EP0509372B1 - Verfahren zur Brennstoffeinspritzung für einen Dieselmotor mit Voreinspritzung - Google Patents

Verfahren zur Brennstoffeinspritzung für einen Dieselmotor mit Voreinspritzung Download PDF

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Publication number
EP0509372B1
EP0509372B1 EP92105985A EP92105985A EP0509372B1 EP 0509372 B1 EP0509372 B1 EP 0509372B1 EP 92105985 A EP92105985 A EP 92105985A EP 92105985 A EP92105985 A EP 92105985A EP 0509372 B1 EP0509372 B1 EP 0509372B1
Authority
EP
European Patent Office
Prior art keywords
fuel
liquid fuel
volume
injection
injector
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
EP92105985A
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English (en)
French (fr)
Other versions
EP0509372A1 (de
Inventor
Robert Herrmann
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.)
MAN Energy Solutions France SAS
Original Assignee
SEMT Pielstick SA
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 SEMT Pielstick SA filed Critical SEMT Pielstick SA
Publication of EP0509372A1 publication Critical patent/EP0509372A1/de
Application granted granted Critical
Publication of EP0509372B1 publication Critical patent/EP0509372B1/de
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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
    • 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/022—Adding fuel and water emulsion, water or steam
    • F02M25/0228—Adding fuel and water emulsion
    • 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
    • F02B47/00—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines
    • F02B47/02—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being water or steam
    • 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
    • F02B7/00—Engines characterised by the fuel-air charge being ignited by compression ignition of an additional fuel
    • F02B7/02—Engines characterised by the fuel-air charge being ignited by compression ignition of an additional fuel the fuel in the charge being liquid
    • 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
    • F02B2201/00—Fuels
    • F02B2201/06—Dual fuel applications
    • F02B2201/064—Liquid and gas
    • 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

Definitions

  • the present invention relates to a fuel injection method for an internal combustion engine of the Diesel type using a gaseous main fuel and a secondary liquid fuel in the form of a pilot injection intended to initiate the combustion of the main fuel. This process is also called dual fuel injection.
  • the known injection process for engines of this type consists in initializing the combustion of the main fuel (gas) by injection of a liquid fuel representing 5 to 10% of the maximum volume that can be injected by the pump. injection.
  • This injection pump is designed to allow the engine to reach its maximum power only from liquid fuel, this in case of temporary absence of gaseous fuel.
  • the minimum value of the volume of liquid fuel injected is limited by the geometric precision of the production of the components of the injection pump and the injector. This precision determines the lower threshold below which the balance between the cylinders and the regularity of injection of a volume sufficient to initiate combustion can no longer be guaranteed (i.e. approximately the equivalent of 2% of the maximum energy that can be introduced).
  • the minimum value of the volume of liquid fuel injected is further limited by the dimensioning of the injector sprayer holes which are optimized to ensure correct spraying at full engine power. They then prove to be too large to spray under good conditions a few percent of the maximum flow rate.
  • the invention therefore relates to a fuel injection method for an internal combustion engine of the type Diesel using a gaseous main fuel and a secondary liquid fuel in the form of a pilot injection intended to initiate the combustion of the main fuel, the liquid fuel being injected by an injection pump designed to allow the engine to reach its maximum power only from the liquid fuel and by injector comprising spraying holes which are optimized to ensure a correct spraying of the liquid fuel at full engine power, characterized in that a mixture of water and fuel is prepared in the proportions allowing on pilot injection to initiate combustion and that this mixture is injected from said injection pump through said spray holes of said injector.
  • Dual oil engines generally use, for liquid fuel, an injection pump per engine cylinder, each cylinder having its injector. The arrival of gas in a cylinder is done with its own distribution system.
  • liquid fuel is injected by an injection pump designed to allow the engine to reach its maximum power only from liquid fuel.
  • An advantage of the invention is that no modification is to be made to the engine, the water-fuel mixture being able to be prepared outside the engine by a known process.
  • the volume of liquid fuel contained in the mixture can be reduced to the minimum thermodynamically necessary volume and compatible with the precision performance of the injection pump and the dimensioning of the injector sprayer holes. This minimum volume can be easily determined by tests.
  • a volume of liquid fuel in the mixture representing 2% to 7% of the maximum volume that can be injected by the pump is entirely satisfactory for the smooth running of the engine.
  • the volume of the pilot injection that is to say the quantity of mixture injected, can then represent between 5 and 10% of the maximum volume injectable by the pump.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Claims (4)

  1. Verfahren zum Einspritzen von Brennstoffen für einen Diesel-Verbrennungsmotor, das einen gasförmiges Hauptbrennstoff und einen flüssigen Sekundär-Brennstoff verwendet, der die Verbrennung des Hauptbrennstoffs starten soll, wobei der flüssige Brennstoff durch eine Einspritzpumpe, die so ausgebildet ist, daß der Motor seine maximale Leistung nur ausgehend vom flüssigen Brennstoff erreichen kann, und durch eine Einspritzdüse eingespritzt wird, die Zerstäubungslöcher aufweist, welche für eine korrekte Einspritzung des flüssigen Brennstoffs bei voller Leistung des Motors optimiert sind, dadurch gekennzeichnet, daß eine Mischung von Wasser und Brennstoff in derartigen Anteilen hergestellt wird, daß die Piloteinspritzung die Verbrennung starten kann, und daß diese Mischung ausgehend von der Einspritzpumpe durch die Zerstäubungslöcher der Düse eingespritzt wird.
  2. Einspritzverfahren nach Anspruch 1, dadurch gekennzeichnet, daß das in der Mischung enthaltene Volumen an flüssigem Brennstoff das thermodynamisch notwendige minimale Volumen ist, das mit den Präzisionsanforderungen der Einspritzpumpe und der Größe der Zerstäubungslöcher der Einspritzdüse der Düse kompatibel ist.
  3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Volumen der Piloteinspritzung der Mischung 5 bis 10% des maximal von der Pumpe einspritzbaren Volumens darstellt.
  4. Verfahren nach einem der Ansprüche 1 oder 3, dadurch gekennzeichnet, daß das in der Piloteinspritzung enthaltene Volumen an flüssigem Brennstoff 2 bis 7% des maximal von der Pumpe einspritzbaren Volumens darstellt.
EP92105985A 1991-04-12 1992-04-07 Verfahren zur Brennstoffeinspritzung für einen Dieselmotor mit Voreinspritzung Expired - Lifetime EP0509372B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9104514 1991-04-12
FR9104514A FR2675208B1 (fr) 1991-04-12 1991-04-12 Procede d'injection de combustibles pour un moteur diesel utilisant une injection pilote.

Publications (2)

Publication Number Publication Date
EP0509372A1 EP0509372A1 (de) 1992-10-21
EP0509372B1 true EP0509372B1 (de) 1995-05-24

Family

ID=9411785

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92105985A Expired - Lifetime EP0509372B1 (de) 1991-04-12 1992-04-07 Verfahren zur Brennstoffeinspritzung für einen Dieselmotor mit Voreinspritzung

Country Status (10)

Country Link
US (1) US5243932A (de)
EP (1) EP0509372B1 (de)
JP (1) JP3307979B2 (de)
KR (1) KR100240609B1 (de)
CN (1) CN1028791C (de)
AT (1) ATE123110T1 (de)
DE (1) DE69202617T2 (de)
DK (1) DK0509372T3 (de)
FI (1) FI104115B (de)
FR (1) FR2675208B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6386149B1 (en) 1998-02-18 2002-05-14 Clean Fuel Technology, Inc. Method of operating an engine with a mixture of gaseous fuel and emulsified pilot fuel to reduce nitrogen oxide emissions
WO2004088109A1 (de) 2003-04-03 2004-10-14 Daimlerchrysler Ag Brennkraftmaschine mit selbstzündung

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4337048C2 (de) * 1993-10-29 1996-01-11 Daimler Benz Ag Kraftstoffeinspritzanlage für eine Brennkraftmaschine
US6230683B1 (en) * 1997-08-22 2001-05-15 Cummins Engine Company, Inc. Premixed charge compression ignition engine with optimal combustion control
WO1998007973A1 (en) 1996-08-23 1998-02-26 Cummins Engine Company, Inc. Premixed charge compression ignition engine with optimal combustion control
US5682842A (en) * 1996-09-24 1997-11-04 Caterpillar Inc. Fuel control system for an internal combustion engine using an aqueous fuel emulsion
US5765537A (en) * 1997-01-17 1998-06-16 Caterpillar Inc. Fuel recirculation system
US6095101A (en) * 1997-01-29 2000-08-01 Man B&W Diesel A/S Internal combustion engine of the diesel type for combustion of gas, and a method of supplying such an engine with fuel
CN1292153C (zh) 1998-02-23 2006-12-27 卡明斯发动机公司 带有优化燃烧控制的预混合充量压缩点火发动机
US6032617A (en) * 1998-05-27 2000-03-07 Caterpillar Inc. Dual fuel engine which ignites a homogeneous mixture of gaseous fuel, air, and pilot fuel
US6378487B1 (en) 2000-09-01 2002-04-30 International Truck And Engine Corporation Method and apparatus for pre-pilot fuel injection in diesel internal combustion engines
US6863034B2 (en) 2003-01-17 2005-03-08 Robert D. Kern Method of controlling a bi-fuel generator set
AU2003901841A0 (en) * 2003-04-16 2003-05-01 Orbital Australia Pty Ltd An improved fuel reformer and mixing chamber therefor
CN1312393C (zh) * 2004-02-12 2007-04-25 上海交通大学 柴油机双燃油泵喷射两种燃料的喷射系统
AU2010265846A1 (en) * 2009-06-23 2013-02-07 Horley, Anthony James System and method of injecting combustible gas in liquid form into a diesel engine
BR112016013644A2 (pt) * 2013-12-12 2017-08-08 Mosaic Tech Development Pty Ltd Sistema de combustível de veículo
WO2023272392A1 (en) * 2021-06-29 2023-01-05 Westport Fuel Systems Canada Inc. Apparatus and method for injecting a pilot fuel into an internal combustion engine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3523687C1 (de) * 1985-07-03 1986-07-03 Daimler-Benz Ag, 7000 Stuttgart Verfahren zur Erzeugung einer Dieselkraftstoff-Wasser-Emulsion fuer einen Dieselmotor

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FR2383315A1 (fr) * 1977-03-07 1978-10-06 Feuerman Arnold Moteur a combustion interne comprenant une source d'emulsion eau-dans-hydrocarbure
US4403944A (en) * 1979-10-10 1983-09-13 Pyykkoenen Pentti Auxiliary device for oil burner for mixing water and oil for combustion
WO1981001173A1 (en) * 1979-10-22 1981-04-30 Caterpillar Tractor Co Dual fuel rotary controlled pilot and main injection
GB2126650B (en) * 1982-08-31 1988-02-10 George Stan Baranescu I c engine injection system providing a stratified charge of two fuels
CA1226183A (en) * 1982-10-30 1987-09-01 Timothy J. Bedford Fuel oil injection engine
IT1168927B (it) * 1983-05-03 1987-05-20 Ernesto Marelli Apparecchiatura per l'emulsione e l'atomizzazione di combustibili fluidi con fluidi secondari,in particolare acqua
GB8425577D0 (en) * 1984-10-10 1984-11-14 Flintheath Ltd Fuel control system
JPH0654106B2 (ja) * 1985-10-26 1994-07-20 マツダ株式会社 エンジンの燃料噴射装置
FR2595761B1 (fr) * 1986-03-14 1988-05-13 Semt Dispositif d'injection pour moteur a combustion interne, permettant l'injection de deux combustibles
CH672661A5 (de) * 1987-03-17 1989-12-15 Sulzer Ag
JPH0654101B2 (ja) * 1987-06-02 1994-07-20 三菱重工業株式会社 ガス焚きディ−ゼルエンジンのガス供給装置
US4831993A (en) * 1987-12-28 1989-05-23 Erik Kelgard Method of operating carburetted dual-fuel engines with diesel pilot oil injection
US4955326A (en) * 1989-04-12 1990-09-11 Cooper Industries, Inc. Low emission dual fuel engine and method of operating same
US5024195A (en) * 1990-06-07 1991-06-18 Pien Pao C Multi-fuel compression-ignition engine and fuel injection pump therefor
US5140959A (en) * 1991-01-28 1992-08-25 Durbin Enoch J Method and apparatus for operation of a dual fuel compression ignition combustion engine
US5136986A (en) * 1991-04-26 1992-08-11 Energy Conversions, Inc. Dual fuel injection structure

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Publication number Priority date Publication date Assignee Title
DE3523687C1 (de) * 1985-07-03 1986-07-03 Daimler-Benz Ag, 7000 Stuttgart Verfahren zur Erzeugung einer Dieselkraftstoff-Wasser-Emulsion fuer einen Dieselmotor

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* Cited by examiner, † Cited by third party
Title
Brochure "Moteur diesel à quatre temps 'Duel fuel' et leur adaption pour la propulsion des méthaniers", Association Technique Maritime et Aréonautique, Session 1964 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6386149B1 (en) 1998-02-18 2002-05-14 Clean Fuel Technology, Inc. Method of operating an engine with a mixture of gaseous fuel and emulsified pilot fuel to reduce nitrogen oxide emissions
WO2004088109A1 (de) 2003-04-03 2004-10-14 Daimlerchrysler Ag Brennkraftmaschine mit selbstzündung

Also Published As

Publication number Publication date
US5243932A (en) 1993-09-14
CN1066909A (zh) 1992-12-09
KR920020069A (ko) 1992-11-20
KR100240609B1 (ko) 2000-01-15
FI104115B1 (fi) 1999-11-15
ATE123110T1 (de) 1995-06-15
EP0509372A1 (de) 1992-10-21
FR2675208B1 (fr) 1993-06-11
JPH06159108A (ja) 1994-06-07
DE69202617D1 (de) 1995-06-29
FI104115B (fi) 1999-11-15
FI921621A0 (fi) 1992-04-10
DE69202617T2 (de) 1995-09-21
FI921621A (fi) 1992-10-13
CN1028791C (zh) 1995-06-07
FR2675208A1 (fr) 1992-10-16
DK0509372T3 (da) 1995-08-28
JP3307979B2 (ja) 2002-07-29

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