ITRM20090605A1 - LPG SUPPLY SYSTEM FOR DIESEL DIRECT INJECTION ENGINES - Google Patents
LPG SUPPLY SYSTEM FOR DIESEL DIRECT INJECTION ENGINES Download PDFInfo
- Publication number
- ITRM20090605A1 ITRM20090605A1 IT000605A ITRM20090605A ITRM20090605A1 IT RM20090605 A1 ITRM20090605 A1 IT RM20090605A1 IT 000605 A IT000605 A IT 000605A IT RM20090605 A ITRM20090605 A IT RM20090605A IT RM20090605 A1 ITRM20090605 A1 IT RM20090605A1
- Authority
- IT
- Italy
- Prior art keywords
- lpg
- ammonia
- diesel
- direct injection
- fuel
- Prior art date
Links
- 238000002347 injection Methods 0.000 title claims description 34
- 239000007924 injection Substances 0.000 title claims description 34
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 144
- 229910021529 ammonia Inorganic materials 0.000 claims description 73
- 239000000446 fuel Substances 0.000 claims description 34
- 238000002485 combustion reaction Methods 0.000 claims description 20
- 239000002283 diesel fuel Substances 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000003111 delayed effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000007792 gaseous phase Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/08—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
- F02D19/10—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels peculiar to compression-ignition engines in which the main fuel is gaseous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
- F02M43/04—Injectors peculiar thereto
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
- F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
- F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
- F02M45/08—Injectors peculiar thereto
- F02M45/086—Having more than one injection-valve controlling discharge orifices
-
- 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
- F02D41/0047—Controlling exhaust gas recirculation [EGR]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/95—Fuel injection apparatus operating on particular fuels, e.g. biodiesel, ethanol, mixed fuels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Description
Impianto di alimentazione di GPL/Ammoniaca per motori diesel ad iniezione diretta . LPG / Ammonia fuel system for direct injection diesel engines.
I costruttori di motori a benzina/diesel sono attualmente sempre più orientati verso l’alimentazione ad iniezione diretta comandata da centraline elettroniche, le quali hanno strategie sempre più sofisticate necessarie sia per ottimizzare l’alimentazione dei motori, ottenendo con facilità la migliore combustione possibile e di conseguenza anche le minor emissioni di particelle incombuste allo scarico, sia perché le marmitte catalitiche e le sonde, di cui sono provviste, non potrebbero funzionare con motori la cui alimentazione ad iniezione non fosse governata da una centralina elettronica. The manufacturers of petrol / diesel engines are currently increasingly oriented towards direct injection powering controlled by electronic control units, which have increasingly sophisticated strategies necessary both to optimize the power supply of the engines, easily obtaining the best possible combustion and consequently also the lower emissions of unburnt particles in the exhaust, both because the catalytic converters and the probes, with which they are fitted, could not work with engines whose injection power supply was not governed by an electronic control unit.
Recentemente, a causa del prezzo elevato della benzina e del gasolio che alimenta i motori diesel, del tasso di inquinamento in continua crescita in particolare nelle grandi aree urbane, e della risonanza che stanno avendo i problemi ambientali causati dall’inquinamento, viene richiesto sempre più spesso che auto, anche nuove di fabbrica, abbiano la possibilità di essere alimentate oltre che a bénzina/gasolio anche con il GPL/Ammoniaca. Recently, due to the high price of gasoline and diesel fuel that powers diesel engines, the ever-increasing rate of pollution especially in large urban areas, and the resonance that the environmental problems caused by pollution are having, more and more often that cars, even new ones from the factory, have the possibility of being fueled not only with gasoline / diesel oil but also with LPG / ammonia.
La trasformazione a GPL/Ammoniaca di questi motori, comporta notevoli difficoltà in quanto è impossibile riprodurre le strategie di alimentazione richieste dagli stessi perché dotati di particolari iniettori che oltretutto funzionano a pressioni molto elevate. The conversion to LPG / Ammonia of these engines involves considerable difficulties as it is impossible to reproduce the fueling strategies required by them because they are equipped with particular injectors which, moreover, operate at very high pressures.
Data la richiesta, alcuni costruttori di impianti hanno trasformato a GPL in fase gassosa i motori a benzina ad iniezione diretta ma per ottenere il loro funzionamento sono dovuti scendere a compromessi, iniettando una quantità di circa il 30% di GPL in fase gassosa nel collettore di aspirazione insieme aH’aria , ottenendo così una miscela di carburante composta dal 70% circa di carburante gasolio ed il 30% di GPL, abbattendo le emissioni inquinanti ma ottenendo uno scarso risparmio sul costo del carburante. Lo scarso risparmio è determinato dal fatto che se il GPL viene iniettato nel collettore di aspirazione insieme alTaria , quando viene compresso si auto accende in anticipo e la percentuale di gasolio che rallenta il processo di accensione non può essere inferiore al 70% circa. Given the demand, some plant manufacturers have converted direct injection gasoline engines to LPG in the gaseous phase but to obtain their operation they had to make compromises, injecting a quantity of about 30% of LPG in the gaseous phase into the collector. suction together with air, thus obtaining a fuel mixture composed of approximately 70% of diesel fuel and 30% of LPG, reducing polluting emissions but obtaining little savings on the cost of fuel. The low saving is determined by the fact that if the LPG is injected into the intake manifold together with the air, when it is compressed it ignites in advance and the percentage of diesel that slows down the ignition process cannot be less than about 70%.
In alternativa alla miscela con percentuale prevalente di carburante gasolio su GPL alla quale si è accennato prima, sono state proposte modifiche ai pistoni ed alla testata del motore, integrando nella testata le candele per ottenere l’accensione in maniera simile ai motori a benzina ; questa soluzione comporta ovviamente un notevole aggravio dei costi che rende la trasformazione poco conveniente. As an alternative to the mixture with a prevalent percentage of diesel fuel over LPG mentioned above, modifications have been proposed to the pistons and the head of the engine, integrating the spark plugs into the cylinder head to obtain ignition in a similar way to gasoline engines; this solution obviously entails a considerable increase in costs which makes the transformation not very convenient.
Secondo il presente trovato, l'impianto di alimentazione a GPL/Ammoniaca del motore viene integrato con una pompa ad alta pressione che alimenta gli iniettori GPL ammoniaca con carburante ad alta pressione i quali iniettano il carburante direttamente nella camera di combustione del motore ; gli iniettori GPL ammoniaca operano in abbinamento gli iniettori del gasolio e aH’impianto di alimentazione del gasolio originale del motore. According to the present invention, the LPG / Ammonia fuel system of the engine is integrated with a high pressure pump which supplies the LPG ammonia injectors with high pressure fuel which inject the fuel directly into the combustion chamber of the engine; the ammonia LPG injectors work in conjunction with the diesel fuel injectors and the original diesel fuel system of the engine.
Secondo il presente trovato, il carburante GPL/ammoniaca ed il carburante gasolio sono iniettati nella camera di combustione del motore in quantità prescelte e con i tempi opportuni .regolati dalla centralina elettronica di regolazione e comando delle strategie del carburante GPL/ammoniaca , ciò consente di iniettare il carburante GPL /Ammoniaca , nella camera di combustione del motore con il ritardo necessario rispetto al diesel. According to the present invention, the LPG / ammonia fuel and the diesel fuel are injected into the combustion chamber of the engine in pre-selected quantities and with the appropriate times regulated by the electronic control unit for regulating and controlling the LPG / ammonia fuel strategies, this allows to inject the LPG / Ammonia fuel into the combustion chamber of the engine with the necessary delay compared to the diesel.
La strategia dei tempi di iniezione del carburante GPL/ammoniaca brevemente descritta, evita che l’accensione del « carburante GPL /ammoniaca avvenga quando 11 pistone non ha ancora raggiunto il punteL morto superiore, scongiurando Ta possibilità che il motore funzioni in modo irregolare. The strategy of the injection times of the LPG / ammonia fuel described briefly, prevents the ignition of the "LPG / ammonia fuel from occurring when the piston has not yet reached the upper dead point, avoiding the possibility of the engine running irregularly.
L’alimentazione dei carburanti gasolio / GPL/ ammoniaca direttamente nella camera di combustione del motore può avvenire secondo il presente trovato , invece che per mezzo dei normali iniettori utilizzati nel settore, attraverso iniettori dotati di doppio canale di alimentazione e di doppio ugello di iniezione ; in detti iniettori un ugello di iniezione riceve il gasolio attraverso il canale di alimentazione preposto ed il secondo ugello di iniezione riceve il GPL /ammoniaca attraverso il canale preposto; il canale di alimentazione dell’ugello GPL ammoniaca riceve il carburane da un iniettore GPL/ammoniaca in linea con esso; i due ugelli di iniezione ed i rispettivi canali di alimentazione sono realizzati in un unico corpo iniettore che sostituisce l’iniettore del gasolio in dotazione al motore .permettendo di alimentare il motore diesel con carburante GPL ammoniaca senza creare nel motore una nuova sede per l’iniettore GPL/ammoniaca. The supply of diesel / LPG / ammonia fuels directly into the combustion chamber of the engine can take place according to the present invention, instead of by means of the normal injectors used in the sector, through injectors equipped with double feeding channels and double injection nozzles; in said injectors an injection nozzle receives the diesel fuel through the provided feeding channel and the second injection nozzle receives the LPG / ammonia through the provided channel; the feed channel of the LPG ammonia nozzle receives the fuel from an LPG / ammonia injector in line with it; the two injection nozzles and the respective feeding channels are made in a single injector body which replaces the diesel injector supplied with the engine. LPG / ammonia injector.
Il trovato verrà ora descritto in una forma realizzativa non limitativa data con riferimento ai disegni allegati in cui: The invention will now be described in a non-limiting embodiment given with reference to the attached drawings in which:
la fig. 1 mostra lo schema deirimpianto diesel / GPL- ammoniaca liquida ad alta pressione nel quale il funzionamento del motore avviene con i due carburanti e gestito con le percentuali stabilite per ogni carburante fig. 1 shows the diagram of the high-pressure liquid ammonia / diesel / LPG system in which the engine operates with the two fuels and is managed with the percentages established for each fuel.
la fig. 2 mostra lo schema dell’impianto GPL .ammoniaca liquida ad alta pressione per motori diesel ad iniezione diretta, nel quale il funzionamento del motore avviene soltanto con il GPL/ammoniaca. fig. 2 shows the layout of the LPG system. Liquid ammonia at high pressure for direct injection diesel engines, in which the engine operates only with LPG / ammonia.
La fig. 3 mostra lo schema dilniettore diesel /GPL ammoniaca in un unico corpo Fig. 3 shows the diagram of the diesel / LPG ammonia injector in a single body
La fig. 4 mostra un secondo schema di iniettore diesel /GPL ammoniaca in un unico corpo. Fig. 4 shows a second diagram of a diesel / LPG ammonia injector in a single body.
Secondo il presente trovato l'impianto è composto da : According to the present invention, the plant is composed of:
una centralina elettronica (1) di regolazione e comando delle strategie di funzionamento; an electronic control unit (1) for regulating and controlling the operating strategies;
un serbatoio GPL/ammoniaca (2) an LPG / ammonia tank (2)
una pompa GPL/ ammoniaca (3) an LPG / ammonia pump (3)
una elettrovalvola (4) di mandata del GPL /ammoniaca an LPG / ammonia delivery solenoid valve (4)
una pompa ad alta pressione (5) GPL/ammoniaca a high pressure pump (5) LPG / ammonia
un rail iniettori (6) GPL/ammoniaca an injector rail (6) LPG / ammonia
un cablaggio comando (7) iniettori GPL /ammoniaca a control harness (7) for LPG / ammonia injectors
un sensore (8) di alta pressione GPL /ammoniaca an LPG / ammonia high pressure sensor (8)
un serbatoio diesel (9) in dotazione al veicolo a diesel tank (9) supplied with the vehicle
una pompa diesel (10) in dotazione al veicolo a diesel pump (10) supplied with the vehicle
una pompa ad alta pressione diesel (11) in dotazione al veicolo a diesel high pressure pump (11) supplied with the vehicle
una centralina elettronica (12) in dotazione al veicolo an electronic control unit (12) supplied with the vehicle
un rail di iniettori diesel (13) in dotazione al veicolo a diesel injector rail (13) supplied with the vehicle
Secondo il presente trovato gli iniettori del GPL /ammoniaca (6) ricevono il carburante GPL/ ammoniaca dall’impianto ad alta pressione del GPL/ammoniaca che prevede la presenza della pompa GPL/ammoniaca (5). Gli iniettori del GPL ammoniaca (6) iniettano il carburante direttamente nella camera di combustione del motore con le stesse modalità utilizzate per il diesel.<~>_ _ Durante il funzionamento del motore a GPL/ammoniaca , la centralina elettronica di regolazione e comando delle strategie (1) gestisce in maniera sincrona la strategia di funzionamento della pompa ad alta pressione (5) che alimenta gli iniettori del carburante GPL/ammoniaca (6) e la strategia di carburazione del sistema di iniezione del gasolio in dotazione al veicolo . In particolare la centralina elettronica di regolazione e comando delle strategie (1) agisce, in funzione dei parametri scelti per il funzionamento dalla centralina elettronica (12) del veicolo, con lo scopo di garantire le quantità di carburante in funzione della quantità prestabilita di carburante GPL ammonica e gasolio da iniettare nella camera di combustione del motore, ad esempio 20% gasolio e 80% GPL/ ammoniaca, e sui tempi di iniezione nella camera di combustione del singolo carburante. According to the present invention, the LPG / ammonia injectors (6) receive the LPG / ammonia fuel from the high pressure LPG / ammonia system which provides for the presence of the LPG / ammonia pump (5). The ammonia LPG injectors (6) inject the fuel directly into the combustion chamber of the engine in the same way as for diesel. <~> _ _ During the operation of the LPG / ammonia engine, the electronic control unit for regulation and control of the strategies (1) synchronously manages the operating strategy of the high pressure pump (5) that feeds the LPG / ammonia fuel injectors (6) and the carburetion strategy of the diesel injection system supplied with the vehicle. In particular, the electronic control unit for regulation and control of the strategies (1) acts, according to the parameters chosen for operation by the vehicle's electronic control unit (12), with the aim of guaranteeing the quantities of fuel according to the predetermined quantity of LPG fuel. ammonia and diesel fuel to be injected into the combustion chamber of the engine, for example 20% diesel and 80% LPG / ammonia, and on the injection times in the combustion chamber of the single fuel.
Il presente trovato consente iniettare, direttamente nella camera di combustione del motore, il carburante gasolio quando i pistoni durante la corsa hanno raggiunto una posizione prestabilita, ed il carburante GPL/ammoniaca quando i pistoni durante la loro corsa hanno raggiunto una seconda posizione in modo da evitare l’autoaccensione del GPL ammoniaca in anticipo. The present invention allows the diesel fuel to be injected directly into the combustion chamber of the engine when the pistons have reached a predetermined position during their stroke, and the LPG / ammonia fuel when the pistons have reached a second position during their stroke, so as to avoid self-ignition of ammonia LPG in advance.
La possibilità di stabilire i tempi di iniezione dei carburanti iniettati dagli iniettori del gasolio e dagli iniettori GPL ammoniaca nelle camere di combustione del motore, comporta il grande vantaggio di poter iniettare il GPL ammoniaca nell’ attimo in cui il gasolio, che ha un tempo di accensione più lungo , è nella fase di accensione in tal modo si evitano irregolarità di funzionamento e perdite di potenza del motore. _ _ L’alimentazione delle camere<'>di combustione del motore con i carburanti gasolio /gpl ammonica nelle quantità e nei tempi regolati dalla centralina (1) di regolazione delle strategie avviene , in una forma di attuazione preferita , per mezzo degli iniettori mostrati nelle fig. 3 e 4 ,per mezzo dei quali con un unico iniettore per camera di combustione è possibile iniettare sia il carburante gasolio che il carburante GPL/ammonica , evitando le lavorazioni altrimenti necessarie per ricavare il secondo alloggiamento per l’iniettore GPL/ammoniaca. The possibility of establishing the injection times of the fuels injected by the diesel injectors and by the LPG ammonia injectors in the combustion chambers of the engine, has the great advantage of being able to inject the ammonia LPG in the moment in which the diesel fuel, which has a time of longer ignition, it is in the ignition phase, thus avoiding operating irregularities and loss of engine power. _ _ The fueling of the combustion chambers <'> of the engine with diesel / ammonium LPG fuels in the quantities and times set by the strategy control unit (1) takes place, in a preferred embodiment, by means of the injectors shown in figs. 3 and 4, by means of which with a single injector per combustion chamber it is possible to inject both the diesel fuel and the LPG / ammonia fuel, avoiding the processing otherwise necessary to obtain the second housing for the LPG / ammonia injector.
Tali iniettori presentano nel corpo (14), due condotti (15,16) separati, che terminano ognuno con un ugello di iniezione (17,18) . These injectors have in the body (14) two separate ducts (15,16), each ending with an injection nozzle (17,18).
Il condotto (16) è collegato direttamente all’iniettore del gasolio alloggiato nel corpo (14) e termina con l’ugello di iniezione (17) , mentre il condotto (15) , è collegato attraverso il condotto (20) , che è solidale in una sede opportuna ricavata nel corpo (14) all’iniettore del GPL ammoniaca (19) che, come è facile vedere dalle figure 3 e 4 ,è disposto esternamente rispetto alla camera di combustione e in sostanza a monte del corpo (14). The duct (16) is connected directly to the diesel injector housed in the body (14) and ends with the injection nozzle (17), while the duct (15) is connected through the duct (20), which is integral in a suitable seat obtained in the body (14) for the ammonia LPG injector (19) which, as it is easy to see from Figures 3 and 4, is arranged externally with respect to the combustion chamber and essentially upstream of the body (14).
Il posizionamento degli ugelli di iniezione (17,18) nel corpo (14) degli iniettori può variare a seconda del tipo di iniettore del gasolio, nelle fig. 3 e 4 sono mostrate a solo titolo di esempio due possibili posizionamenti degli iniettori (17 e18). The positioning of the injection nozzles (17,18) in the body (14) of the injectors can vary according to the type of diesel injector, in figs. 3 and 4 show two possible positions of the injectors (17 and 18) only by way of example.
Il vantaggi che derivano dagli iniettori descritti sono l'eliminazione della necessità di realizzare sulla testata del motore le sedi per l’alloggiamento degli iniettori GPL/ammoniaca<'>e la migliore miscelazione nella camera di combustione dei carburanti gasòlio -GPL/ ammonica durante l’alimentazione mista. The advantages deriving from the injectors described are the elimination of the need to make the seats on the engine head for housing the LPG / ammonia injectors <'> and better mixing in the combustion chamber of the diesel -GPL / ammonia fuels during the mixed feeding.
Nel caso di funzionamento a solo gasolio tutte le funzioni di carburazione ed alimentazione del motore sono comandate dalla centralina elettronica (12) in dotazione al veicolo . In the case of operation with diesel only, all the carburation and fueling functions of the engine are controlled by the electronic control unit (12) supplied with the vehicle.
E stato sperimentato che grazie alla presenza della centralina elettronica (1) di regolazione e comando delle strategie dì funzionamento dell’impianto è possibile, come si può rilevare dalla fig. 2 , alimentare un motore diesel ad iniezione diretta con il solo carburante GPL It has been experienced that thanks to the presence of the electronic control unit (1) for regulating and controlling the operating strategies of the system, it is possible, as can be seen from fig. 2, power a direct injection diesel engine with LPG fuel only
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT000605A ITRM20090605A1 (en) | 2009-11-20 | 2009-11-20 | LPG SUPPLY SYSTEM FOR DIESEL DIRECT INJECTION ENGINES |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT000605A ITRM20090605A1 (en) | 2009-11-20 | 2009-11-20 | LPG SUPPLY SYSTEM FOR DIESEL DIRECT INJECTION ENGINES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ITRM20090605A1 true ITRM20090605A1 (en) | 2011-05-21 |
Family
ID=42124442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT000605A ITRM20090605A1 (en) | 2009-11-20 | 2009-11-20 | LPG SUPPLY SYSTEM FOR DIESEL DIRECT INJECTION ENGINES |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | ITRM20090605A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3669059A4 (en) * | 2017-08-14 | 2021-07-28 | Lars Harald Heggen | Zero emission propulsion systems and generator sets using ammonia as fuel |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2213686A5 (en) * | 1973-01-10 | 1974-08-02 | Snam Progetti | |
| WO1987001163A1 (en) * | 1985-08-24 | 1987-02-26 | Gaspower International Limited | Dual fuel compression ignition engine |
| US4742801A (en) * | 1987-08-13 | 1988-05-10 | Erik Kelgard | Dual fuel mobil engine system |
| EP0546985A1 (en) * | 1991-12-10 | 1993-06-16 | New Sulzer Diesel Ag | Fuel injection valve for a reciprocating internal combustion engine optionally operating on diesel oil or on a gaseous fuel |
| GB2388403A (en) * | 2002-04-08 | 2003-11-12 | Autogas Diesel Ltd | Electronically controlled dual fuel diesel/LPG fuel system for an i.c. engine |
| WO2004097196A1 (en) * | 2003-04-30 | 2004-11-11 | I.Co.M. S.P.A. | An lpg fuel system for petrol injection engines |
| WO2008000095A1 (en) * | 2006-06-29 | 2008-01-03 | The University Of British Columbia | Concurrent injection of liquid and gaseous fuels in an engine |
| WO2009098728A1 (en) * | 2008-02-06 | 2009-08-13 | Icomet Spa | System for supply of lpg/ammonia for direct-injection petrol or diesel engines |
-
2009
- 2009-11-20 IT IT000605A patent/ITRM20090605A1/en unknown
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2213686A5 (en) * | 1973-01-10 | 1974-08-02 | Snam Progetti | |
| WO1987001163A1 (en) * | 1985-08-24 | 1987-02-26 | Gaspower International Limited | Dual fuel compression ignition engine |
| US4742801A (en) * | 1987-08-13 | 1988-05-10 | Erik Kelgard | Dual fuel mobil engine system |
| EP0546985A1 (en) * | 1991-12-10 | 1993-06-16 | New Sulzer Diesel Ag | Fuel injection valve for a reciprocating internal combustion engine optionally operating on diesel oil or on a gaseous fuel |
| GB2388403A (en) * | 2002-04-08 | 2003-11-12 | Autogas Diesel Ltd | Electronically controlled dual fuel diesel/LPG fuel system for an i.c. engine |
| WO2004097196A1 (en) * | 2003-04-30 | 2004-11-11 | I.Co.M. S.P.A. | An lpg fuel system for petrol injection engines |
| WO2008000095A1 (en) * | 2006-06-29 | 2008-01-03 | The University Of British Columbia | Concurrent injection of liquid and gaseous fuels in an engine |
| WO2009098728A1 (en) * | 2008-02-06 | 2009-08-13 | Icomet Spa | System for supply of lpg/ammonia for direct-injection petrol or diesel engines |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3669059A4 (en) * | 2017-08-14 | 2021-07-28 | Lars Harald Heggen | Zero emission propulsion systems and generator sets using ammonia as fuel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9482168B2 (en) | Mid-cycle fuel injection strategies | |
| CN100510340C (en) | Fuel feeding method of automatic igniting four-stroke internal combustion engine | |
| US9695737B2 (en) | Prechamber system | |
| CN101260846B (en) | Hydrogen engines and its burnt gas jet method | |
| US9334812B2 (en) | Fuel supply control system for multi-fuel internal combustion engine | |
| ITTO970933A1 (en) | METHOD OF INJECTION CONTROL IN AN INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE SUITABLE TO OPERATE SELECTIVELY WITH PETROL OR GAS FUEL INJECTION AND RELATED INJECTION SYSTEM. | |
| WO2006079172A1 (en) | Fuel injection system for internal combustion engine | |
| US20140114552A1 (en) | Combined fueling strategy for gaseous fuel | |
| CN102418614A (en) | Fuel injection control system of flexible fuel engine | |
| US20140116388A1 (en) | Fuel system retrofit kit for an engine | |
| CN110080915B (en) | Gas/liquid dual-fuel low-pressure direct injection system | |
| CN105673281A (en) | Gas/liquid dual fuel in-cylinder/out-cylinder double-injection device and control method | |
| RU2010116511A (en) | INTERNAL COMBUSTION ENGINE POWER SYSTEM AND METHOD OF ITS OPERATION | |
| ITRM20090605A1 (en) | LPG SUPPLY SYSTEM FOR DIESEL DIRECT INJECTION ENGINES | |
| CN105134401A (en) | Natural gas engine air cylinder cover assembly suitable for multi-point injection system | |
| ITRM20120203U1 (en) | LPG SUPPLY SYSTEM FOR AMMONIA FOR DIESEL DIRECT INJECTION ENGINES | |
| CN214366432U (en) | Air supply system for pre-combustion chamber and engine with air supply system | |
| CN206071733U (en) | A kind of new-typed gasoline engine in-cylinder direct-jet combustion system | |
| CN205744166U (en) | A kind of in-cylinder direct-jet gasoline and natural gas hybrid fuel system | |
| CN201236754Y (en) | Hydrogen engine | |
| CN103790718A (en) | Marine dual-fuel/gas engine multipoint multi-stage injection system | |
| JP2014058882A (en) | Supply method of gas fuel to engine, and engine with improved output using the same | |
| CA2848849C (en) | Multi-fuel injection system and method | |
| JP2864526B2 (en) | Dual fuel diesel engine | |
| US20150059340A1 (en) | Engine having an air box baffle |