JPS5698561A - Fuel injecting device for use in internal combustion engine - Google Patents

Fuel injecting device for use in internal combustion engine

Info

Publication number
JPS5698561A
JPS5698561A JP50580A JP50580A JPS5698561A JP S5698561 A JPS5698561 A JP S5698561A JP 50580 A JP50580 A JP 50580A JP 50580 A JP50580 A JP 50580A JP S5698561 A JPS5698561 A JP S5698561A
Authority
JP
Japan
Prior art keywords
oil pressure
valve
fuel
injecting device
pressure source
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
JP50580A
Other languages
Japanese (ja)
Inventor
Miya Ishii
Takeshi Okamoto
Yoshihisa Yamamoto
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.)
Denso Corp
Original Assignee
NipponDenso Co 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 NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP50580A priority Critical patent/JPS5698561A/en
Publication of JPS5698561A publication Critical patent/JPS5698561A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To attempt to miniaturize electromagnetic valves by arranging a pressure increasing mechanism in a fuel injecting device.
CONSTITUTION: An oil pressure of a low oil pressure source 3 is caused to act on an operating oil chamber 14 at one end of a change-over valve 5 consisting of a spool valve, through an injection timing setting electromagnetic valve 11, and similarly fuel is sent back to a fuel reservoir tank 16 via an electromagnetic valve 12. An oil pressure of a high oil pressure source 2 is caused to act on an operating oil chamber 18 on the other side of the above change-over valve 5. Within bores 7 and 6 formed at the lower part of the oil chamber 18, there are arranged unitarily a large-diameter piston 9 and a small-diameter plunger 8 thereby forming a pressure increasing mechanism. Further, the low oil pressure source 3 communicates with the nozzle 10 of an injector 1 through a quantity regulating control electromotive valve 13 and check valves 24 and 25. Further, in the course form the power source 3 to the nozzle 10, there is formed a spill circuit comprising a pump chamber 23, a vertical hole 27, grooves 26 and 28 and a spill passage 26a.
COPYRIGHT: (C)1981,JPO&Japio
JP50580A 1980-01-09 1980-01-09 Fuel injecting device for use in internal combustion engine Pending JPS5698561A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50580A JPS5698561A (en) 1980-01-09 1980-01-09 Fuel injecting device for use in internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50580A JPS5698561A (en) 1980-01-09 1980-01-09 Fuel injecting device for use in internal combustion engine

Publications (1)

Publication Number Publication Date
JPS5698561A true JPS5698561A (en) 1981-08-08

Family

ID=11475616

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50580A Pending JPS5698561A (en) 1980-01-09 1980-01-09 Fuel injecting device for use in internal combustion engine

Country Status (1)

Country Link
JP (1) JPS5698561A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5888457A (en) * 1981-11-23 1983-05-26 Nippon Denso Co Ltd Fuel injection device for internal-combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5888457A (en) * 1981-11-23 1983-05-26 Nippon Denso Co Ltd Fuel injection device for internal-combustion engine
JPH0315029B2 (en) * 1981-11-23 1991-02-28 Nippon Denso Co

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