WO2010029018A1 - Verfahren und vorrichtung zum bestimmen des ethanol-anteils des kraftstoffes in einem kraftfahrzeug - Google Patents
Verfahren und vorrichtung zum bestimmen des ethanol-anteils des kraftstoffes in einem kraftfahrzeug Download PDFInfo
- Publication number
- WO2010029018A1 WO2010029018A1 PCT/EP2009/061445 EP2009061445W WO2010029018A1 WO 2010029018 A1 WO2010029018 A1 WO 2010029018A1 EP 2009061445 W EP2009061445 W EP 2009061445W WO 2010029018 A1 WO2010029018 A1 WO 2010029018A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel
- internal combustion
- lean
- combustion engine
- ethanol
- Prior art date
Links
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 115
- 239000000446 fuel Substances 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims description 26
- 238000002485 combustion reaction Methods 0.000 claims abstract description 53
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 238000010586 diagram Methods 0.000 description 11
- 230000008859 change Effects 0.000 description 6
- 239000003502 gasoline Substances 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 3
- 238000003745 diagnosis Methods 0.000 description 3
- 239000002031 ethanolic fraction Substances 0.000 description 3
- 101100329003 Arabidopsis thaliana COV1 gene Proteins 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 239000004148 curcumin Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010972 statistical evaluation Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- 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
-
- 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
- F02D19/0602—Control of components of the fuel supply system
- F02D19/0607—Control of components of the fuel supply system to adjust the fuel mass or volume flow
- F02D19/061—Control of components of the fuel supply system to adjust the fuel mass or volume flow by controlling fuel injectors
-
- 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
- F02D19/082—Premixed fuels, i.e. emulsions or blends
- F02D19/084—Blends of gasoline and alcohols, e.g. E85
-
- 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
- F02D19/082—Premixed fuels, i.e. emulsions or blends
- F02D19/085—Control based on the fuel type or composition
- F02D19/087—Control based on the fuel type or composition with determination of densities, viscosities, composition, concentration or mixture ratios of fuels
- F02D19/088—Control based on the fuel type or composition with determination of densities, viscosities, composition, concentration or mixture ratios of fuels by estimation, i.e. without using direct measurements of a corresponding sensor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/008—Controlling each cylinder individually
- F02D41/0085—Balancing of cylinder outputs, e.g. speed, torque or air-fuel ratio
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2835—Specific substances contained in the oils or fuels
- G01N33/2852—Alcohol in fuels
-
- 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
- F02D19/082—Premixed fuels, i.e. emulsions or blends
- F02D19/085—Control based on the fuel type or composition
- F02D19/087—Control based on the fuel type or composition with determination of densities, viscosities, composition, concentration or mixture ratios of fuels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0611—Fuel type, fuel composition or fuel quality
- F02D2200/0612—Fuel type, fuel composition or fuel quality determined by estimation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/12—Introducing corrections for particular operating conditions for deceleration
- F02D41/123—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1497—With detection of the mechanical response of the engine
- F02D41/1498—With detection of the mechanical response of the engine measuring engine roughness
-
- 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 present invention relates to a method and apparatus for determining the ethanol content of the fuel in a motor vehicle.
- ethanol ethanol
- concentration of ethanol in the tank fuel may change from one tank fill to the other tank, depending on the fuel grade. Any ethanol content of the fuel can be between 0 and 100%.
- the operation control unit recognizes the new fuel composition as soon as possible and takes into account in their control strategies.
- the ⁇ method allows a reliable determination of the ethanol content only in the case of an intact fuel system. Since the fuel system diagnosis (FSD: Fuel System Diagnosis) is also carried out using the ⁇ values measured by the ⁇ sensor, the ⁇ process does not provide reliable values. Namely, the operation control unit can not clearly determine whether a deviation of the ⁇ value from a changed ethanol content of the fuel or a failure of the fuel system results.
- FSD Fuel System Diagnosis
- US 6,298,838 Bl discloses a method for controlling engine runoff in which the ethanol content of the fuel supplied to the engine is varied. Accordingly, a running noise of the engine is measured, and when a first threshold is exceeded, the fuel supply to the engine increased by a first ethanol content. Then the rough running is measured again. If the turbulence due to this ethanol increase has dropped below the first threshold value, but is above a second, lower threshold value, the fuel supplied to the engine is further increased by a second ethanol fraction in order to bring the uneven running below the second threshold value.
- the present invention has for its object to provide a method for determining the ethanol content of the fuel of a motor vehicle, which is independent of a measurement of the air ratio ⁇ in the exhaust gas of the internal combustion engine.
- the present invention is based on the finding that ethanol-fueled internal combustion engines exhibit improved lean-running capability. This means that the lean running limit of the internal combustion engine with a higher proportion of ethanol in the fuel shifts in the direction of lean. This connection between lean running limit and ethanol content of the fuel is used to determine the ethanol content.
- an amount of fuel is injected in the operating range of the fuel cut of the internal combustion engine in a cylinder of the internal combustion engine, with which there is no combustion of the air / fuel mixture, the fuel quantity progressively increased until it comes to a combustion, in this case the smoothness of the internal combustion engine monitored for this cylinder and recognized the lean limit as reached when the smoothness exceeds a predetermined threshold. From the required to reach the lean running limit increase of the injected fuel quantity is then closed to the ethanol content of the fuel.
- the ethanol content of the fuel is obtained from a map in which the ethanol content is plotted above the required to reach the lean running limit increase in the injected fuel. This has the advantage that it is particularly easy to perform.
- the process according to the invention is used in particular for plausibilizing the ethanol fraction obtained by means of another process (in particular the ⁇ process). Furthermore, it is possible with the inventive method to plausibilize the signal of a arranged in the fuel circuit of the internal combustion engine fuel sensor, in particular an ethanol sensor.
- 1 is a schematic block diagram of an internal combustion engine with associated control device
- FIG. 2 is a graph showing the smooth running value COV versus the air ratio ⁇ .
- 3 is a diagram in which the time course of a fuel cut-off phase is shown
- 5 is a diagram illustrating the amount of fuel to be injected over time t
- Fig. 6 is a diagram showing the air ratio ⁇ over the time t and
- Fig. 7 is a diagram showing the running rest value COV over the time t. 1 shows a schematic representation of an operable for both with gasoline and alcohol or with any mixing ratio of these fuels internal combustion engine 1 of a motor vehicle.
- Such vehicles are referred to as flexible fueled vehicles (FFV) or variable fuel vehicles (VFVs).
- FMV flexible fueled vehicles
- VFVs variable fuel vehicles
- FIG. 7 only the necessary components for understanding the invention are shown. The invention will be explained with reference to an internal combustion engine with 4 cylinders Z1-Z4, but it is also applicable to internal combustion engines with a different number of cylinders and regardless of the type of engine concept, eg four-stroke gasoline engine, two-stroke engine, hub or rotary engine.
- the internal combustion engine 1 is associated with an intake tract 2 and an exhaust tract 3, which communicate with the combustion chambers of the cylinders Z1-Z4 of the internal combustion engine 1 by means of inlet valves and exhaust valves (not shown).
- the internal combustion engine 1 is supplied via the intake tract 2, the fresh air required for combustion of the fuel / air mixture.
- a load sensor 4 is provided in the intake tract 2 u. a.
- Load sensor 4 for the internal combustion engine 1 for example, an air mass meter or a Saugrohr horrsensor be provided.
- the signal of the load sensor 4 is marked with the reference symbol L.
- the necessary fuel for combustion or the fuel mixture is taken from a fuel tank 5 and the individual cylinders Zl to Z4 associated injectors 6 supplied. It is possible to inject the fuel into the individual intake pipes of the cylinders or directly into the combustion chambers of the corresponding cylinders (direct fuel injection).
- the exhaust gas flows through the exhaust tract 3, an exhaust gas catalyst 7 and a muffler, not shown, purified into the environment.
- an exhaust gas sensor 8 is provided, which is preferably designed as a lambda sensor and detects a residual oxygen content in the exhaust gas and a speaking signal ⁇ outputs.
- the internal combustion engine 1 is associated with a speed sensor 9, which emits a signal corresponding to the rotational speed N of the crankshaft of the internal combustion engine.
- a sensor 11 is incorporated in the fuel circuit, which detects the fuel composition, ie the ethanol content in the fuel.
- a control device 10 For controlling and regulating the internal combustion engine 1, a control device (ECU, electronic control unit) 10 is provided, which in addition to the above-mentioned sensors further, necessary for the operation of the internal combustion engine 1 sensors are assigned, which are not explicitly shown in the figure and their signals the figure generally indicated by the reference ES are supplied.
- the sensors record different measured quantities and determine the measured value of the measured variable in each case.
- the control device 10 determines dependent on at least one of the measured variables manipulated variables, which are then converted into one or more control signals for controlling the actuators by means of appropriate Stellan- drives.
- the actuators are, for example, a throttle valve in the intake tract and the injection valves 6. Further signals for further actuators, which are necessary for operating the internal combustion engine 1, but not explicitly shown, are generally identified in the figure by the reference symbol AS.
- control device 10 a plurality of code-based engine control functions are implemented by software.
- the control device 10 determines the appropriate ignition timing and the injection duration in dependence on the load signal L and the rotational speed N taking into account the composition of the flex-fuel fuel.
- a so-called fuel cut-off function 12 is implemented in the control device 10.
- Under fuel cut is the complete interruption of the fuel flow to the internal combustion engine in overrun conditions to understand.
- the shift operation is a load state in which a negative work is performed, ie the internal combustion engine does not do any work, but takes up work. Sliding operation occurs when the gasoline engine when the throttle is suddenly closed, the speed of the engine is higher than the idle speed, so that the vehicle mass is delayed on the working of the engine.
- the control device 10 is associated with a data memory 13, in which u.a. Maps KF and thresholds SW are stored, the meaning of which will be explained with reference to the following figures.
- the invention makes use of the fact that with an increase in the ethanol content of the fuel, the lean running ability of the internal combustion engine improves.
- This relationship is apparent from the diagram of Figure 2, in which the smooth running value COV (Coefficient Of Variance) is plotted against the air ratio ⁇ for different fuels.
- the dimensionless running quietness COV characterizes the idle rest of an internal combustion engine; This means that the uneven running becomes greater with increasing running smoothness value COV.
- the ROZ95 and ROZ 100 curves shown in the graph of FIG. 2 are for pure gasoline of a research octane number of 95 and 100, while the curves E5, E 50, E85 and E100 for fuels with an ethanol content of 5%, 50%, 85% or 100% apply.
- the lean burn limit for gasoline ROZ95 is at a ⁇ value of about 1.25
- the lean burn limit for pure ethanol (El00) is at a ⁇ value of about 1.42.
- the fuel cut-off function 12 is activated.
- the throttle valve opening angle arranged in the intake throttle and the instantaneous speed N of the internal combustion engine 1 can be used and these two parameters are set in a known manner in relation.
- the logic signal for overrun fuel cut is at 0 level ( Figure 3)
- logic signal for fuel cut to I level and the fuel supply for all cylinders Zl - Z4 is disabled (state "OFF" in Figure 4). In a conventional overrun cutoff function, this fuel cutoff would be maintained for all cylinders until time ts AE .
- the fuel supply to the cylinder Z released while it remains blocked for the other cylinders Z2-Z4 at the time t.
- the fuel quantity is progressively increased. In FIG. 5 this is illustrated by a factor K for the quantity of fuel to be injected.
- the smoothness of the internal combustion engine is monitored for this cylinder Zl. Since the monitoring of the smooth running in the prior art (see, for example, DE 41 22 139 and DE 197 41 965) is known, this will not be discussed in detail. As shown in FIG. 7, the smooth running value COV1 for the first cylinder Z1 becomes progressively larger (FIG. 7), while the one to be injected Fuel quantity continuously increased and thus the air / fuel mixture is enriched (air ratio ⁇ decreases from the value 2.0, Fig.6).
- the COV value representing the lean running limit M was assumed to be 5.
- the reference character KM in Fig. 5 is that factor for the
- the proportion of ethanol is expediently read from a characteristic diagram KF of the control device 10, in which the ethanol content is plotted over the factor K M.
- KF characteristic diagram of the control device 10
- it may also be expedient to apply in the map the ethanol content over ⁇ M , where ⁇ M 1 / K M.
- the ethanol content of the fuel determined in this way can be used to check the plausibility of the ethanol fraction obtained by means of another process.
- a significant advantage of the method according to the invention is that it does not depend on a measurement of the ⁇ value. This plausibility check can therefore be used to determine whether a change in the ⁇ value to a Change in the ethanol content or a failure of the fuel system is based.
- the operating control unit can then perform the usual ⁇ adaptation method and thus the fuel system diagnosis (FSD).
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Food Science & Technology (AREA)
- General Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020107029443A KR101254673B1 (ko) | 2008-09-11 | 2009-09-04 | 모터 차량에서 연료의 에탄올 비율을 결정하는 방법 및 장치 |
US13/000,193 US8387445B2 (en) | 2008-09-11 | 2009-09-04 | Method and apparatus for determining the ethanol proportion of the fuel in a motor vehicle |
SE1051374A SE536056C2 (sv) | 2008-09-11 | 2009-09-04 | Metod och apparat för att bestämma proportionen etanol i bränslet i ett motorfordon |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008046719.7 | 2008-09-11 | ||
DE102008046719A DE102008046719B3 (de) | 2008-09-11 | 2008-09-11 | Verfahren und Vorrichtung zum Bestimmen des Ethanol-Anteils des Kraftstoffes in einem Kraftfahrzeug |
Publications (1)
Publication Number | Publication Date |
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WO2010029018A1 true WO2010029018A1 (de) | 2010-03-18 |
Family
ID=41110394
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2009/061445 WO2010029018A1 (de) | 2008-09-11 | 2009-09-04 | Verfahren und vorrichtung zum bestimmen des ethanol-anteils des kraftstoffes in einem kraftfahrzeug |
Country Status (5)
Country | Link |
---|---|
US (1) | US8387445B2 (de) |
KR (1) | KR101254673B1 (de) |
DE (1) | DE102008046719B3 (de) |
SE (1) | SE536056C2 (de) |
WO (1) | WO2010029018A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US9046051B2 (en) * | 2011-06-09 | 2015-06-02 | GM Global Technology Operations LLC | Method for operating a spark-ignition, direct-injection internal combustion engine |
FR3009385A1 (fr) * | 2013-08-01 | 2015-02-06 | Peugeot Citroen Automobiles Sa | Procede de diagnostic sur une mesure ou une estimation d'un taux d'alcool dans un carburant au cours d'une phase transitoire de charge ou de re-injection apres coupure |
US10330040B2 (en) * | 2016-06-14 | 2019-06-25 | Ford Global Technologies, Llc | Method and system for air-fuel ratio control |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03217644A (ja) * | 1990-01-19 | 1991-09-25 | Mitsubishi Motors Corp | 燃料ブレンド率検出方法 |
US6298838B1 (en) * | 2000-04-19 | 2001-10-09 | Daimlerchrysler Corporation | Ethanol content learning based on engine roughness |
DE102006043341A1 (de) * | 2006-09-15 | 2008-03-27 | Siemens Ag | Verfahren zum Bestimmen des Ethanol-Anteils des Kraftstoffes in einem Kraftfahrzeug |
Family Cites Families (9)
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US4059411A (en) * | 1966-12-20 | 1977-11-22 | Smith Marvin M | Method for extending the lower lean limit of running of internal combustion engines and improving the combustion of fluid fuels |
DE4122139C2 (de) * | 1991-07-04 | 2000-07-06 | Bosch Gmbh Robert | Verfahren zur Zylindergleichstellung bezüglich der Kraftstoff-Einspritzmengen bei einer Brennkraftmaschine |
DE19741965C1 (de) * | 1997-09-23 | 1999-01-21 | Siemens Ag | Verfahren zur Laufruheregelung |
US5901671A (en) * | 1997-10-29 | 1999-05-11 | Daimlerchrysler Corporation | Method of determining the composition of fuel in a flexible fueled vehicle after fuel blending |
US5950599A (en) * | 1997-10-29 | 1999-09-14 | Chrysler Corporation | Method of determining the composition of fuel in a flexible fueled vehicle without an O2 sensor |
US6206940B1 (en) * | 1999-02-12 | 2001-03-27 | Exxon Research And Engineering Company | Fuel formulations to extend the lean limit (law770) |
US6714856B2 (en) * | 2001-10-18 | 2004-03-30 | Daimlerchrysler Corporation | Ethanol content rationality for a flexible fueled vehicle |
DE10257686A1 (de) * | 2002-12-10 | 2004-07-15 | Siemens Ag | Verfahren zum Anpassen der Charakteristik eines Einspritzventils |
US7523723B2 (en) * | 2006-08-11 | 2009-04-28 | Gm Global Technology Operations, Inc. | System and method for determining ethanol content in fuel |
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2008
- 2008-09-11 DE DE102008046719A patent/DE102008046719B3/de active Active
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2009
- 2009-09-04 KR KR1020107029443A patent/KR101254673B1/ko active IP Right Grant
- 2009-09-04 WO PCT/EP2009/061445 patent/WO2010029018A1/de active Application Filing
- 2009-09-04 SE SE1051374A patent/SE536056C2/sv unknown
- 2009-09-04 US US13/000,193 patent/US8387445B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH03217644A (ja) * | 1990-01-19 | 1991-09-25 | Mitsubishi Motors Corp | 燃料ブレンド率検出方法 |
US6298838B1 (en) * | 2000-04-19 | 2001-10-09 | Daimlerchrysler Corporation | Ethanol content learning based on engine roughness |
DE102006043341A1 (de) * | 2006-09-15 | 2008-03-27 | Siemens Ag | Verfahren zum Bestimmen des Ethanol-Anteils des Kraftstoffes in einem Kraftfahrzeug |
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KR101254673B1 (ko) | 2013-04-15 |
US8387445B2 (en) | 2013-03-05 |
KR20110022637A (ko) | 2011-03-07 |
DE102008046719B3 (de) | 2010-03-04 |
SE1051374A1 (sv) | 2011-03-15 |
US20110146388A1 (en) | 2011-06-23 |
SE536056C2 (sv) | 2013-04-16 |
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