WO2018114118A1 - Kraftstoffheizer und herstellungsverfahren dafür - Google Patents
Kraftstoffheizer und herstellungsverfahren dafür Download PDFInfo
- Publication number
- WO2018114118A1 WO2018114118A1 PCT/EP2017/078572 EP2017078572W WO2018114118A1 WO 2018114118 A1 WO2018114118 A1 WO 2018114118A1 EP 2017078572 W EP2017078572 W EP 2017078572W WO 2018114118 A1 WO2018114118 A1 WO 2018114118A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rail
- radiator
- assembly
- sealing element
- fuel
- Prior art date
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
- F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
- F02M53/02—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means with fuel-heating means, e.g. for vaporising
-
- 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
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/12—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating electrically
- F02M31/125—Fuel
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
-
- 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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
- F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
-
- 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
- F02M2200/60—Fuel-injection apparatus having means for facilitating the starting of engines, e.g. with valves or fuel passages for keeping residual pressure in common rails
-
- 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
- Y02T10/12—Improving ICE efficiencies
Definitions
- the present invention relates to a fuel heater with a radiator and a receiving member provided therefor, and more particularly to a
- a fuel heater for a fuel rail of an internal combustion engine for conducting alcohol or an alcohol mixture as fuel to the internal combustion engine.
- Another essential disadvantage of the additional tank solution is that for this solution in a motor vehicle two tanks, that is to say the main tank filled with alcohol and the additional tank filled with gasoline, have to be provided which require more space than just a single tank in the vehicle. making the vehicle overall in terms of manufacturing and
- FIG. 1 An example of a Flexstart system is known, for example, from WO 2012/071637 A1, in which the rail is made entirely of plastic and in which a fuel heater is inserted into a secondary pipe connected to the main pipe.
- a plastic main rail 104 is shown with a fuel inlet 106 and a fuel outlet 108, wherein the fuel to be heated flows from the main rail 104 through the fuel inlet 106 into a chamber 1 10, in which the fuel through a
- Fuel heater 1 12 is heated and then rises up to the fuel outlet 108.
- the warm fuel accumulates in front of the fuel outlet 108, behind which an injection valve (not shown) is arranged, which injects the warm fuel into a suction pipe (not shown), which is then directed into a combustion chamber (not shown) of the internal combustion engine.
- the fuel heater 1 12 has a radiator 1 14, as he in principle of known metallic
- Glow plug is known, for example from DE 20 2005 016 047 U1.
- the radiator 1 14 has substantially a closed, tubular
- the fuel heater 1 12 further includes a receiving member 122 for receiving the radiator 1 14, which is pressed into the chamber 1 10 and has a two-part construction.
- the two-part structure of the receiving member 122 here consists of a steel plate 124, in which the glow tube 1 16 is pressed, and a rear housing part 126, the steel plate 124 with the pressed therein radiator 1 14 and the
- the contact lugs 120 are exposed. On the steel plate 124 and the terminal pin 1 18, the contact lugs 120 are welded.
- the rear housing part 126 is made of plastic and is sprayed around the steel disk 124 and the connection technique consisting of connecting pin 1 18 and contact lugs 120.
- An O-ring 128 seals the steel disk 124 against the chamber 1 10. The seal of the chamber 1 10 to the outside depends on the pressure between the steel disk 124 and the radiator 1 14 off.
- a mechanical attachment of the fuel heater 1 12 in the chamber 1 10 by means of a (not shown) clip.
- the two contact lugs 120 form in the rear region of the fuel heater 1 12 a two-pole connection, which is required for the plastic Flexstart system, since a negative connection can not be made via the engine mass.
- the Flexstart system can also be used in conjunction with a
- Gasoline direct injection can be used.
- the assembly according to the invention comprises a rail, a fuel heater and a sealing element, wherein the fuel heater has a radiator and wherein the sealing element between the radiator and the rail in a
- Recess of the rail is arranged and abuts the rail and the radiator to seal between the radiator and the rail.
- the Dciesproblem between the rail and the radiator for example, due to different materials of the rail and the radiator and the resulting different thermal expansion of these components is achieved by the sealing element.
- the heating body has a glow tube and a heating coil, and the sealing element is on the glow tube
- Embodiment the sealing element against axial slipping in Direction of the heating coil of the radiator secured by a contact shoulder of the Rails.
- the fuel heater has a flange component which forms a composite with the radiator.
- Flange component can be encapsulated around the radiator.
- the flange member limits the recess in which the sealing element is arranged.
- the recess in which the sealing element is arranged is thus preferably delimited by the rail, the heating element and the flange component.
- Sealing element is more preferably also on the flange component.
- the radiator has, for example, a substantially one-sided
- Heating coil electrically connected to a connecting bolt, at the end of which the electrical connection is in the form of contact lugs.
- the contact lugs can be partially encapsulated by the flange.
- a ceramic insulating powder which is usually magnesium oxide, is used in the glow tube between the turns of the helically shaped heating coil as electrical insulation from the glow tube, wherein the insulating powder is sealed by a radiator seal in the glow tube.
- the glow tube, heating coil, insulating powder, connecting bolt and radiator seal thus form the radiator.
- the fuel heater is formed by the heater and the flange member.
- the radiator is cooled by the fuel itself, so that no temperatures occur that damage the material of the sealing element.
- the sealing element is arranged on the glow tube spaced from the heating coil. This means that the sealing element should be arranged on the outside of the glow tube of the fuel heater so that the region of the glow tube, which is heated by the heating coil, should be as far away from the sealing element.
- the sealing element is arranged on the glow tube in the region of the heating body on which only the connecting bolt is located in the glow tube, which further preferably corresponds to a region in the upper half of the glow tube, more preferably in the upper third of the glow tube , ie near the open end of the glow tube and away to the closed end of the glow tube.
- a portion of the radiator is directly surrounded by the rail, wherein one or more remaining portions of the radiator are exposed, so at least not directly surrounded by the rail.
- the radiator is inserted into the rail, so that the upper portion of the radiator of the fuel heater, that is, the closed end of the glow tube of the radiator in which the heating coil is arranged, exposed to a heating function in the chamber to exercise.
- the radiator is also inserted into the rail, so that a lower portion of the radiator, which is correspondingly formed by the open end of the glow tube, preferably also together with the connecting bolt and the contact lugs, is not directly surrounded by the rail.
- Fuel heater firmly connected to each other which can be cohesive, positive or non-positive.
- the two components are glued together or secured by a clamp.
- the rail and the fuel heater in particular its
- Flange member each having circumferential grooves or at least partially circumferential grooves to allow the attachment of a clamp. Furthermore, welded joints, adhesive joints or
- the sealing element is preferably formed by an O-ring.
- the material is up to 200 ° C, more preferably up to 300 ° C resistant.
- the sealing element may for example be made of an elastomeric plastic.
- the method according to the invention comprises in particular the provision of a rail with a recess for receiving a sealing element, providing a fuel heater with a radiator, arranging a rail
- Fuel heater in the rail wherein the sealing member is disposed in the recess provided and the firm connection of the rail with the fuel heater for the production of the assembly.
- an assembly which preferably has only a single sealing element, which is arranged directly between the radiator and the rail, where due to the different materials, the strongest leakage is expected.
- the manufacturing process eliminates the need for steps such as pressing a thermoformed housing and possibly laser welding. Furthermore, the steel disc is omitted (reference number 124 in FIG. 2), which results in a reduction of the costs.
- Fig. 1 shows a preferred embodiment of an assembly according to the
- FIG. 1 a preferred embodiment of an assembly 2 of a flexstart
- the assembly 2 comprises a rail 4 with a fuel inlet 6 and a fuel outlet 8, wherein the fuel to be heated by the
- Fuel inlet 6 flows into a chamber 10 in which the fuel through a
- Fuel heater 12 is heated and then rises up to the fuel outlet 8. The warm fuel collects accordingly before the
- Fuel outlet 8 behind which a (not shown) injection valve is arranged, which injects the warm fuel into a (not shown) suction pipe, which is then passed into a (not shown) combustion chamber of the internal combustion engine.
- the fuel heater 12 has a radiator 14, as it is known in principle from known metallic glow plugs, for example from DE 20 2005 016 047 Ul.
- the radiator 14 has substantially a closed tubular metallic glow tube 16, in which a spiral
- Heating coil 18 installed and materially connected to the glow tube 16, for example, is welded. At the other end, the heating coil 18 is electrically conductively connected to a connecting bolt 20, at the end of which the electrical connection is in the form of contact lugs 22. There are two tabs 22 are provided, wherein a contact lug 22, the electrical
- the rail 4 has a passage opening 28 for receiving the radiator 14, so that the inserted radiator 14 or the glow tube 16 protrudes into the chamber 10.
- the passage opening 28 is located in a flange region 26.
- the fuel heater 12 also includes a flange member 34, which in the
- Flange portion 26 is attached to the rail 4.
- the flange member 34 and the rail 4 each have circumferential grooves 36, 38, notches or bores to provide an engagement portion for a mounting bracket or a clamp (not shown), so that they can be mechanically fastened together.
- the flange member 34 may be welded, glued, latched or bolted to the rail 4 in the flange portion 26.
- the assembly 2 also includes a sealing member 32. Das
- Seal member 32 is disposed in the form of an O-ring for sealing between the heater 14 and the rail 4.
- the sealing element 32 is arranged in an annular recess 30, which widens the passage opening 28 at the front end of the rail 4.
- the sealing member 32 abuts the rail 4 and the radiator 14 to close the leakage path.
- the sealing element 32 is also located on the
- the sealing element 32 is located in a region in the vicinity of the open end of the radiator 14, ie in a region in which the connecting bolt 20 is arranged. As a result, the sealing element 32 is arranged away from the heating coil 18 in order to avoid a negative influence of heat on the sealing element 32.
- the sealing element 32 is against axial slippage in the direction of
- the ganschulter 40 tapers the recess 30 to the size of
- the sealing element 32 By the sealing element 32, the desired tightness between the radiator 14 and the rail 4 is achieved in order to prevent leakage of fuel through a gap between the radiator 14 and rail 4 due to different thermal expansions.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112019012840A BR112019012840A2 (pt) | 2016-12-23 | 2017-11-08 | aquecedor de combustível e processo para produção do mesmo |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016226130.4 | 2016-12-23 | ||
DE102016226130.4A DE102016226130A1 (de) | 2016-12-23 | 2016-12-23 | Kraftstoffheizer und Herstellungsverfahren dafür |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018114118A1 true WO2018114118A1 (de) | 2018-06-28 |
Family
ID=60268391
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2017/078572 WO2018114118A1 (de) | 2016-12-23 | 2017-11-08 | Kraftstoffheizer und herstellungsverfahren dafür |
Country Status (3)
Country | Link |
---|---|
BR (1) | BR112019012840A2 (de) |
DE (1) | DE102016226130A1 (de) |
WO (1) | WO2018114118A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114458474A (zh) * | 2022-03-09 | 2022-05-10 | 成都飞擎航空科技有限公司 | 一种复合燃油加热器 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202005016047U1 (de) | 2005-10-13 | 2006-01-26 | Buss, Willi | Gerät zum Vorwärmen von Bio-Kraftstoffen für Dieselmotore |
JP2011064090A (ja) * | 2009-09-15 | 2011-03-31 | Honda Motor Co Ltd | 燃料加熱装置 |
WO2011055295A1 (en) * | 2009-11-06 | 2011-05-12 | Eltek S.P.A. | Electric heater, heating device and heating system |
WO2012071637A1 (en) | 2010-12-02 | 2012-06-07 | Robert Bosch Limitada | Fuel rail made of a plastic material with a heating system |
EP2538067A1 (de) * | 2011-06-20 | 2012-12-26 | Delphi Technologies Holding S.à.r.l. | Anordnung für ein elektronisch betätigtes Ventil |
DE102015211201A1 (de) * | 2014-11-07 | 2016-05-12 | Robert Bosch Gmbh | Kraftstoffheizer und Herstellungsverfahren dafür |
-
2016
- 2016-12-23 DE DE102016226130.4A patent/DE102016226130A1/de not_active Withdrawn
-
2017
- 2017-11-08 BR BR112019012840A patent/BR112019012840A2/pt not_active Application Discontinuation
- 2017-11-08 WO PCT/EP2017/078572 patent/WO2018114118A1/de active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202005016047U1 (de) | 2005-10-13 | 2006-01-26 | Buss, Willi | Gerät zum Vorwärmen von Bio-Kraftstoffen für Dieselmotore |
JP2011064090A (ja) * | 2009-09-15 | 2011-03-31 | Honda Motor Co Ltd | 燃料加熱装置 |
WO2011055295A1 (en) * | 2009-11-06 | 2011-05-12 | Eltek S.P.A. | Electric heater, heating device and heating system |
WO2012071637A1 (en) | 2010-12-02 | 2012-06-07 | Robert Bosch Limitada | Fuel rail made of a plastic material with a heating system |
EP2538067A1 (de) * | 2011-06-20 | 2012-12-26 | Delphi Technologies Holding S.à.r.l. | Anordnung für ein elektronisch betätigtes Ventil |
DE102015211201A1 (de) * | 2014-11-07 | 2016-05-12 | Robert Bosch Gmbh | Kraftstoffheizer und Herstellungsverfahren dafür |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114458474A (zh) * | 2022-03-09 | 2022-05-10 | 成都飞擎航空科技有限公司 | 一种复合燃油加热器 |
CN114458474B (zh) * | 2022-03-09 | 2024-02-20 | 成都飞擎航空科技有限公司 | 一种复合燃油加热器 |
Also Published As
Publication number | Publication date |
---|---|
BR112019012840A2 (pt) | 2019-12-17 |
DE102016226130A1 (de) | 2018-06-28 |
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