WO2013002740A2 - A control device for electronic control of an internal combustion petrol engine for use of fuel gases - Google Patents

A control device for electronic control of an internal combustion petrol engine for use of fuel gases Download PDF

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Publication number
WO2013002740A2
WO2013002740A2 PCT/SI2012/000038 SI2012000038W WO2013002740A2 WO 2013002740 A2 WO2013002740 A2 WO 2013002740A2 SI 2012000038 W SI2012000038 W SI 2012000038W WO 2013002740 A2 WO2013002740 A2 WO 2013002740A2
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WO
WIPO (PCT)
Prior art keywords
gas
fuel
engine
control device
control unit
Prior art date
Application number
PCT/SI2012/000038
Other languages
French (fr)
Other versions
WO2013002740A3 (en
Inventor
Nedeljko Tkalec
Ante Moscatelli
Simon ŠTANCAR
Original Assignee
G - 1 D.O.O
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 G - 1 D.O.O filed Critical G - 1 D.O.O
Publication of WO2013002740A2 publication Critical patent/WO2013002740A2/en
Publication of WO2013002740A3 publication Critical patent/WO2013002740A3/en

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Classifications

    • 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
    • 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
    • F02D19/0602—Control of components of the fuel supply system
    • F02D19/0613—Switch-over from one fuel to another
    • F02D19/0615—Switch-over from one fuel to another being initiated by automatic means, e.g. based on engine or vehicle operating 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
    • F02D19/0639—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
    • F02D19/066—Retrofit of secondary fuel supply systems; Conversion of engines to operate on multiple fuels
    • 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
    • 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
    • F02D41/30—Controlling fuel injection
    • F02D41/3094—Controlling fuel injection the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the cylinder
    • 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

Definitions

  • the subject of the invention is a control device of an electronically controlled internal combustion petrol engine that regulates injection of fuel gas as a substitute of a primary fuel.
  • the technical problem solved by the present invention is a design of such control device of an electronically controlled internal combustion petrol engine that will ensure filling of cylinders with a suitable quantity of gas with regard to respective conditions of engine functioning and driver's requirements when the engine is converted to be driven by fuel gas.
  • the basic settings of engine functioning especially those determined in electronically controlled engines by a digital map, should not be changed, wherein such device should be technically and financially acceptable even when a small series of an individual vehicle type is converted, and even when conversion is intended for only one vehicle of a certain type.
  • the device of the invention is expected not to limit the use of petrol as fuel, wherein a changeover from petrol to fuel gas should be user friendly as known in the existing devices of this type.
  • Petrol and fuel gas differ in their energy values; when an engine is to be converted to be driven by fuel gas, the quantity of gas needs to be changed at each filling of a cylinder with a gas mixture in order to come closest to the energy value of petrol.
  • account should be taken of a difference in the speed of burning of various fuels, a difference in displacement value of various fuels, and a difference in response time of opening and closing of dosing valves that open and close a supply of a respective fuel.
  • functioning of a pressure regulator and setting of pressure height need to be taken into consideration as well.
  • the current devices of this type are made in a way to entirely replace the original control device under the consideration of gas properties.
  • a problem of these devices lies in that they need to be adapted in terms of a preparation of a digital map and with respect to factory foreseen sensors for each vehicle type separately, which, however, is time consuming and expensive. Such device is uncompetitive for smaller series of an individual vehicle type.
  • control devices take over gathering of values on various sensors on the engine from the original device, and these values are considered by a new digital map in a further control device and command parameters are generated, such as beginning and end of opening of nozzles for the injection of gas into intake collectors, and ignition moment.
  • command parameters are generated, such as beginning and end of opening of nozzles for the injection of gas into intake collectors, and ignition moment.
  • Such design of a control device of this type is actually cheaper than the one described above, however, there still remains a problem of adaptation of such device for a smaller number of vehicles of the same type due to high price.
  • Its drawback lies in that the data generated by the original control device are processed in it with respect to its digital map and as a result control commands are created. One cycle in its microprocessor is needed for this process. Consequently, a system error is always present, which is shown in quick changes in the functioning mode of the engine, i. e. when accelerating or driving uphill. The yield of the engine in these conditions is reduced.
  • a workshop should be expected to be able to quickly convert vehicles of many brands available on the home market for a market acceptable price and in a logistically and technically simple way. Moreover, a workshop should also ensure optimal functioning of a vehicle with optimal and lowest harmful exhaust.
  • a device of the invention includes an original control unit with a digital map and a new supplemental control unit that controls the data for the beginning and duration of opening of an electronic nozzle for gas supply. It uses a correction variable constant that depends on a difference in the caloric value of fuel gas and primary fuel; a difference in the speed of burning; displacement value of both fuels; and a difference in the speed of opening and closing of dosing valves for an individual fuel, whereas the beginning of opening should remain unchanged as determined by the original control unit. This is valid for each intake stroke.
  • a correction constant is determined on the basis of measurements of the mentioned differences and on the basis of tests performed on various vehicle types.
  • Correction of a correction constant with a variable part is carried out for individual vehicle types separately with respect to the measurements of exhaust and engine functioning.
  • the remaining control parameters remain unchanged; the installation for these parameters remains as original, too.
  • a stroke of microprocessors is considerably higher than intake strokes of internal combustion petrol engines, which depends on the number of engine revolutions; therefore the microprocessor of the original control device and that of the supplemental control unit allow for signal correction for opening of gas nozzles always in the same intake cycle of the internal combustion engine.
  • each signal for opening a gas nozzle (uniquely determined on the basis of a digital map and sensor data) is properly corrected by a correction constant in compliance with respective sensor data and an adequate point on the digital map of control.
  • a correction constant being foreseen in advance for each engine type separately, it means that each energy value of injected gas corresponds to the energy value of injected primary fuel as closely as possible.
  • Fig. 1 shows a schematic circuit diagram of the device of the invention installed subsequently to an internal combustion petrol engine.
  • a control device 1 of an electronically controlled internal combustion petrol engine 2 converted to be driven by fuel gas is designed in a way to completely include an original control device 3 of the engine 2, whereas all original sensors 4 connected to it are preserved, and a supplemental control unit 5 that controls gas injectors 6 on the basis of data from the basic control unit 3, in order to provide each cylinder in each intake stroke of the engine 2 to be filled with such quantity of gas that its energy value corresponds to the energy value of that quantity of petrol determined by the original control device 3 for the same intake stroke.
  • the original control device 3 is also a constituent part of the control device 1 which is intended for ignition control. It sends high-voltage current to ignition plugs 7 in the same moment with respect to the angle of the main shaft as foreseen in its original map.
  • the original control device 3 is a constituent part of the control device 1 and generates a signal for the beginning of opening of injectors 6 for gas injection into an intake collector 8 of the engine 2.
  • This signal is determined on the basis of a digital map in the device 3 and the data gathered by the sensors 4 on the engine 2 or on assemblies connected thereto.
  • This signal is guided along a guide 9 to the supplemental control unit 5.
  • the supplemental control unit 5 extends, by a correction time constant (in certain cases corrected in own map for a certain operation field), the time of opening of injectors 6 for gas supply to the cylinders of the engine 1, whereas the time of the beginning of opening of the injectors 6 remains the same as determined by the original control unit 2.
  • a correction constant is determined on the basis of differences in fuels used and the speed of opening and closing of injectors, which can be determined with measurements or by tests, and this constant is determined for the used injectors (valves) and the used fuel gas. Correction of a correction constant is determined by a test drive and monitoring of operation through OBD or by use of a dynamometre. If needed, the constant may be corrected in certain fields of operation of the engine, in which a fixed correction constant would lead to engine operation outside the area of optimal combustion.
  • Petroleum and various gases used as fuel can have various specific energy values.
  • the volume of a selected fuel must thus not change the energy value of the fuel quantity for one intake stroke of one cylinder and must remain the same as determined by the original control device 3.
  • an energy equivalent for the gas quantity is determined by gas pressure in the injector. This is achieved through a use of a pressure regulator on a gas evaporator 10 that is adopted as prior art and is available on the market in several variants.
  • Such supplemental control unit 5 of the invention considerably reduces the costs of installation of the entire device for a liquid gas drive (pressure vessel for liquefied gas, pipe installations, valves, gas evaporator, etc.).

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)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

A control device (1) of an electronically controlled internal combustion petrol engine (2) converted to be selectively driven by fuel gas or petroleum completely includes the original control device (1) of the engine, wherein all original sensors (4) connected to the original control device (3) also remain unchanged; its digital map wherein the original control unit (3), when gas is used as fuel, still controls ignition and generates a signal for the beginning and duration of opening of a nozzle (6) for gas injection, wherein the signal is transferred along a conduct (8) into the supplemental control unit (5), in which it is processed in the same microprocessor step of the control device (3) by a corrected correction constant (the corrected part being dependent on the use of fuel gas and its displacement properties), so that the duration of opening of the nozzles (6) for gas supply into the cylinders of the engine (2) is changed, whereas the time of the beginning of opening of the nozzles (6) remains the same as determined by the original control device (3).

Description

A CONTROL DEVICE FOR ELECTRONIC CONTROL OF AN INTERNAL COMBUSTION PETROL ENGINE FOR USE OF FUEL GASES
Subject of Invention
[001] The subject of the invention is a control device of an electronically controlled internal combustion petrol engine that regulates injection of fuel gas as a substitute of a primary fuel.
Technical Problem
[002] The technical problem solved by the present invention is a design of such control device of an electronically controlled internal combustion petrol engine that will ensure filling of cylinders with a suitable quantity of gas with regard to respective conditions of engine functioning and driver's requirements when the engine is converted to be driven by fuel gas. Simultaneously, the basic settings of engine functioning, especially those determined in electronically controlled engines by a digital map, should not be changed, wherein such device should be technically and financially acceptable even when a small series of an individual vehicle type is converted, and even when conversion is intended for only one vehicle of a certain type. The device of the invention is expected not to limit the use of petrol as fuel, wherein a changeover from petrol to fuel gas should be user friendly as known in the existing devices of this type.
Prior Art [003] Petrol and fuel gas differ in their energy values; when an engine is to be converted to be driven by fuel gas, the quantity of gas needs to be changed at each filling of a cylinder with a gas mixture in order to come closest to the energy value of petrol. When designing a control device of this type, account should be taken of a difference in the speed of burning of various fuels, a difference in displacement value of various fuels, and a difference in response time of opening and closing of dosing valves that open and close a supply of a respective fuel. Moreover, functioning of a pressure regulator and setting of pressure height need to be taken into consideration as well.
[004] The current devices of this type are made in a way to entirely replace the original control device under the consideration of gas properties. A problem of these devices lies in that they need to be adapted in terms of a preparation of a digital map and with respect to factory foreseen sensors for each vehicle type separately, which, however, is time consuming and expensive. Such device is uncompetitive for smaller series of an individual vehicle type.
[005] Further, another type of control devices is known; they take over gathering of values on various sensors on the engine from the original device, and these values are considered by a new digital map in a further control device and command parameters are generated, such as beginning and end of opening of nozzles for the injection of gas into intake collectors, and ignition moment. Such design of a control device of this type is actually cheaper than the one described above, however, there still remains a problem of adaptation of such device for a smaller number of vehicles of the same type due to high price. Its drawback lies in that the data generated by the original control device are processed in it with respect to its digital map and as a result control commands are created. One cycle in its microprocessor is needed for this process. Consequently, a system error is always present, which is shown in quick changes in the functioning mode of the engine, i. e. when accelerating or driving uphill. The yield of the engine in these conditions is reduced.
[006] The above-mentioned drawbacks were solved by patent application P200800186, which has a disadvantage when used with certain gases in certain zones of operation, as ideal combustion is sought for in order to reach optimal exhaust gases. By using a fixed correction constant, an engine can go beyond ideal combustion in certain zones, which causes suboptimal combustion and consequently exhaust.
[007] Given the fact that ready-made vehicles should be converted to be driven by fuel gas in terms of second installation, and the fact that it should be performed by authorised workshops, a workshop should be expected to be able to quickly convert vehicles of many brands available on the home market for a market acceptable price and in a logistically and technically simple way. Moreover, a workshop should also ensure optimal functioning of a vehicle with optimal and lowest harmful exhaust.
Solution to the Technical Problem
[008] The described technical problem is solved by a device of the invention. Its basic characteristic is that is includes an original control unit with a digital map and a new supplemental control unit that controls the data for the beginning and duration of opening of an electronic nozzle for gas supply. It uses a correction variable constant that depends on a difference in the caloric value of fuel gas and primary fuel; a difference in the speed of burning; displacement value of both fuels; and a difference in the speed of opening and closing of dosing valves for an individual fuel, whereas the beginning of opening should remain unchanged as determined by the original control unit. This is valid for each intake stroke. A correction constant is determined on the basis of measurements of the mentioned differences and on the basis of tests performed on various vehicle types. Correction of a correction constant with a variable part is carried out for individual vehicle types separately with respect to the measurements of exhaust and engine functioning. The remaining control parameters remain unchanged; the installation for these parameters remains as original, too. As no changes are performed in the digital map of the original control device, one does not have to be acquainted with it. This is of special importance in vehicles that are rarely present on a certain market. A stroke of microprocessors is considerably higher than intake strokes of internal combustion petrol engines, which depends on the number of engine revolutions; therefore the microprocessor of the original control device and that of the supplemental control unit allow for signal correction for opening of gas nozzles always in the same intake cycle of the internal combustion engine. It is herewith ascertained that each signal for opening a gas nozzle (uniquely determined on the basis of a digital map and sensor data) is properly corrected by a correction constant in compliance with respective sensor data and an adequate point on the digital map of control. This is possible due to a variable correction constant being foreseen in advance for each engine type separately, it means that each energy value of injected gas corresponds to the energy value of injected primary fuel as closely as possible.
[009] The invention will now be explained in more detail by way of an embodiment and the enclosed drawing, in which
Fig. 1 shows a schematic circuit diagram of the device of the invention installed subsequently to an internal combustion petrol engine.
[0010] A control device 1 of an electronically controlled internal combustion petrol engine 2 converted to be driven by fuel gas is designed in a way to completely include an original control device 3 of the engine 2, whereas all original sensors 4 connected to it are preserved, and a supplemental control unit 5 that controls gas injectors 6 on the basis of data from the basic control unit 3, in order to provide each cylinder in each intake stroke of the engine 2 to be filled with such quantity of gas that its energy value corresponds to the energy value of that quantity of petrol determined by the original control device 3 for the same intake stroke.
[0011] The original control device 3 is also a constituent part of the control device 1 which is intended for ignition control. It sends high-voltage current to ignition plugs 7 in the same moment with respect to the angle of the main shaft as foreseen in its original map.
[0012] Further, the original control device 3 is a constituent part of the control device 1 and generates a signal for the beginning of opening of injectors 6 for gas injection into an intake collector 8 of the engine 2. This signal is determined on the basis of a digital map in the device 3 and the data gathered by the sensors 4 on the engine 2 or on assemblies connected thereto. This signal is guided along a guide 9 to the supplemental control unit 5. In the same microprocessor step of the original control device 3 the supplemental control unit 5 extends, by a correction time constant (in certain cases corrected in own map for a certain operation field), the time of opening of injectors 6 for gas supply to the cylinders of the engine 1, whereas the time of the beginning of opening of the injectors 6 remains the same as determined by the original control unit 2.
[0013] A correction constant is determined on the basis of differences in fuels used and the speed of opening and closing of injectors, which can be determined with measurements or by tests, and this constant is determined for the used injectors (valves) and the used fuel gas. Correction of a correction constant is determined by a test drive and monitoring of operation through OBD or by use of a dynamometre. If needed, the constant may be corrected in certain fields of operation of the engine, in which a fixed correction constant would lead to engine operation outside the area of optimal combustion.
[0014] Petroleum and various gases used as fuel can have various specific energy values. The volume of a selected fuel must thus not change the energy value of the fuel quantity for one intake stroke of one cylinder and must remain the same as determined by the original control device 3. As the time of closing of the gas injector 6 is determined for a petrol injector 6a, it is foreseen that an energy equivalent for the gas quantity is determined by gas pressure in the injector. This is achieved through a use of a pressure regulator on a gas evaporator 10 that is adopted as prior art and is available on the market in several variants.
[0015] Such supplemental control unit 5 of the invention considerably reduces the costs of installation of the entire device for a liquid gas drive (pressure vessel for liquefied gas, pipe installations, valves, gas evaporator, etc.).
[0016] It is also foreseen that a changeover between gas and petrol should be carried out by an electric switch that allows for this change also during a drive.
[0017] When petroleum is used as fuel, only the original equipment of a vehicle is used as known in other devices of this type.

Claims

1. A control device (1) of an electronically controlled internal combustion petrol engine (2) converted to be selectively driven by fuel gas, wherein a simple changeover, also during a drive, between gas and petroleum as fuel is foreseen by a switch (11), and all known standard assemblies are used for the use of fuel gas in a vehicle (pressure vessel, reducing gas valve, pipes, safety elements, etc.); all original sensors (4) also remain unchanged and are connected to an original control unit (3), and additionally gas injectors (6) are arranged in an intake collector (7) apart from petroleum injectors (6a), wherein, when the engine is driven by petroleum, only the unchanged original control unit (3) with the belonging peripheral units is used; when gas is used as fuel, a switch (11) switches off the functioning of petroleum injectors (6a) and switches on the functioning of gas injectors (6) and of the belonging standardised assemblies, characterised in that it completely includes the unchanged original control device (3) of the engine (2) and a supplemental control unit (5), wherein a signal transferred along a control conduct (8) for controlling petroleum injectors (6a) is guided - when gas is used as fuel - via supplemental control unit (5) that in the same process step for the same ignition uses certain fields of a corrected correction constant to change duration of opening of each respective injector (6) for gas supply into engine (1) valves, whereas the time of the beginning of opening of injectors (6) remains the same as determined by the original control unit (2).
2. A device according to claim 1, characterised in that the correction constant is determined as a value added to each respective value for the length of opening of the injector (6) as determined by the original control unit (2) for each ignition of an individual valve, and that for petroleum as primary fuel and is corrected in certain fields in order to reach optimal combustion due to influences of differences in fuels on the functioning of the engine.
3. A device according to claims 1 and 2, characterised in that the time of opening of the injector is extended by a corrected correction constant in order to reach a stoichiometric ratio of air/fuel mixture and in order to reach an ideal ratio when using all fuel gases.
PCT/SI2012/000038 2011-06-28 2012-06-14 A control device for electronic control of an internal combustion petrol engine for use of fuel gases WO2013002740A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SIP-201100224 2011-06-28
SI201100224A SI23773A (en) 2011-06-28 2011-06-28 Control device for electronic controlling of gasoline engine with internal combustion for the use of flammable gases

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WO2013002740A2 true WO2013002740A2 (en) 2013-01-03
WO2013002740A3 WO2013002740A3 (en) 2013-03-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20131886A1 (en) * 2013-11-14 2015-05-15 Christian Girardello ELECTRONIC DEVICE FOR AUTOMATIC AND MANUAL ADJUSTMENT OF THE MINIMUM IN INTERNAL COMBUSTION ENGINES WITH CONTROL SWITCHED ON

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10121609B4 (en) * 2001-05-04 2006-04-06 Dirk Vialkowitsch Method for setting a particular retrofittable control device
DE102006043243A1 (en) * 2006-09-11 2008-03-27 Schröder, Matthias 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
US20080255753A1 (en) * 2007-04-10 2008-10-16 Paul Spivak Method and System for Automatically Adjusting Electronic Fuel Injection in Response to Fuel Type
SI22841A (en) * 2008-07-24 2010-01-29 G-1, D.O.O. Control device for electronic control of the internal combustion gasoline engine adapted to use any gas
GB2468539B (en) * 2009-03-13 2014-01-08 T Baden Hardstaff Ltd An injector emulation device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20131886A1 (en) * 2013-11-14 2015-05-15 Christian Girardello ELECTRONIC DEVICE FOR AUTOMATIC AND MANUAL ADJUSTMENT OF THE MINIMUM IN INTERNAL COMBUSTION ENGINES WITH CONTROL SWITCHED ON

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WO2013002740A3 (en) 2013-03-14

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