JPS6415460A - Fuel injection device - Google Patents

Fuel injection device

Info

Publication number
JPS6415460A
JPS6415460A JP16974087A JP16974087A JPS6415460A JP S6415460 A JPS6415460 A JP S6415460A JP 16974087 A JP16974087 A JP 16974087A JP 16974087 A JP16974087 A JP 16974087A JP S6415460 A JPS6415460 A JP S6415460A
Authority
JP
Japan
Prior art keywords
fuel
piston
diameter piston
small
stage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16974087A
Other languages
Japanese (ja)
Inventor
Etsuo Kunimoto
Masaharu Tanimitsu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP16974087A priority Critical patent/JPS6415460A/en
Publication of JPS6415460A publication Critical patent/JPS6415460A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To reduce the cost and improve the reliability by inserting a check valve and an orifice in a passage feeding the pressurized fuel oil to a fuel feed chamber formed on the small-diameter piston side of a piston in a cylinder coupled with the two-stage piston. CONSTITUTION:A two-stage piston 18 made of a large-diameter piston 12 and a small-diameter piston 13 is slidably coupled in a two-stage cylinder 17, and an operating oil chamber 6c formed on the large-diameter piston 12 side is communicated to the discharge side oil path system 19 of a high-pressure pump 2 connected to a pressure accumulator 3 or an operating oil tank 1 via a three- way selector solenoid valve 4. A fuel feed chamber 6d formed on the small- diameter piston 13 side is connected to a fuel injection valve 11 via a fuel pipe 141 and a high-pressure injection pipe 10 provided in the center line direction, and a fuel passage 7a provided with a check valve 14 and an orifice 90 is branch-connected to the fuel pipe 14a. The other end of this fuel passage 7a is connected to the discharge side of a fuel feed pump 8.
JP16974087A 1987-07-09 1987-07-09 Fuel injection device Pending JPS6415460A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16974087A JPS6415460A (en) 1987-07-09 1987-07-09 Fuel injection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16974087A JPS6415460A (en) 1987-07-09 1987-07-09 Fuel injection device

Publications (1)

Publication Number Publication Date
JPS6415460A true JPS6415460A (en) 1989-01-19

Family

ID=15891967

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16974087A Pending JPS6415460A (en) 1987-07-09 1987-07-09 Fuel injection device

Country Status (1)

Country Link
JP (1) JPS6415460A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02264147A (en) * 1989-04-03 1990-10-26 Mitsubishi Heavy Ind Ltd Fuel injecting device for internal combustion engine
EP0789143A1 (en) * 1996-02-09 1997-08-13 Isuzu Motors Limited Fuel injector for internal combustion engines
US5970839A (en) * 1996-10-02 1999-10-26 Murata Kikai Kabushiki Kaisha Work cutting apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02264147A (en) * 1989-04-03 1990-10-26 Mitsubishi Heavy Ind Ltd Fuel injecting device for internal combustion engine
EP0789143A1 (en) * 1996-02-09 1997-08-13 Isuzu Motors Limited Fuel injector for internal combustion engines
US5743234A (en) * 1996-02-09 1998-04-28 Isuzu Motors Limited Fuel injector for internal combustion engines
US5970839A (en) * 1996-10-02 1999-10-26 Murata Kikai Kabushiki Kaisha Work cutting apparatus

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