WO2006058617A2 - Moteur a combustion interne diesel - Google Patents

Moteur a combustion interne diesel Download PDF

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Publication number
WO2006058617A2
WO2006058617A2 PCT/EP2005/012328 EP2005012328W WO2006058617A2 WO 2006058617 A2 WO2006058617 A2 WO 2006058617A2 EP 2005012328 W EP2005012328 W EP 2005012328W WO 2006058617 A2 WO2006058617 A2 WO 2006058617A2
Authority
WO
WIPO (PCT)
Prior art keywords
injection
fuel
piston
trough
combustion chamber
Prior art date
Application number
PCT/EP2005/012328
Other languages
German (de)
English (en)
Other versions
WO2006058617A3 (fr
Inventor
Annette Jooss
Gerhard König
Alois Raab
Original Assignee
Daimlerchrysler Ag
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 Daimlerchrysler Ag filed Critical Daimlerchrysler Ag
Publication of WO2006058617A2 publication Critical patent/WO2006058617A2/fr
Publication of WO2006058617A3 publication Critical patent/WO2006058617A3/fr

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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/12—Engines characterised by fuel-air mixture compression with compression ignition
    • 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
    • F02B23/0645—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
    • F02B23/0678—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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/10—Other injectors with multiple-part delivery, e.g. with vibrating valves
    • 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

Definitions

  • a surface of the trough interior comes about which prevents fuel enrichment, in particular in the trough edge region and on the trough bottom, due to the detachment effects in the trough bottom region.
  • An effective reduction of the particle formation during the combustion is made possible, and a necessary post-oxidation of possibly already formed soot particles comes about in time.
  • 1 is a schematic representation of an inventive combustion chamber configuration of an internal combustion engine with auto-ignition
  • a fuel injector 6 is arranged with an injection nozzle 6a in the cylinder head 2, which has a plurality of injection holes, not shown.
  • the injection nozzle may comprise a plurality of superimposed injection well rows, at least one series including injection wells having a steep spray cone angle of between about 70 ° and 90 °, and another series including injection wells having a flat cone angle between about 100 ° and 120 °.
  • the diameters of the steep injection-well bores are smaller than those of the flat injection-well bores, the number of steep injection-well bores preferably being smaller than the number of flat injection-well bores.
  • the design concept of the piston recess 4 aims at using the combustion chamber configuration according to the invention to guide the fuel jets 8 introduced into the combustion chamber 5 at least partially along the depression bottom contour 11 between the compression projection 10 and the depression rim 15 such that sufficient fuel components are removed by a detachment projection 16, in particular in shape a slope change or a convex designed area in the trough bottom 14 are detached from a trough bottom surface.
  • the jump-off or separation region provided for this purpose lies in a trough bottom section which has a distance A from the cylinder axis 19 which is approximately 30% to 70%, in particular 50%, of the piston radius.
  • the proposed combustion chamber configuration is also suitable for carrying out a post-injection, which is preferably injected conically into the combustion chamber with a spray-hole cone angle ⁇ between 80 ° and 140 ° or between 80 ° and 120 °.
  • a post-injection which is preferably injected conically into the combustion chamber with a spray-hole cone angle ⁇ between 80 ° and 140 ° or between 80 ° and 120 °.
  • the after-injection for example, injected in a crank angle range between 0 KW 3O and 15O 0 CA after top dead center
  • a regeneration of a downstream NOx storage catalytic converter are initiated.
  • the post-injected fuel jets are vaporized by the proposed combustion chamber configuration in conjunction with the intended injection strategy before reaching the cylinder wall.

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

L'invention concerne un moteur à combustion interne comprenant au moins un cylindre (1) dans lequel une chambre de combustion (5) est définie entre un piston (3) et une culasse (2), un injecteur de carburant (6) disposé dans la culasse (2), ainsi qu'une cavité (4) ménagée dans le piston (3). Du carburant est injecté dans la chambre de combustion (5) par une buse d'injection (6a) pendant un cycle de fonctionnement sous la forme de plusieurs quantités partielles correspondant à une préinjection, une injection principale et une post-injection. Selon l'invention, lorsqu'il arrive sur la cavité (4), le carburant est guidé au moins partiellement le long d'un contour (11) du fond de la cavité entre une partie saillante de compression (10) et un bord (15) de la cavité et les fractions de carburant guidées le long dudit contour (11) sont au moins partiellement séparées ou déviées d'une surface du fond de la cavité par une modification d'inclinaison (16) du fond (14) de la cavité ou par une zone convexe (R2) de ce fond (14).
PCT/EP2005/012328 2004-12-04 2005-11-17 Moteur a combustion interne diesel WO2006058617A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004058502 2004-12-04
DE102004058502.4 2004-12-04

Publications (2)

Publication Number Publication Date
WO2006058617A2 true WO2006058617A2 (fr) 2006-06-08
WO2006058617A3 WO2006058617A3 (fr) 2006-07-20

Family

ID=35695716

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/012328 WO2006058617A2 (fr) 2004-12-04 2005-11-17 Moteur a combustion interne diesel

Country Status (1)

Country Link
WO (1) WO2006058617A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2103790A3 (fr) * 2007-11-09 2015-04-08 Volkswagen Aktiengesellschaft Moteur à combustion interne doté d'un auto-allumage et d'un injecteur optimisé

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000130170A (ja) * 1998-10-28 2000-05-09 Yanmar Diesel Engine Co Ltd 直接噴射式ディーゼル機関の燃焼室
EP1045136A1 (fr) * 1999-04-13 2000-10-18 DaimlerChrysler AG Procédé de fonctionnement d'un moteur à combustion interne à piston alternatif et buse d'injection pour la mise en oeuvre de ce procédé
EP1321662A1 (fr) * 2001-10-09 2003-06-25 Caterpillar Inc. Injecteur de combustible avec capacité bi-mode et moteur utilisant cet injecteur
DE10213011A1 (de) * 2002-03-22 2003-10-02 Daimler Chrysler Ag Selbstzündende Brennkraftmaschine
DE10213025A1 (de) * 2002-03-22 2003-10-02 Daimler Chrysler Ag Selbstzündende Brennkraftmaschine
WO2005001255A1 (fr) * 2003-06-30 2005-01-06 Daimlerchrysler Ag Moteur a combustion interne a auto-allumage

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000130170A (ja) * 1998-10-28 2000-05-09 Yanmar Diesel Engine Co Ltd 直接噴射式ディーゼル機関の燃焼室
EP1045136A1 (fr) * 1999-04-13 2000-10-18 DaimlerChrysler AG Procédé de fonctionnement d'un moteur à combustion interne à piston alternatif et buse d'injection pour la mise en oeuvre de ce procédé
EP1321662A1 (fr) * 2001-10-09 2003-06-25 Caterpillar Inc. Injecteur de combustible avec capacité bi-mode et moteur utilisant cet injecteur
DE10213011A1 (de) * 2002-03-22 2003-10-02 Daimler Chrysler Ag Selbstzündende Brennkraftmaschine
DE10213025A1 (de) * 2002-03-22 2003-10-02 Daimler Chrysler Ag Selbstzündende Brennkraftmaschine
WO2005001255A1 (fr) * 2003-06-30 2005-01-06 Daimlerchrysler Ag Moteur a combustion interne a auto-allumage

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
OGAWA H ET AL: "IMPROVEMENTS OF DIESEL COMBUSTION AND EMISSIONS WITH TWO-STAGE FUEL INJECTION AT DIFFERENT PISTON POSITIONS" SAE TECHNICAL PAPER SERIES, SOCIETY OF AUTOMOTIVE ENGINEERS, WARRENDALE, PA, US, no. 2000-01-1180, 6 March 2000 (2000-03-06), pages 1-8, XP000962330 ISSN: 0148-7191 *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 08, 6 October 2000 (2000-10-06) -& JP 2000 130170 A (YANMAR DIESEL ENGINE CO LTD), 9 May 2000 (2000-05-09) *
SENECAL P K ET AL: "MULTI-MODE GENETIC ALGORITHM OPTIMIZATION OF COMBUSTION CHAMBER GEOMETRY FOR LOW EMISSIONS" SAE TECHNICAL PAPER SERIES, SOCIETY OF AUTOMOTIVE ENGINEERS, WARRENDALE, PA, US, no. 2002-01-0958, 4 March 2002 (2002-03-04), pages 1-11, XP001176901 ISSN: 0148-7191 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2103790A3 (fr) * 2007-11-09 2015-04-08 Volkswagen Aktiengesellschaft Moteur à combustion interne doté d'un auto-allumage et d'un injecteur optimisé

Also Published As

Publication number Publication date
WO2006058617A3 (fr) 2006-07-20

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