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JPS56106022A - Combustion chamber for direct-injection type diesel engine - Google Patents

Combustion chamber for direct-injection type diesel engine

Info

Publication number
JPS56106022A
JPS56106022A JP742180A JP742180A JPS56106022A JP S56106022 A JPS56106022 A JP S56106022A JP 742180 A JP742180 A JP 742180A JP 742180 A JP742180 A JP 742180A JP S56106022 A JPS56106022 A JP S56106022A
Authority
JP
Japan
Prior art keywords
chamber
combustion chamber
chambers
piston
shaped
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
JP742180A
Other languages
Japanese (ja)
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 JP742180A priority Critical patent/JPS56106022A/en
Publication of JPS56106022A publication Critical patent/JPS56106022A/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
    • 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
    • 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
    • F02B23/0672—Omega-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder center axis
    • 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 prevent generation of black smoke, by producing strong turbulence in the combustion chamber and to make the combustion efficiently by forming two chambers having particular shapes and sizes in the top surface of a piston in the manner that they extend inward from the top surface of the piston, and dividing these two chambers from each other by shelves.
CONSTITUTION: A combustion chamber is formed by the first chamer 1 opened in the top surface of a piston P and the second chamber 2 formed under the first chamber 1, which chambers 1, 2 are divided from each other by a projection 3 formed on the peripheral wall. The inner wall surface 11 of the first chamber 1 is defined as a portion of the outer peripheral surface of an imaginary annular tube R1 disposed around the center line Y of the first chamber 1 and it is shaped to have an arcuate surface having a radius r1 of curvature. On the other hand, most of the inner wall surface 21 and the peripheral bottom surface 22 of the second chamber 2 are defined as a portion of the outer surface of an imaginary annular tube R2, and they are shaped to have an arcuate surface having a radius r2 (>r1) of curvature. Further, the projection 3 is shaped to have a lower surface conforming to the peripheral surface of the imaginary annular tube R2 which has a generating line parallel to the tangent T2 drawn from the upper end of the inner wall surface 21 of the chamber 2.
COPYRIGHT: (C)1981,JPO&Japio
JP742180A 1980-01-26 1980-01-26 Combustion chamber for direct-injection type diesel engine Pending JPS56106022A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP742180A JPS56106022A (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
JP742180A JPS56106022A (en) 1980-01-26 1980-01-26 Combustion chamber for direct-injection type diesel engine

Publications (1)

Publication Number Publication Date
JPS56106022A true JPS56106022A (en) 1981-08-24

Family

ID=11665401

Family Applications (1)

Application Number Title Priority Date Filing Date
JP742180A Pending JPS56106022A (en) 1980-01-26 1980-01-26 Combustion chamber for direct-injection type diesel engine

Country Status (1)

Country Link
JP (1) JPS56106022A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60173310A (en) * 1984-02-15 1985-09-06 Mitsubishi Motors Corp Combustion chamber structure of diesel engine
JPS61182417A (en) * 1985-02-07 1986-08-15 Mitsubishi Motors Corp Combustion chamber structure of diesel engine
JPS644823U (en) * 1987-06-29 1989-01-12
EP0849448A1 (en) * 1996-12-19 1998-06-24 Cummins Engine Company, Inc. Deep angle injection nozzle and piston having complementary combustion bowl
WO2001012966A1 (en) * 1999-08-13 2001-02-22 Yanmar Diesel Engine Co., Ltd. Combustion chamber of direct injection diesel engine
FR2849900A1 (en) * 2003-01-13 2004-07-16 Renault Sa Combustion chamber for direct multi-cylinder injection and ignition engine, has concave portions separated from each other by projecting lever towards which injector injects fuel and divide it into set of zones
FR2879247A1 (en) * 2004-12-13 2006-06-16 Renault Sas ENGINE COMBUSTION CHAMBER AND INTERNAL COMBUSTION ENGINE PISTON FOR LARGE INJECTION PHASE IN THE CYCLE
JP2007051591A (en) * 2005-08-18 2007-03-01 Hino Motors Ltd Combustion chamber structure of direct injection diesel engine
WO2007091389A1 (en) * 2006-02-08 2007-08-16 Hino Motors, Ltd. Combustion chamber structure of direct injection type diesel engine
JP2011226435A (en) * 2010-04-22 2011-11-10 Isuzu Motors Ltd Engine combustion chamber structure
EP3147475A4 (en) * 2014-05-22 2017-03-29 Nissan Motor Co., Ltd Combustion chamber structure for diesel engine
GB2555116A (en) * 2016-10-18 2018-04-25 Caterpillar Energy Solutions Gmbh Piston for gas engine

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0584371B2 (en) * 1984-02-15 1993-12-01 Mitsubishi Motors Corp
JPS60173310A (en) * 1984-02-15 1985-09-06 Mitsubishi Motors Corp Combustion chamber structure of diesel engine
JPS61182417A (en) * 1985-02-07 1986-08-15 Mitsubishi Motors Corp Combustion chamber structure of diesel engine
JPS644823U (en) * 1987-06-29 1989-01-12
EP0849448A1 (en) * 1996-12-19 1998-06-24 Cummins Engine Company, Inc. Deep angle injection nozzle and piston having complementary combustion bowl
US5868112A (en) * 1996-12-19 1999-02-09 Cummins Engine Company, Inc. Deep angle injection nozzle and piston having complementary combustion bowl
WO2001012966A1 (en) * 1999-08-13 2001-02-22 Yanmar Diesel Engine Co., Ltd. Combustion chamber of direct injection diesel engine
FR2849900A1 (en) * 2003-01-13 2004-07-16 Renault Sa Combustion chamber for direct multi-cylinder injection and ignition engine, has concave portions separated from each other by projecting lever towards which injector injects fuel and divide it into set of zones
FR2879247A1 (en) * 2004-12-13 2006-06-16 Renault Sas ENGINE COMBUSTION CHAMBER AND INTERNAL COMBUSTION ENGINE PISTON FOR LARGE INJECTION PHASE IN THE CYCLE
JP4580309B2 (en) * 2005-08-18 2010-11-10 日野自動車株式会社 Combustion chamber structure of direct injection diesel engine
JP2007051591A (en) * 2005-08-18 2007-03-01 Hino Motors Ltd Combustion chamber structure of direct injection diesel engine
WO2007091389A1 (en) * 2006-02-08 2007-08-16 Hino Motors, Ltd. Combustion chamber structure of direct injection type diesel engine
JP2007211644A (en) * 2006-02-08 2007-08-23 Hino Motors Ltd Combustion chamber structure of direct injection diesel engine
US8156927B2 (en) 2006-02-08 2012-04-17 Hino Motors, Ltd. Combustion chamber structure for direct injection diesel engine
JP2011226435A (en) * 2010-04-22 2011-11-10 Isuzu Motors Ltd Engine combustion chamber structure
EP3147475A4 (en) * 2014-05-22 2017-03-29 Nissan Motor Co., Ltd Combustion chamber structure for diesel engine
EP3147475A1 (en) * 2014-05-22 2017-03-29 Nissan Motor Co., Ltd. Combustion chamber structure for diesel engine
US20170159549A1 (en) * 2014-05-22 2017-06-08 Nissan Motor Co., Ltd. Combustion Chamber Structure for Diesel Engine
GB2555116A (en) * 2016-10-18 2018-04-25 Caterpillar Energy Solutions Gmbh Piston for gas engine
GB2555116B (en) * 2016-10-18 2019-12-25 Caterpillar Energy Solutions Gmbh Double re-entrant piston for gas engine

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