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
  • 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
  • F02M31/04—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture
  • F02M31/045—Fuel-air mixture
  • F02M31/047—Fuel-air mixture for fuel enriched partial mixture flow path
• • 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
  • F02M27/02—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like by catalysts
• • 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
  • F02M31/04—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture
• • 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
  • F02M31/04—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture
  • F02M31/045—Fuel-air mixture
• • 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
  • 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
  • F02M31/16—Other apparatus for heating fuel
  • F02M31/163—Preheating by burning an auxiliary mixture
• • 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
  • F02M31/16—Other apparatus for heating fuel
  • F02M31/18—Other apparatus for heating fuel to vaporise fuel
  • F02M31/186—Other apparatus for heating fuel to vaporise fuel with simultaneous mixing of secondary air
• • 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
  • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
• • 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
  • F02M31/16—Other apparatus for heating fuel
  • F02M31/18—Other apparatus for heating fuel to vaporise fuel
• • 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 an apparatus, a method, a computer program and a controller for operating an internal combustion engine, in particular for supplying heated fuel to the internal combustion engine.
• the object of the present invention is therefore to provide a To provide a device, a method, a computer program and a controller for the improved operation of an internal combustion engine, which facilitate in particular starting of the internal combustion engine at low temperatures.
• the present invention is based on the idea of heating fuel prior to introduction into an intake tract of an internal combustion engine by burning a portion of the fuel.
• a combustion chamber is provided with inlets for the supply of fuel and air or another oxidant.
• a part of the supplied fuel burns with the oxidizing agent.
• the released heat leads to heating of the unburned fuel.
• a small but sufficient part of the fuel is burned in order to vaporize the larger unburned part of the fuel with the heat released thereby.
• the heated, in particular vaporized fuel is introduced into the intake tract of the internal combustion engine.
• Catalyst may be provided in the combustion chamber, such as platinum.
• the catalyst reduces the flash point of the fuel and thus improves the ignition and the maintenance of the burning process.
• a part of a catalyst device, on whose surface the catalyst is arranged, are heated.
• Figure 1 is a schematic representation of a device for heating fuel and a controller for the device.
• Figure 2 is a schematic representation of a device for heating fuel and a controller for the device.
• Fig. 3 is a schematic representation of an internal combustion engine with a device for heating fuel and a controller
• FIG. 4 is a schematic flowchart of a method for heating fuel for an internal combustion engine.
• FIG. 1 shows a schematic representation of an intake tract 10 of an internal combustion engine, not shown in FIG. 1, with a device 20 for heating fuel.
• the device comprises a combustion chamber 21, which is essentially delimited by a wall 22 and a partially permeable member 23.
• the semi-permeable member immediately adjoins the lumen 11 of the intake tract 10 and forms an outlet of the combustion chamber 21 toward the lumen 11 of the intake tract 10.
• at least part of the combustion chamber 21 protrudes into the lumen 11 of the intake tract 10, so that the partially permeable member 23 is arranged in a central region of the cross section of the intake tract 10.
• the partially transmissive member 23 creates a pressure gradient between the combustion chamber 21 of the device
• the partially permeable member includes, for example, an open-celled foam, a woven fabric, a non-woven fabric, a net or other porous or microporous member having a plurality from regularly or irregularly arranged openings or pores.
• the partially transmissive member 23 has, for example, copper, aluminum, another metal or ceramic.
• the region of the intake tract 10 shown in FIG. 1 on which the device 20 is disposed is, for example, an area associated with all the cylinders.
• Such an area associated with all cylinders is an area through which air or other oxidant flows to all of the cylinders.
• the device 20 may be disposed on or in an area of the intake tract 10 by the air or other oxidant only to a cylinder or a part of the cylinders
• a plurality of devices of the type of the device 20 shown with reference to FIG. 1 may be provided on the internal combustion engine. These multiple devices may be arranged so that air or other oxidant that has passed one of the devices may flow into each cylinder.
• the combustion chamber 21 has a first inlet, on which a first valve 30 for supplying fuel into the combustion chamber 21 is arranged.
• the first valve 30 comprises a valve housing 31 with an opening 32 to the combustion chamber 21.
• the opening 32 of the valve housing 31 can be closed by a movable valve member 33.
• a spool drive 34 is configured to move the valve member 33 between a closed position in which it closes the opening 32 and an open position in which it releases the opening 32.
• the first valve 30 also has an inlet 36 which can be connected to a fuel line, not shown in Fig. 1, through which the first valve 30 fuel can be supplied.
• the combustion chamber 21 also has a second inlet, on which a second valve 40 for supplying air or another oxidizing agent into the combustion chamber 21 is arranged.
• the second valve 40 comprises a valve housing 41 with an opening 42 to the combustion chamber 21.
• a movable valve member 43 is connected by a coil drive 44 between a closed position in which it closes the opening 42 and an open position in which it the opening 42nd releases, movable.
• the second valve 40 has an inlet 46, via which the second valve 40 air or other oxidizing agent can be supplied.
• Both the first valve member 33 and its coil drive and the second valve member 43 and its coil drive can be designed to take any position between the closed and the open position can. In this case, the flow resistance and the amount of fuel or air flowing at a certain pressure difference can be continuously adjusted. Both the first valve 30 and its coil drive and the second valve
• a mean fuel or air flow through the first and second valves 30, 40 in this case can be determined by the duty cycle or the ratio of the time duration in which the valve 30, 40 is closed and the time duration in which the valve is open, be adjusted ..
• a catalyst device 51 is arranged, on the surface of a catalyst is arranged, which reduces the flash point or the temperature at which the intended fuel burns with the proposed oxidant.
• An example of the catalyst is platinum Pt.
• the catalyst device 51 comprises, for example, a net, a woven fabric, a fleece or a metal sheet of ceramic or another material with a smooth or a structured surface.
• the catalyst device 51 has, for example, the shape of a Ball or a tube with a circular or rectangular cross section.
• a heating device 52 is arranged on the catalyst device 51, by means of which at least part of the surface of the catalyst device 51 can be heated to a temperature at or above the flash point of the intended fuel and the intended oxidizing agent.
• the heating device 52 is arranged within the catalyst device close to its surface in a region facing the first valve 30.
• NTC Negative Temperature Coefficient
• the heater is integrated into the catalyst device.
• the catalyst device itself or a part thereof can be arranged in a circuit in order to heat it resistively.
• An injection cone 39 of the first valve 30 characterizes a space in which the first valve 30 can spray fuel in the form of a fanned spray or in the form of fine droplets.
• An injector cone 49 of the second valve 40 characterizes a region of space into which the second valve 40 can blow or spray air or other oxidant.
• the injection cones 39, 49 of the valves 30, 40 are dependent on the geometries of the openings 32, 42 and the valve members 33, 43. Both the injection cone 39 of the first valve and the
• Injection cone 49 of the second valve 40 are selected in this embodiment so that the
• Catalyst device 51 is completely or almost completely disposed within the injection cone 39, 49.
• the injection cone 49 of the second valve 40 is selected in this embodiment so that the catalyst device 51 substantially completely fills the injection cone 49.
• a temperature sensor 61 is further arranged, for example, a temperature-dependent electrical resistance or a thermocouple. In the example shown in FIG. 1, the temperature sensor 61 is arranged on a side of the catalyst device 51 facing away from the first nozzle 30 and the second nozzle 40, and in particular between the catalyst device 51 and the partially permeable member 23.
• the device 20 is coupled to a controller 70.
• a first output 71 of the controller 70 is coupled via a line 35 to the coil drive 34 of the first valve 30.
• a second output 72 of the controller 70 is coupled via a line 45 to the coil drive 44 of the second valve 40.
• a third output 73 of the controller 70 is coupled to the heater 52 via a line 55.
• An input 75 of the controller 70 is coupled via a line 65 to the temperature sensor 61.
• the controller 70 may include other inputs and outputs, not shown in FIG. 1, for receiving or transmitting information via corresponding signals or for controlling or controlling other devices not shown in FIG.
• Each of the lines 35, 45, 55, 65 comprises, for example, one or more individual lines.
• the lines 35 and 45 are each shown as pairs of individual lines.
• each of the lines 35, 45 comprises only a single line, wherein the corresponding circuit via a common ground, for example, the engine block or the housing of the
• Temperature sensor 61 may include lines 35, 45, 55, 65 optical fibers or other signal lines for transmission of optical or other signals.
• the controller 70 is configured to control the device 20.
• the logic or control characteristic of the controller is implemented, for example, in hardware, firmware or software.
• the device 20 and the controller 70 are designed to deliver preheated fuel, in particular vaporized fuel, into the lumen 11 of the intake tract 10 in predetermined operating states of the internal combustion engine. To do this, the controller 70 controls the first valve 30 and the second valve 40 to mix and partially burn predetermined amounts of fuel and air or other oxidant in the combustion chamber 21.
• the controller 70 controls the heater 52 so that it heats at least a portion of the surface of the catalyst device 51 to the point where combustion begins.
• the controller 70 controls the injected amount of air or other oxidant such that only a portion of the fuel in the combustor 21 burns and the unburned fuel is heated to a predetermined temperature, such as a temperature above its boiling point.
• the so-vaporized unburned fuel is introduced via the partially permeable member 23 into the lumen 11 of the
• FIG. 2 is a schematic representation of an intake tract 10 with a device 20 for heating fuel and a controller 70 according to a further embodiment.
• a combustion chamber 21 with a wall 22 and a partially permeable member 23, a first valve 30 to Supply of fuel, a second valve 40 for supplying air or other oxidizing agent, and a controller 70 are constructed and formed similar to or similar to the embodiment illustrated above with reference to FIG.
• the embodiment shown in FIG. 2 differs from the exemplary embodiment described above with reference to FIG. 1, inter alia, in the form and arrangement of the catalyst device 51 and the heating device 52.
• the catalyst device 51 is designed and arranged in the exemplary embodiment illustrated in FIG. that air or another oxidant enters the interior of the catalyst device 51 through the second valve 40.
• the catalyst device 51 has a gas-permeable
• the catalyst device 51 comprises a grid, a net, a woven fabric, a fleece or an open-pore foam of metal, ceramic or another sufficiently temperature-stable material.
• a catalyst is arranged similar to the embodiment shown above with reference to FIG. 1. Air or other oxidant is passed through the second valve 40 into the catalyst device 51 and burns on its outer surface with a portion of the fuel that is passed through the first valve 30 into the combustion chamber 21.
• the heater 52 in this embodiment includes a source of heat radiation 54, such as a light emitting diode or a laser diode, the
• the heating radiation 54 may be transmitted through a lens to a predetermined area of the surface of the Catalyst device 51 be bundled.
• a suitable wavelength of the heating radiation 54 may be selected, which is not or only slightly scattered or absorbed by the fuel spray.
• the first valve 30 and the heater 52 are alternately operated in cycles or injected fuel only after reaching the desired surface temperature of the catalyst device 51.
• the catalyst device shown with reference to FIG. 1 can be combined with the heating device shown with reference to FIG. 2.
• the catalyst device shown with reference to FIG. 2 can be combined with the heater shown in FIG. 1.
• the outlet may also be formed by one or more nozzles instead of by a large-area partially transmitting member. These nozzles or nozzles are then arranged, for example, in a central region of the cross section of the lumen 11 of the intake tract 10.
• FIG. 3 is a schematic illustration of an internal combustion engine 12 with a device 20 and a controller 70, as have been described above with reference to FIGS. 1 and 2.
• the devices 20 and the respective controller 70 are suitable for all types of internal combustion engines and all types of oxidants and fuels. Only as an example, the internal combustion engine 12 is shown as a piston engine in Fig. 3.
• the oxidizing agent air is described. Alternatively, other oxidizing agents can be used.
• the internal combustion engine 12 has an intake tract 10 with a lumen 11 in order to supply each individual cylinder 13 of the internal combustion engine 12.
• a Injection valve 14 is arranged to inject fuel into an air flow for filling the cylinder 13.
• the injectors 14 are disposed in the cylinders 13.
• the injection valves 14 are connected via fuel lines 15 with a fuel pump 16, which promotes fuel from a fuel tank, not shown in FIG. 3 to the injection valves 14.
• the arrangement of multiple injectors is also referred to as multi-point injection (MPI)
• MPI multi-point injection
• SPI single-point injection
• a single injection nozzle is arranged on the intake manifold 10 that fuel injected by them in each of the Cylinder can get.
• a throttle valve 17 is driven by a drive 18 and controls an inflow of fresh air from an air filter 19 in the intake tract 10 of the internal combustion engine 12.
• An output 74 of a controller 79 is connected to the drive 18 of the throttle valve 17.
• the controller 79 is a controller of the internal combustion engine 12, in addition to the
• Throttle valve 17 for example, the fuel pump 16, the injectors 14, intake valves or exhaust valves on the cylinders 13 and their control times or other control variables can control the internal combustion engine 12.
• Controller 70 may be coupled to controller 79 of internal combustion engine 12 (eg, via control lines). Alternatively, the controller 70 and the controller 79 are integrated.
• the first valve 30 provided for supplying fuel into the combustion chamber of the device 20 is connected to the fuel pump 16 via a fuel line 15. That for the supply of air to the combustion chamber of Device 20 provided second valve 40 is connected via an air line 47 with a portion of the intake between the air filter 19 and the throttle valve 17.
• the throttle valve 17 is closed or partially closed, this creates a pressure difference which allows air to be supplied to the combustion chamber of the device 20 via the second valve 40 when it is open.
• the first valve 30 can receive fuel from another fuel source, for example from its own fuel pump.
• the second valve 40 can receive air from another device, for example from a separate air filter and / or via a separate air blower.
• both the first valve 30 and the second valve 40 can be replaced by a respective pump or blower for metering fuel or oxidizing agent to the combustion chamber of the device 20.
• the controller 70 may be configured such that the amount of air burned in the combustion chamber of the device 20 and the ratio of the burned fuel to the unburned fuel are adjusted via the metered air quantity Temperature of the heated fuel has a predetermined value.
• the controller 70 has a corresponding implemented in hardware, firmware or software controller, such as a PID controller.
• the device 20 includes a thermostat that controls the supply of air or other oxidant to the combustion chamber 21, depending on the temperature of the heated fuel at or near the outlet formed by the partially permeable member 23.
• each of the devices 20 shown above with reference to FIGS. 1 to 3 may have only one controllable valve.
• both the fuel supply and the supply of air or other oxidant are controlled by a single actuator.
• other electric or non-electric drives can also be used, for example servo drives with a linear drive or a conventional rotating electric motor, ultrasonic motors, pneumatic drives, etc.
• FIG. 4 shows a schematic flow diagram of a method for heating fuel for an internal combustion engine, as carried out, for example, by means of one of the devices 20 shown above with reference to FIGS. 1 to 3 and, for example, by means of one of the controllers 70 illustrated above with reference to FIGS. 1 to 3 can be.
• the method illustrated with reference to FIG. 4 also with other devices and controlled by others
• the method can also be carried out in modified form after starting the internal combustion engine, for example in order to increase the mechanical power generated by the internal combustion engine.
• a catalyst device 51 is heated or heated to a predetermined temperature by means of a heating device 52.
• the predetermined temperature is, for example, at or above a flash point for the intended mixture of fuel and oxidizing agents.
• the predetermined temperature is at or above the flash point in the presence of the catalyst on the surface of the catalyst device 51.
• a second step 92 the internal combustion engine 12 is driven, for example by an electric or pneumatic starter motor. As a result, the internal combustion engine is accelerated to a predetermined minimum speed.
• a third step 93 the rotational speed of the internal combustion engine is measured. This measurement takes place during the driving of the internal combustion engine.
• a predetermined threshold which is for example at 180 rpm
• fuel and air are introduced into a combustion chamber 21 of the device 20.
• part of the fuel introduced burns with the introduced air.
• a sixth step 96 combustion of unburnt fuel heated into an intake tract 10 of FIG.
• the fifth step 95 and the sixth step 96 may be inevitable consequences of the preceding steps, in particular with a suitable choice of the predetermined threshold speed, with a suitable choice of introduced into the combustion chamber 21 fuel and air quantities and a suitable choice of the predetermined temperature of the catalyst device 51st
• a throttle valve 17 is set to a predetermined opening.
• the first step 91, the second step 92, the third step 93, the fourth step 94, the fifth step 95, the sixth step 96, and the seventh step 97 may be performed at least partially in a different order.
• it may be sufficient to supply the part of the surface of the catalyst device 51 to be heated only immediately before the supply of fuel and air heat.
• it may be sufficient to supply the part of the surface of the catalyst device 51 to be heated only immediately before the supply of fuel and air heat.
• Catalyst device has reached the predetermined temperature, the time at which the internal combustion engine has reached the predetermined speed, and the beginning of the supply of fuel and air to the combustion chamber together.
• the air-fuel ratio in the combustion chamber 21 can be adjusted so that at least the surface of the catalyst device 51 reaches the predetermined temperature completely as quickly as possible. This is for example at a ⁇ -value of the combustion of 1, i. complete conversion of fuel and oxidant.
• step 98 the temperature of the heated fuel is measured by means of a temperature sensor 61.
• step 99 the combustion in the combustion chamber 21 is controlled depending on the measured temperature of the heated fuel so that the heated fuel has a predetermined target temperature.
• Step 98 and the ninth step 99 are preferably repeated periodically or continuously.
• a tenth step 100 the burning in the combustion chamber 21 of the device 20 is stopped.
• the supply of fuel and / or the supply of air into the combustion chamber 21 are stopped.
• the burning in the combustion chamber 21 is stopped when the internal combustion engine 12 or at least relevant areas of surfaces of the internal combustion engine 12 have reached a predetermined temperature.
• the burning is terminated after a predetermined period of time, after which it is ensured that at least relevant surface areas of the internal combustion engine 12 have reached the predetermined temperature.
• This can be in a reciprocating engine, in which the temperature of the inlet side
• the predetermined period of time may be determined as a function of the ambient temperature or as Function of the temperature of the internal combustion engine can be adjusted.
• the entire intended for combustion in the internal combustion engine fuel can be preheated in the manner described above with reference to FIG. 4, before it via an intake 10 of the
• Internal combustion engine 12 is supplied. Alternatively, only a portion of the fuel provided for combustion in the internal combustion engine is heated in the manner described while other fuel of the internal combustion engine is supplied in a different manner, for example via injection valves 14. After the end of the starting operation, the amount of heated fuel can be reduced discontinuously or continuously be increased while the internal combustion engine 12 otherwise supplied amount of fuel is increased accordingly.
• the devices 20 described above with reference to FIGS. 1 to 3 and at least parts of the method described above with reference to FIG. 4 can also be used to fuel the internal combustion engine 12 after a start of an internal combustion engine and also when the internal combustion engine has already reached its operating temperature supply.
• Fuel can thus be increased, for example, to increase the maximum output from the internal combustion engine 12 mechanical power.
• Fuel can thus be increased, for example, to increase the maximum output from the internal combustion engine 12 mechanical power.
• a portion of a catalyst device 51 is heated in a combustion chamber 21 to a predetermined temperature.
• Fuel and air or other oxidant are directed into the combustion chamber 94.
• a portion of the fuel burns 95 with the oxidant in the combustion chamber 21 and heats 96 the unburned portion of the fuel.
• the temperature of the fuel so heated is measured 98 and the firing is controlled 99 depending on the measured temperature of the heated fuel so that the heated fuel has a predetermined temperature.
• the firing process is controlled, as in the process described above with reference to the figure, for example by controlling the supply of fuel and / or the supply of oxidant. If the internal combustion engine and in particular its surfaces on which fuel could condense, have already reached an elevated temperature, in particular the operating temperature, the temperature of the heated fuel can be set to a lower predetermined value than at the start of the
• the device illustrated above with reference to FIGS. 1 to 3 and the method illustrated above with reference to FIG. 4 can be used, for example, when ethanol is used as an Otto fuel or ethanol-containing gasoline fuels.
• Pure ethanol has a boiling point of 78.4 ° C at atmospheric pressure. Accordingly be low vapor pressure at temperatures at or below 0 0 C.
• the flash point of ethanol is 425 ° C.
• the temperature of the heated ethanol for example, to 200 0 C.
• To produce 1.55 g / s of ethanol gas at 200 ° C. for example, about 62 mg / s of ethanol are burned.

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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)
• Exhaust Gas After Treatment (AREA)
• Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

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• 2007
  • 2007-08-21 DE DE102007039406.5A patent/DE102007039406B4/de active Active
• 2008
  • 2008-07-30 BR BRPI0815587-9A2A patent/BRPI0815587A2/pt not_active Application Discontinuation
  • 2008-07-30 SE SE1050202A patent/SE536307C2/sv unknown
  • 2008-07-30 WO PCT/EP2008/059973 patent/WO2009024439A1/de active Application Filing
  • 2008-07-30 KR KR20107006140A patent/KR101494704B1/ko active IP Right Grant

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