CN100413721C - Fuel system for an internal combustion engine - Google Patents
Fuel system for an internal combustion engine Download PDFInfo
- Publication number
- CN100413721C CN100413721C CNB2004800322283A CN200480032228A CN100413721C CN 100413721 C CN100413721 C CN 100413721C CN B2004800322283 A CNB2004800322283 A CN B2004800322283A CN 200480032228 A CN200480032228 A CN 200480032228A CN 100413721 C CN100413721 C CN 100413721C
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- Prior art keywords
- fuel
- additive
- chamber
- holder
- reservoir
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/04—Tank inlets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03328—Arrangements or special measures related to fuel tanks or fuel handling
- B60K2015/03348—Arrangements or special measures related to fuel tanks or fuel handling for supplying additives to fuel
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Exhaust Gas After Treatment (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
Fuel system for an internal combustion engine operating with a liquid fuel and comprising a fuel reservoir intended for the said fuel as well as an additive reservoir (4), comprising a chamber that is formed in a concave recess (2) of the wall of the fuel reservoir. Method for manufacturing such a fuel system.
Description
Technical field
The present invention relates to use the supply of the combustion engine of liquid fuel.
The invention particularly relates to fuel system at this driving engine, this fuel system can be used in the driving engine that is provided with volatile liquid fuel, and the driving engine that is used to be provided with being called as sometimes such as those heavy liquid fuel of (according to countries and regions) diesel oil or on-road vehicle usefulness diesel oil.The invention still further relates to the method for producing this system.
Background technology
The requirement of strengthen environmental protection make the country in many areas in the world and international right authority in a lot of fields particularly the power actuated vehicle transport field strengthened regulatory limits to the pollutant emission aspect.Therefore, the power actuated vehicle manufacturer has begun to be intended to reduce the research of granular material discharged (especially at diesel engine) and some dusty gas (NOx, CO etc.) discharging.These research projects have caused adding specific additive (as some slaines, urea, ammonia and carbamate etc.) to a great extent in fuel, driving engine and discharge gas or the like.
For the vehicle by diesel engine drives, the power actuated vehicle manufacturer provides the terms of settlement for the particulate emission problem by for these vehicles assembling particulate filters, and this filter is arranged at and discharges in the exhaust system of burning gases in the atmosphere.In order to recover the filter efficiency of these particulate filters, be necessary to burn the particulate matter of part blocking filter with regular time intervals.In order to be used in the loop cycle automation that recovers regenerate particulate filters, be necessary to find a kind of method, this method is by the suitable interim adjusting of the combustion parameter of driving engine own, reduce the combustion temperature of these particulate matters, make it with discharge gas in the highest temperature that can reach consistent.Have realized that it is necessary using the chemical combustion additive of some, thereby the combustion temperature of particulate matter in the emission gases can be reduced to and combustion phase consistent temperature level in-engine and that particulate matter is eliminated fully.Designed the liquid additive holder, be used to be installed to above the fuel reservoir of diesel car, the inside or near this fuel reservoir, the volume of this liquid additive holder is less than the volume of fuel reservoir.
Therefore, patent application DE 10112361 discloses a kind of fuel reservoir of saddle form, and the inside comprises the make-up fluid reservoir of settling near pump, and this pump is to be used for the level of fuel of balance holder different piece.Such system is compact, but the shortcoming that has is, production make-up fluid reservoir independently, and then install in the fuel reservoir.In addition, such system is limited to the additive that must be metered into fuel reservoir itself.
Summary of the invention
Therefore, the purpose of this invention is to provide a compactness but the general-duty fuel system, its production for the supply system of the driving engine of using lightweight, the work of fluid carbon hydride is suitable for, suitable equally to production with the supply system of the engine operation of heavy carbon hydride, and this fuel system can not only be metered into additive fuel reservoir itself, and it can be metered into any other part of fuel system, driving engine or discharge system etc.
Thereby, the present invention relates to fuel system with the combustion engine of liquid fuel work, this combustion engine comprises the fuel reservoir that uses for described fuel, and the make-up fluid reservoir that includes the chamber that is formed at fuel storage wall recess.
In this statement, fuel system is the assembly that a plurality of chambers are formed, and these chambers are in pack into power actuated vehicle or the rigidly-fixed power plant, and has storage, purifications, measures or transmit the radical function of the fuel that is used to supply Thermal Motor.Motor carriering tool can be power actuated vehicle (for example: automobile, truck, motor bike, river steamer, ocean liner or aircraft) or the vehicle that specially orbit (for example: railway locomotive).Rigidly-fixed power plant can comprise, for example, and the motor of generating set or lathe driving engine.
Fuel is understood that to refer to be fit to the hydrocarbons of supply combustion engine.
Phrase " liquid carbon hydride " refers to the hydrocarbons that exists with liquid state in the fuel reservoir in fuel system under the driving engine average service conditions.
Phrase " volatile liquid hydrocarbons " refers to when 293K (20 ℃) saturated vapour pressure greater than the liquid carbon hydride (according to above-mentioned definition) of 1bar.The volatile liquid hydrocarbons that is generally used for the Thermal Motor of dispenser device motor vehicle be those commercial run after fame to weigh up with " gasoline " sell, and be the employed volatile liquid hydrocarbons of Thermal Motor for so-called " blast " applied ignition.
Phrase " heavy liquid hydrocarbons " refers to the liquid carbon hydride that when 293K (20 ℃) saturated vapour pressure is lower than 1bar.The heavy liquid hydrocarbons that is generally used for the Thermal Motor of dispenser device motor vehicle be those commercial run after fame to weigh up with " diesel oil " sell, and be provided with the employed heavy liquid hydrocarbons of compression-ignited Thermal Motor of Diesel cycle operation.
According to the present invention, this make-up fluid reservoir and fuel reservoir are made into an integral body.In the paragraph below, this assembly is represented with general tems " holder ".This holder can be made by any material that is complementary with its each liquid carbon hydride that may hold.Simultaneously, this kind material must be under normal working pressure and temperature be chemically inert for volatile liquid hydrocarbons and heavy liquid hydrocarbons.It can be made by plastics or metal.In content of the present invention, plastics can provide good result.
This holder can be by any suitable method manufacturing.In a preferred embodiment of the invention, this holder is manufactured by molded operation.In this preferred embodiment of the present invention, the material of holder must be selected from the material of those permissions by molded manufacturing.For this reason, thermoplastic material is very suitable.Thermoplastic material refers to any thermoplastic polymer, comprises thermoplastic elastomer and their compound.Term " polymer " " refer to homopolymer and copolymer (particularly binary or ternary).The example of these copolymer non-finite forms has: random copolymers, alternating copolymer, periodic copolymer and graft copolymer.The thermoplastic polymer or the copolymer of any kind of fusing point below dissociation temperature all are fit to.The fusion range continuity synthetic thermoplastic material above at least 10 degrees centigrade be particularly suitable for.As giving an example of this material, existed those to have the material of the polydispersity of mol wt.Particularly can use polyolefin, ethene polyhalide, thermoplastic polyester, polyketone, polyamide and copolymer thereof.Can also use the compound of poly-mer or copolymer, and the compound of polymeric material and inorganic, organic and/or natural stuffing (such as but not limited to carbon, inorganic salts or other growths, natural fiber, glass fibre and polymer fiber).Also may use the multiple-structures of being made up of a plurality of superimposed complete layers, this conformable layer comprises at least a in poly-mer described above or the copolymer.Common optimal ethylene polyhalide and polyolefin.Often the poly-mer that uses is a polyethylene.Use highdensity polyethylene (HDPE) own through obtaining excellent effect.
Holder according to system of the present invention is connected with feed pipe usually, is used for liquid fuel is introduced into fuel reservoir.This pipe can independently be made and then by any suitable mode, for example by welding or bonding, is connected on the holder.According to the present invention,, feed pipe and holder are molded as an integral body as preferably.
According to the present invention, this holder includes recess at Qi Bizhong, and this recess is recessed at it on the face in the outside of holder.The shape of this recess is inessential for defining the present invention.It can have shape or polyhedral shape of shape (for example shape of the part of spheroid or egg), circular cone or the truncated cone of curved surface equally well.Preferably give the shape of its regular or irregular curved surface.
According to the present invention, form the chamber at the recess that constitutes this make-up fluid reservoir main portion.This chamber has been advantageously provided metering system, and this metering system preferably includes the eductor that is connected to jet dredge pump, and appears at preparation input additive-treated oil place (holder, driving engine, discharge orifice or the like).Eductor and jet dredge pump can all be positioned over the inside or the outside of recess.Metering system preferably includes as with the jet dredge pump described in the FR 0320880.8 of the applicant's name application.
When preparing to be added to additive in the fuel, the chamber of make-up fluid reservoir communicates with fuel reservoir by the opening that passes it.Like this, this chamber preferably includes and will be metered into the system of holder from the aforementioned opening of additive process of chamber, and described metering system advantageously comprises pump and passes through the eductor of aforementioned opening.
Have the situation that dispense additive enters the function of fuel reservoir for metering system, it is to distribute with the amount of the mathematical function of the instantaneous consumption of (for example) engine fuel (not necessarily but normally proportion function).This quantity is calculated by single board computer (SBC) or special calculator usually.As an alternative, metering can once be carried out according to the quantity of the fuel of introducing in fill process behind charged just.In this case, single board computer (SBC) or calculator advantageously are connected to the device of the opening and closing that are used to monitor the fuel-feed system.This device can comprise the electromagnet that is connected to movable part (be stop motion mechanism strictly speaking, or any other manual or automatic shutdown system in ground) and changes polarity between the opening and closing position.The difference of this polarization state is monitored by the single board computer (SBC) of when being apprised of memory capacity it being noted.To become the volume of fuel of introducing between the stable moment once more in the moment that system is activated and system poor if the position of stop motion mechanism when closing corresponding to the dead position of single board computer (SBC), just can calculate.This volume can be used as calculating for the basis that keeps the necessary metering of constant additive concentration (carrying out) after closing stop motion mechanism.
More generally, aforesaid chamber is that this additive will directly be added in the fuel as previously mentioned for the holder as any additives, preferred pulpous state or liquid additive, but also be directed in driving engine or the discharge gas etc.Under the situation that system according to the present invention uses for diesel motor, additive advantageously comprises the composite of the catalyst that is used for carbonaceous solids (being produced by the uncomplete combustion of the heavy carbon hydride in the CI engine) low-temperature burning that is dissolved in the hydrocarbons solvent.The example of the liquid additive of suitable this variant has iron and the cerium salt in the hydrocarbons solution.
The chamber of make-up fluid reservoir is advantageously sealed by the lid of Any shape.Normally, this lid is made of the dish that preparation is fixed to the recess periphery.The material of making lid is unimportant for defining the present invention.In fact, lid should be made by can withstand the chemical stress that internal combustion engine fuel system born usually and the material of mechanical strees in normal use.For example, it can be made by metal or synthetic resin.Under the situation of synthetic resin, advantageously the synthetic resin with fuel reservoir is identical for it.In a kind of variant, the device (for example jet dredge pump) that is used for dosing agent is fixed on lid, and is connected with at least one electric conductor that passes lid with leak-proof manner.The purpose of this conductor is to be this device power supply.If a multichannel conductor can also be connected to gauging device on engine management calculator or any other function unit alternatively.This lid must seal the chamber.This can realize by any suitable mode, and can be detachable type or non-dismountable type.Can be used in according to the connection mode in the system of the present invention and comprise welding, bonding and crimping.As variation, this lid is circular lid, and it is screwed on the threaded annular region of this recess circumference.
Also preferably include the feed arrangement that is used for additive is introduced the chamber according to system of the present invention.This feed arrangement can comprise feed pipe, itself or can communicate with the feed pipe of fuel reservoir or appear in the feed pipe of fuel reservoir, perhaps can be independent of the feed pipe of fuel reservoir.According to an advantageous embodiment of the invention, the feed pipe of this fuel reservoir and the feed pipe of make-up fluid reservoir communicate, and the feed pipe of make-up fluid reservoir is in the fuel reservoir feed pipe.
According to system of the present invention, except being used for the guiding fuel injection device, also advantageously comprise the pipe that is used to discharge make-up fluid reservoir gas with the outlet that distributes fuel, this pipe still preferably ends in the feed pipe of main fuel holder.The stop motion mechanism that is usually used in charging and freeing pipe end advantageously makes these pipes, is closing in the mode of more or less leakproof, except being in just during charging in this make-up fluid reservoir.
In this favourable form according to additive system of the present invention, be used for can being provided at an upper portion thereof when filling it up with the end of additive-treated oil process by feed pipe to the pipe of make-up fluid reservoir exhaust, be the device of operator's vision ground indication overflow situation.These devices can place the float of freeing pipe to form by (for example), and holder is filled additive and will overflow by this pipe the time, float just rises to the upper outlet of this pipe immediately.
At last, the freeing pipe of this variant preferably is provided with overvoltage and negative pressure safety system according to the present invention.The purpose of this system be particularly in order to remove the gas (overvoltage safety) that is present in the make-up fluid reservoir in fill process, and utilizes air to replace the additive-treated oil volume (negative pressure safety) that consumes gradually in the process of vehicle operating.Advantageously, this system only comprise exceed setting pressure threshold value (more than 120mbar) just the valve of opening, this is in order to prevent additive-treated oil and to leak and the entering of N/R liquid, dust etc.
The invention still further relates to the method for making foregoing fuel system, wherein:
-make the holder that is used for described fuel, the wall of holder has the recess that falls on its outside;
-manufacturing lid;
-with described sealing of lid be attached to the periphery of aforementioned recess, thereby form the chamber;
-before or after additional this lid, additive is incorporated into indoor; And
-before additive is introduced in the chamber or after, the chamber is connected to the system that is used for dosing agent.
In the method, the term of use has identical meaning with the applied term of top description fuel system.Preferably, holder and lid are made by foregoing plastics, in particularly preferred mode, are made by thermoplastic material, and this makes them to make by molded.Can adopt suitable molded of any kind.For the manufacturing of holder, the extrusion molded and inflation injection-molded of special recommendation inflation, and especially inflation is extrusion molded.For lid, injection-molded preferably.
Description of drawings
By following description to accompanying drawing, it is more obvious that special performance of the present invention and details will become.
Fig. 1 (showing not in scale) shows the fuel system of the combustion engine that uses heavy carbon hydride (as diesel oil) with section drawing.
The specific embodiment
Fuel system shown in Fig. 1 is especially used for the vehicle of equipping compression-ignited (being sometimes referred to as " diesel engine ") combustion engine.This fuel system comprises the fuel reservoir of being made by polyethylene, and the wall 1 of fuel reservoir has the recess 2 that is covered by dish 3, and this dish delimited the boundary line of chamber 4.Chamber 4 is as the holder of the liquid additive of heavy carbon hydride.Described additive comprises the catalyst that promotes carbonaceous particle or dust burning, and this particle or dust are that heavy carbon hydride produces in the engine room combustion process.This chamber 4 is connected to this holder by metering system, and this metering system comprises attached on the dish 3 and immerse the electrojet pump 5 of (not shown) in the liquid additive.Pipe 6 passes dish 3, and pump 5 is connected to eductor 7, and this eductor 7 pierces into the wall of holder 1 by the opening (not shown).By electric conductor 8 is pump 5 supply of current, and electric conductor 8 passes dish 3 with leak-proof manner.Pipe 9 conducts that appear at the opening (not shown) place of dish 3 are adorned the additive-treated oil pipes to chamber 4.Second pipe 10 is to be the pipe of make-up fluid reservoir exhaust when the make-up fluid reservoir charging.When internal combustion engine, these two pipes are all closed usually.
The above is the preferred embodiments of the present invention only, is not limited to the present invention.In the above-described embodiments, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. fuel system that is used to use the combustion engine of liquid fuel work, and it comprises fuel reservoir and the make-up fluid reservoir of using for described fuel, it is characterized in that, described fuel reservoir and described make-up fluid reservoir are made into an integral body, and described make-up fluid reservoir comprises the chamber of the recess that is formed at described fuel storage wall.
2. fuel system according to claim 1 is characterized in that, described additive is in order to be added in the described fuel, and described chamber communicates with described fuel reservoir by the opening that passes described chamber.
3. fuel system according to claim 2 is characterized in that, described chamber comprises and be used for and will be metered into the system of described holder by aforementioned opening from the described additive of described chamber that described metering system comprises pump and passes the eductor of aforementioned opening.
4. according to claim 2 or 3 described fuel system, it is characterized in that, described additive just is added in the described fuel after the firm charging of described fuel reservoir, its quantity is calculated by single board computer (SBC) on the device that is connected to the opening and closing that can monitor described fuel reservoir or calculator, and described single board computer (SBC)/calculator can calculate the volume of the fuel of introducing in fill process, and measures described additive-treated oil volume subsequently.
5. fuel system according to claim 2 is characterized in that:
-described fuel is that diesel oil and described driving engine are CI engine; And
-described additive comprise be dissolved in the hydrocarbons solvent, be used to promote because of
Described in-engine diesel oil uncomplete combustion and the catalytic component of the carbonaceous solids low-temperature burning that produces.
6. fuel system according to claim 1 is characterized in that, described chamber is sealed by the lid made from described fuel storage modulator material identical materials.
7. fuel system according to claim 1 is characterized in that, comprises the pipe to described make-up fluid reservoir charging, and described pipe comes across in the pipe to described fuel reservoir charging.
8. fuel system according to claim 1 is characterized in that, is included as the pipe of described make-up fluid reservoir exhaust, and described pipe comes across in the pipe to described fuel reservoir charging.
9. method of making fuel system according to claim 1, wherein:
-make the holder be used for described fuel, described holder be used for the additive-treated oil holder and make an integral body, the wall of described holder has the recess that is recessed in its outside;
-manufacturing lid;
-with described sealing of lid be attached to the periphery of aforementioned recess so that form the chamber;
-before or after additional described lid, additive is incorporated into described indoor; And
-before or after described additive is introduced described chamber, described chamber is connected in the described additive-treated oil of the metering system.
10. method according to claim 9 is characterized in that described holder and lid are made by thermoplastic material, and described holder makes by the inflation extrusion way, and described lid is by the injection manufacturing.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0313073A FR2862027A1 (en) | 2003-11-07 | 2003-11-07 | Additive tank for fuel system comprises enclosed space of plastic material connected to fuel filler neck of main fuel tank |
| FR03.13073 | 2003-11-07 | ||
| FR03/13073 | 2003-11-07 | ||
| FR04/00856 | 2004-01-29 | ||
| FR04.00856 | 2004-01-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1874908A CN1874908A (en) | 2006-12-06 |
| CN100413721C true CN100413721C (en) | 2008-08-27 |
Family
ID=34508320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800322283A Active CN100413721C (en) | 2003-11-07 | 2004-10-28 | Fuel system for an internal combustion engine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100413721C (en) |
| FR (1) | FR2862027A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0320880D0 (en) | 2003-09-05 | 2003-10-08 | Inergy Automotive Systems Res | Smart additive system (SAS) dosing pump |
| NL2002792C2 (en) * | 2009-04-24 | 2010-10-28 | Vialle Alternative Fuel Systems Bv | STOCK COVER AND LPG FUEL STOCK. |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4370998A (en) * | 1980-01-10 | 1983-02-01 | Yamaha Hatsudoki Kabushiki Kaisha | Fuel tank for reserving different kinds of fuels |
| DE10112353A1 (en) * | 2000-03-20 | 2001-09-27 | Volkswagen Ag | Tank for separate accommodation of two different fuels for a fuel cell unit of a motor vehicle comprises compartments which are made of different materials |
| FR2834006A1 (en) * | 2001-12-20 | 2003-06-27 | Marwal Systems | Motor vehicle fuel feed system comprises tank with additive reservoir inside one of its linked receiving chambers with well modules |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR320880A (en) | 1902-05-05 | 1902-12-23 | Faucheux D Humy Paul Raoul De | Advanced Motorcycle System |
| FR2699464B1 (en) * | 1992-12-23 | 1995-01-20 | Journee Paul Sa | Arrangement for filling a motor vehicle fuel tank. |
| US6263924B1 (en) * | 1998-11-23 | 2001-07-24 | Mobil Oil Corporation | Vehicle engine system additive dispenser |
| DE10000396A1 (en) * | 2000-01-07 | 2001-07-12 | Volkswagen Ag | System for adding additive to fuel for internal combustion engine has tank for holding solid additive with filler opening cross-section forming part of fuel tank filler cross-section |
-
2003
- 2003-11-07 FR FR0313073A patent/FR2862027A1/en active Pending
-
2004
- 2004-10-28 CN CNB2004800322283A patent/CN100413721C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4370998A (en) * | 1980-01-10 | 1983-02-01 | Yamaha Hatsudoki Kabushiki Kaisha | Fuel tank for reserving different kinds of fuels |
| DE10112353A1 (en) * | 2000-03-20 | 2001-09-27 | Volkswagen Ag | Tank for separate accommodation of two different fuels for a fuel cell unit of a motor vehicle comprises compartments which are made of different materials |
| FR2834006A1 (en) * | 2001-12-20 | 2003-06-27 | Marwal Systems | Motor vehicle fuel feed system comprises tank with additive reservoir inside one of its linked receiving chambers with well modules |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1874908A (en) | 2006-12-06 |
| FR2862027A1 (en) | 2005-05-13 |
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Address after: Brussels Patentee after: NERGY AUTOMOTIVE SYSTEMS RESEARCH (SOCIeTe ANONYME) Address before: Brussels Patentee before: INERGY AUTOMOTIVE SYSTEMS RESEARCH (Societe Anonyme) |