JPS578314A - Fuel injection method and combustion chamber of direct injection diesel engine - Google Patents

Fuel injection method and combustion chamber of direct injection diesel engine

Info

Publication number
JPS578314A
JPS578314A JP8101880A JP8101880A JPS578314A JP S578314 A JPS578314 A JP S578314A JP 8101880 A JP8101880 A JP 8101880A JP 8101880 A JP8101880 A JP 8101880A JP S578314 A JPS578314 A JP S578314A
Authority
JP
Japan
Prior art keywords
wall
fuel
jets
faces
combustion 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
JP8101880A
Other languages
Japanese (ja)
Inventor
Kazunori Konjiki
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
Original Assignee
Mitsubishi Motors Corp
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 filed Critical Mitsubishi Motors Corp
Priority to JP8101880A priority Critical patent/JPS578314A/en
Publication of JPS578314A publication Critical patent/JPS578314A/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
    • F02B23/0696—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
    • 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
    • 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
    • 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
    • F02B23/0618—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
    • F02B23/0678—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
    • F02B23/0684—Ring like bowl, e.g. toroidal
    • 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

Abstract

PURPOSE: To obtain good mixing of fuel and air by permitting the fuel to jet against a wall, where the spray width shall be spread in the vertical direction, and come in contact afterward with a swirling flow.
CONSTITUTION: A protrusion 3 is formed in the middle of a concave 2 excavated at the top of a piston 1 and is provided with wall faces 4 which are approx. perpendicular to a swiring flow. The wall surfaces 4 shall be made mating with the jets of nozzles 5 on the cylinder head side 6 in an equal number to the jets, and swash faces are formed to guide the atomization to triangular shaped wall faces 4, 4. Spraying the fuel against this wall 4 will expand the atomized flow, conically formed with a diameter equal to jets, in the vertical direction at the time of thrust, yielding along-circled profile, and thereby the area of contact with the swirl is increased.
COPYRIGHT: (C)1982,JPO&Japio
JP8101880A 1980-06-16 1980-06-16 Fuel injection method and combustion chamber of direct injection diesel engine Pending JPS578314A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8101880A JPS578314A (en) 1980-06-16 1980-06-16 Fuel injection method and combustion chamber of direct injection diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8101880A JPS578314A (en) 1980-06-16 1980-06-16 Fuel injection method and combustion chamber of direct injection diesel engine

Publications (1)

Publication Number Publication Date
JPS578314A true JPS578314A (en) 1982-01-16

Family

ID=13734745

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8101880A Pending JPS578314A (en) 1980-06-16 1980-06-16 Fuel injection method and combustion chamber of direct injection diesel engine

Country Status (1)

Country Link
JP (1) JPS578314A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4770138A (en) * 1986-06-19 1988-09-13 Nippon Clen Engine Research Institute Co. Ltd. Fuel injection type internal combustion engine
JPH03253774A (en) * 1990-03-02 1991-11-12 Toyota Autom Loom Works Ltd Axial plunger pump
FR2835287A1 (en) * 2002-01-25 2003-08-01 Renault I.C. engine piston comprises upper face with central point and several cavities able to cooperate with combustion chamber formation
US7213564B2 (en) * 2002-10-02 2007-05-08 Westport Power Inc. Direct injection combustion chamber geometry
FR2895019A1 (en) * 2005-12-16 2007-06-22 Renault Sas Combustion chamber for e.g. common rail type direct injection diesel engine, has cylinder with piston having bowl with three recesses whose depth and orientation are defined, based on distance between nozzle and elevated part of bowl`s boss

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1012339A (en) * 1962-06-12 1965-12-08 Lucas Industries Ltd Piston and cylinder construction for internal combustion engines
JPS5240209A (en) * 1975-09-25 1977-03-29 Hino Motors Ltd Direct jet system internal combustion engine
JPS559557A (en) * 1978-07-06 1980-01-23 Ricoh Co Ltd Photoreceptor for electrophotography

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1012339A (en) * 1962-06-12 1965-12-08 Lucas Industries Ltd Piston and cylinder construction for internal combustion engines
JPS5240209A (en) * 1975-09-25 1977-03-29 Hino Motors Ltd Direct jet system internal combustion engine
JPS559557A (en) * 1978-07-06 1980-01-23 Ricoh Co Ltd Photoreceptor for electrophotography

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4770138A (en) * 1986-06-19 1988-09-13 Nippon Clen Engine Research Institute Co. Ltd. Fuel injection type internal combustion engine
JPH03253774A (en) * 1990-03-02 1991-11-12 Toyota Autom Loom Works Ltd Axial plunger pump
FR2835287A1 (en) * 2002-01-25 2003-08-01 Renault I.C. engine piston comprises upper face with central point and several cavities able to cooperate with combustion chamber formation
US7213564B2 (en) * 2002-10-02 2007-05-08 Westport Power Inc. Direct injection combustion chamber geometry
FR2895019A1 (en) * 2005-12-16 2007-06-22 Renault Sas Combustion chamber for e.g. common rail type direct injection diesel engine, has cylinder with piston having bowl with three recesses whose depth and orientation are defined, based on distance between nozzle and elevated part of bowl`s boss

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