FR2849902B1 - Piston pour moteur a combustion comportant une cavite constituee d'au moins deux zones de profils differents - Google Patents

Piston pour moteur a combustion comportant une cavite constituee d'au moins deux zones de profils differents

Info

Publication number
FR2849902B1
FR2849902B1 FR0300332A FR0300332A FR2849902B1 FR 2849902 B1 FR2849902 B1 FR 2849902B1 FR 0300332 A FR0300332 A FR 0300332A FR 0300332 A FR0300332 A FR 0300332A FR 2849902 B1 FR2849902 B1 FR 2849902B1
Authority
FR
France
Prior art keywords
zones
piston
combustion engine
different profiles
cavity consisting
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.)
Expired - Fee Related
Application number
FR0300332A
Other languages
English (en)
Other versions
FR2849902A1 (fr
Inventor
Pascal Frezza
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Priority to FR0300332A priority Critical patent/FR2849902B1/fr
Publication of FR2849902A1 publication Critical patent/FR2849902A1/fr
Application granted granted Critical
Publication of FR2849902B1 publication Critical patent/FR2849902B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F02B23/0672—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
    • 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
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00—Pistons 
    • F02F3/26—Pistons  having combustion chamber in piston head
    • 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
    • F02B75/00—Other engines
    • F02B75/12—Other methods of operation
    • F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-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
    • 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
    • F02B23/0624—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
    • F02B23/0645—Details related to the fuel injector or the fuel spray
    • F02B23/066—Details related to the fuel injector or the fuel spray the injector being located substantially off-set from the cylinder centre 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
    • 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
    • F02B23/069—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 characterised by its eccentricity from the cylinder 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
    • 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)
  • Dispersion Chemistry (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
FR0300332A 2003-01-14 2003-01-14 Piston pour moteur a combustion comportant une cavite constituee d'au moins deux zones de profils differents Expired - Fee Related FR2849902B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0300332A FR2849902B1 (fr) 2003-01-14 2003-01-14 Piston pour moteur a combustion comportant une cavite constituee d'au moins deux zones de profils differents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0300332A FR2849902B1 (fr) 2003-01-14 2003-01-14 Piston pour moteur a combustion comportant une cavite constituee d'au moins deux zones de profils differents

Publications (2)

Publication Number Publication Date
FR2849902A1 FR2849902A1 (fr) 2004-07-16
FR2849902B1 true FR2849902B1 (fr) 2007-03-09

Family

ID=32524882

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0300332A Expired - Fee Related FR2849902B1 (fr) 2003-01-14 2003-01-14 Piston pour moteur a combustion comportant une cavite constituee d'au moins deux zones de profils differents

Country Status (1)

Country Link
FR (1) FR2849902B1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2880384B1 (fr) * 2004-12-30 2007-04-13 Renault Sas Moteur a combustion interne comportant un piston dont le bossage du bol de combustion est muni d'une zone evidee
FR2880923B1 (fr) 2005-01-19 2011-07-29 Renault Sas Chambre de combustion d'un moteur a allumage par compression avec un injecteur de carburant decentre par rapport a l'axe du cylindre
FR2895019A1 (fr) * 2005-12-16 2007-06-22 Renault Sas Bol de piston pour moteur diesel a injection directe
FR2916236A3 (fr) * 2007-05-16 2008-11-21 Renault Sas Chambre de combustion dissymetrique pour moteur thermique
FR2916235A3 (fr) * 2007-05-16 2008-11-21 Renault Sas Chambre de combustion dissymetrique pour moteur thermique
CH704511A1 (de) * 2011-02-18 2012-08-31 Liebherr Machines Bulle Sa Gasottomotor.
JPWO2014106903A1 (ja) * 2013-01-07 2017-01-19 トヨタ自動車株式会社 内燃機関

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1057816B (de) * 1956-09-08 1959-05-21 Daimler Benz Ag Viertakt-Einspritzbrennkraftmaschine
US3144008A (en) * 1961-12-22 1964-08-11 List Hans Internal combustion engine with compression ignition
JP3024830B2 (ja) * 1991-09-09 2000-03-27 ヤンマーディーゼル株式会社 直接噴射式ディーゼル機関の燃焼室
JPH06221163A (ja) * 1993-01-29 1994-08-09 Mazda Motor Corp 直噴式ディーゼルエンジンの燃焼室構造
JPH07189699A (ja) * 1993-12-28 1995-07-28 Kubota Corp ディーゼルエンジンの直噴式燃焼室装置

Also Published As

Publication number Publication date
FR2849902A1 (fr) 2004-07-16

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Effective date: 20190906