ES2539852T3 - Un pistón posicionado para movimiento alternativo en un cilindro de un motor de combustión - Google Patents

Un pistón posicionado para movimiento alternativo en un cilindro de un motor de combustión Download PDF

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Publication number
ES2539852T3
ES2539852T3 ES11706166.3T ES11706166T ES2539852T3 ES 2539852 T3 ES2539852 T3 ES 2539852T3 ES 11706166 T ES11706166 T ES 11706166T ES 2539852 T3 ES2539852 T3 ES 2539852T3
Authority
ES
Spain
Prior art keywords
piston
combustion chamber
injector
section
rim
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.)
Active
Application number
ES11706166.3T
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English (en)
Inventor
Jan Eismark
Michael Balthasar
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.)
Volvo Technology AB
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Volvo Technology AB
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 Volvo Technology AB filed Critical Volvo Technology AB
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Publication of ES2539852T3 publication Critical patent/ES2539852T3/es
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Classifications

    • 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
    • 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
    • F02B23/0627—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 having additional bores or grooves machined into the piston for guiding air or charge flow to the piston bowl
    • 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
    • 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
    • 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
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00—Pistons 
    • 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)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

Un motor de combustión interna que comprende un pistón (3) posicionado para el movimiento recíproco en un cilindro del motor de combustión (2) entre una posición de punto muerto inferior y una posición de punto muerto superior, incluyendo dicho pistón una corona del pistón (16) que comprende una superficie superior frente a una cámara de combustión (7), conteniendo dicha cabeza del pistón (16) una cubeta de pistón formada por una cavidad abierta hacia fuera, comprendiendo dicha cubeta de pistón una sección de cubeta exterior ensanchada hacia fuera (20) que tiene una forma curvilínea cóncava en sección transversal, al menos un puerto de admisión (10, 12) dispuesto para proporcionar la cámara de combustión (7) con aire de admisión sustancialmente sin remolino, un inyector (13) dispuesto para inyectar combustible en la cámara de combustión (7) desde una posición adyacente a un centro geométrico (15) de dicha cámara de combustión (7) y que tiene un área de impacto de una emisión de llama que progresa en dicha sección de cubeta exterior (20) y donde sustancialmente a medio camino entre dichas zonas de impacto y en un plano sustancialmente perpendicular a dicho movimiento recíproco están dispuestos un primer tipo de salientes (60, 70, 81, 140) que sobresale en la cámara de combustión (7) de la sección de cubeta exterior (20) y que tiene una forma lisa adaptada para la conservación de la energía cinética en una emisión de llama y donde cada uno de dicho primer tipo de salientes (60, 70, 81, 140) tiene una forma de un reborde longitudinal que se extiende solamente en la sección de cubeta exterior (20) y donde dicho primer tipo de salientes (60, 70, 81, 160) que tiene un flanco lateral izquierdo (71) y un flanco lateral derecho (72) de dicho reborde cuando se ve desde dicho inyector (13) y donde dicho flanco lateral izquierdo (71) está formado de manera diferente en comparación a dicho flanco lateral derecho (72) con el fin de redirigir el movimiento de una emisión de llama progresando hacia dicho flanco lateral izquierdo (71) en un plano perpendicular a dicho movimiento recíproco de manera diferente en comparación con la correspondiente emisión de llama que progresa hacia dicho flanco lateral derecho (72), caracterizado porque una parte superior (145) de dicho reborde, se posiciona lejos de una parte inferior de dicha cubeta de pistón, que tiene una forma que se barre en una primera dirección (103 o 104) en un plano (101) perpendicular a un eje de movimiento alternativo del pistón (3) y cuando se ve desde dicho inyector (13), y una parte inferior (146) de dicho reborde, se posiciona cerca de dicha parte inferior de dicha cubeta de pistón, que tiene una forma que se barre en una dirección opuesta (103 o 104) a dicha primera dirección cuando se ve desde dicho inyector (13) y en otro plano (102) perpendicular a dicho eje de movimiento alternativo del pistón (3), y donde una distancia (105) paralela a un eje de movimiento alternativo del pistón (3) y entre dichos planos (101, 102) es al menos la mitad de una longitud total (93) de dicho reborde.

Description

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E11706166
17-06-2015
La presente invención puede ser utilizada en motores impulsados por combustibles, tales como por ejemplo diésel, DME (éter de dimetilo) o similares.
Debe tenerse en cuenta que los términos "centro geométrico de dicha cámara de combustión", "eje central del 5 pistón" o "eje central geométrico del cilindro del motor de combustión" pueden ser designados con el número 15 en las figuras.
La invención no debe considerarse que está limitada a las realizaciones descritas anteriormente, sino más bien una serie de variantes y modificaciones adicionales son concebibles dentro del alcance de las siguientes reivindicaciones 10 de la patente.
9

Claims (1)

  1. imagen1
ES11706166.3T 2010-02-18 2011-02-18 Un pistón posicionado para movimiento alternativo en un cilindro de un motor de combustión Active ES2539852T3 (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE1000163 2010-02-18
SE1000163 2010-02-18
PCT/EP2011/000780 WO2011101155A1 (en) 2010-02-18 2011-02-18 A piston positioned for reciprocal movement in a combustion engine cylinder

Publications (1)

Publication Number Publication Date
ES2539852T3 true ES2539852T3 (es) 2015-07-06

Family

ID=43797919

Family Applications (2)

Application Number Title Priority Date Filing Date
ES11705170.6T Active ES2527507T3 (es) 2010-02-18 2011-02-18 Un pistón posicionado para movimiento de vaivén en un cilindro de motor de combustión
ES11706166.3T Active ES2539852T3 (es) 2010-02-18 2011-02-18 Un pistón posicionado para movimiento alternativo en un cilindro de un motor de combustión

Family Applications Before (1)

Application Number Title Priority Date Filing Date
ES11705170.6T Active ES2527507T3 (es) 2010-02-18 2011-02-18 Un pistón posicionado para movimiento de vaivén en un cilindro de motor de combustión

Country Status (7)

Country Link
US (2) US8646428B2 (es)
EP (2) EP2536929B1 (es)
JP (2) JP5741594B2 (es)
CN (2) CN102822470B (es)
BR (2) BR112012020548B1 (es)
ES (2) ES2527507T3 (es)
WO (2) WO2011101155A1 (es)

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EP2215338B1 (en) * 2007-10-30 2014-06-11 Volvo Lastvagnar AB Device for reducing emissions in a vehicle combustion engine
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US10060386B2 (en) * 2012-12-18 2018-08-28 Volvo Truck Corporation Piston for a cylinder of a combustion engine
WO2014130705A1 (en) * 2013-02-20 2014-08-28 University Of Southern California Electrodes for multi-point ignition using single or multiple transient plasma discharges
FR3016926B1 (fr) * 2014-01-29 2018-12-07 IFP Energies Nouvelles Moteur a combustion a injection directe de combustible et plus particulierement moteur a allumage par compression avec faible taux de compression
WO2017108103A1 (en) * 2015-12-22 2017-06-29 Volvo Truck Corporation A piston crown for a piston in an internal combustion arrangement
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US10876464B2 (en) 2018-09-25 2020-12-29 Caterpillar Inc. Piston design for flow re-direction
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Also Published As

Publication number Publication date
JP2013519835A (ja) 2013-05-30
ES2527507T3 (es) 2015-01-26
US20130047950A1 (en) 2013-02-28
EP2536929B1 (en) 2014-11-05
EP2536929A1 (en) 2012-12-26
CN102770633A (zh) 2012-11-07
US20130199493A1 (en) 2013-08-08
US9027529B2 (en) 2015-05-12
EP2536930B1 (en) 2015-03-18
CN102770633B (zh) 2015-09-30
JP2013519834A (ja) 2013-05-30
CN102822470B (zh) 2015-09-23
WO2011101154A1 (en) 2011-08-25
BR112012020548A2 (pt) 2017-02-14
JP5741594B2 (ja) 2015-07-01
JP5748156B2 (ja) 2015-07-15
CN102822470A (zh) 2012-12-12
US8646428B2 (en) 2014-02-11
EP2536930A1 (en) 2012-12-26
WO2011101155A1 (en) 2011-08-25
BR112012020211A2 (pt) 2016-05-17
BR112012020211B1 (pt) 2020-12-15
BR112012020548B1 (pt) 2020-12-15

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