WO2000077381A1 - Kraftstoffversorgungsanlage - Google Patents
Kraftstoffversorgungsanlage Download PDFInfo
- Publication number
- WO2000077381A1 WO2000077381A1 PCT/EP2000/003700 EP0003700W WO0077381A1 WO 2000077381 A1 WO2000077381 A1 WO 2000077381A1 EP 0003700 W EP0003700 W EP 0003700W WO 0077381 A1 WO0077381 A1 WO 0077381A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel
- supply system
- internal combustion
- combustion engine
- parts
- 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
- F02M33/00—Other apparatus for treating combustion-air, fuel or fuel-air mixture
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0639—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
- F02D19/0649—Liquid fuels having different boiling temperatures, volatilities, densities, viscosities, cetane or octane numbers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02D19/0665—Tanks, e.g. multiple tanks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02D19/0668—Treating or cleaning means; Fuel filters
- F02D19/0671—Means to generate or modify a fuel, e.g. reformers, electrolytic cells or membranes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02D19/0673—Valves; Pressure or flow regulators; Mixers
- F02D19/0678—Pressure or flow regulators therefor; Fuel metering valves therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
- F02D19/081—Adjusting the fuel composition or mixing ratio; Transitioning from one fuel to the other
-
- 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
- F02M1/00—Carburettors with means for facilitating engine's starting or its idling below operational temperatures
- F02M1/16—Other means for enriching fuel-air mixture during starting; Priming cups; using different fuels for starting and normal operation
- F02M1/165—Vaporizing light fractions from the fuel and condensing them for use during starting
-
- 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
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/14—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding anti-knock agents, not provided for in subgroups F02M25/022 - F02M25/10
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Definitions
- the invention relates to a fuel supply system for an internal combustion engine with the features of the preamble of claim 1.
- Such a fuel supply system is known from DE 197 34 493 Cl, which has a fuel tank for liquid fuel.
- a fuel processing device namely an evaporation and condensation device, is provided, which on the input side removes the fuel Receives fuel tank, generates a low-boiling fuel part and a higher-boiling fuel part and provides these fuel parts on the output side.
- the low-boiling fuel part is stored in an intermediate tank and the higher-boiling fuel part in an additional tank.
- the known fuel supply system has a main fuel pump, which is connected on the suction side via a switching valve either to the fuel tank containing the fuel or to the additional tank containing the low-boiling fuel part, and is connected on the pressure side to a first input of a shuttle valve.
- a switching valve either to the fuel tank containing the fuel or to the additional tank containing the low-boiling fuel part, and is connected on the pressure side to a first input of a shuttle valve.
- the pressure side of an additional fuel pump is connected, which is connected on the suction side to the intermediate tank containing the higher-boiling fuel part.
- the output side of the shuttle valve is connected to the internal combustion engine.
- the known fuel supply system in conjunction with a corresponding control has setting means which make it possible, depending on certain operating states of the internal combustion engine, to provide the respective fuel parts and the fuel separately for the internal combustion engine.
- the auxiliary fuel pump is actuated for a start and a warm-up phase of the internal combustion engine, so that the internal combustion engine is supplied exclusively with the low-boiling fuel part via the shuttle valve.
- the main fuel pump is actuated, the changeover valve being switched so that it only supplies the higher-boiling fuel part.
- the changeover valve is switched so that it contains the one contained in the fuel tank Fuel supplies the main fuel pump, which feeds this to the internal combustion engine.
- the present invention deals with the problem of improving the possibilities of adapting the existing fuel to the requirements of the internal combustion engine in a fuel supply system of the type mentioned at the outset.
- the invention is based on the general idea that the refueled fuel provided in the fuel tank by means of a fuel processing device into fuel parts, i.e. into individual components or component mixtures of the refueled fuel, to be dismantled or divided and from these fuel parts and preferably also from the refueled fuel by means of a mixing arrangement which in principle enables any mixture of the fuels or fuel parts supplied to it that is optimal for the current operating state To produce a fuel mixture by a suitable mixture and to make it available to the internal combustion engine.
- This fuel mixture is generated by a targeted mixing of the previously generated fuel parts with one another or with the fuel originally filled.
- the mixing arrangement expediently has a controller which determines the fuel mixture associated with the current operating state and actuates the mixing arrangement to generate this fuel mixture accordingly.
- the associated, optimal fuel mixture can be determined for and for any operating condition through field tests the control can be stored in a retrievable manner.
- the control unit can obtain the data required for determining the current operating state of the internal combustion engine, for example from an electric motor control unit, so that no additional effort is required in this regard.
- the fuel parts generated by the fuel processing device can differ from one another by their boiling temperature and / or by their sulfur content and / or by their cetane number and / or by their reducing agent content.
- a low-boiling fuel part in petrol fuels leads to a significant reduction in the HC emissions of the internal combustion engine.
- the performance of the internal combustion engine can be increased with a higher-boiling fuel part which has a higher knock resistance, and at the same time the consumption decreases.
- a low-boiling and low-sulfur fuel part one can be used to increase.
- Catalyst poisoning can be avoided, especially in stratified charge operation of internal combustion engines with direct injection.
- a higher-boiling and sulfur-rich fuel part with a high knock resistance at high load works essentially stoichiometrically.
- a fuel part with a reduced cetane number can be provided for warm operation of the internal combustion engine, while a fuel part with an increased cetane number is advantageous for a cold start or for warming up.
- a proportion of fuel with an increased reducing agent content particularly for exhaust gas aftertreatment in lean-burn internal combustion engines, can improve the emission values.
- Fig. 1 is a circuit diagram-like schematic diagram of a fuel supply system according to the invention in a first embodiment
- Fig. 2 shows a fuel supply system according to the
- a fuel supply system 1 has a fuel tank 2 into which a liquid fuel 3 can be filled.
- the fuel supply system 1 also has a fuel processing device 4, which receives the fuel from the fuel tank 2 on the input side (see arrow 5) and the unchanged fuel 3 of the fuel tank 2 via a fuel line 6, and a first fuel part via a fuel line 7 (cf. 21 in FIG. 2), for example a low-boiling fuel part, and via a fuel line 8 a second fuel part (cf. item 22 in FIG. 2), for example a higher-boiling part Fuel part, emits.
- a fuel line 9 can also be provided, which bypasses the fuel processing device 4 and is shown with a broken line.
- the fuel processing device 4 can, for example, fractionate the supplied fuel by means of a gas feed pump by vacuum evaporation with subsequent pressure condensation, as a result of which a low-boiling fuel fraction is separated from a higher-boiling fuel fraction (cf. DE 197 13 841 Cl).
- the fuel processing device 4 can have a separation column with adsorption material, which generates the fuel parts from the fuel by means of a chromatographic method (cf. DE 196 52 681 Cl).
- the fuel lines 6 and 9 as well as 7 and 8 are each directly connected to a metering valve 10, 11 and 12, in the embodiment according to FIG. 2 the fuel processing device 4 is separate for each fuel part 21 and 22 Storage 13 and 14 connected downstream, which are each connected to the associated metering valve 10 or 12.
- the metering valves 10, 11 and 12 are adjustable in terms of the flow rate and are actuated by a controller 15 via corresponding control lines 16.
- the control 15 is coupled on the input side, for example, to an engine control (not shown) and receives parameter values from it, which enable the control 15 to determine the current operating state of an internal combustion engine 17.
- the controller 15 determines the optimum fuel mixture for this operating state and the fuel mixture required to achieve this fuel mixture Setting values for the metering valves 10, 11 and 12. Via the control lines 16, the control 15 then actuates the metering valves 10, 11, 12 in a corresponding manner in order to obtain the desired fuel mixture by mixing the fuel parts 21 and 22 and, if appropriate, the fuel 3.
- the fuel lines 6 or 9, 7 and 8 open downstream of the associated metering valves 10, 11, 12 into a common mixer chamber 18, in which the individual components of the fuel mixture mix and from which the distribution of the fuel mixture to the individual cylinders or Combustion chamber of internal combustion engine 17 takes place.
- the individual metering valves 10, 11, 12 form a metering valve arrangement, which can also be formed in a single metering valve body constructed accordingly.
- the metering valves 10, 11 and 12 form setting means which also make it possible to make the fuel parts 21 and 22 and the fuel 3 separately available for the internal combustion engine 17.
- the metering valves 10, 11, 12, the mixer chamber 18 and the control 15 form a mixing arrangement 20 which is highlighted in the figures by a border shown with broken lines.
- This mixer arrangement 20 receives the fuel parts 21 and 22 and the original fuel 3 on the input side and uses them to produce the optimum fuel mixture for the prevailing operating state.
- the mixer chamber 18 can expediently be formed by a fuel distributor of a fuel injector of the internal combustion engine 17, this fuel distributor supplying injection valves of the fuel injector with the fuel mixture provided. The injectors then in turn supply the individual combustion chambers of the internal combustion engine 17 with the fuel mixture in a conventional manner.
- Fuel supply system 1 in a motor vehicle such as a truck, a passenger car, an omnibus, is designed with the help of this fuel supply system 1 on board the vehicle for each operating state of the internal combustion engine 17 optimal fuel mixture can be generated or conditioned.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50009592T DE50009592D1 (de) | 1999-06-15 | 2000-04-26 | Kraftstoffversorgungsanlage |
EP00925237A EP1185781B1 (de) | 1999-06-15 | 2000-04-26 | Kraftstoffversorgungsanlage |
US10/016,817 US6622664B2 (en) | 1999-06-15 | 2001-12-13 | Fuel supply system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19927174A DE19927174C1 (de) | 1999-06-15 | 1999-06-15 | Kraftstoffversorgungsanlage |
DE19927174.7 | 1999-06-15 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/016,817 Continuation-In-Part US6622664B2 (en) | 1999-06-15 | 2001-12-13 | Fuel supply system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000077381A1 true WO2000077381A1 (de) | 2000-12-21 |
Family
ID=7911246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/003700 WO2000077381A1 (de) | 1999-06-15 | 2000-04-26 | Kraftstoffversorgungsanlage |
Country Status (4)
Country | Link |
---|---|
US (1) | US6622664B2 (de) |
EP (1) | EP1185781B1 (de) |
DE (2) | DE19927174C1 (de) |
WO (1) | WO2000077381A1 (de) |
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US4876989A (en) * | 1988-05-10 | 1989-10-31 | Technology Development Associates, Inc. | Enhanced performance of alcohol fueled engine during cold conditions |
US5546908A (en) * | 1994-01-07 | 1996-08-20 | Stokes; Richard A. | Plural fuel system for internal combustion engine |
DE19734493C1 (de) | 1997-08-08 | 1998-11-19 | Daimler Benz Ag | Kraftstoffversorgungsanlage für eine Brennkraftmaschine |
WO1999006683A1 (en) * | 1997-08-01 | 1999-02-11 | Ford Global Technologies, Inc. | Gasoline internal combustion engine |
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US3794000A (en) * | 1971-09-17 | 1974-02-26 | Ethyl Corp | Fuel system for separating volatile fuel from gasoline |
US5357908A (en) * | 1993-04-16 | 1994-10-25 | Engelhard Corporation | Fuel modification method and apparatus for reduction of pollutants emitted from internal combustion engines |
DE19652681C1 (de) * | 1996-12-18 | 1998-04-02 | Dornier Gmbh | Verfahren zur Abtrennung einzelner Komponenten aus motorischem Kraftstoff |
DE19652861B4 (de) | 1996-12-18 | 2005-02-10 | OCé PRINTING SYSTEMS GMBH | Verfahren zum Betreiben eines Druckwerks in einem elektrografischen Drucker oder Kopierer |
DE19713841C1 (de) * | 1997-04-04 | 1998-11-12 | Dornier Gmbh | Verfahren zur On-Board-Fraktionierung von motorischem Kraftstoff |
-
1999
- 1999-06-15 DE DE19927174A patent/DE19927174C1/de not_active Expired - Fee Related
-
2000
- 2000-04-26 WO PCT/EP2000/003700 patent/WO2000077381A1/de active IP Right Grant
- 2000-04-26 EP EP00925237A patent/EP1185781B1/de not_active Expired - Lifetime
- 2000-04-26 DE DE50009592T patent/DE50009592D1/de not_active Expired - Lifetime
-
2001
- 2001-12-13 US US10/016,817 patent/US6622664B2/en not_active Expired - Fee Related
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US2865355A (en) * | 1955-12-14 | 1958-12-23 | California Research Corp | Internal combustion engine fuel system |
US4220120A (en) * | 1973-12-14 | 1980-09-02 | Union Oil Company Of California | Internal combustion engine system and operation |
EP0060976A1 (de) * | 1981-03-19 | 1982-09-29 | Nissan Motor Co., Ltd. | Verfahren und Vorrichtung zum Starten einer Alkoholbrennkraftmaschine |
US4876989A (en) * | 1988-05-10 | 1989-10-31 | Technology Development Associates, Inc. | Enhanced performance of alcohol fueled engine during cold conditions |
US5546908A (en) * | 1994-01-07 | 1996-08-20 | Stokes; Richard A. | Plural fuel system for internal combustion engine |
WO1999006683A1 (en) * | 1997-08-01 | 1999-02-11 | Ford Global Technologies, Inc. | Gasoline internal combustion engine |
DE19734493C1 (de) | 1997-08-08 | 1998-11-19 | Daimler Benz Ag | Kraftstoffversorgungsanlage für eine Brennkraftmaschine |
Also Published As
Publication number | Publication date |
---|---|
US20020152999A1 (en) | 2002-10-24 |
DE50009592D1 (de) | 2005-03-31 |
DE19927174C1 (de) | 2000-10-12 |
US6622664B2 (en) | 2003-09-23 |
EP1185781A1 (de) | 2002-03-13 |
EP1185781B1 (de) | 2005-02-23 |
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