SI22841A - Control device for electronic control of the internal combustion gasoline engine adapted to use any gas - Google Patents

Control device for electronic control of the internal combustion gasoline engine adapted to use any gas Download PDF

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Publication number
SI22841A
SI22841A SI200800186A SI200800186A SI22841A SI 22841 A SI22841 A SI 22841A SI 200800186 A SI200800186 A SI 200800186A SI 200800186 A SI200800186 A SI 200800186A SI 22841 A SI22841 A SI 22841A
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SI
Slovenia
Prior art keywords
gas
control unit
gasoline
injector
injectors
Prior art date
Application number
SI200800186A
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Slovenian (sl)
Inventor
Nedeljko Tkalec
Ante Moscatelli
Dejan HoÄŤevar
TRANCAR Simon Ĺ
Original Assignee
G-1, D.O.O.
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Publication date
Application filed by G-1, D.O.O. filed Critical G-1, D.O.O.
Priority to SI200800186A priority Critical patent/SI22841A/en
Priority to PCT/SI2009/000030 priority patent/WO2010011191A1/en
Publication of SI22841A publication Critical patent/SI22841A/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
    • 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
    • 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
    • F02D19/0647—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 the gaseous fuel being liquefied petroleum gas [LPG], liquefied natural gas [LNG], compressed natural gas [CNG] or dimethyl ether [DME]
    • 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
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/32—Controlling fuel injection of the low pressure type
    • F02D41/34—Controlling fuel injection of the low pressure type with means for controlling injection timing or duration
    • 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
    • F02D41/0025—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
    • F02D41/26—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
    • 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
    • Y02T10/40—Engine management systems

Abstract

The control device (1) for electronic control of an internal combustion gasoline engine (2), which is adapted for optional operation based on liquid gas, for example propane-butane mixture, methane, natural gas etc. or gasoline, while the anticipated simple switching of using gas or gasoline as fuels can be performed by a switch (11) also during driving as well as while all standardised assemblies are used in the vehicle for the consumption of liquid gas and while even all original sensors (4), which are connected to the original control unit (3) remain the same with additional gas injectors (6) inside the suction collector (7) apart from the gasoline injectors (6a), whereas when operating the engine on gasoline only, the unmodified control unit (3) with corresponding peripheral units is used while during the use of gas as a fuel by pressing the switch (11) the operation of the gasoline injectors (6) is turned off and the operation of the corresponding gas injectors (6) along with the corresponding standardized assemblies is turned on considering that the signal which is transmitted by the control line (8) for controlling the gasoline injectors (6a) is led when using gas as fuel via switch (11) into an additional chamber (5) which in the process step for the same ignition by using the correction constant modifies the duration of the open position of the current injector (6) for the supply of gas into the engine cylinders (1) while the time of the beginning of opening the injector (6a) remains the same as defined by the original control unit.

Description

KRMILNA NAPRAVA ELEKRONSKO KRMILJENEGA BENCINSKEGA MOTORJA Z NOTRANJIM IZGOREVANJEM, PREUREJENEM ZA POLJUBEN PLINELECTRONIC CONTROLLED GASOLINE ENGINE STEERING CONTROLLER CONVERGED FOR KISS GAS

Predmet izuma [001] Predmet izuma je krmilna naprava elektronsko krmiljenega bencinskega motoija z notranjim izgorevanjem, ki je predelan za izbirno delovanje na bencin in poljuben plin, npr.: mešanico propan-butan, zemeljski plin, metan idr.FIELD OF THE INVENTION [001] The object of the invention is a control unit of an electronically controlled internal combustion gasoline moto, which is processed for optional operation on gasoline and any gas, for example: propane-butane mixture, natural gas, methane and the like.

Tehnični problem [002] Tehnični problem, ki ga rešuje izum je, kako zasnovati tako dopolnilno krmilno napravo elektronsko krmiljenega bencinskega motorja z notranjim izgorevanjem, ki bo pri predelavi bencinskega motorja na poljuben plin zagotavljal polnjenje valjev z bencinu energetsko ustrezno količino plina glede na vsakokratne pogoje delovanja motorja in zahteve voznika, pri čemer naj navedena predelava ne bo pogojevala spremembe temeljnih nastavitev delovanja motoija, zlasti tistih, ki so pri elektronsko krmiljenih motoijih določene z digitalno karto (maping), prav tako naj taka naprava ne moti ali pači delovanja originalne krmilne enote, nadalje naj bi bila taka naprava tehnično in cenovno ugodna tudi pri prireditvi manjše serije posameznega tipa vozil, celo pri samo enem vozilu nekega tipa. Seveda se pričakuje, da naj taka naprava po izumu ne biTechnical Problem [002] The technical problem to be solved by the invention is how to design such a complementary control device of an electronically controlled internal combustion engine, which in the process of processing the gasoline engine with any gas, will provide the filling of gas cylinders with an energy amount of gas according to the respective conditions engine performance and driver requirements, provided that said modification does not condition the change of the basic moto operation settings, especially those determined by digital mapping (electronically controlled motoi), nor should such device interfere with or impair the operation of the original control unit , furthermore, such a device is also technically and reasonably priced to accommodate a smaller series of individual types of vehicles, even with only one vehicle of one type. Of course, it is expected that such a device according to the invention will not

35454.doc/VII-08/Vr omejevala uporabe bencina kot goriva, pri čemer naj bi bil preklop uporabe bencina ali plina za uporabnika enostaven, kot je to znano pri obstoječih napravah z uporabo plina kot goriva. Naprava po izumu naj upošteva vse varnostne zahteve, predpise in standarde.35454.doc / VII-08 / Vr limited the use of gasoline as fuel, making switching petrol or gas easy for the user, as is known in existing installations using gas as fuel. The device according to the invention should comply with all safety requirements, regulations and standards.

Znano stanje tehnike [003] Zaradi različne energetske vrednosti bencina in utekočinjenega plina je potrebno pri predelavi motorja na utekočinjen plin pri vsakem polnjenju valja s plinsko zmesjo določiti količino plina, da se čim bolj približa energetski vrednosti bencina. Za dosego vsakokratnega polnjena posameznega valja s tako količino plina, ki bo po kalorični rednosti ustrezala sicer drugačni količina bencina je potrebno upoštevati značilnosti izbranega plina kot goriva in tudi lastnosti plinske instalacije, zlasti hitrost odpiranja in zapiranja injektorjev za krmiljeni dovod plina v sesalno cev motoija in regulator tlaka in pretoka plina v plinskem uparjalniku, ki pretvarja utekočinjen plin, ki je shranjen v jeklenki, v plin v plinastem stanju z nastavljenim tlakom.BACKGROUND OF THE INVENTION Due to the different energy values of gasoline and liquefied gas, it is necessary to determine the amount of gas in each liquefied gas cylinder refill every time the cylinder is filled with gas, in order to approximate the energy value of gasoline as much as possible. In order to achieve the respective filling of each cylinder with a quantity of gas that corresponds to an otherwise different amount of gasoline, it is necessary to take into account the characteristics of the selected gas as fuel and also the characteristics of the gas installation, in particular the speed of opening and closing the injectors for the controlled supply of gas into the intake manifold and a gas pressure and flow regulator in a gas vaporizer that converts liquid gas stored in a cylinder into a gas in a set pressure gas.

[004] Dosedanje tovrstne naprave so izvedene tako, da v celoti zamenjujejo originalno krmilno naprav z upoštevanjem značilnosti plina. Problem teh naprav je, da jih je potrebno prirediti v smislu priprave digitalne karte (maping) in glede na tovarniško predvidena tipala za vsak tip vozila posebej, kar je zamudno in drago. Za manjše serije posameznega tipa vozil, postane taka naprava tržno nekonkurenčna.Such devices have been designed to completely replace the original control devices, taking into account the characteristics of the gas. The problem with these devices is that they need to be customized in terms of digital mapping and factory-fitted sensors for each vehicle type, which is time-consuming and expensive. For smaller series of each type of vehicle, such a device becomes commercially non-competitive.

[005] Nadalje poznamo drugi tip teh krmilnih naprav, ki prevzemajo od originalne naprave sprejem vrednosti na različnih tipalih na motorju, ki jih nova digitalna karta v dodatni krmilni napravi upošteva in generira ukazne parametre, kot so začetek in čas odprtja šob za vbrizg plina v sesalne kolektorje in trenutek vžiga. Taka zasnova tovrstne krmilne naprave je sicer cenejša od zgoraj navedene, vendar še zmeraj ostane problem prireditve take naprave za manjše[005] We further know the second type of control devices, which assume from the original device the reception of values on various engine sensors, which the new digital card in the additional control device takes into account and generates command parameters, such as the start and opening time of the gas injection nozzles in intake manifolds and ignition timing. Such a design of such a control device is cheaper than the above, but it still remains a problem to make such a device smaller.

35454.doc/VII-08/Vr število istovrstnih vozil zaradi cene. Njena pomanjkljivost je v tem, da se v njej podatki, kijih tvori originalna krmilna naprava, obdelajo glede na njeno digitalno karto (maping) in se kot rezultat tvorijo krmilni ukazi. Za ta proces je potreben en ciklus v njenem mikroprocesorju. Vsled tega je vedno prisotna sistemska napaka, ki se kaže pri hitrih spremembah režima delovanja motorja, t.j. pri pospeševanju ali vožnji v klanec. Izkoristek motorja v teh stanjih se zniža.35454.doc / VII-08 / Vr number of vehicles of the same type due to price. Its disadvantage is that the data generated by the original control device is processed according to its digital map (mapping) and the control commands are formed as a result. This process requires one cycle in its microprocessor. As a result, a system error is always present, resulting in rapid changes in the engine's operating mode, i.e. when accelerating or uphill. The engine efficiency in these conditions is reduced.

1006] Glede na dejstvo, da naj bi predelave vozil na plin izvajali na že kupljenih vozilih v smislu druge vgradnje in da naj bi to izvajali pooblaščeni servisi, je pričakovati, da naj bi imel vsak servis možnost hitro predelati vozila mnogih znamk, ki se nahajajo v njegovem tržnem območju za tržno sprejemljivo ceno in na logistično in tehnično enostaven način.1006] Given the fact that the conversion of gas vehicles is to be carried out on vehicles already purchased in terms of second installation and that it is to be carried out by authorized repairers, it is to be expected that each repair shop should be able to quickly remodel vehicles of many brands located in its market area for a reasonably priced market and in a logistically and technically simple manner.

Rešitev tehničnega problema [007J Opisani tehnični problem je rešen z napravo po izumu, katere bistvena značilnost je v tem, da vključuje originalno krmilno enoto z digitalno karto (maping) brez kakršnihkoli posegov vanjo in novo dopolnilno krmilno enoto, ki pretvori krmilni signal originalne krmilne enote za trajanje odprtja injektorja za dovod plina, in sicer tako, da ga spreminja s korekcijsko konstanto, ki je odvisna od značilnosti izbranih injektoijev za vpihavanje plina v sesalni kanal. Korekcijska konstanta določa, da je energetska vrednost količine plina v vsakem vpihu v sesalni kanal enaka energetski vrednosti količine bencina v ekvivalentnem vbrizgu, kakor določa originalna krmilna enota in sicer tako, da se ta postopek izvaja znotraj vsakokratnega krmilnega koraka originalne krmilne enote, ki določa krmilni signal za bencinski injektor in da originalna krmilna enota ne zazna nikakršne spremembe ali celo motnje oziroma napake pri uporabi plina kot goriva. To velja za vsak sesalni takt.Solution to a Technical Problem [007J The technical problem described is solved by a device according to the invention, the essential feature of which is that it includes an original digital map control unit (mapping) without any interference thereto and a new complementary control unit that converts the control signal of the original control unit for the duration of the opening of the gas supply injector by varying it with a correction constant that depends on the characteristics of the gas injection injectors selected in the suction channel. The correction constant determines that the energy value of the amount of gas in each intake duct is equal to the energy value of the amount of gasoline in equivalent injection as determined by the original control unit by performing this process within the respective control step of the original control unit determining the control unit. signal for the petrol injector and that the original control unit does not detect any change or even disturbance or error in the use of gas as fuel. This applies to every suction stroke.

[008] Korekcijska konstanta je določena na osnovi značilnosti izbranih injektorjev za plin. Namreč, plinski injektorji morajo imeti bistveno večji pretok[008] The correction constant is determined based on the characteristics of the selected gas injectors. Namely, gas injectors must have a significantly higher flow rate

35454. doc/VII-08/Vr od bencinskih injektorjev, ker je volumen energetskega ekvivalenta plina glede na volumen bencina z isto energetsko vrednostjo bistveno večji. Zaradi večje konstrukcije plinskega injektorja in zaradi premagovanja tlaka, ki se pojavi na zapornem elementu v injektorju, je čas odpiranja od zaprtega stanja do popolnoma odprtega stanja zelo daljši od časa odpiranja ustreznega bencinskega injektorja. Hitrost zapiranja plinskega injektorja je zanemarljivo drugačna od hitrosti zapiranja bencinskega injektorja, ker pri zapiranju sodeluje tudi tlak plina na zaporni element v injektorju. Za potrebe pri bencinskih motoijih z elektronskim krmiljenjem lahko privzamemo, da se plinski injektor zapre trenutno. Nadalje lahko privzamemo za ta slučaj, da se bencinski injektor odpira in zapira trenutno. Ker je torej odpiranje plinskega injektorja počasnejše od bencinskega, je potrebno to dejstvo upoštevati pri tvorbi krmilnega signala za plinski injektor. Ostali krmilni parametri, ki jih tvori originalna krmilna enota, ostanejo nespremenjeni, tudi periferne enote, kot so tipala idr. in pripadajoča instalacija ostanejo originalne. Ker ne posegamo v digitalno karto originalne krmilne naprave, je sploh ni potrebno poznati pri dogradnji naprave za uporabo plina kot goriva, oziroma pri določitvi injektoijev za posamezno vozilo oziroma motor. To je pomembno zlasti pri redkejših vozilih na posameznem tržnem območju. Ker je takt mikroprocesorjev bistveno višji od taktov bencinskih motorjev z notranjim izgorevanjem, kar je odvisno o števila vrtljajev motorja, dovoljujeta mikroprocesorja originalne krmilne naprave in dopolnilne krmilne enote korekcijo signala za čas odprtosti injektorjev za plin vedno v istem mikroprocesorskem koraku. S tem je zagotovljeno, da je vsak signal za čas odprtosti injktoijev za plin, ki je enolično določen na osnovi digitalne karte in podatkov tipal, pravilno korigiran s korekcijsko konstanto v skladu z vsakokratnimi podatki tipal in temu ustrezno točko na digitalni karti krmiljenja. To je možno zato, ker je vnaprej predvidena korekcijska konstanta za vsak tip injektorjev posebej. Za nastavitev energetske vrednosti vsakokratno vbrizganega plina, ki ustreza energetski vrednosti vsakokratno vbrizganega bencina po zahtevah nespremenjene originalne krmilne naprave je predvidena ročna35454. doc / VII-08 / Vr from gasoline injectors, since the volume of the gas energy equivalent is significantly higher than the volume of gasoline with the same energy value. Due to the larger structure of the gas injector and the overcoming of the pressure that occurs on the locking element in the injector, the opening time from the closed state to the fully open state is much longer than the opening time of the corresponding gas injector. The closing speed of the gas injector is insignificantly different from the closing speed of the gas injector, since the gas pressure on the closing element in the injector is also involved in closing. For purposes of electronically controlled gasoline engines, it can be assumed that the gas injector closes immediately. Further, we can assume in this case that the gas injector opens and closes instantaneously. Therefore, since the opening of the gas injector is slower than the petrol one, this fact must be taken into account when generating the control signal for the gas injector. Other control parameters formed by the original control unit remain unchanged, including peripheral units such as sensors, etc. and the associated installation remain original. Since we do not interfere with the digital map of the original steering gear, it is not necessary to know it at all when upgrading the device to use gas as a fuel, or when determining injections for an individual vehicle or engine. This is especially important for rarer vehicles in a particular market area. Because the microprocessor clock is significantly higher than the internal combustion gasoline clock, depending on the engine speed, the microprocessors of the original control unit and the auxiliary control unit allow the signal to be corrected for the throttle open time always in the same microprocessor step. This ensures that each gas injection time signal, uniquely determined on the basis of the digital map and sensor data, is corrected correctly with a correction constant according to the respective sensor data and the corresponding point on the digital control map. This is possible because there is a predetermined correction constant for each type of injector. To adjust the energy value of the gas injected at each time, which corresponds to the energy value of the gasoline injected at each time, according to the requirements of the unchanged original control device, manual

35454.doc/VII-08/Vr nastavitev tlaka plina v injektorju. Nastavitev tlaka plina je predvidena na uparjalniku, kar je znana rešitev.35454.doc / VII-08 / Vr Setting the injector gas pressure. A gas pressure adjustment is provided on the evaporator, which is a known solution.

[009] Podrobneje bo izum pojasnjen v nadaljevanju z opisom izvedbenega primera in priložene risbe, na kateri kaže sl. 1 shematsko vezalno shemo naprave po izumu, pri graj ene k bencinskemu motoiju z notranjim izgorevanjem;[009] The invention will be explained in more detail below with a description of an embodiment and the accompanying drawing, in which FIG. 1 is a schematic wiring diagram of an apparatus according to the invention, built to a gasoline internal combustion engine;

sl. 2 primerjalni časovni diagram delovanja bencinskega in plinskega injektorja.FIG. 2 comparative timing diagram of gasoline and gas injector operation.

[0010] Krmilna naprava 1 elektronsko krmiljenega bencinskega motorja 2 z notranjim izgorevanjem, ki je predelan za izbirno delovanje na bencin ali poljuben plin, npr. zmes propan-butan, zemeljski plin ali drug plin, je zasnovana tako, da vključuje nespremenjeno originalno krmilno enoto 3 motorja 2 s tem, da ostanejo nespremenjena tudi vsa originalna tipala 4, ki so priključena nanjo, ter dodatno krmilno enoto 5, ki krmili na osnovi podatkov osnovne krmilne enote 3 plinske injektorje 6 tako, da v vsakem sesalnem taktu motorja 2 zagotavlja polnjenje vsakokratnega valja s tako količino plina, katere energetska vrednost je enaka energetski vrednosti tiste količine bencina, ki jo določi originalna krmilna naprava 3 za isti sesalni takt.[0010] The control unit 1 of an electronically controlled internal combustion gasoline engine 2 that is processed for optional gasoline or arbitrary gas operation, e.g. propane-butane, natural gas or other gas mixtures are designed to include unchanged original control unit 3 of engine 2 by keeping all original sensors 4 connected to it unchanged and an additional control unit 5 which controls the on the basis of the data of the basic control unit 3, the gas injectors 6, such that in each suction stroke of the engine 2, it guarantees the filling of the respective cylinder with a quantity of gas whose energy value is equal to the energy value of that quantity of gasoline determined by the original control device 3 for the same suction stroke.

[0011] Originalna krmilna enota 3 je tudi kot sestavni del krmilne naprave 1 predvidena za enako krmiljenje vžiga, tako da pošilja na svečke 7 visokonapetostni tok v istem trenutku glede na kot glavne gredi, kot je predvideno po njeni originalni digitalni karti (mapingu).[0011] The original control unit 3 is also provided as an integral part of the control unit 1 for the same ignition control by sending high voltage current to the spark plugs 7 at the same instant relative to the angle of the main shafts as provided by its original digital mapping.

[0012] Prav tako tvori originalna krmilna enota 3 kot sestavni del krmilne naprave 1 signal za začetek in trajanja odprtja injektorje v 6 za vbrizg plina v[0012] Likewise, the original control unit 3, as a component of the control device 1, generates a signal for the start and duration of opening of the injectors in 6 for gas injection into

35454.doc/VII-08/Vr sesalni kolektor 8 motorja 2. Ta signal je določen na osnovi digitalne karte (mapinga) v napravi 3 in podatkov, ki jih posredujejo tipala 4 na motorju 2 oziroma na sklopih, ki so nanj priključeni. Ta signal je voden po vodniku 9 v dodatno krmilno enoto 5. V istem mikroprocesorskem koraku originalne krmilne naprave 3 podaljša dodatna krmilna enota 5 s korekcijsko časovno konstanto čas odprtja injektorjev 6 za dovod plina v valje motorja 1, medtem ko ostane čas začetka odprtja injektorjev 6 isti, kot gaje določila originalna krmilna enota 2.35454.doc / VII-08 / Vessel intake manifold 8 of engine 2. This signal is determined on the basis of the digital map (mapping) in device 3 and the data transmitted by the sensors 4 on engine 2 or the assemblies attached thereto. This signal is guided through conductor 9 to additional control unit 5. In the same microprocessor step of the original control unit 3, an additional control unit 5 is extended with a correction time constant of the injector opening time 6 for supplying gas to the cylinders 1 while the injector opening start time 6 same as specified by original control unit 2.

[0013] Korekcijska konstanta je določena na osnovi privzetega izhodišča, da se bencinski injektor 6a odpre in zapre trenutno, kar se kaže v diagramu (sl. 2) tako, da opisuje odprtost injektorja 6a pravokotno polje A, medtem ko je to polje B plinskega injektorja 6 zaradi počasnejšega odpiranja oblikovano kot trapez. Površini polj A in B predstavljata količini bencina oz. plina enega vbrizga. Ker je čas odprtja injekorjev 6 različno dolg glede na vsakokratno stanje motorja, kot ga opisujejo različna tipala 4 in zahteve voznika (enakomerna vožnja, pospeševanje, vožnja v strmino, spust po strmini, idr.) in ker je hitrost odpiranja plinskega injektorja 6 konstantna, mora korekcijska konstanta prišteti k signalu za različno dolg čas polne odprtosti injektoija 6 vedno isto vrednost za čas odpiranja injektorjev 6. Korekcijo za čas zapiranja plinskega injektoija 6 glede na čas zapiranja bencinskega injektorja 6a zanemarimo zaradi neznatne razlike, ker nima dejansko vpliva na krmiljenje motorja 2. Na osnovi gornjega opisa je očitno, daje možno po analogiji zasnovati tudi korekcijski faktor za čas zapiranja injektorja 6 , če bi se pokazalo, daje potrebno.[0013] The correction constant is determined on the basis of the default assumption that the gas injector 6a opens and closes instantaneously, as shown in the diagram (Fig. 2) by describing the openness of the injector 6a perpendicular to field A while this field B is a gas Injector 6 is shaped like a trapezoid for slower opening. The surfaces of fields A and B represent the quantities of gasoline and. gas of one injection. Whereas the injector 6 opening time is different depending on the engine state as described by the various sensors 4 and the requirements of the driver (steady running, accelerating, steepening, descending, etc.) and whereas the speed of opening of the gas injector 6 is constant, the correction constant must be added to the signal for a different time of full injector opening time 6 always the same value for the injector opening time 6. The correction for the closing time of the gas injector 6 relative to the closing time of the petrol injector 6a is neglected due to the insignificant difference since it has no real effect on the engine control 2 Based on the above description, it is obvious that by analogy a correction factor for the closing time of the injector 6 can be designed, if it is shown to be necessary.

[0014] Ker imajo bencin in različni plini, ki jih lahko uporabimo kot gorivo, različne specifične energijske vrednosti, mora biti volumen izbranega goriva tak, da ostane nespremenjena energetska vrednost količine goriva za en sesalni takt enega valja ista, kot jo določa originalna krmilna naprava 3. Ker je čas zaprtja plinskega injektoija 6 določen za bencinski injektor 6a, je predvideno, da nastavimo energetski ekvivalent plinske količine z določitvijo[0014] Because gasoline and the various gases that can be used as fuel have different specific energy values, the volume of the selected fuel must be such that the unchanged energy value of the fuel quantity for one intake stroke of one cylinder is the same as that specified by the original control device 3. Since the closing time of the gas injector 6 is determined for the gas injector 6a, it is intended to set the energy equivalent of the gas quantity by determining

35454.doc/VII-08/Vr tlaka plina v injektorju. To dosežemo tako, da uporabimo tlačni regulator 9 na uparjalniku 10 plina, kije privzet kot znano stanje tehnike in se nahaja na tržišču v več izvedbah.35454.doc / VII-08 / Injector gas pressure peak. This is achieved by using a pressure regulator 9 on the gas evaporator 10, which is the default state of the art and is commercially available in several embodiments.

[0015] S tako dopolnilno krmilno enoto 5 po izumu, se bistveno zmanjša cena vgradnje celotne naprave za pogon na utekočinjen plin (tlačna posoda za utekočinjen plin, cevne instalacije, ventili, upaijalnik plina idr).With such an additional control unit 5 according to the invention, the cost of installation of the entire liquefied gas propulsion device (liquefied gas pressure vessel, piping, valves, gas blower, etc.) is significantly reduced.

[0016] Predviden je tudi enostaven preklop uporabe plina oziroma bencina kot goriva z električnim stikalom, ki omogoča to spremembo tudi med vožnjo. Tak preklop za izmenično uporabo plina ali bencina je izveden s stikalom 11, ki vodi pri uporabi bencina kot goriva signal za krmiljenje bencinskega injektoija 6a neposredno na vsakokratni injektor, medtem ko pri uporabi plina kot goriva stikalo 11 preusmeri ta signal v dodatno krmilno enoto 5, ki pretvori signal, kot je opisano zgoraj in nato krmili plinske injektorje 6. Uparjalnik 10 utekočinjenega plina, tlačna posoda in drugi elementi za celotno napravo niso podrobneje opisani in prikazani na skici, ker so privzeti oziroma uporabljeni znani tovrstni elementi, ki ustrezajo tudi standardom in varnostnim predpisom in se predpostavlja, da jih bralec opisa izuma pozna.[0016] Also provided is a simple switch between the use of gas or petrol as a fuel with an electric switch, which allows this change even while driving. Such switching for alternating use of gas or gasoline is effected by a switch 11 which, when using gasoline as a fuel, signals to control the petrol injector 6a directly to the respective injector, while when using gas as fuel, switch 11 redirects that signal to an additional control unit 5, which converts the signal as described above and then controls the gas injectors 6. The liquefied gas vaporizer 10, pressure vessel and other elements for the entire device are not described in more detail and shown in the drawing, since known or used elements of this kind are also used and meet the standards and standards. safety regulations and it is assumed that the reader of the description of the invention knows them.

[0017] Pri uporabi bencina kot goriva je uporabljena samo originalna krmilna enota 2 z vsemi pomožnimi sklopi tako, kot je predvidena tovarniško. Dodatna krmilna enota 5 in pripadajoči plinski injektorji 6 so izklopljeni. Preklop delovanja na bencin ali plin je možen tudi med vožnjo brez motečih ali za motor in vožnjo škodljivih pojavov. Ta značilnost je znana tudi pri že znanih tovrstnih napravah.[0017] When using gasoline as fuel, only the original control unit 2 with all auxiliary assemblies is used as intended at the factory. The auxiliary control unit 5 and associated gas injectors 6 are switched off. Switching to petrol or gas is also possible when driving without distractions or for the engine and driving adverse events. This feature is also known in such known devices.

Claims (3)

Patentni zahtevkiPatent claims 1. Krmilna naprava (1) elektronsko krmiljenega bencinskega motorja (2) z notranjim izgorevanjem, ki je predelan za izbirno delovanje na utekočinjen plin, npr. zmes propan-butan, metan, zemeljski plin idr. ali bencin, pri čemer je predviden enostaven preklop uporabe plina oziroma bencina kot goriva s stikalom (11) tudi med vožnjo, ter so za uporabo utekočinjenega plina v vozilu uporabljeni vsi znani standardizirani sklopi (tlačna posoda, upaijevalnik plina, cevovodi, varnostni elementi, ipd), prav tako ostanejo nespremenjena tudi vsa originalna tipala (4), ki so priključena na originalno krmilno enoto (3), dodatno pa so v sesalnem kolektoiju (7) nameščeni plinski injekorji (6) poleg bencinskih injektorjev (6a) , pri čemer je pri delovanju motorja na bencin uporabljena samo nespremenjena originalna krmilna enota (3) s pripadajočimi perifernimi enotami, medtem ko je pri uporabi plina kot goriva s stikalom (11) izklopljeno delovanje bencinskih injektoijev (6a) in vklopljeno delovanje plinskih injektoijev (6 ) in pripadajočih standardiziranih skopov, označena s tem, da v popolnosti vključuje nespremenjeno originalno krmilno enoto (3) motoija (2) s in dopolnilno krmilno enoto (5), pri čemer je signal, ki teče po krmilnem vodu (8) za krmiljenje bencinskih injektorjev (6a) pri uporabi plina kot goriva preko stikala (H) voden v dopolnilno krmilno enoto (5), ki v procesnem koraku za isti vžig z uporabo korekcijske konstante spremeni trajanje odprtja vsakokrat ustreznega injektorja (6) za dovod plina v valje motorja (1), medtem ko ostane čas začetka odprtja injektorja (6) isti, kot gaje določila originalna krmilna enota (2).An electronically controlled gasoline engine (2) control unit (1) for internal combustion, which is processed for optional liquefied gas operation, e.g. mixture of propane-butane, methane, natural gas, etc. or gasoline, providing easy switching of gas or petrol as a switch fuel (11) even while driving and using all known standard assemblies (pressure vessel, gas blower, pipelines, safety components, etc.) for the use of liquefied gas in the vehicle. ), all original sensors (4) connected to the original control unit (3) are also unchanged, and gas injectors (6) are fitted in addition to the gas injectors (6a) in the intake manifold (7). only the unchanged original control unit (3) with associated peripherals is used for petrol engine operation, while the use of gas injectors (6a) and the operation of gas injectors (6) and associated standardized ones are switched off when using gas as a fuel with the switch (11). assemblies, characterized in that they include in their entirety an unchanged original moto control unit (3) and a supplementary control unit (5), wherein the signal flowing through the control line (8) to control the gas injectors (6a) when using gas as fuel via a switch (H) is guided to a supplementary control unit (5) which, in the process step, for the same ignition using a correction constant changes the opening time of the respective injector (6) to supply gas to the engine cylinders (1), while the start time of the injector opening (6) remains the same as specified by the original control unit (2). 2. Naprava po zahtevku 1, označena s tem, da je korekcijska konstanta določena kot vrednost, ki je prišteta k vsakokratni vrednosti za dolžino odprtjaDevice according to claim 1, characterized in that the correction constant is defined as a value added to the respective value for the opening length 35454.doc/VII-08/Vr injektoga (6), kot ga določi originalna krmilna enota (2) za vsakokratni vžig posameznega valja in sicer za bencin kot gorivo.35454.doc / VII-08 / Injector tip (6) as specified by the original control unit (2) for the respective ignition of each cylinder, namely petrol as fuel. 3. Naprava po zahtevkih 1 in 2, označena s tem, da je energetski ekvivalent plinske količine, ki teče v časovni enoti skozi vsakokratni injektor (6) izenačen z energetskim ekvivalentom količine bencina, ki teče v časovni enoti skozi bencinski injektor (6a) z določitvijo tlaka plina v injektogu (6), kar je prednostno doseženo z nastavitvijo tlaka plina v upagalniku (10).Apparatus according to claims 1 and 2, characterized in that the energy equivalent of the gas quantity flowing in the time unit through the respective injector (6) is equated with the energy equivalent of the amount of gasoline flowing in the time unit through the petrol injector (6a) with determining the gas pressure in the injector (6), which is preferably achieved by adjusting the gas pressure in the igniter (10).
SI200800186A 2008-07-24 2008-07-24 Control device for electronic control of the internal combustion gasoline engine adapted to use any gas SI22841A (en)

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