JPS6429616A - Direct injection type diesel engine and method for combustion in said engine - Google Patents

Direct injection type diesel engine and method for combustion in said engine

Info

Publication number
JPS6429616A
JPS6429616A JP62182343A JP18234387A JPS6429616A JP S6429616 A JPS6429616 A JP S6429616A JP 62182343 A JP62182343 A JP 62182343A JP 18234387 A JP18234387 A JP 18234387A JP S6429616 A JPS6429616 A JP S6429616A
Authority
JP
Japan
Prior art keywords
bottom wall
fuel
wall surface
load operation
wall part
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
JP62182343A
Other languages
Japanese (ja)
Inventor
Shizuo Sasaki
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor 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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP62182343A priority Critical patent/JPS6429616A/en
Publication of JPS6429616A publication Critical patent/JPS6429616A/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
    • F02B23/0687—Multiple bowls in the piston, e.g. one bowl per fuel spray jet
    • 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
    • F02B23/0672—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
    • 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
    • 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 combustion performance by allowing jetted fuel to advance straightly and collide with the inner wall surface of a cavity at the top surface of a piston in the high load operation, while by changing the direction of advance of the jetted fuel by a swirl and avoiding the collision onto the inner wall surface in the low load operation. CONSTITUTION:As for a cavity 44 formed on the top surface of a piston 41, the inner peripheral wall surface 45 is formed into nearly conical form spread downwardly, and the bottom wall surface 46 is constituted of a four-leaves clover-shaped deep pan bottom wall part 46a and a shallow bottom wall surface part 46b having a nearly sector shape which is positioned between the contiguous bottom wall part 46a. A fuel injection valve 43 for jetting fuel F in all directions is arranged so that the shallow pan bottom wall part 46b is positioned on the injection axis line. In the high load operation of the engine, the jetted fuel is advanced straightly and allowed to collide with the shallow bottom wall part 46b, and in the low load operation, the swirl generated in combustion chamber 1 is strengthened, and the direction of advance is changed so that the jetted fuel does not collide with the shallow pan bottom wall part 46b.
JP62182343A 1987-07-23 1987-07-23 Direct injection type diesel engine and method for combustion in said engine Pending JPS6429616A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62182343A JPS6429616A (en) 1987-07-23 1987-07-23 Direct injection type diesel engine and method for combustion in said engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62182343A JPS6429616A (en) 1987-07-23 1987-07-23 Direct injection type diesel engine and method for combustion in said engine

Publications (1)

Publication Number Publication Date
JPS6429616A true JPS6429616A (en) 1989-01-31

Family

ID=16116649

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62182343A Pending JPS6429616A (en) 1987-07-23 1987-07-23 Direct injection type diesel engine and method for combustion in said engine

Country Status (1)

Country Link
JP (1) JPS6429616A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2909725A1 (en) * 2006-12-12 2008-06-13 Inst Francais Du Petrole Direct fuel injection internal combustion engine e.g. diesel engine, has concave bowl provided with radial guiding surfaces, where radial length of one of guiding surfaces is larger than radial length of another guiding surface
FR2916235A3 (en) * 2007-05-16 2008-11-21 Renault Sas Combustion chamber for oil engine, has annular cavity provided with semi-dome sections respectively with different heights in axial direction, where height of one semi-dome section is higher than that of other semi-dome section
US11085360B2 (en) * 2017-08-30 2021-08-10 Ls Mtron Ltd. Swirl chamber-type diesel engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2909725A1 (en) * 2006-12-12 2008-06-13 Inst Francais Du Petrole Direct fuel injection internal combustion engine e.g. diesel engine, has concave bowl provided with radial guiding surfaces, where radial length of one of guiding surfaces is larger than radial length of another guiding surface
FR2916235A3 (en) * 2007-05-16 2008-11-21 Renault Sas Combustion chamber for oil engine, has annular cavity provided with semi-dome sections respectively with different heights in axial direction, where height of one semi-dome section is higher than that of other semi-dome section
US11085360B2 (en) * 2017-08-30 2021-08-10 Ls Mtron Ltd. Swirl chamber-type diesel engine

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