JPS562421A - Pilot injection method for diesel engine and its device - Google Patents

Pilot injection method for diesel engine and its device

Info

Publication number
JPS562421A
JPS562421A JP7657779A JP7657779A JPS562421A JP S562421 A JPS562421 A JP S562421A JP 7657779 A JP7657779 A JP 7657779A JP 7657779 A JP7657779 A JP 7657779A JP S562421 A JPS562421 A JP S562421A
Authority
JP
Japan
Prior art keywords
injection valve
main
nozzle hole
main injection
precombustion chamber
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.)
Granted
Application number
JP7657779A
Other languages
Japanese (ja)
Other versions
JPS5857612B2 (en
Inventor
Kanji Ohashi
Kazuo Konya
Yoshitada Uchiyama
Kunio Suzuki
Kinichi Motohashi
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP54076577A priority Critical patent/JPS5857612B2/en
Publication of JPS562421A publication Critical patent/JPS562421A/en
Publication of JPS5857612B2 publication Critical patent/JPS5857612B2/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Abstract

PURPOSE: To improve fuel consumption and reduce NOx by directing a pilot injection of an auxiliary injection valve towards a spot close to a nozzle hole of a main injection valve.
CONSTITUTION: A precombustion chamber block 2 stands across a cylinder head 1 towards a main combustion chamber 3. A precombustion chamber 4 formed in the precombustion chamber block 2 is connected to the main combustion chamber 3 by a passage 5. The precombustion chamber 4 has a main injection valve 6, an auxiliary injection valve 7 and a glow plug 8. A nozzle hole 9 of the main injection valve 6 is directed to the passage 5 and a nozzle hole 10 of the auxiliary injection valve 7 is faced to a spot close to the nozzle hole 9 of the main injection valve 6. In a diesel engine designed above, first, the auxiliary injection valve 7 ejects fuel as a pilot injection to form a spark zone C near the nozzle hole 9. Next, the main injection valve 9 performs main injection through said sprak zone C. Ignition delay of main injection fuel and NOx can be reduced by abrupt combustion.
COPYRIGHT: (C)1981,JPO&Japio
JP54076577A 1979-06-18 1979-06-18 Pilot injection method and device in pre-combustion chamber type diesel engine Expired JPS5857612B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54076577A JPS5857612B2 (en) 1979-06-18 1979-06-18 Pilot injection method and device in pre-combustion chamber type diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54076577A JPS5857612B2 (en) 1979-06-18 1979-06-18 Pilot injection method and device in pre-combustion chamber type diesel engine

Publications (2)

Publication Number Publication Date
JPS562421A true JPS562421A (en) 1981-01-12
JPS5857612B2 JPS5857612B2 (en) 1983-12-21

Family

ID=13609107

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54076577A Expired JPS5857612B2 (en) 1979-06-18 1979-06-18 Pilot injection method and device in pre-combustion chamber type diesel engine

Country Status (1)

Country Link
JP (1) JPS5857612B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112211714A (en) * 2020-11-27 2021-01-12 山东交通学院 Shock wave combustion-supporting precombustion chamber structure of gas engine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020134345A1 (en) * 2001-03-20 2002-09-26 Adams Joseph S. Combustion chamber system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112211714A (en) * 2020-11-27 2021-01-12 山东交通学院 Shock wave combustion-supporting precombustion chamber structure of gas engine

Also Published As

Publication number Publication date
JPS5857612B2 (en) 1983-12-21

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