JPS56106024A - Combustion chamber for direct-injection type diesel engine - Google Patents

Combustion chamber for direct-injection type diesel engine

Info

Publication number
JPS56106024A
JPS56106024A JP742380A JP742380A JPS56106024A JP S56106024 A JPS56106024 A JP S56106024A JP 742380 A JP742380 A JP 742380A JP 742380 A JP742380 A JP 742380A JP S56106024 A JPS56106024 A JP S56106024A
Authority
JP
Japan
Prior art keywords
region
combustion chamber
diameter
diesel engine
direct
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
JP742380A
Other languages
Japanese (ja)
Other versions
JPS6234926B2 (en
Inventor
Nobuji Eguchi
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.)
Hino Motors Ltd
Original Assignee
Hino Motors 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 Hino Motors Ltd filed Critical Hino Motors Ltd
Priority to JP742380A priority Critical patent/JPS56106024A/en
Publication of JPS56106024A publication Critical patent/JPS56106024A/en
Publication of JPS6234926B2 publication Critical patent/JPS6234926B2/ja
Granted 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
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0678—Unconventional, complex or non-rotationally symmetrical shapes of the combustion space, e.g. flower like, having special shapes related to the orientation of the fuel spray jets
    • F02B23/0693—Unconventional, complex or non-rotationally symmetrical shapes of the combustion space, e.g. flower like, having special shapes related to the orientation of the fuel spray jets the combustion space consisting of step-wise widened multiple zones of different depth
    • 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
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0645—Details related to the fuel injector or the fuel spray
    • F02B23/0648—Means or methods to improve the spray dispersion, evaporation or ignition
    • F02B23/0651—Means or methods to improve the spray dispersion, evaporation or ignition the fuel spray impinging on reflecting surfaces or being specially guided throughout the combustion space
    • 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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/14—Direct injection into combustion chamber
    • 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
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0618—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston having in-cylinder means to influence the charge motion
    • F02B23/0621—Squish flow
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

PURPOSE: To accomplish smokeless combustion, by providing a combustion chamber having three regions disposed inward from the top surface of a piston, and shaping these three regions in particular forms, so as to distribute fuel effectively and to obtain uniform mixture promptly.
CONSTITUTION: A combustion chamber employed in a diesel engine consists of the first region 1 opened in the top surface of a piston P, the second region 2 located just under the first region 1, and the third region 3 located under the second region 2. Here, the first region 1 is defined as a conical bore the diameter of which is increased from the top toward the bottom, so that the diameter D1 of the top opening 11 is made smaller than that D2 of the inner peripheral wall 12 located downwardly of the opening 11. The second region 2 is defined as a bore surrounded by a toroidal wall surface 21, which is shaped to have an arcuate surface drawn around the center X of an imaginary annular tube R1. Further, the third region 3 is defined by a conical inner peripheral wall surface 31, the diameter of which is increased toward the above, and a bottom surface 32 formed along an imaginary annular tube R2.
COPYRIGHT: (C)1981,JPO&Japio
JP742380A 1980-01-26 1980-01-26 Combustion chamber for direct-injection type diesel engine Granted JPS56106024A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP742380A JPS56106024A (en) 1980-01-26 1980-01-26 Combustion chamber for direct-injection type diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP742380A JPS56106024A (en) 1980-01-26 1980-01-26 Combustion chamber for direct-injection type diesel engine

Publications (2)

Publication Number Publication Date
JPS56106024A true JPS56106024A (en) 1981-08-24
JPS6234926B2 JPS6234926B2 (en) 1987-07-29

Family

ID=11665452

Family Applications (1)

Application Number Title Priority Date Filing Date
JP742380A Granted JPS56106024A (en) 1980-01-26 1980-01-26 Combustion chamber for direct-injection type diesel engine

Country Status (1)

Country Link
JP (1) JPS56106024A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62156136U (en) * 1986-03-26 1987-10-03
JPS62291424A (en) * 1986-06-12 1987-12-18 Mitsubishi Motors Corp Laminar combustion engine
JPS62291425A (en) * 1986-06-12 1987-12-18 Mitsubishi Motors Corp Laminar combustion engine
EP0295520A2 (en) * 1987-06-08 1988-12-21 Toyota Jidosha Kabushiki Kaisha Combustion chamber in a direct injection type diesel engine
WO2001012966A1 (en) * 1999-08-13 2001-02-22 Yanmar Diesel Engine Co., Ltd. Combustion chamber of direct injection diesel engine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62156136U (en) * 1986-03-26 1987-10-03
JPS62291424A (en) * 1986-06-12 1987-12-18 Mitsubishi Motors Corp Laminar combustion engine
JPS62291425A (en) * 1986-06-12 1987-12-18 Mitsubishi Motors Corp Laminar combustion engine
EP0295520A2 (en) * 1987-06-08 1988-12-21 Toyota Jidosha Kabushiki Kaisha Combustion chamber in a direct injection type diesel engine
EP0295520A3 (en) * 1987-06-08 1990-05-02 Toyota Jidosha Kabushiki Kaisha Method for effecting combustion and a combustion chamber in a direct injection type diesel engine
WO2001012966A1 (en) * 1999-08-13 2001-02-22 Yanmar Diesel Engine Co., Ltd. Combustion chamber of direct injection diesel engine

Also Published As

Publication number Publication date
JPS6234926B2 (en) 1987-07-29

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