DE102006043243A1 - Alternative fuel e.g. methane, quantity estimating method, involves collecting injection period of base fuel, pressure and temperature alternative fuels, and determining energy equivalents between base and alternative fuels by adjusting box - Google Patents

Alternative fuel e.g. methane, quantity estimating method, involves collecting injection period of base fuel, pressure and temperature alternative fuels, and determining energy equivalents between base and alternative fuels by adjusting box Download PDF

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DE102006043243A1
DE102006043243A1 DE102006043243A DE102006043243A DE102006043243A1 DE 102006043243 A1 DE102006043243 A1 DE 102006043243A1 DE 102006043243 A DE102006043243 A DE 102006043243A DE 102006043243 A DE102006043243 A DE 102006043243A DE 102006043243 A1 DE102006043243 A1 DE 102006043243A1
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fuel
alternative
base
alternative fuel
pressure
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Matthias Schroeder
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • 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
    • F02D19/0602—Control of components of the fuel supply system
    • F02D19/0607—Control of components of the fuel supply system to adjust the fuel mass or volume flow
    • F02D19/061—Control of components of the fuel supply system to adjust the fuel mass or volume flow by controlling fuel injectors
    • 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
    • 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
    • F02D19/0639—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 characterised by the type of fuels
    • F02D19/0642—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 characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions
    • 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
    • F02D19/081—Adjusting the fuel composition or mixing ratio; Transitioning from one fuel to the other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0027—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures the fuel being gaseous
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425—Particular ways of programming the data
    • F02D41/2429—Methods of calibrating or learning
    • F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
    • F02D41/2464—Characteristics of actuators
    • F02D41/2467—Characteristics of actuators for injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2400/00—Control systems adapted for specific engine types; Special features of engine control systems not otherwise provided for; Power supply, connectors or cabling for engine control systems
    • F02D2400/11—After-sales modification devices designed to be used to modify an engine afterwards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425—Particular ways of programming the data
    • F02D41/2429—Methods of calibrating or learning
    • F02D41/2477—Methods of calibrating or learning characterised by the method used for learning
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
    • F02D41/266—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor the computer being backed-up or assisted by another circuit, e.g. analogue
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

The method involves collecting injection period of base fuel, pressure and temperature alternative fuels. Calibration injection period of the alternative fuel, correction pressure alternative fuel and correction temperature alternative fuel are collected. Energy equivalents between the base and alternative fuels are determined by an adjusting box. Correction factor, the energy equivalents, the calibration injection period of the alternative fuel, calibration injection period of base and alternative fuels, the correction temperature alternative fuel and volume extension rate are resulted.

Description

Die vorliegende Erfindung betrifft ein Verfahren zum Betreiben eines Kraftstoffsteuersystems zum bivalenten Antrieb von Brennstoffmotoren mit dem Ausgangskraftstoff Benzin oder Diesel und alternativ mit Flüssiggas, Erdgas, Methan, Biogas, Alkohol, Wasserstoff und andere Kohlenwasserstoff/Kohlenstoff basierende Fluide.The The present invention relates to a method for operating a Fuel control system for bivalent driving of fuel engines with the starting fuel gasoline or diesel and alternatively with LPG, Natural gas, methane, biogas, alcohol, hydrogen and other hydrocarbon / carbon based fluids.

Stand der Technik ist es, das für den gewünschten alternativen Kraftstoff ein darauf abgestimmtes fest hinterlegtes Kennfeld mit Steuerzeiten und Regelgrößen in einem separaten Steuergerät gespeichert werden muss und dadurch nur bedingt auf dynamische Veränderungen in der Kraftstoffmengenaufbereitung Einfluss genommen werden kann und es unweigerlich zu Abweichungen des hinterlegten Kraftstoffeinspritzkennfeld im Original Motorsteuergerät kommt.was standing It is the technique for that the wished alternative fuel is a firmly established one Map with control times and control variables stored in a separate control unit and therefore only conditionally to dynamic changes can be influenced in the fuel quantity preparation and it inevitably leads to deviations of the stored fuel injection map in the original engine control unit comes.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Abschätzung der alternativen Kraftstoffmenge in Verhältnis der Energiebilanz des Originalkraftstoffes in Bezug auf das Kraftstoffeinspritzkennfeld des vorhandenen Motorsteuergerätes zu schaffen und zwar so, das in jeder Betriebssituation die optimale alternative Kraftstoffmenge zur Verfügung steht, ohne dafür ein festes Kennfeld zu hinterlegen.Of the Invention is based on the object, a method for estimating the alternative fuel quantity in relation to the energy balance of Original fuel with respect to the fuel injection map of the existing engine control unit to do so in the best possible way in every operating situation alternative fuel is available without a fixed amount Map to deposit.

Diese Aufgabe wird erfindungsgemäß durch folgende Verfahrensschritte gelöst: Als erstes wird die Energieäquivalents XEnergie zwischen Basis-Kraftstoff und Alternativ-Kraftstoff mittels der Justierbox bestimmt.This object is achieved according to the invention by the following method steps: First, the energy equivalent X energy between the base fuel and the alternative fuel is determined by means of the adjustment box.

Die Justierbox wird elektronisch zwischen den Motorsteuergerät und den Einspritzdüsen montiert. Die Einspritzsignale werden durch die Justierbox geschliffen. Der Brennstoffmotor läuft mit 3000 U/min Drehzahl auf dem Basis-Kraftstoff und es wird die Einspritzdauer tBk ermittelt. Ein Zylinder wird auf den Alternativ-Kraftstoff umgeschaltet und es wird nun die genaue Einspritzdauer tAk ermittelt und mit dem Alternativ-Kraftstoffdruck PAk und der Alternativ-Kraftstofftemperatur TAk festgehalten. Als Ergebnis haben wir die Energieäquivalents XEnergie = tAk/tBk zwischen Basis-Kraftstoff und Alternativ-Kraftstoff bei PAk und TAk.The adjustment box is mounted electronically between the engine control unit and the injectors. The injection signals are ground by the Justierbox. The fuel engine runs at 3000 rpm on the base fuel and the injection duration t Bk is determined. A cylinder is switched to the alternative fuel and it is now the exact injection duration t Ak determined and recorded with the alternative fuel pressure P Ak and the alternative fuel temperature T Ak . As a result we have the energy equivalents X Energy = t Ak / t Bk between base fuel and alternative fuel at P Ak and T Ak .

Jetzt kann anhand der Energieäquivalents XEnergie die genaue Einspritzzeit TA für den Alternativ-Kraftstoff in Bezug auf das Kraftstoffeinspritzkennfeld des Motorsteuergerätes in jedem Betriebzustand wie folgt bestimmt werden: tA = (XEnergie tB) PAx Tax

tA
= Einspritzdauer Alternativ-Kraftstoff
XEnergie
= Energieäquivalents
tB
= Einspritzdauer Basis-Kraftstoff
PAx
= Korrektur Druck-Alternativ-Kraftstoff
TAx
= Korrektur Temperatur-Alternativ-Kraftstoff
PAx = ((PAk tAk)/PA)/tAk
PAx
= Korrektur Druck-Alternativ-Kraftstoff
tAk
= Kalibrierung Einspritzdauer Alternativ-Kraftstoff
PA
= Druck-Alternativ-Kraftstoff
TAx = ((TAk – TA)V1) + 1
TAx
= Korrektur Temperatur-Alternativ-Kraftstoff
TAk
= Kalibrierung Temperatur-Alternativ-Kraftstoff
TA
= Temperatur-Alternativ-Kraftstoff
V1
= Volumenausdehnungszahl
Now, based on the energy equivalent X energy, the exact injection time T A for the alternative fuel with respect to the fuel injection map of the engine control unit in each operating state can be determined as follows: t A = (X energy t B ) P Ax T ax
t A
= Injection duration alternative fuel
X energy
= Energy equivalent
t B
= Injection duration basic fuel
P Ax
= Correction pressure-alternative fuel
T ax
= Correct temperature alternative fuel
P Ax = ((P ak t ak ) / P A ) / T ak
P Ax
= Correction pressure-alternative fuel
t Ak
= Calibration injection duration alternative fuel
P A
= Pressure-alternative fuel
T Ax = ((T ak - T A ) V 1 ) + 1
T ax
= Correct temperature alternative fuel
T Ak
= Calibration of alternative temperature fuel
T A
= Temperature-alternative fuel
V 1
= Volume expansion coefficient

Claims (3)

Verfahren zur Abschätzung der alternativen Kraftstoffmenge in Verhältnis der Energiebilanz des Originalkraftstoffes in Bezug auf das Kraftstoffeinspritzkennfeld des vorhandenen Motorsteuergerätes, wobei das Verfahren folgende Schritte aufweist: Erfassung der tB = Einspritzdauer Basis-Kraftstoff, sowie PA = Druck-Alternativ-Kraftstoff und TA = Temperatur-Alternativ-Kraftstoff, insbesondere der tAk = Kalibrierung Einspritzdauer Alternativ-Kraftstoff, tA = Einspritzdauer Alternativ-Kraftstoff, sowie PAx = Korrektur Druck-Alternativ-Kraftstoff und TAx = Korrektur Temperatur-Alternativ-Kraftstoff und die daraus resultierende Korrekturfaktoren XEnergie = Energieäquivalents, tAk = Kalibrierung Einspritzdauer Alternativ-Kraftstoff, tBk = Kalibrierung Einspritzdauer Basis-Kraftstoff, sowie PAx = Korrektur Druck-Alternativ-Kraftstoff, TAx = Korrektur Temperatur-Alternativ-Kraftstoff und V1 = Volumenausdehnungszahl.A method for estimating the alternative fuel quantity in relation to the energy balance of the original fuel with respect to the fuel injection map of the existing engine control unit, the method comprising the steps of: detecting the t B = injection duration base fuel, and P A = pressure alternative fuel and T A = Alternative temperature fuel, in particular the t Ak = calibration injection duration alternative fuel, t A = injection duration alternative fuel, as well as P Ax = correction pressure alternative fuel and T Ax = correction temperature alternative fuel and the resulting Correction Factors X Energy = Energy Equivalent, t Ak = Calibration Injection Duration Alternate Fuel, t Bk = Calibration Injection Duration Base Fuel, and P Ax = Correction Pressure Alternate Fuel, T Ax = Correction Temp Alternative Fuel and V 1 = Volume Expansion Number. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Alternativ-Kraftstoff dynamisch (tA = (XEnergie tB) PAx Tax) in jeden Betriebszustand den optimalen Energiegehalt in Bezug auf das Original-Motorsteuergeräte-Einspritzkennfeld zur Verfügung stellt, ohne ein separates Kennfeld zu hinterlegen.A method according to claim 1, characterized in that the alternative fuel dynamically (t A = (X energy t B ) P Ax T ax ) in each operating state provides the optimal energy content with respect to the original engine control unit injection map, without a separate map to deposit. Verfahren nach Anspruch 1 und 2, dadurch gekennzeichnet, dass das Verfahren zum Betreiben eines Kraftstoffsteuersystems zum bivalenten Antrieb von Brennstoffmotoren mit dem Ausgangskraftstoff Benzin oder Diesel und alternativ mit Flüssiggas, Erdgas, Methan, Biogas, Alkohol, Wasserstoff und andere Kohlenwasserstoff/Kohlenstoff basierende Fluide nach einmaliger Justierung mittels der Justierbox mehrfach an zu wenden ist.A method according to claim 1 and 2, characterized in that the method for operating a fuel control system for bivalent driving of fuel engines with the starting fuel gasoline or diesel and alternatively with LPG, natural gas, methane, biogas, alcohol, hydrogen and other hydrocarbon / carbon-based fluids after a single adjustment by means of the Justierbox is repeatedly turn to.
DE102006043243A 2006-09-11 2006-09-11 Alternative fuel e.g. methane, quantity estimating method, involves collecting injection period of base fuel, pressure and temperature alternative fuels, and determining energy equivalents between base and alternative fuels by adjusting box Ceased DE102006043243A1 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010089568A1 (en) * 2009-02-05 2010-08-12 T Baden Hardstaff Limited A fuel injection system
WO2010103288A1 (en) * 2009-03-13 2010-09-16 T Baden Hardstaff Ltd A method and a control device for controlling an engine
WO2011061062A1 (en) * 2009-11-19 2011-05-26 Twintec Ag Method and device for injecting an alternative fuel
WO2013002740A3 (en) * 2011-06-28 2013-03-14 G - 1 D.O.O A control device for electronic control of an internal combustion petrol engine for use of fuel gases
CN103527334A (en) * 2013-10-15 2014-01-22 潍柴动力股份有限公司 Engine control method and device
ITUB20159514A1 (en) * 2015-12-28 2017-06-28 Landi Renzo Spa METHOD OF CONSTRUCTION OF A MATHEMATICAL MODEL OF A GASOLINE INJECTOR OF A BI-FUEL SUPPLY SYSTEM OF A MOTOR FOR MOTOR VEHICLES AND CONTROL UNITS FOR GAS INJECTORS THAT CAN BE USED IN A BI-FUEL SUPPLY SYSTEM FOR A MOTOR FOR A MOTOR VEHICLE.
EP3071822A4 (en) * 2013-11-22 2017-07-19 Westport Power Inc. Control system for a flexible fuel internal combustion engine

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Publication number Priority date Publication date Assignee Title
DE10121609A1 (en) * 2001-05-04 2002-11-14 Dirk Vialkowitsch Control device and method for setting a control device which can be retrofitted, with which an internal combustion engine operated with liquid fuel is controlled after switching over to operation with gaseous fuel
DE10349615A1 (en) * 2002-11-01 2004-05-19 Aisan Kogyo Kabushiki Kaisha, Obu Fuel injection control device for liquid petroleum/natural gas fuel in a motor vehicle issues an alternative fuel injection signal to an injection device for a specific cylinder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10121609A1 (en) * 2001-05-04 2002-11-14 Dirk Vialkowitsch Control device and method for setting a control device which can be retrofitted, with which an internal combustion engine operated with liquid fuel is controlled after switching over to operation with gaseous fuel
DE10349615A1 (en) * 2002-11-01 2004-05-19 Aisan Kogyo Kabushiki Kaisha, Obu Fuel injection control device for liquid petroleum/natural gas fuel in a motor vehicle issues an alternative fuel injection signal to an injection device for a specific cylinder

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010089568A1 (en) * 2009-02-05 2010-08-12 T Baden Hardstaff Limited A fuel injection system
CN102341580A (en) * 2009-02-05 2012-02-01 T·巴登哈德斯塔夫有限公司 Fuel injection system
WO2010103288A1 (en) * 2009-03-13 2010-09-16 T Baden Hardstaff Ltd A method and a control device for controlling an engine
WO2011061062A1 (en) * 2009-11-19 2011-05-26 Twintec Ag Method and device for injecting an alternative fuel
WO2013002740A3 (en) * 2011-06-28 2013-03-14 G - 1 D.O.O A control device for electronic control of an internal combustion petrol engine for use of fuel gases
CN103527334A (en) * 2013-10-15 2014-01-22 潍柴动力股份有限公司 Engine control method and device
CN103527334B (en) * 2013-10-15 2016-02-10 潍柴动力股份有限公司 A kind of engine control and device
EP3071822A4 (en) * 2013-11-22 2017-07-19 Westport Power Inc. Control system for a flexible fuel internal combustion engine
US10371069B2 (en) 2013-11-22 2019-08-06 Westport Power Inc. Control system for a flexible fuel internal combustion engine
ITUB20159514A1 (en) * 2015-12-28 2017-06-28 Landi Renzo Spa METHOD OF CONSTRUCTION OF A MATHEMATICAL MODEL OF A GASOLINE INJECTOR OF A BI-FUEL SUPPLY SYSTEM OF A MOTOR FOR MOTOR VEHICLES AND CONTROL UNITS FOR GAS INJECTORS THAT CAN BE USED IN A BI-FUEL SUPPLY SYSTEM FOR A MOTOR FOR A MOTOR VEHICLE.
WO2017115228A1 (en) * 2015-12-28 2017-07-06 A.E.B. S.P.A. Method for constructing a mathematical model of a petrol fuel injector of a bi-fuel supply plant of a motor for a motor vehicle and electronic control board of the gas injectors usable in a bi-fuel supply plant of a motor for a motor vehicle

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