuel from the sucking path into the fuel
pressurizing chamber 45 through reciprocation of the plunger 43, and discharges the pressurized fuel from the
discharge path, and pressure-feeds the same to a fuel injector 1 of an in-cylinder injecting type engine; a damper 30
which is provided integrally with the high-pressure fuel pump 3 and absorbs pulsation of the fuel pressure caused by
the high-pressure fuel pump 3 in the low-pressure fuel path; and an accumulator 70 which is provided integrally with
the high-pressure fuel pump 3 and absorbs pulsation of pressure of the fuel discharged by the high-pressure fuel pump
3.
The Patent Office Journal 09/06/2006 10784