WO2014070027A1 - Réchauffeur d'appoint de démarrage pour le régulateur de pression et vaporiseur dans les installations automobiles d'alimentation en gaz et procédé de réchauffage d'appoint de démarrage dans les installations automobiles d'alimentation en gaz - Google Patents

Réchauffeur d'appoint de démarrage pour le régulateur de pression et vaporiseur dans les installations automobiles d'alimentation en gaz et procédé de réchauffage d'appoint de démarrage dans les installations automobiles d'alimentation en gaz Download PDF

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Publication number
WO2014070027A1
WO2014070027A1 PCT/PL2013/000137 PL2013000137W WO2014070027A1 WO 2014070027 A1 WO2014070027 A1 WO 2014070027A1 PL 2013000137 W PL2013000137 W PL 2013000137W WO 2014070027 A1 WO2014070027 A1 WO 2014070027A1
Authority
WO
WIPO (PCT)
Prior art keywords
heater
vaporizer
pressure regulator
supporting
installations
Prior art date
Application number
PCT/PL2013/000137
Other languages
English (en)
Inventor
Spółka Akcyjna AC
Bogdan KUŹMA
Original Assignee
Spółka Akcyjna AC
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
Priority claimed from PL401444A external-priority patent/PL222912B1/pl
Priority claimed from PL40577113A external-priority patent/PL405771A1/pl
Application filed by Spółka Akcyjna AC filed Critical Spółka Akcyjna AC
Publication of WO2014070027A1 publication Critical patent/WO2014070027A1/fr

Links

Classifications

    • 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
    • F02M21/06—Apparatus for de-liquefying, e.g. by heating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Definitions

  • the present invention is the supporting-start-up heater for the pressure regulator and vaporizer in automotive gas fuelling installations and the method of supporting-start-up heating of in automotive gas fuelling installations.
  • LPG/CNG/LNG gas fuel installations for internal combustion engines shall ensure unproblematic operation on gas during start-up of the cold engine. As shown in practice, it is difficult or even impossible.
  • cold engine start-up is done on gasoline, while as the engine temperature raises the temperature of pressure ' regulator and vaporizer also raises, causing better heating and vaporization of gas fuel, which in turn enables switching the engine operation into gas fuel.
  • the way to quicken gas vaporization is the additional heating of pressure regulato.r and vaporizer, for example with heating elements included therein, as shown for example in EP 1 455 077 A2. It occurs that, such constructed pressure regulators and vaporizers are complicated structures and therefore expensive in manufacturing and may not be used in existing automotive gas fuelling installations, as their complementary component or improvement .
  • the second object of the invention is to create the method of supporting- start-up heating of the . gas fuelling installation with the described supporting-start-up heater.
  • the object of the supporting-start-up heater was achieved by creating the supporting-start-up heater in form of a body of any shape made of the material having good heat transfer properties, advantageously aluminum or copper, especially in the shape adapted at least to the surface of pressure regulator and vaporizer, while the body is equipped with at least one heating element and temperature sensor and at least the front surface of the body or its part, is covered with thermal shield.
  • thermal . shield is made of the temperature resistant material.
  • the body of the invention includes a chamber, the bore of which leads to the contact surface and includes a lubricant fitting, supplying the thermo conductive mean of the heat transfer value > 2,8 W/m-k to the contact surface, which is connected to every heating element.
  • the contact surface of the body shall have appropriate recessions, forming the connection between the lubricant fitting and the channels leading to the chambers, in which the heating element is situated.
  • thermo conductive mean is a grease or a bond.
  • the heater and the pressure regulator and vaporizer form together a montage kit, equipped with mounting clamps .
  • Body of the heater is adapted to different shapes and sizes of pressure regulators and vaporizers covers.
  • An object of the invention in relation to the supporting- start-up heating method, with the use of supporting-start-up heater in automotive LPG/CNG/LNG gas fuelling installations, is achieved by supplying the heat from the supporting-startup heater to the pressure regulator and vaporizer before start-up, during start-up and after start-up of the engine, in order to heat and vaporize gas fuel, after setting the gas fuel dose, independently from the gasoline injection times for particular stages of engine operation.
  • the advantage of the invention is obtaining the additional heat' for the ⁇ direct heating of gas fuel flowing in the area of pressure regulator and vaporizer cover, in automotive gas fuelling installations, in case they are not equipped in special, additional electrically heated pressure regulators and vaporizers. It is also significant that the heater construction is simple and ensures high efficiency of heat transfer between the heater and pressure regulator and vaporizer, remaining on unchanged level during the whole period of operation and that it ensures the capability of heat accumulation over long time period, which is important in case of low temperatures.
  • the heater may be used or easily adapted to the state of art pressure regulators and vaporizers.
  • the amount of heat lead to the heater is determined so, as on one hand not to load excessively the electricity generation process, necessary for engine and vehicle operation and on the other hand ensure the necessary heat dose, enabling to obtain the optimal conditions for engine operation on gas fuel within a short time.
  • the amount of heat is obtained by manufacturing the heater of the material of good heat transfer properties, cheap and simple in treatment, so as it's contact surface can be adapted to the mounting spot on other pressure regulator and vaporizer.
  • the heater is mounted on the pressure regulator and vaporizer cover in such way, so as not to limit the aces to the bolts mounting the pressure regulator and vaporizer cover, the technical inspection of pressure regulator and vaporizer are not obstructed.
  • Fig. 1 shows a schematic, partially cross-section, view of the pressure regulator and vaporizer with the heater
  • Fig. 2 shows the gas fuelling installation diagram for Fig. 1
  • Fig. 3 shows the supporting-start-up heater itself
  • Fig. 4 shows the supporting-start-up heater in perspective
  • Fig. 5 shows the top view of the kit of Fig. 4
  • Fig.6 shows the longitudinal section of the supporting-start-up heater and the cover of the pressure regulator and vaporizer of Fig.4
  • Fig. 7 shows the view of the montage kit consisting of the supporting-start-up heater and the pressure regulator and vaporizer of Fig. 4.
  • the object of the supporting-start-up heater of the invention is to generate additional heat for the direct heating of gas fuel, flowing in the area of : the cover of the pressure regulator and vaporizer in automotive gas fuelling installations, in which pressure regulators and vaporizers are not equipped with special, additional electric heating.
  • Heating the gas fuel directly in the pressure regulator and vaporizer significantly quickens vaporization of gas fuel therein, both before the start-up of internal combustion engine, during the start-up and after its start-up, when the engine runs at full load, operates in unfavorable thermal conditions.
  • Same time gas fuel dose is set - independently from the gasoline injection times for particular stages of engine operation, in order to ensure engine operation on gas fuel.
  • Fig. 1 shows a concept of additional heating of the pressure regulator and vaporizer 5 with the use of supporting- start-up heater 1, referred below as heater.
  • Heater 1 is mounted on the pressure regulator and vaporizer 5 and especially on its cover.
  • Heater 1 consists of the body 2, including electric heating elements 3, presented as glow tubes. Heat from glow tubes 3 is conducted with conductive means in form of thermal grease A, as described below.
  • the body 2 includes appropriate channels 4, leading the thermal grease ⁇ to glow plugs 3 and the contact surface of the body 2 of pressure regulator and vaporizer 5.
  • Temperature sensor 6 is connected to the controller 7, which controls the operation of glow plugs 3, after the engine reaches certain temperature it starts, the solenoid valve 8 and cooperates with the controller 10 in order to set the gas fuel dose during start-up and heating up of the engine.
  • Method of supporting-start-up heating with the use of heater 1 basing upon supplying the heat from the heater, before internal combustion engine start-up, during its startup and after its start-up, in order to heat and vaporize the gas fuel flowing in the area of the pressure regulator and vaporizer cover, while setting the gas fuel dose independently from the gasoline injection times.
  • Figs. 3 - 6 show further improvements of the heater of Fig. 1.
  • Fig.. 3 shows one possible construction of the heater 10, which is of any shape, made of thermo conductive material, for example aluminum, copper, which shape is adapted to the front surface of pressure regulator and vaporizer and installed on its. cover in a way it does not obstruct the access to the bolts mounting the cover to pressure regulator and vaporizer body.
  • This shape constitutes the body 11, on the side surface of which there is at least one electric heating element 3 installed, which can be in form of glow plug, spiral wire, power resistor, semi-conductor or similar (Fig. 3 shows two glow plugs 3 ) .
  • Body 11 includes contact surface 12, directly in contact with the front surface of the cover of pressure regulator and vaporizer 5 (not shown) . However this is not necessary. Heater 10 is mounted to the cover of pressure regulator and vaporizer with bolts, also not shown.
  • Thermal shield B made of the material resistant to high temperatures, described further below.
  • the body 11 includes chamber 15, in which grease nipple is mounted, the borehole of which leads to the contact surface 12.
  • the gap 14 In the area between chambers 13, in which glow plugs 3 are mounted and contact surface 12, there is a connection for the thermal grease, formed by the gap 14.
  • gap 14 is used also for unproblematic montage of the body 11 on the cover of pressure regulator and vaporizer 5.
  • the embodiment of the heater 20, shown on Figs. 4 - 6 includes body 21, appropriate for the concept of the heater 1 shape in reference to Fig. 1.
  • Shape of the body 21 results from the shape of the front surface of the cover 41 of pressure regulator and vaporizer 40 and especially from the fact that the surface is shaped with radial reinforcement fins 41.1.
  • the whole surface of the body 21 is not adhering to the cover 41, but is in contact through respective radial recesses and indirectly through said thermal grease A of heat transfer value >2,8 W/m-k, in form of thermal grease or thermal bond, which fills all empty spaces, as further described in relation to Fig. 5 and especially Fig. 6.
  • Heater 20, and especially its body 21 is mounted on the cover 41 of the pressure regulator and vaporizer 40 with bolts 30 (Figs. 4 and 5). Construction of pressure regulator and vaporizer 40 shall not be described as it is widely known.
  • At least one said electric heating element 3 here in form of three glow plugs, which are supplied with power through thermistors 31 mounted on the body 21 with screws 32. Temperature sensor 33 is mounted between glow plugs 3.
  • Number of electric heating elements 3 depends on the size of gas fuelling installation, i.e. the size (capacity) of pressure regulator and vaporizer, thermal efficiency of heating element, vehicle battery capacity and the power of its electrical installation and from atmospheric conditions, in which the vehicle is used..
  • grease nipple S is located for supplying thermal grease A into the body 21, after it is mounted on the cover 41 of pressure regulator and vaporizer 40, which was shown in Figs. 5 and 6. Thermal grease A is introduced through grease nipple S only once during the whole period of operation.
  • thermal grease A it is advantageous to use said thermal grease A to lubricate the surface of the body 21, in contact with the surface of the cover 41 or the cover 41. In this way all the irregularities of the surfaces of the body 21 and the cover 41 of the pressure regulator and vaporizer are eliminated.
  • Body 21 is equipped with said thermal shield B made of the material resistant to high temperatures.
  • Thermal shield B may be for example manufactured by spraying or dipping in liquid . plastic or in form of overlaying or bonded insert . Thermal shield B may be mounted on the whole body or only on its front surface or in selected spots, as shown in Figs. 4 and 5. Thermal shield B enables quick heating up of the body 21 and in result quicker heat conduction to the pressure regulator and vaporizer 40 and longer heat accumulation,. especially advantageous during wintertime.
  • the body 21 is shaped differently than the body 10, shown in Fig. 3, in scope of the contact surface for the contact with the cover 41 of the pressure regulator and vaporizer, because it is shaped with radial reinforcement fins 41.1.
  • the borehole leads to the contact surface 23, in which radial recesses 24 are formed, into which the radial reinforcement fins 51.1 are housed.
  • Such radial recesses 33 after the heater is mounted, form channels 25, which are connected with each connection channel 26, leading to each chamber 27, in which the glow plug 3 is placed.
  • the heater 1, 10, 20 of the invention plays the role of heat source, which in certain conditions of the internal combustion engine operation, transfers its heat to the gas fuel flowing through the pressure regulator and vaporizer.
  • Figs. 1 to 6 refers mainly to the supporting-start-up heater 1, 10, 20 itself, there is no impediment, so as it constitutes a single montage kit together with pressure regulator and vaporizer, as shown in Fig. 7.
  • clamp 34 is mounted with bolts 35 on the heater and especially on its body 2, 11, 21. Therefore it is possible to use such montage kit as an additional part of the state of art gas fuelling installations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Spray-Type Burners (AREA)

Abstract

L'invention concerne un réchauffeur (1, 10, 20) réalisé sous forme d'un corps (2, 11, 21) qui a une forme quelconque et est fait en une matière ayant de bonnes propriétés de conductivité thermique, avantageusement de l'aluminium ou du cuivre, ayant en particulier une forme adaptée à au moins une forme de la surface d'un régulateur de pression et vaporiseur (6, 40), le corps (2, 11, 21) étant équipé d'au moins un élément de chauffage électrique (3) et d'une sonde de température (33) et au moins une surface externe avant du corps (2, 11, 21), ou une partie de celle-ci, étant recouverte d'un bouclier thermique (B), qui est fait d'une matière résistante à la chaleur. Le corps comprend une chambre (22), dont le trou d'alésage conduit à la surface de contact (12, 23), un embout de graissage (S) est monté dans ladite chambre afin d'alimenter en pâte thermo-conductible (A) ayant un coefficient de conductibilité thermique supérieur à 2,8 W/rn-K la surface de contact (12, 23), qui est raccordée à chaque élément de chauffage électrique (3).
PCT/PL2013/000137 2012-10-31 2013-10-30 Réchauffeur d'appoint de démarrage pour le régulateur de pression et vaporiseur dans les installations automobiles d'alimentation en gaz et procédé de réchauffage d'appoint de démarrage dans les installations automobiles d'alimentation en gaz WO2014070027A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
PLP.401444 2012-10-31
PL401444A PL222912B1 (pl) 2012-10-31 2012-10-31 Sposób dodatkowego podgrzewania wspomagająco-rozruchowego w instalacji gazowej, w szczególności na gaz propan-butan (LPG), do benzynowych silników spalinowych oraz podgrzewacz wspomagająco-rozruchowy do reduktora-parownika instalacji
PLP.405771 2013-10-25
PL40577113A PL405771A1 (pl) 2013-10-25 2013-10-25 Podgrzewacz wspomagająco-rozruchowy do samochodowych instalacji gazowych LPG

Publications (1)

Publication Number Publication Date
WO2014070027A1 true WO2014070027A1 (fr) 2014-05-08

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Application Number Title Priority Date Filing Date
PCT/PL2013/000137 WO2014070027A1 (fr) 2012-10-31 2013-10-30 Réchauffeur d'appoint de démarrage pour le régulateur de pression et vaporiseur dans les installations automobiles d'alimentation en gaz et procédé de réchauffage d'appoint de démarrage dans les installations automobiles d'alimentation en gaz

Country Status (1)

Country Link
WO (1) WO2014070027A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023280393A1 (fr) * 2021-07-07 2023-01-12 Renault S.A.S Systeme de rechauffage d'un circuit de carburant gazeux pour demarrage

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0350795A2 (fr) * 1988-07-09 1990-01-17 Yamaha Hatsudoki Kabushiki Kaisha Moteur à gaz et système d'alimentation en carburant
JPH08303304A (ja) * 1995-05-01 1996-11-19 Aisan Ind Co Ltd Ｌｐｇ燃料加熱装置
FR2759419A1 (fr) * 1997-02-10 1998-08-14 Gennaro Antoine Di Vaporisateur de gaz liquefie a corps de chauffe electrique
US20030192513A1 (en) * 2002-04-16 2003-10-16 Nist Lance E. Remote metering for gaseous fuels and oxidizers
EP1455077A2 (fr) 2003-03-07 2004-09-08 Still Gmbh Procédé d'exploitation d'un système d'alimentation de carburant pour un moteur LPG
US20110100483A1 (en) * 2008-04-01 2011-05-05 Fujikin Incorporated Gas supply apparatus equipped with vaporizer
EP2385437A1 (fr) * 2009-02-02 2011-11-09 Keihin Corporation Soupape de décharge

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0350795A2 (fr) * 1988-07-09 1990-01-17 Yamaha Hatsudoki Kabushiki Kaisha Moteur à gaz et système d'alimentation en carburant
JPH08303304A (ja) * 1995-05-01 1996-11-19 Aisan Ind Co Ltd Ｌｐｇ燃料加熱装置
FR2759419A1 (fr) * 1997-02-10 1998-08-14 Gennaro Antoine Di Vaporisateur de gaz liquefie a corps de chauffe electrique
US20030192513A1 (en) * 2002-04-16 2003-10-16 Nist Lance E. Remote metering for gaseous fuels and oxidizers
EP1455077A2 (fr) 2003-03-07 2004-09-08 Still Gmbh Procédé d'exploitation d'un système d'alimentation de carburant pour un moteur LPG
US20110100483A1 (en) * 2008-04-01 2011-05-05 Fujikin Incorporated Gas supply apparatus equipped with vaporizer
EP2385437A1 (fr) * 2009-02-02 2011-11-09 Keihin Corporation Soupape de décharge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023280393A1 (fr) * 2021-07-07 2023-01-12 Renault S.A.S Systeme de rechauffage d'un circuit de carburant gazeux pour demarrage

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