JPS57181926A - Diesel engine with direct injection - Google Patents

Diesel engine with direct injection

Info

Publication number
JPS57181926A
JPS57181926A JP56067128A JP6712881A JPS57181926A JP S57181926 A JPS57181926 A JP S57181926A JP 56067128 A JP56067128 A JP 56067128A JP 6712881 A JP6712881 A JP 6712881A JP S57181926 A JPS57181926 A JP S57181926A
Authority
JP
Japan
Prior art keywords
cavity
combustion
piston
fuel
diesel engine
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
JP56067128A
Other languages
Japanese (ja)
Inventor
Yukio Matsui
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP56067128A priority Critical patent/JPS57181926A/en
Publication of JPS57181926A publication Critical patent/JPS57181926A/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
    • F02B23/0618—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
    • F02B23/0624—Swirl 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
    • F02B23/0618—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
    • F02B23/0627—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 having additional bores or grooves machined into the piston for guiding air or charge flow to the piston bowl
    • 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
    • F02B23/0669—Details related to the fuel injector or the fuel spray having multiple fuel spray jets per injector nozzle
    • 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
    • F02B23/0696—W-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 wall
    • 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
    • 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
    • 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)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

PURPOSE:To improve the efficiency of combustion and reduce the concentration of exhaust smoke, by providing a groove as an air reservoir around a cavity provided on the central part of the top of a piston. CONSTITUTION:A cavity 5 is provided on the central part of the top of a piston 3. A cylinder head 7 is provided with a fuel nozzle 6 for injecting atomized fuel into the cavity 5. An annular groove 16, which serves as an air reservoir, is provided on the top of the piston 3 around the cavity 5. In the process of expansion, the flame and fuel in the cavity 5 jet toward a gap 11. At that time, the air in the annular groove 16 is ejected into a space 12 which is a combustion chamber. As a result, the combustion is promoted to be almost complete. According to this constitution, the combustion efficiency is improved and the concentration of exhaust smoke is reduced.
JP56067128A 1981-05-01 1981-05-01 Diesel engine with direct injection Pending JPS57181926A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56067128A JPS57181926A (en) 1981-05-01 1981-05-01 Diesel engine with direct injection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56067128A JPS57181926A (en) 1981-05-01 1981-05-01 Diesel engine with direct injection

Publications (1)

Publication Number Publication Date
JPS57181926A true JPS57181926A (en) 1982-11-09

Family

ID=13335949

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56067128A Pending JPS57181926A (en) 1981-05-01 1981-05-01 Diesel engine with direct injection

Country Status (1)

Country Link
JP (1) JPS57181926A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4473046A (en) * 1982-07-13 1984-09-25 Kabushiki Kaisha Toyota Chuo Kenkyusho Direct injection type internal combustion engine
EP0969191A3 (en) * 1998-07-01 2000-08-16 Man Nutzfahrzeuge Ag Diesel engine piston
FR2861136A1 (en) * 2003-10-20 2005-04-22 Renault Sa PISTON FOR COMBUSTION CHAMBER FOR REDUCING SOOT EMISSIONS
CN106014677A (en) * 2016-08-04 2016-10-12 广西玉柴机器股份有限公司 Piston of engine
CN108678870A (en) * 2018-05-09 2018-10-19 中国第汽车股份有限公司 The piston-top surface structure of soot in a kind of reduction cylinder of diesel engine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5543216A (en) * 1978-09-20 1980-03-27 Hino Motors Ltd Piston in diesel engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5543216A (en) * 1978-09-20 1980-03-27 Hino Motors Ltd Piston in diesel engine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4473046A (en) * 1982-07-13 1984-09-25 Kabushiki Kaisha Toyota Chuo Kenkyusho Direct injection type internal combustion engine
EP0969191A3 (en) * 1998-07-01 2000-08-16 Man Nutzfahrzeuge Ag Diesel engine piston
FR2861136A1 (en) * 2003-10-20 2005-04-22 Renault Sa PISTON FOR COMBUSTION CHAMBER FOR REDUCING SOOT EMISSIONS
CN106014677A (en) * 2016-08-04 2016-10-12 广西玉柴机器股份有限公司 Piston of engine
CN108678870A (en) * 2018-05-09 2018-10-19 中国第汽车股份有限公司 The piston-top surface structure of soot in a kind of reduction cylinder of diesel engine

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