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
  • F02M27/00—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like
  • F02M27/04—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like by electric means, ionisation, polarisation or magnetism
  • F02M27/045—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like by electric means, ionisation, polarisation or magnetism by permanent magnets
• • 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
• • 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
  • B60K15/077—Fuel tanks with means modifying or controlling distribution or motion of fuel, e.g. to prevent noise, surge, splash or fuel starvation
• • 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
  • B60K2015/03236—Fuel tanks characterised by special filters, the mounting thereof
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
  • F02B3/00—Engines characterised by air compression and subsequent fuel addition
  • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

• the present invention relates to a method and device for treating a fuel, in particular a fuel intended to supply an internal combustion engine.
• the object of the present invention is to propose an improvement to this type of process and to a device suitable for applying this improvement.
• the device is easy to adapt for example to motor vehicles, burners or generator sets, and allows achieve improved performance, mainly in terms of consumption and smoke emissions (opacity) for a diesel engine.
• the invention provides a device for treating a fuel, characterized in that the fuel intended to supply an engine is sucked in from a confined space subjected to a magnetic field, said space, possibly forming a sub-tank, forming part of a main volume forming a reservoir or being in communication with this main reservoir.
• confined and confined space or confinement refer to a volume which is essentially more closed than is that from which the fuel from a conventional tank is sucked up, this volume however having to be open or in direct communication with the larger volume making up the bulk of the tank.
• the effect of confinement in the vicinity of the fuel outlet limits the overall mixing effect of the fuel to this level, mixing effect due to the normal agitation of the tank.
• the ratio of the volume of the confined space to the volume of the main tank is preferably less than 1:10, more preferably less than 1:50.
• the volume of the enclosure is nevertheless more specifically dependent on the consumption of the engine so that the average residence time in the enclosure comprising the magnetic active element will preferably vary from 5 to 20 min. preferably about 10 min.
• the confined space can be an enclosure immersed in the tank or located outside the tank. However, it can also be a particular place in the tank, the confinement being caused for example by a recess of various shape along a wall, generally the bottom of the tank. In a particular case, a simple plate can create a compartment effect capable of producing the effect according to the invention.
• the general shape of the tank can also have a confinement part. A defined volume, totally or partially by a perforated or simply perforated wall located inside the tank, also constitutes a confinement space according to the invention.
• the confined space can also advantageously come from the tank gauge system most often offering in fact partial confinement along a wall, for example in the form of an open cylinder or of a semi-cylindrical plate.
• the gauge system, and the device according to the invention are combined.
• the gauge systems often already include a confinement space according to the invention, for example in the form of a semi-cylindrical plate fixed to the wall and protecting a gauge sensor.
• a device intended to be immersed, at least partially, in a fuel tank and connected on the one hand to the fuel intake pipe to the engine and on the other hand part to the fuel return line of the fuel pump, the device comprising an enclosure provided with a magnetic means in communication with the fuel tank, directly or via a filter.
• This filter will preferably be a non-metallic microperforation filter (analogous to those used for oil filters).
• a magnet device consists of a chamber or a volume in communication or at least partially open to the fuel from the tank and in which the suction line is present and in which optionally, according to one embodiment currently preferred, the return or delivery of fuel leads.
• the fuel intended for the supply line passes through a, and possibly beforehand around a cylindrical enclosure provided with permanent magnets. Given the immediate proximity of the fuel return, it follows that the recycling coefficient of a determined quantity of fuel is much greater than in the absence of an enclosure, the communication to the tank being provided only for compensate for the part of the fuel actually consumed by the engine.
• the fuel return pipe opens near said magnetic device relative to the dimensions of the tank , for example for a conventional tank vehicle at a distance of less than 20 cm, preferably less than 10 cm.
• permanent magnets eg ferrite or neodynium
• electromagnets By adopting an appropriate assembly.
• the exact configuration of the magnets does not however constitute a limitation of the invention.
• One of the advantages of the present invention for a specific application eg in a motor vehicle, is that the benefits of the magnetization of the fuel are felt more quickly when the vehicle is started.
• the residence time in the fields and the relative movements of the magnetic field or fields and of the fuel are greater than in a system of the prior art.
• the efficiency of the system according to the invention observed by measuring CO and opacimetry is therefore greater in urban traffic and in circumstances where there are numerous cold starts.
• the magnetic device can be placed in an auxiliary tank offering a "buffer" volume inserted in the fuel supply circuit and closer to the engine block. Its efficiency will be improved especially at the time of commissioning. This can allow the preparation of the fuel for this auxiliary tank and better management as soon as the engine is started.
• the fuel return system can recycle only part of the fuel, this part being able to vary automatically as a function of parameters (flow rate, temperature, opacity, consumption, torque requested, etc.) gathered individually, by regulation, or collected by a control microcomputer.
• the method and the device according to the invention therefore make it possible to very significantly improve the performance of the engines while reducing pollution.
• a diesel engine causing an opacity less than IK m-1 drops in opacity of 30 to 60% and drops in consumption of 2 to 7% were observed. If the opacity is greater than 1 K m-1, the drop in opacity can vary from 40 to 90% and consumption can drop from 3 to 25%.
• FIG. 1 is a diagram showing the general arrangement 'of the enclosure of the outlet pipe for the fuel to the engine, the magnetic means any one of the prior art hollow or not, the return line to the chamber and the communication with the tank, a filter being provided there.
• Fig. 2 is a diagram showing a variant of the previous arrangement, currently preferred, in which the fuel in the enclosure moves against the flow of a flow provided inside the magnetic means centered in the enclosure.
• Fig. 3 shows in more detail a device according to the invention, intended to be immersed in a tank, retained or not with a flexible connection (wire, etc.).
• Fig. 4 illustrates yet another variant of the device.
• FIG. 5 and 6 illustrate arrangements with forms of reservoir adapted to a particular embodiment of the invention.
• a fig. 7 illustrates consumption measurements carried out on an engine test bench.
• the device comprises a casing or enclosure 1 of tubular shape, made of non-metallic material and resistant to fuel, for example a segment of PVC tube of 40 mm of diameter.
• the device is connected to an outlet 6, via a nylon line 6 ′, for supplying fuel to the engine 20 (suction via a pump not shown), an inlet 8 for the recycled return fuel and an opening 10 in communication with the main tank 11.
• the fuel follows the path indicated by the arrows.
• the device illustrated is intended to be immersed in a reservoir 11.
• a particle filter 2 eg 10 microns
• a central tube 7 constituting a hollow magnetic means coaxial with the enclosure 1.
• One end of the tube communicates with the outlet pipe 6 from the fuel to the engine and the other end is open and extends to a predetermined distance from an end wall 9 of the enclosure, opposite the end communicating with the tank.
• the central tube 7 is surrounded by 7 series of three permanent magnets 4 of pe 6000 Gauss in the form of a ferrite disc with holes, for example 17 mm in outside diameter, 7 mm in inside diameter and 3 mm in thickness. Adjacent ceramic spacers 5 are also provided for separating the magnets. Wall or blade portions 3 hold the tube in the middle of the enclosure while allowing the passage of fuel towards the open end of the central tube, the fuel following a return journey.
• the blades can be oriented to impose a non-linear movement, eg helical or spiral, on the fuel moving around the central tube.
• Fig. 4 illustrates a wider variant of the enclosure of FIG. 3.
• the enclosure is not intended to be introduced or immersed in the main tank but is intended to be mounted in line on the supply circuit before the pump and possibly before the filter.
• There are also purge openings 13 and the opening 8c can also serve as a bleed or return fuel.
• Fig. 5 partially illustrates a bottom of a tank, for example made of plastic such as polypropylene or polyethylene, in the form of a funnel, the bottom being subjected to a magnetic field caused by the magnets 4a and comprising the fuel suction duct 6a and possibly the return duct 8a.
• Fig. 6 partially illustrates a bottom of another tank with a magnetized recess in the bottom of a tank, recess comprising the fuel suction pipe 6b and, in this example, the return pipe
• the recess can be located in other places, including at the lower level of a side wall of the tank.
• Fig. 7 illustrates consumption measurements carried out on an engine test bench with two load levels (10 and 15 Newton) at fixed speed. They show an average reduction in consumption of 14%. The tests were carried out on a Petter single-cylinder engine (bore
• the device according to the invention of FIG. 3 was inserted in the intake line of fuel, between the diesel filter and the injection pump (50 cm before the pump).
• the volume of the enclosure (annex tank) is estimated at 0.4 dm.
• the opacity measurements carried out on the EKOS 9000 opacieter show a reduction in the K factor of around 50% for identical conditions.
• the device according to the invention can be incorporated into a mounting kit ("suction kit” including, for example, filter, float, gauge etc.) which equips the tanks. It can also be integrated into a filter mounted on the line d fuel intake.
• a mounting kit including, for example, filter, float, gauge etc.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Sustainable Development (AREA)
• Sustainable Energy (AREA)
• Transportation (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Engineering & Computer Science (AREA)
• Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Applications Claiming Priority (5)

Publications (1)

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Family Applications (1)

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Family Cites Families (12)

• 1999
  • 1999-07-20 EP EP99936191A patent/EP1099054A1/de not_active Withdrawn
  • 1999-07-20 WO PCT/BE1999/000093 patent/WO2000005499A1/fr not_active Application Discontinuation
  • 1999-07-20 CA CA002337323A patent/CA2337323A1/fr not_active Abandoned
  • 1999-07-20 AU AU51422/99A patent/AU5142299A/en not_active Abandoned

Non-Patent Citations (1)

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