WO2015087137A3 - Compression ignition internal combustion engine - Google Patents

Compression ignition internal combustion engine Download PDF

Info

Publication number
WO2015087137A3
WO2015087137A3 PCT/IB2014/002708 IB2014002708W WO2015087137A3 WO 2015087137 A3 WO2015087137 A3 WO 2015087137A3 IB 2014002708 W IB2014002708 W IB 2014002708W WO 2015087137 A3 WO2015087137 A3 WO 2015087137A3
Authority
WO
WIPO (PCT)
Prior art keywords
curved
combustion engine
internal combustion
curved surface
compression ignition
Prior art date
Application number
PCT/IB2014/002708
Other languages
French (fr)
Other versions
WO2015087137A2 (en
Inventor
Tomoyuki Ono
Original Assignee
Toyota Jidosha Kabushiki Kaisha
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 Jidosha Kabushiki Kaisha filed Critical Toyota Jidosha Kabushiki Kaisha
Publication of WO2015087137A2 publication Critical patent/WO2015087137A2/en
Publication of WO2015087137A3 publication Critical patent/WO2015087137A3/en

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
    • 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
    • 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)

Abstract

A compression ignition internal combustion engine includes a nozzle that is provided in a cylinder head and that injects fuel directly into a combustion chamber, and a piston in which a cavity is provided in a top surface thereof. The cavity includes a conical bottom surface, a curved surface that continues from the bottom surface toward a radial outside and curves toward the cylinder head side, and an inside surface that extends from the curved surface toward the cylinder head side. The inside surface includes a first inside surface, and a second inside surface that is separated from the first inside surface in a circumferential direction, and is closer to the nozzle than the first inside surface is. The nozzle injects a fuel spray toward each of the first and second inside surfaces. The curved surface includes first and second curved surfaces that are continuous with the first and second inside surfaces, respectively. A curvature radius of the first curved surface is smaller than a curvature radius of the second curved surface.
PCT/IB2014/002708 2013-12-13 2014-12-09 Compression ignition internal combustion engine WO2015087137A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-258274 2013-12-13
JP2013258274A JP2015113802A (en) 2013-12-13 2013-12-13 Control device of compression ignition type internal combustion engine

Publications (2)

Publication Number Publication Date
WO2015087137A2 WO2015087137A2 (en) 2015-06-18
WO2015087137A3 true WO2015087137A3 (en) 2015-09-24

Family

ID=52469858

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2014/002708 WO2015087137A2 (en) 2013-12-13 2014-12-09 Compression ignition internal combustion engine

Country Status (2)

Country Link
JP (1) JP2015113802A (en)
WO (1) WO2015087137A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10233865B2 (en) 2016-09-30 2019-03-19 Mahle International Gmbh Piston crown having conical valve pocket

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0586864A (en) * 1991-09-24 1993-04-06 Shinnenshiyou Syst Kenkyusho:Kk Combustion chamber of direct injection type diesel engine
EP1683950A1 (en) * 2004-12-30 2006-07-26 Renault Internal combustion engine having a piston with projection in the combustion bowl foreseen with a deepened zone
US7389764B1 (en) * 2007-01-23 2008-06-24 Gm Global Technology Operations, Inc. Low emissions diesel piston
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
DE102010044514A1 (en) * 2010-09-07 2011-04-21 Daimler Ag Piston for internal combustion engine, particularly for lifting cylinder machine of motor vehicle, has piston hollow unit with hollow base and intermediate portion
WO2011082788A2 (en) * 2009-12-17 2011-07-14 Ks Kolbenschmidt Gmbh Design of combustion chamber bowls in pistons for internal combustion engines
FR2958977A1 (en) * 2010-04-15 2011-10-21 Peugeot Citroen Automobiles Sa Piston for combustion chamber of diesel combustion engine of motor vehicle, has peripheral part forming torus, and bowl whose plain part constitutes bottom of bowl, which surrounds central part and connects central part to peripheral part
DE102010032442A1 (en) * 2010-07-28 2012-02-02 Audi Ag Self-igniting internal combustion engine with piston recesses with swirl graduation

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5589453B2 (en) 2010-03-11 2014-09-17 いすゞ自動車株式会社 Diesel engine combustion chamber

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0586864A (en) * 1991-09-24 1993-04-06 Shinnenshiyou Syst Kenkyusho:Kk Combustion chamber of direct injection type diesel engine
EP1683950A1 (en) * 2004-12-30 2006-07-26 Renault Internal combustion engine having a piston with projection in the combustion bowl foreseen with a deepened zone
US7389764B1 (en) * 2007-01-23 2008-06-24 Gm Global Technology Operations, Inc. Low emissions diesel piston
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
WO2011082788A2 (en) * 2009-12-17 2011-07-14 Ks Kolbenschmidt Gmbh Design of combustion chamber bowls in pistons for internal combustion engines
FR2958977A1 (en) * 2010-04-15 2011-10-21 Peugeot Citroen Automobiles Sa Piston for combustion chamber of diesel combustion engine of motor vehicle, has peripheral part forming torus, and bowl whose plain part constitutes bottom of bowl, which surrounds central part and connects central part to peripheral part
DE102010032442A1 (en) * 2010-07-28 2012-02-02 Audi Ag Self-igniting internal combustion engine with piston recesses with swirl graduation
DE102010044514A1 (en) * 2010-09-07 2011-04-21 Daimler Ag Piston for internal combustion engine, particularly for lifting cylinder machine of motor vehicle, has piston hollow unit with hollow base and intermediate portion

Also Published As

Publication number Publication date
JP2015113802A (en) 2015-06-22
WO2015087137A2 (en) 2015-06-18

Similar Documents

Publication Publication Date Title
WO2011139332A3 (en) Combustion chamber constructions for opposed-piston engines
WO2014186136A3 (en) Piston having combustion bowl shaped to balance combustion efficiency and emission properties
MX2017003084A (en) Internal combustion engine.
MX365766B (en) Lightweight construction of a diesel piston.
WO2012160376A3 (en) Internal combustion engines
WO2006017051A3 (en) Auto-ignition gasoline engine combustion chamber and method
MX2013008004A (en) Piston for use in internal combustion engines.
PL3574204T3 (en) Internal combustion engine comprising a fuel injection nozzle with an additional supply of a combustion-promoting medium into the combustion chamber
WO2011123855A3 (en) Forced induction system for an internal combustion engine
EP2626598A3 (en) Engines and pistons for them
WO2015110894A3 (en) Control device for compression-ignited internal combustion engine
MX2015003484A (en) Compression piston ring for an internal combusion engine.
IN2014DE01650A (en)
WO2016193902A3 (en) Internal combustion engine having two fuel injectors per cylinder and control method therefor
MY165714A (en) Internal combustion engine
WO2016016229A3 (en) Combustion chamber design of a vcr engine
WO2015038420A3 (en) A swirl-conserving combustion chamber construction for opposed-piston engines
WO2015087137A3 (en) Compression ignition internal combustion engine
PH12020500006A1 (en) Combustion chamber structure for direct injection internal combustion engine
RU2017102894A (en) BURNING METHOD
EP3880947A4 (en) Piston internal combustion engine with generator
WO2012122291A3 (en) Engine arrangement for enhanced cooling
WO2011008706A3 (en) Adaptive mixed-mode combustion methods and engines using the same
MX2016004545A (en) Piston for an internal combustion engine, and production method therefor.
JP2015218614A5 (en)

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14836965

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14836965

Country of ref document: EP

Kind code of ref document: A2