CA2524146C - Moteur a combustion interne a injection directe et methode de fabrication et d'exploitation - Google Patents

Moteur a combustion interne a injection directe et methode de fabrication et d'exploitation Download PDF

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Publication number
CA2524146C
CA2524146C CA002524146A CA2524146A CA2524146C CA 2524146 C CA2524146 C CA 2524146C CA 002524146 A CA002524146 A CA 002524146A CA 2524146 A CA2524146 A CA 2524146A CA 2524146 C CA2524146 C CA 2524146C
Authority
CA
Canada
Prior art keywords
fuel
engine
ignition
combustion chamber
injection valve
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 - Lifetime
Application number
CA002524146A
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English (en)
Other versions
CA2524146A1 (fr
Inventor
J. Victor Perr
David Andrew Lew
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.)
Westport Fuel Systems Canada Inc
Original Assignee
Westport Power Inc
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 Westport Power Inc filed Critical Westport Power Inc
Priority to CA002524146A priority Critical patent/CA2524146C/fr
Publication of CA2524146A1 publication Critical patent/CA2524146A1/fr
Priority to PCT/CA2006/001839 priority patent/WO2007056845A1/fr
Priority to CN2006800431542A priority patent/CN101313136B/zh
Application granted granted Critical
Publication of CA2524146C publication Critical patent/CA2524146C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02D19/0686—Injectors
    • F02D19/0692—Arrangement of multiple injectors per combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0626—Measuring or estimating parameters related to the fuel supply system
    • F02D19/0628—Determining the fuel pressure, temperature or flow, the fuel tank fill level or a valve position
    • F02D19/0631—Determining the fuel pressure, temperature or flow, the fuel tank fill level or a valve position by estimation, i.e. without using direct measurements of a corresponding sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02D19/0686—Injectors
    • F02D19/0689—Injectors for in-cylinder direct injection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
    • F02D19/10—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels peculiar to compression-ignition engines in which the main fuel is gaseous
    • F02D19/105—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels peculiar to compression-ignition engines in which the main fuel is gaseous operating in a special mode, e.g. in a liquid fuel only mode for starting
    • 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
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0275—Injectors for in-cylinder direct injection, e.g. injector combined with spark plug
    • 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
    • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
    • F02M31/04—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture
    • F02M31/06—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture by hot gases, e.g. by mixing cold and hot air
    • F02M31/08—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture by hot gases, e.g. by mixing cold and hot air the gases being exhaust gases
    • 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
    • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
    • F02M31/12—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating electrically
    • F02M31/13—Combustion air
    • 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
    • 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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/066—Retrofit of secondary fuel supply systems; Conversion of engines to operate on multiple fuels
    • 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
    • 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
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

L'invention concerne un moteur à combustion interne qui peut être alimenté en un premier carburant uniquement, en une combinaison du premier carburant et d'un deuxième carburant ou en un deuxième carburant uniquement. Le moteur comprend deux soupapes séparées d'injection de carburant disposées toutes les deux dans la tête de cylindre et qui injectent respectivement le premier et le deuxième carburants directement dans la chambre de combustion. Le moteur de l'invention permet d'utiliser des têtes de cylindre classiques en utilisant l'emplacement normalement occupé par une bougie pour monter la deuxième soupape d'injection de carburant. Pour fournir une assistance à l'allumage en remplacement de la bougie, le moteur de l'invention utilise un appareil d'assistance à l'allumage qui fonctionne en préconditionnant l'air dans le collecteur d'air d'admission. Un dispositif électronique de commande peut être programmé pour commander le fonctionnement de la première soupape d'injection de carburant, de la deuxième soupape d'injection de carburant et de l'appareil d'assistance à l'allumage en réponse à des conditions mesurées de fonctionnement du moteur. Le procédé d'utilisation du moteur de l'invention comprend les étapes consistant à préconditionner de l'air présent dans le collecteur d'air d'admission avant de l'introduire dans la chambre de combustion par recours à un appareil d'assistance à l'allumage, introduire le premier carburant directement dans la chambre de combustion par une première soupape d'injection de carburant, introduire le deuxième carburant directement dans la chambre de combustion par une deuxième soupape d'injection de carburant et sélectionner un parmi plusieurs modes de fonctionnement prédéterminés pour déterminer quand l'air doit être préconditionné, quand le premier carburant doit être introduit et quand le deuxième carburant doit être introduit, ces déterminations étant réalisées en réponse aux conditions mesurées de fonctionnement du moteur et à des entrées effectuées par l'opérateur.
CA002524146A 2005-11-18 2005-11-18 Moteur a combustion interne a injection directe et methode de fabrication et d'exploitation Expired - Lifetime CA2524146C (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002524146A CA2524146C (fr) 2005-11-18 2005-11-18 Moteur a combustion interne a injection directe et methode de fabrication et d'exploitation
PCT/CA2006/001839 WO2007056845A1 (fr) 2005-11-18 2006-11-09 Moteur a combustion interne a injection directe et procede pour sa fabrication et son utilisation
CN2006800431542A CN101313136B (zh) 2005-11-18 2006-11-09 直接喷射式内燃发动机及制造和操作该内燃发动机的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002524146A CA2524146C (fr) 2005-11-18 2005-11-18 Moteur a combustion interne a injection directe et methode de fabrication et d'exploitation

Publications (2)

Publication Number Publication Date
CA2524146A1 CA2524146A1 (fr) 2006-03-12
CA2524146C true CA2524146C (fr) 2008-05-13

Family

ID=36087477

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002524146A Expired - Lifetime CA2524146C (fr) 2005-11-18 2005-11-18 Moteur a combustion interne a injection directe et methode de fabrication et d'exploitation

Country Status (3)

Country Link
CN (1) CN101313136B (fr)
CA (1) CA2524146C (fr)
WO (1) WO2007056845A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022055347A1 (fr) * 2020-09-10 2022-03-17 Rob Pieterse Procédé de fourniture d'un ensemble moteur à combustion apte à fonctionner à l'hydrogène

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8469009B2 (en) 2006-03-31 2013-06-25 Westport Power Inc. Method and apparatus of fuelling an internal combustion engine with hydrogen and methane
CA2539711C (fr) 2006-03-31 2009-06-09 Westport Research Inc. Methode et appareil pour alimenter en hydrogene et en methane un moteur a combustion interne
WO2008113099A1 (fr) * 2007-03-22 2008-09-25 Geoffrey Russell Turner Système de délivrance de carburant permettant de mesurer la quantité de carburant dans un moteur commandé électroniquement
DE102007040910A1 (de) * 2007-08-30 2009-03-05 Bayerische Motoren Werke Aktiengesellschaft Kraftstoffeinbringungseinrichtung und Verfahren zum Betreiben derselben
US8826888B1 (en) * 2009-04-06 2014-09-09 Cleanflex Power Systems, LLC Apparatus for reducing engine emissions utilizing multiple types of fuels
DE112010005447T5 (de) * 2010-04-05 2013-03-28 Toyota Jidosha K.K. Steuervorrichtung für eine Brennkraftmaschine
CN102619628A (zh) * 2011-01-30 2012-08-01 北汽福田汽车股份有限公司 缸内直喷汽油机及缸内直喷汽油机掺烧方法
US8683979B2 (en) 2011-02-14 2014-04-01 Caterpillar Inc. Dual fuel common rail system and engine using same
US9534555B2 (en) * 2011-04-21 2017-01-03 Toyota Jidosha Kabushiki Kaisha Control device and method for internal combustion engine
US20130152894A1 (en) * 2011-12-14 2013-06-20 Ford Global Technologies, Llc Stop/start engine glow plug heater control
US9234452B2 (en) 2012-05-17 2016-01-12 Caterpillar Inc. Direct injection gas engine and method
CN102705068A (zh) * 2012-06-27 2012-10-03 北京理工大学 任意燃料压燃式内燃机
US9188069B2 (en) 2012-12-27 2015-11-17 Caterpillar Inc. Gaseous fuel system, direct injection gas engine system, and method
DE102013003457A1 (de) * 2013-03-01 2014-09-18 Daimler Ag Gasmotor und Betriebsverfahren
US9453465B2 (en) * 2013-05-07 2016-09-27 Ford Global Technologies, Llc Direct injection of diluents or secondary fuels in gaseous fuel engines
CA2826435C (fr) * 2013-09-06 2016-01-05 Westport Power Inc. Systeme de combustion pour moteur a combustion interne a combustible gazeux
CN105673199B (zh) * 2016-03-01 2018-01-23 上海交通大学 带egr的进气掺氢富氧汽油发动机燃烧的控制方法
US10077745B2 (en) * 2016-05-26 2018-09-18 Phillips & Temro Industries Inc. Intake air heating system for a vehicle
US10221817B2 (en) 2016-05-26 2019-03-05 Phillips & Temro Industries Inc. Intake air heating system for a vehicle
DE102016211792A1 (de) * 2016-06-30 2018-01-04 Continental Automotive Gmbh Gasbrennkraftmaschine mit Hilfsstartsystem und Verfahren zum Betreiben einer Gasbrennkraftmaschine
GB2570344B (en) 2018-01-23 2022-05-04 Ulemco Ltd Operating a compression ignition engine fuelled with a combination of a hydrocarbon fuel and hydrogen
CN111237037B (zh) * 2020-01-14 2021-06-29 高长生 一种热能高效回收利用发动机组
JP2023516273A (ja) * 2020-02-26 2023-04-19 クリアフレーム エンジンズ，インコーポレイテッド 燃料に依存しない圧縮着火エンジン
CN113756972A (zh) * 2021-07-23 2021-12-07 广西大学 一种提高增压米勒循环发动机热效率的方法
CN114962044B (zh) * 2022-05-16 2023-11-17 潍柴动力股份有限公司 天然气发动机预喷量的控制方法、装置及天然气发动机
CA3191238A1 (en) * 2023-02-27 2025-01-21 Hpdi Technology Limited Partnership Internal combustion engine and method of operating thereof
WO2025043329A1 (fr) * 2023-08-25 2025-03-06 Hpdi Technology Limited Partnership Appareil et procédé pour un moteur à combustion interne, à allumage par compression, à injection directe

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1513504A (en) * 1976-06-29 1978-06-07 Cummins Engine Co Inc Intake air heating apparatus for a multi-cylinder internal combustion engine
US4323046A (en) * 1977-05-05 1982-04-06 Stanley Barber Dual fuel system for automobiles
JPH0692736B2 (ja) * 1985-07-23 1994-11-16 マツダ株式会社 多気筒エンジンの吸気装置
US6591817B2 (en) * 2001-03-21 2003-07-15 Motorola, Inc. Dual fuel method and system
JP4033163B2 (ja) * 2004-04-12 2008-01-16 トヨタ自動車株式会社 水素利用内燃機関

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022055347A1 (fr) * 2020-09-10 2022-03-17 Rob Pieterse Procédé de fourniture d'un ensemble moteur à combustion apte à fonctionner à l'hydrogène

Also Published As

Publication number Publication date
CN101313136B (zh) 2012-02-08
CN101313136A (zh) 2008-11-26
WO2007056845A1 (fr) 2007-05-24
CA2524146A1 (fr) 2006-03-12

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