JPS57195819A - Combustion chamber of subchamber type in diesel engine - Google Patents

Combustion chamber of subchamber type in diesel engine

Info

Publication number
JPS57195819A
JPS57195819A JP56080273A JP8027381A JPS57195819A JP S57195819 A JPS57195819 A JP S57195819A JP 56080273 A JP56080273 A JP 56080273A JP 8027381 A JP8027381 A JP 8027381A JP S57195819 A JPS57195819 A JP S57195819A
Authority
JP
Japan
Prior art keywords
area
communication hole
piston
main
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.)
Pending
Application number
JP56080273A
Other languages
Japanese (ja)
Inventor
Koichi Nakanishi
Takeo Takaishi
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 Motors Corp
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Motors Corp
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 Motors Corp, Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Motors Corp
Priority to JP56080273A priority Critical patent/JPS57195819A/en
Publication of JPS57195819A publication Critical patent/JPS57195819A/en
Pending 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
    • F02B19/00—Engines characterised by precombustion chambers
    • F02B19/16—Chamber shapes or constructions not specific to sub-groups F02B19/02 - F02B19/10
    • F02B19/18—Transfer passages between chamber and cylinder
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Abstract

PURPOSE:To improve a combustion characteristic at low speed high load operation of an engine, by communicating main and subcombustion chambers through a communication hole, speading sectional area of its passage from the main chamger side to the subchamber side further setting area ratios of both end openings of the communication hole for area of a piston top to within a specific range. CONSTITUTION:The captioned engine is formed such that a main combustion chamber 4, formed by a piston 1, cylinder liner 2 and cylinder head 3, and a subcombustion chamber 9, constituted with a lower part by a cap 5, are communicted by a communication hole 6 drilled in the cap 5. In this case, the communication hole 6 is formed with its sectional passage to oval shape, simultaneously its sectional area is arrnged with a side of the subcombustion chamber 9 winder further with a side of the main combustion chamber 4 narrower. While ratio of area in an opening at the side of the subchamber 9 of the communication hole 6 to area of a top of the piston 1 is st to within a range of 1.6-2.5%, further raio of area in an opening at the side of the main chamber 4 to the area of the top of the piston 1 is similarly set to within a range of 0.7-1.6%. In this way, smoke concentration at low speed high load operation can be decreased to attain the desired end.
JP56080273A 1981-05-26 1981-05-26 Combustion chamber of subchamber type in diesel engine Pending JPS57195819A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56080273A JPS57195819A (en) 1981-05-26 1981-05-26 Combustion chamber of subchamber type in diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56080273A JPS57195819A (en) 1981-05-26 1981-05-26 Combustion chamber of subchamber type in diesel engine

Publications (1)

Publication Number Publication Date
JPS57195819A true JPS57195819A (en) 1982-12-01

Family

ID=13713669

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56080273A Pending JPS57195819A (en) 1981-05-26 1981-05-26 Combustion chamber of subchamber type in diesel engine

Country Status (1)

Country Link
JP (1) JPS57195819A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01166719U (en) * 1988-05-14 1989-11-22
FR2657396A1 (en) * 1990-01-25 1991-07-26 Peugeot Compression-ignition engine including a swirl prechamber having a flared transfer passage
EP0747583A1 (en) * 1995-06-05 1996-12-11 Yamaha Hatsudoki Kabushiki Kaisha Internal combustion engine of the auxiliary vortex combustion chamber type

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55123311A (en) * 1979-03-15 1980-09-22 Mitsubishi Heavy Ind Ltd Diesel engine with subsidiary combustion chamber

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55123311A (en) * 1979-03-15 1980-09-22 Mitsubishi Heavy Ind Ltd Diesel engine with subsidiary combustion chamber

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01166719U (en) * 1988-05-14 1989-11-22
FR2657396A1 (en) * 1990-01-25 1991-07-26 Peugeot Compression-ignition engine including a swirl prechamber having a flared transfer passage
EP0747583A1 (en) * 1995-06-05 1996-12-11 Yamaha Hatsudoki Kabushiki Kaisha Internal combustion engine of the auxiliary vortex combustion chamber type
US5769050A (en) * 1995-06-05 1998-06-23 Yamaha Hatsudoki Kabushiki Kaisha Prechamber for diesel engine

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