WO2007131814A1 - Verfahren und vorrichtung zur ermittlung der zusammensetzung eines gasgemisches eines mit einem cng-gas befüllten kraftstofftanks eines kraftfahrzeugs - Google Patents
Verfahren und vorrichtung zur ermittlung der zusammensetzung eines gasgemisches eines mit einem cng-gas befüllten kraftstofftanks eines kraftfahrzeugs Download PDFInfo
- Publication number
- WO2007131814A1 WO2007131814A1 PCT/EP2007/051959 EP2007051959W WO2007131814A1 WO 2007131814 A1 WO2007131814 A1 WO 2007131814A1 EP 2007051959 W EP2007051959 W EP 2007051959W WO 2007131814 A1 WO2007131814 A1 WO 2007131814A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- fuel tank
- ethane
- pressure
- composition
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 92
- 239000002828 fuel tank Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 20
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 claims abstract description 81
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000001294 propane Substances 0.000 claims abstract description 24
- 238000002485 combustion reaction Methods 0.000 claims abstract description 22
- 239000001273 butane Substances 0.000 claims abstract description 14
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims abstract description 14
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims abstract description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 122
- 238000004364 calculation method Methods 0.000 claims description 23
- 239000007924 injection Substances 0.000 claims description 20
- 238000002347 injection Methods 0.000 claims description 20
- 239000000470 constituent Substances 0.000 claims description 8
- 238000001704 evaporation Methods 0.000 claims description 6
- 230000008020 evaporation Effects 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 129
- 239000000446 fuel Substances 0.000 abstract description 11
- 239000007788 liquid Substances 0.000 description 11
- 239000003345 natural gas Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 239000003502 gasoline Substances 0.000 description 5
- MEKDPHXPVMKCON-UHFFFAOYSA-N ethane;methane Chemical compound C.CC MEKDPHXPVMKCON-UHFFFAOYSA-N 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 ethane (C 2 H 6 ) Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- KOWXKIHEBFTVRU-UHFFFAOYSA-N nga2 glycan Chemical compound CC.CC KOWXKIHEBFTVRU-UHFFFAOYSA-N 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
Classifications
-
- 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
- F02D19/02—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 gaseous fuels
- F02D19/026—Measuring or estimating parameters related to the fuel supply system
- F02D19/029—Determining density, viscosity, concentration or composition
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
-
- 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
- F02D19/02—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 gaseous 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
- F02D19/02—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 gaseous fuels
- F02D19/026—Measuring or estimating parameters related to the fuel supply system
- F02D19/027—Determining the fuel pressure, temperature or volume flow, the fuel tank fill level or a valve position
-
- 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
- F02D41/0027—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures the fuel being gaseous
-
- 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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0215—Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
-
- 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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0221—Fuel storage reservoirs, e.g. cryogenic tanks
-
- 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
- G01N33/22—Fuels; Explosives
- G01N33/225—Gaseous fuels, e.g. natural gas
-
- 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
- F02D2200/0602—Fuel pressure
-
- 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
- F02D2200/0606—Fuel temperature
-
- 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
- F02D37/00—Non-electrical conjoint control of two or more functions of engines, not otherwise provided for
- F02D37/02—Non-electrical conjoint control of two or more functions of engines, not otherwise provided for one of the functions being ignition
-
- 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 method and a device for determining the gas composition of a CNG gas mixture filled with a fuel tank of a motor vehicle according to the preamble of the independent claims 1 and 15.
- CNG gas natural gas
- the CNG gas mixture is also known as natural gas.
- a CNG vehicle can be operated either exclusively with natural gas (monovalent operation) or as a bi-fuel variant optionally with gasoline or natural gas.
- the natural gas is highly compressed under high pressure at about 200 bar and carried in one or more pressure-safe fuel tanks in the motor vehicle.
- the main component of natural gas is 85 - 98% methane (CH 4 ).
- the natural gas also contains larger amounts of higher hydrocarbons, such as ethane (C 2 H 6 ), propane (C3H 8 ) and butane (C 4 Hi 0 ).
- ethane C 2 H 6
- propane C3H 8
- butane C 4 Hi 0
- Natural gas The reason for this is that the components ethane, propane and butane have a relatively low vapor pressure and therefore liquefy rapidly under pressure.
- the vapor pressure is about 38 bar at 20 0 C for ethane, 8.5 bar for propane and 2.0 bar for butane.
- Methane the main constituent of natural gas, has a vapor pressure of 1.47 bar only at a temperature of minus 157 ° C.
- Propane then evaporates the liquid propane content. From now on, a fuel mixture of methane, ethane and propane is burned.
- results for the performance of the engine has significant cylinder fill, mixture formation, fuel injection duration, and combustion effects. In particular, this can also affect the exhaust emissions.
- the invention has for its object to improve the gas injection into the combustion chamber of an internal combustion engine, taking into account the current gas composition of the CNG gas in the fuel tank. This object is achieved with the characterizing features of the independent claims 1 and 15.
- the measures listed in the dependent claims advantageous refinements and improvements of the method specified in claim 1 are given. It is considered to be particularly advantageous that the actual vapor pressure of a constituent of the CNG gas can be very easily taken from a previously stored table or pressure curve. As in the fuel tank continuously the temperature and the gas pressure are measured, can at further continuous removal of gas, the current vapor pressure, for example, ethane are taken from the horizontally extending curve part of the stored pressure curve.
- the calculation of the vapor pressure can be calculated with another formula, if the gas temperature in
- Fuel tank, the gas constant and the gas density are known.
- the measured vapor pressure (actual value) is compared with the calculated nominal value. In this way, a mistake can be detected very easily.
- An essential advantage of the invention is also seen in the fact that the amount of gas to be injected for the internal combustion engine of the motor vehicle is adjusted as a function of the current gas composition. As a result, in particular, energy differences of the gas components can be compensated. It is further considered to be particularly advantageous that the amount of gas to be injected is adjusted taking into account its energy content in relation to the modeled absorption behavior of the internal combustion engine. This adjustment, for example, by adjusting the ignition angle and / or alternatively by
- these adjustments can For example, be carried out in the starting phase, during warm-up and / or lean operation.
- Gas composition is performed when in particular the environmental conditions, especially the temperature and / or the gas pressure in the fuel tank have changed.
- the newly determined gas composition is then taken into account in a new engine start accordingly.
- the device for determining the gas composition has a program-controlled computing unit.
- the gas composition can be determined with the help of an algorithm and using the measured temperature and the gas pressure in the fuel tank very easily and without much computational effort.
- the arithmetic unit is integrated in an engine control unit, which is already present in the motor vehicle.
- the existing engine control unit requires only a corresponding software program with which the object of the invention can be achieved.
- FIG. 1 shows a block diagram of a device according to the invention for determining the gas composition
- FIG. 2 shows a first diagram with a pressure curve
- FIG. 3 shows a second diagram
- FIG. 4 shows a flow chart for the device according to the invention.
- the block diagram of Figure 1 shows an inventive embodiment in which an internal combustion engine 1 is connected to an injection system 3.
- the internal combustion engine 1 is designed as a gasoline engine.
- the gasoline engine can be designed monovalent for the combustion of CNG gas or bivalent operation for switching to gasoline injection or gas injection.
- the gas injection takes place by means of the injection system 3.
- the injection system 3 is connected via a hydraulic line 7 to a fuel tank 2, in which the CNG gas mixture is stored.
- Fuel tank 2 is designed high pressure resistant, so that it withstands the usual filling pressure up to 200 bar. Due to the high gas pressure, the CNG gas mixture is partially stored in the liquid state.
- the CNG gas mixture contains 85-98% of methane as its main constituent, which is in gaseous form due to its vapor pressure.
- the components ethane, propane and butane have a substantially lower vapor pressure, so that these portions are stored in liquid form in the fuel tank 2.
- a pressure sensor 4 and a temperature sensor 5 are arranged in or on the tank. These sensors 4, 5 continuously measure the temperature T and the gas pressure (system pressure) P within the fuel tank 2. The measured values are forwarded to a computer unit 6 via corresponding electrical lines. On the basis of the received data, the arithmetic unit 6 calculates a current gas composition within the fuel tank 2 or the gas system with the aid of a corresponding algorithm, which will be explained in more detail later.
- the arithmetic unit 6 essentially has a control program with which various parameters, for example the vapor pressure of a constituent of the CNG gas mixture, the tank volume, the gas composition, etc., are calculated.
- the arithmetic unit 6 is integrated in an engine control unit, which is already present for the control of the internal combustion engine.
- the operation of this arrangement will be explained in more detail with reference to the first diagram of Figure 2.
- the diagram shows a pressure curve in which the gas pressure p in the fuel tank, as measured by the pressure sensor 4, is plotted on the Y-axis.
- the time curve of the gas pressure p, which is measured by the pressure sensor 4, is plotted on the X-axis.
- the fuel tank is filled with the CNG gas mixture, wherein the CNG gas mixture contains, among other things, the components ethane, propane and butane, in addition to methane. It is assumed that the fuel tank is filled with a gas pressure of 200 bar.
- the pressure curve shown in Figure 2 shows an example of the relationship between the component methane, ethane and propane. For the butane portion, the pressure curve would continue to run analogously.
- the gas temperature and the gas pressure are continuously measured in the fuel tank.
- the vapor pressure of ethane is calculated in the arithmetic unit. The calculation of the
- vapor pressure of ethane can also be determined from the pressure curve shown in FIG. 2, since the point in time at which the ethane fraction begins to evaporate can be removed at about 38 bar when the vapor pressure value is reached.
- This part corresponds to the horizontal curve part 2.
- the sloping curve part 1 which runs between the pressure values 200 and 38 bar, indicates, however, that in this pressure range only the methane gas is present, since the other components of the gas mixture in the range below 38 bar in liquid phase.
- ethane Upon reaching the gas pressure of 38 bar, ethane begins to evaporate in such a way that, in spite of the further gas removal, the gas pressure in the fuel tank does not drop further but does not increase. This is recognizable by the horizontal curve 2.
- the vapor pressure is determined by the formula
- p d is the vapor pressure
- p is the gas wick
- R is a gas constant
- T is the gas temperature
- the arithmetic unit or the engine control unit reacts. At this time, the tank contents are composed of the remaining amount of gaseous methane and the amount of ethane accumulated in the past. In this vapor pressure p d "38 bar vaporized ethane, so that the engine is now a mixed gas of methane, ethane and air burns, whereby its energy content is different from the case of pure methane combustion.
- the amount of gas to be introduced into the cylinder must be adjusted according to the current mixture quality to meet the changed chemical composition of the fuel (X% methane, Y% ethane) and to maintain the defined air-fuel ratio.
- the composition of the gas mixture and thus the to be set by the engine control injection quantity changes continuously. The change takes place until all ethane has evaporated.
- the ignition angle can be adjusted and / or the injection duration can be adjusted in accordance with the energy content or the calorific value of the gas mixture.
- the vaporization of the gas components for propane takes place in a similar manner to that described above for ethane. If the tank pressure drops to about 8.5 bar, then the liquid propane content evaporates, so that according to the curve part 4, the pressure in the fuel tank remains constant. Only when all of the propane fraction has evaporated and gas continues to be withdrawn, the gas pressure in the fuel tank decreases further according to the curve 5.
- a special situation may also arise when the vehicle is parked and change the ambient conditions, in particular the temperature and the pressure conditions in the fuel tank during the service life.
- the gas pressure in the fuel tank can be greater than the vapor pressure of a gas component.
- the gas pressure may be lower or constant to the vapor pressure.
- the ratio between methane and ethane is shown on the Y axis.
- the amount of gas taken is plotted in Kg. From the sloping branch of the methane / ethane curve can be seen that at high gas pressure and a small amount of gas taken from the methane content in the gas mixture is up to 22 times greater than the ethane content. With the removal of only about 0.5 kg of the gas mixture, the methane content is only about three times as high as the ethane content. The methane content continues to drop, so that with a withdrawn gas mass of about 3 kg, the methane / ethane ratio is about 1: 1. Due to this curve, it is clear that the injection conditions for the internal combustion engine are continuously adapted to the current gas composition in the fuel tank.
- a gas amount ⁇ m is taken during a working cycle.
- the gas quantity ⁇ m to be taken is assumed to be known.
- the determination of ⁇ m is made from the intake air mass and the corresponding ⁇ value.
- the first gas withdrawal from the fuel tank is still pure methane gas.
- the tank pressure finally drops below the vapor pressure of ethane (about 38 bar). This evaporates just as much ethane until the vapor pressure is reached again.
- R-mix (methane-RMethane + ethane-ethane) / (methane-ethane)
- PEthan m Eth to * REthan * T / V
- V is the current tank volume
- the gas package ⁇ m taken next is composed of methane and ethane. It is based on an ideal mixing of the gas, so that the gas package ⁇ m can be calculated as follows:
- the calculation of the mixture composition proceeds iteratively and is recalculated each time a working cycle in which a gas mixture is taken and a certain amount of ethane evaporates.
- Vaporization of liquid ethane slightly increases the tank volume by exactly the amount ethane occupies in liquid form.
- the factor p is the
- the current tank volume V is again calculated per cycle. It turns out
- V V old + ⁇ V
- the alternative calculation method is physically equivalent to the aforementioned calculation method. However, it has the advantage that with this calculation method, the arithmetic unit can be displayed structurally simpler.
- this alternative calculation method the currently vaporous fractions of methane m methane and ethane m etha managed separately. The ratio X of the respective proportion to the total amount of steam is formed.
- the amount of gas ⁇ m blown in per working cycle is then composed as follows:
- m ü EAthan, a ik + t, ue ilil m ü E + tih, an, ult " ⁇ m ü E + tih, an + ⁇ m ethane, dilute vapor
- the gas pressure p is then greater than the vapor pressure p d .
- Ethane content is evaporated.
- the gas pressure p is smaller than the vapor pressure p d .
- the ethane content is determined in this case as follows:
- Tank volume is an important factor in the formula work mentioned above. Depending on how high the liquid content of gas components is, the value can vary.
- the volume is determined as follows. In the phase in which only methane is gaseous, a certain amount of Am, burned.
- the quantity ⁇ m.M, et, han is known to the arithmetic unit and can be calculated, for example, from the intake air quantity and the ⁇ number.
- the flow chart of Figure 4 shows a flow chart for the modeling of the tank contents.
- the gas pressure in the fuel tank or the temperature in the fuel tank is determined by means of the built-in sensors.
- the gas pressure or the gas temperature is then stored and temporarily stored.
- the vapor pressure is calculated according to the formula
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- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Analytical Chemistry (AREA)
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- General Physics & Mathematics (AREA)
- Food Science & Technology (AREA)
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/162,038 US8073636B2 (en) | 2006-05-12 | 2007-03-01 | Method and device for determining the composition of a gas mixture of a fuel tank of a motor vehicle filled with CNG |
CN2007800029690A CN101370681B (zh) | 2006-05-12 | 2007-03-01 | 用于获得以cng气体充填的汽车燃料箱的气体混合物的组分的方法和装置 |
EP07712410A EP1951539A1 (de) | 2006-05-12 | 2007-03-01 | Verfahren und vorrichtung zur ermittlung der zusammensetzung eines gasgemisches eines mit einem cng-gas befüllten kraftstofftanks eines kraftfahrzeugs |
JP2009501993A JP2009531683A (ja) | 2006-05-12 | 2007-03-01 | Cngガスが充填された自動車の燃料タンクの混合ガスの組成を求める方法および装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006022357A DE102006022357B3 (de) | 2006-05-12 | 2006-05-12 | Verfahren und Vorrichtung zur Ermittlung der Zusammensetzung eines Gasgemisches eines mit einem CNG-Gas befüllten Kraftstofftanks eines Kraftfahrzeugs |
DE102006022357.8 | 2006-05-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007131814A1 true WO2007131814A1 (de) | 2007-11-22 |
Family
ID=38017107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/051959 WO2007131814A1 (de) | 2006-05-12 | 2007-03-01 | Verfahren und vorrichtung zur ermittlung der zusammensetzung eines gasgemisches eines mit einem cng-gas befüllten kraftstofftanks eines kraftfahrzeugs |
Country Status (7)
Country | Link |
---|---|
US (1) | US8073636B2 (de) |
EP (1) | EP1951539A1 (de) |
JP (1) | JP2009531683A (de) |
KR (1) | KR100990554B1 (de) |
CN (1) | CN101370681B (de) |
DE (1) | DE102006022357B3 (de) |
WO (1) | WO2007131814A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114458458A (zh) * | 2022-03-10 | 2022-05-10 | 潍柴动力股份有限公司 | 一种发动机控制方法及装置 |
Families Citing this family (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007009546B4 (de) * | 2007-02-27 | 2008-12-04 | Continental Automotive Gmbh | Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine eines auf den Betrieb mit CNG-Gas umschaltbaren Kraftfahrzeugs |
JP4525728B2 (ja) * | 2007-10-24 | 2010-08-18 | トヨタ自動車株式会社 | ガス残量表示制御装置、ガス残量表示装置、および、ガス残量表示制御方法 |
DE102008001668A1 (de) * | 2008-05-08 | 2009-11-12 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Bestimmung der Zusammensetzung eines Kraftstoffgemischs |
KR101014519B1 (ko) * | 2008-11-24 | 2011-02-14 | 현대자동차주식회사 | 노킹 방지 엔진 제어 방법 |
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- 2007-03-01 KR KR1020087018164A patent/KR100990554B1/ko active IP Right Grant
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Also Published As
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KR20080085186A (ko) | 2008-09-23 |
DE102006022357B3 (de) | 2007-10-11 |
US20090088983A1 (en) | 2009-04-02 |
JP2009531683A (ja) | 2009-09-03 |
CN101370681B (zh) | 2012-06-27 |
KR100990554B1 (ko) | 2010-10-29 |
EP1951539A1 (de) | 2008-08-06 |
US8073636B2 (en) | 2011-12-06 |
CN101370681A (zh) | 2009-02-18 |
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