ITCB20080004A1 - ELECTRIC HEATER FOR GAS, LPG OR CIRCULATING GAS IN PRESSURE REDUCERS IN AUTO BIFUEL, WITH ALTERNATIVE ENDOTHERMIC MOTORS - Google Patents

ELECTRIC HEATER FOR GAS, LPG OR CIRCULATING GAS IN PRESSURE REDUCERS IN AUTO BIFUEL, WITH ALTERNATIVE ENDOTHERMIC MOTORS Download PDF

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Publication number
ITCB20080004A1
ITCB20080004A1 IT000004A ITCB20080004A ITCB20080004A1 IT CB20080004 A1 ITCB20080004 A1 IT CB20080004A1 IT 000004 A IT000004 A IT 000004A IT CB20080004 A ITCB20080004 A IT CB20080004A IT CB20080004 A1 ITCB20080004 A1 IT CB20080004A1
Authority
IT
Italy
Prior art keywords
gas
lpg
methane
ptc thermistors
heating
Prior art date
Application number
IT000004A
Other languages
Italian (it)
Inventor
Rubbio Damiano Di
Original Assignee
Dec2001 Srl
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 Dec2001 Srl filed Critical Dec2001 Srl
Priority to IT000004A priority Critical patent/ITCB20080004A1/en
Publication of ITCB20080004A1 publication Critical patent/ITCB20080004A1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M31/00Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/02Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
    • F02M31/12Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating electrically
    • F02M31/125Fuel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/06Apparatus for de-liquefying, e.g. by heating
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/30Use of alternative fuels, e.g. biofuels

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Air-Conditioning For Vehicles (AREA)

Description

DESCRIZIONE dell' invenzione avente per TITOLO: DESCRIPTION of the invention having as TITLE:

"Riscaldatore elettrico per il gas, GPL o Metano circolante nei riduttori di pressione in auto bifuel, con motori endotermici alternativi" "Electric heater for gas, LPG or CNG circulating in pressure reducers in bifuel cars, with alternative endothermic engines"

Il sistema è costituito da una serie di Termistore PTC (1) (Positive temperature coefficient ), di seguito PTC, montati su scheda elettronica (3) o singolarmente in capsula, in base alle esigenze e alle dimensioni del riduttore. Tali PTC sono controllati elettronicamente. Essi sono utilizzati per produrre calore. Tale energia è utilizzata per favorire l'espansione del gas, gpl o metano, in un riduttore di pressione per l'alimentazione di motori endotermici alternativi. The system consists of a series of PTC thermistors (1) (Positive temperature coefficient), hereinafter PTC, mounted on the electronic board (3) or individually in a capsule, according to the needs and dimensions of the reducer. These PTCs are electronically controlled. They are used to produce heat. This energy is used to favor the expansion of gas, LPG or methane, in a pressure reducer for the supply of alternative endothermic engines.

Attualmente si possono trasformare auto monofuel con motori endotermici alternativi ad accensione comandata in auto bifuel, montando un sistema, successivamente Sistema Gas, costituito principalmente da un serbatoio, un riduttore di pressione, una unità di controllo elettronica. Attualmente i riduttori di pressione vengono riscaldati con il fluido refrigerante del sistema di raffreddamento originale dell'auto. Nel montaggio bisogna quindi intercettare il fluido refrigerante e collegare il riduttore in serie o in parallelo. Currently, monofuel cars with reciprocating endothermic engines with controlled ignition can be transformed into bifuel cars, by mounting a system, subsequently the Gas System, consisting mainly of a tank, a pressure reducer, an electronic control unit. Pressure reducers are currently heated with coolant from the car's original cooling system. During assembly, it is therefore necessary to intercept the refrigerant fluid and connect the reducer in series or in parallel.

La temperatura del fluido refrigerante è indipendente dal Sistema Gas. Infatti essa dipende dal punto in cui l'installatore ha intercettato il fluido, dalla portata del fluido refrigerante all'interno del riduttore e dalla temperatura motore. In questo tipo di installazione non si può controllare lo scambio termico tra gas in espansione e fluido refrigerante. Specie se si vuole aumentare tale scambio. The temperature of the refrigerant fluid is independent of the Gas System. In fact, it depends on the point at which the installer has intercepted the fluid, on the flow rate of the refrigerant fluid inside the reducer and on the motor temperature. In this type of installation it is not possible to control the heat exchange between the expanding gas and the refrigerant fluid. Especially if you want to increase this exchange.

Il problema di poter riscaldare a piacimento il gas all'interno del riduttore si risolve installando sul riduttore stesso un sistema attivo, che sfrutta la corrente elettrica, Si può variare la temperatura dei PTC, per variare lo scambio termico con il gas, mantenendo costante la temperatura del gas. The problem of being able to heat the gas inside the reducer at will is solved by installing an active system on the reducer itself, which exploits the electric current.The PTC temperature can be varied, to vary the heat exchange with the gas, keeping the gas temperature.

Riduzione dei tempi per il raggiungimento delia temperatura di lavoro. Mentre in precedenza bisognava attendere che si scaldasse il motore e quindi il fluido refrigerante dell'auto. Reduction of times for reaching the working temperature. While previously it was necessary to wait for the engine and therefore the car's coolant to warm up.

Non si modifica il sistema di raffreddamento originale dell'auto. The original cooling system of the car is not modified.

Si diminuisce l'invasività nell'installazione aftermarket dei kit per la trasformazione di auto da monofuel a bifuel. The invasiveness in the aftermarket installation of kits for the conversion of cars from monofuel to bifuel is reduced.

Si diminuiscono i tempi di installazione. Installation times are reduced.

Non si corre il rischio che il gas presente nel riduttore di pressione si misceli con il fluido refrigerante, come può accadere, per alcuni modelli, ed entrando in circolo nel sistema di raffreddamento dell'auto ne diminuisce l'efficacia, rischiando di provocare gravi danni. There is no risk that the gas present in the pressure reducer mixes with the refrigerant fluid, as can happen for some models, and when it enters the car's cooling system it decreases its effectiveness, risking serious damage. .

Si possono modificare riduttori di pressione attualmente in commercio con una spesa contenuta, senza riprogettare tutto il sistema. Pressure reducers currently on the market can be modified at a low cost, without redesigning the whole system.

senza collegare più il riduttore al sistema di raffreddamento dell' auto. Sul riduttore si possono installare un insieme di PTC, collegati elettricamente in serie o in parallelo. Controllando la corrente che alimenta i PTC, attraverso una ECU ( Electronic Control Unit ), si controlla la temperatura dei PTC stessi e di conseguenza lo scambio termico tra il gas all'interno del riduttore e i PTC. without connecting the reducer to the car cooling system anymore. A set of PTCs can be installed on the gearbox, electrically connected in series or in parallel. By controlling the current that feeds the PTCs, through an ECU (Electronic Control Unit), the temperature of the PTCs themselves and consequently the heat exchange between the gas inside the reducer and the PTCs are controlled.

I PTC possono essere alloggiati in una capsula forma cilindrica e opportunamente filettati (6), in modo da poterli avvitare sul corpo (2) del riduttore. La loro disposizione spaziale sarà funzione della geometria del riduttore stesso. Oppure i PTC possono essere montati su una scheda elettronica, in base alla forma geometrica del riduttore e successivamente assemblata sul riduttore. The PTCs can be housed in a cylindrical capsule and suitably threaded (6), so that they can be screwed onto the reducer body (2). Their spatial arrangement will depend on the geometry of the gearbox itself. Or the PTCs can be mounted on an electronic board, based on the geometric shape of the reducer and subsequently assembled on the reducer.

II Termistore PTC (1) ( Positive temperature co-efficient ) è un elemento ceramico che sottoposto ad una differenza di potenziale produce calore ed ha la caratteristica di autolimitare la sua temperatura che dipende unicamente dalle caratteristiche fisiche del materiale e dalla differenza di potenziale cui è sottoposto. Ha inoltre, la caratteristica di raggiungere rapidamente la temperatura di lavoro e di stabilizzarsi una volta raggiunta. La forma può essere qualsiasi, a base quadrata, rettangolare, triangolare, circolare, o di forma toroidale. The PTC thermistor (1) (Positive temperature co-efficient) is a ceramic element that, subjected to a potential difference, produces heat and has the characteristic of self-limiting its temperature which depends solely on the physical characteristics of the material and on the potential difference to which it is subjected. It also has the characteristic of rapidly reaching the working temperature and stabilizing once reached. The shape can be any, with a square, rectangular, triangular, circular, or toroidal base.

Le sedi per i PTC possono essere ricavate direttamente nel corpo del riduttore (2) in modo da ottenere la camera di espansione del gas separata fisicamente da quella in cui sono alloggiati i PTC. Il numero dipende dallo scambio di calore che si vuole ottenere e la posizione dalla forma geometrica del riduttore. Il PTC scaldandosi, scalda la parete adiacente (4). Il gas, che lambisce la parete dall'altra parte (5), riceve calore senza mai venire a contatto con il PTC e con l'ambiente che alloggia i PTC e/o la scheda elettronica. The seats for the PTCs can be obtained directly in the reducer body (2) in order to obtain the gas expansion chamber physically separated from the one in which the PTCs are housed. The number depends on the heat exchange to be obtained and the position on the geometric shape of the reducer. As the PTC warms up, it heats the adjacent wall (4). The gas, which touches the wall on the other side (5), receives heat without ever coming into contact with the PTC and with the environment that houses the PTCs and / or the electronic board.

Con l'invenzione presente si possono risolvere diversi problemi. Various problems can be solved with the present invention.

Claims (8)

RIVENDICAZIONI 1. Metodo per il riscaldamento mediante Termistori PTC del gas, gpl o metano, in un riduttore di pressione per l'alimentazione di motori endotermici alternativi. CLAIMS 1. Method for heating the gas, LPG or methane by means of PTC thermistors, in a pressure reducer for the supply of reciprocating endothermic engines. 2. Metodo per il riscaldamento del gas, gpl o metano, in un riduttore di pressione come nella rivendicazione 1 caratterizzato dal fatto che i Termistori PTC sono incapsulati ed installati mediante accoppiamento vite-madrevite. 2. Method for heating the gas, LPG or methane, in a pressure reducer as in claim 1 characterized in that the PTC thermistors are encapsulated and installed by means of a screw-nut coupling. 3. Metodo per il riscaldamento del gas, gpl o metano, in un riduttore di pressione come nella rivendicazione 1 caratterizzato dal fatto che i Termistori PTC sono montati su scheda elettronica e questa montata nel riduttore, con i Termistori PTC che si alloggiano in opportune sedi, con parete sottile, simili alla forma dei Termistori PTC stessi. 3. Method for heating the gas, LPG or methane, in a pressure reducer as in claim 1 characterized by the fact that the PTC thermistors are mounted on the electronic board and this is mounted in the reducer, with the PTC thermistors housed in suitable seats , thin-walled, similar to the shape of the PTC thermistors themselves. 4. Metodo per il riscaldamento del gas, gpl o metano, in un riduttore di pressione come nella rivendicazione 2 e 3 caratterizzato dal fatto che i Termistori PTC sono in forma di parallelepipedo. 4. Method for heating the gas, LPG or methane, in a pressure reducer as in claims 2 and 3 characterized by the fact that the PTC thermistors are in the form of a parallelepiped. 5. Metodo per il riscaldamento del gas, gpl o metano, in un riduttore di pressione come nella rivendicazione 2 e 3 caratterizzato dal fatto che i Termistori PTC sono in forma cilindrica. 5. Method for heating the gas, LPG or methane, in a pressure reducer as in claims 2 and 3 characterized in that the PTC thermistors are cylindrical in shape. 6. Metodo per il riscaldamento del gas, gpl o metano, in un riduttore di pressione come nella rivendicazione 2 e 3 caratterizzato dal fatto che i Termistori PTC sono in forma di cilindro cavo. 6. Method for heating the gas, LPG or methane, in a pressure reducer as in claim 2 and 3 characterized in that the PTC thermistors are in the form of a hollow cylinder. 7. Metodo per il riscaldamento del gas, gpl o metano, in un riduttore di pressione come nella rivendicazione 2 e 3 caratterizzato dal fatto che i Termistori PTC sono in forma piramidale. 7. Method for heating the gas, LPG or methane, in a pressure reducer as in claims 2 and 3 characterized by the fact that the PTC thermistors are in pyramid shape. 8. Metodo per il riscaldamento del gas, gpl o metano, in un riduttore di pressione come nella rivendicazione 2 e 3 caratterizzato dal fatto che i Termistori PTC sono in forma conica8. Method for heating the gas, LPG or methane, in a pressure reducer as in claims 2 and 3 characterized by the fact that the PTC thermistors are in conical shape
IT000004A 2008-11-03 2008-11-03 ELECTRIC HEATER FOR GAS, LPG OR CIRCULATING GAS IN PRESSURE REDUCERS IN AUTO BIFUEL, WITH ALTERNATIVE ENDOTHERMIC MOTORS ITCB20080004A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT000004A ITCB20080004A1 (en) 2008-11-03 2008-11-03 ELECTRIC HEATER FOR GAS, LPG OR CIRCULATING GAS IN PRESSURE REDUCERS IN AUTO BIFUEL, WITH ALTERNATIVE ENDOTHERMIC MOTORS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000004A ITCB20080004A1 (en) 2008-11-03 2008-11-03 ELECTRIC HEATER FOR GAS, LPG OR CIRCULATING GAS IN PRESSURE REDUCERS IN AUTO BIFUEL, WITH ALTERNATIVE ENDOTHERMIC MOTORS

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ITCB20080004A1 true ITCB20080004A1 (en) 2009-02-02

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IT000004A ITCB20080004A1 (en) 2008-11-03 2008-11-03 ELECTRIC HEATER FOR GAS, LPG OR CIRCULATING GAS IN PRESSURE REDUCERS IN AUTO BIFUEL, WITH ALTERNATIVE ENDOTHERMIC MOTORS

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62142853A (en) * 1985-12-18 1987-06-26 Toyota Motor Corp Regulator for gas fired engine
JPH05223014A (en) * 1992-02-07 1993-08-31 Aisan Ind Co Ltd Fuel supply device for lp gas engine
JPH06129313A (en) * 1992-10-16 1994-05-10 Toyota Motor Corp Fuel supply device for lpg internal combustion engine
JP2003328859A (en) * 2002-05-15 2003-11-19 Nikki Co Ltd Pressure regulator for lpg
EP1418332A2 (en) * 2002-11-08 2004-05-12 Still Gmbh Fuel system for a LPG engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62142853A (en) * 1985-12-18 1987-06-26 Toyota Motor Corp Regulator for gas fired engine
JPH05223014A (en) * 1992-02-07 1993-08-31 Aisan Ind Co Ltd Fuel supply device for lp gas engine
JPH06129313A (en) * 1992-10-16 1994-05-10 Toyota Motor Corp Fuel supply device for lpg internal combustion engine
JP2003328859A (en) * 2002-05-15 2003-11-19 Nikki Co Ltd Pressure regulator for lpg
EP1418332A2 (en) * 2002-11-08 2004-05-12 Still Gmbh Fuel system for a LPG engine

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