EP1136683A2 - Kraftstoffzumess-System für eine Brennkraftmaschine - Google Patents
Kraftstoffzumess-System für eine Brennkraftmaschine Download PDFInfo
- Publication number
- EP1136683A2 EP1136683A2 EP01106750A EP01106750A EP1136683A2 EP 1136683 A2 EP1136683 A2 EP 1136683A2 EP 01106750 A EP01106750 A EP 01106750A EP 01106750 A EP01106750 A EP 01106750A EP 1136683 A2 EP1136683 A2 EP 1136683A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- tank ventilation
- hot start
- lambda
- ventilation valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
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
- 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
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
-
- 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
- F02D41/003—Adding fuel vapours, e.g. drawn from engine fuel reservoir
- F02D41/0032—Controlling the purging of the canister as a function of the engine operating conditions
-
- 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
- F02D41/003—Adding fuel vapours, e.g. drawn from engine fuel reservoir
- F02D41/0032—Controlling the purging of the canister as a function of the engine operating conditions
- F02D41/0035—Controlling the purging of the canister as a function of the engine operating conditions to achieve a special effect, e.g. to warm up the catalyst
-
- 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
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
- F02D41/065—Introducing corrections for particular operating conditions for engine starting or warming up for starting at hot start or restart
-
- 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
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
Definitions
- the invention relates to a fuel metering system for an internal combustion engine according to the preamble of patent claim 1.
- a hot start of an internal combustion engine lies always before if the internal combustion engine after a long time Operation stopped under high load and after a short time Standstill is started again. The one in the internal combustion engine heat is then heated during this The fuel-carrying parts also come to a stop the intake tract. Fuel vapor bubbles that result can lead to such a start insufficient fuel supply to the internal combustion engine. As a result of the resulting extreme mixture thinning poor starting behavior results and at least until normal temperature conditions are restored have set insufficient engine running behavior.
- DE 42 24 893 A1 describes a method for Fuel metering for an internal combustion engine in connection described with a hot start. According to this procedure, where a base value for the fuel metering at least temporarily with one on the signal one Lambda probe based signal is superimposed Measures to compensate for hot start-related mixture disturbances initiated such that a change from The parameters of the lambda control are based on a mixture enrichment run out.
- a hot start is made by comparing the current one Temperature of the internal combustion engine or the intake air temperature with a predetermined normal temperature recognized.
- EP 0 191 170 B1 describes a device for venting fuel tanks in internal combustion engines with an activated carbon filter for temporary storage of the Fuel vapors and one depending on the signal one Lambda probe electrically controlled tank ventilation valve with continuously variable passage, whereby in addition to the lambda-dependent opening of the tank ventilation valve depending on a input tax map the opening of the tank ventilation valve at load and speed is determined.
- DE patent application 100 05 257.6 is a control for fuel metering an internal combustion engine with a device to detect a hot start by measuring the current electrical resistance of the opening device of the injectors described.
- DE 44 35 419 A1 is a control system for the fuel metering of an internal combustion engine is shown, by comparing the coolant temperature or the intake air temperature with a predetermined Threshold temperature a hot start is detected.
- the invention is based on the object To create fuel metering system, which according to a Hot start a safe start under all conditions and ensures good engine running, even if significant amounts of disruptive fuel vapor in the form of vapor bubbles are present in the fuel supply system, which only after a minimum running time of the internal combustion engine are rinsed out.
- the hot start and the hot start corrections are done normally.
- the hot start corrections are overlaid by opening the tank ventilation valve through pilot control according to a load and speed-dependent map. This will result in mixture deviations due to steam bubbles balanced in the fuel supply device.
- the quickly responding lambda control switched on by the from the tank ventilation map predefined pilot control of the tank ventilation valve overlay that one that is optimal for the combustion process Mixture is provided.
- the tank ventilation valve deliberately opened more or less closed and the mixture composition is corrected.
- the control of the tank ventilation valve can be done continuously or done clocked. Only when the Regulation of the mixture composition solely via the tank ventilation valve no longer leads to optimal values, is also transferred from the engine control to the fuel supply device Influenced to the air-fuel ratio Optimize lambda.
- This function is maintained as long as until the hot start conditions have ended. It can too after a predetermined runtime of the internal combustion engine or after reaching a predetermined driving speed be canceled with a vehicle drive. Also when it is recognized that predominantly liquid fuel is injected via the fuel supply device, the function can be canceled. The internal combustion engine then continues to work in the usual way and that Tank vent valve will operate according to its normal map regulated.
- An internal combustion engine 1 has an intake pipe 2 and an exhaust tract 3.
- an adjustable throttle valve 4 and one by means of an electronic control device 5
- Fuel supply device which can be influenced via a line 6 7.
- the throttle valve 4 can be operated via an accelerator pedal directly or indirectly with the interposition of the control device 5 operated by the driver.
- the fuel supply device 7, the z. B. by an electrically controllable Fuel injection valve to be formed can, fuel is made via a fuel line 8 fed to a tank 9.
- a tank ventilation line 10 in the course of which an adsorption filter 11 and a tank ventilation valve 12 are arranged.
- the tank vent valve 12 is via a line 13 by means of the electronic Passage of control device 5 can be changed. This can be done in a manner known per se by continuous Adjusting the passage or by timing timed opening and closing of the passage.
- the adsorption filter 11 is with a ventilation line 14 provided to the atmosphere.
- a lambda probe 15 is arranged in the exhaust tract 3, whose signal via a lambda probe line 16 is fed to the control device 5.
- the internal combustion engine 1 is one with itself known device for detecting a hot start equipped. Such a device is e.g. B. with the DE patent application 100 05 257.6. The existence The conditions of a hot start will be the control device 5 fed via lines 17.
- the flow chart according to FIG. 2 shows the special features the mode of operation of the fuel metering system according to the invention.
- the hot start detection device Checked whether the conditions for a hot start exist: Box 21. If it is recognized that there is a hot start, then is a control for a lambda control for optimal hot restart conditions made: box 22.
- the tank ventilation valve 12 actuated, causing fuel vapors get into the intake pipe 2 from the adsorption filter 11.
- the fuel-air mixture is influenced by corrected the tank ventilation valve map so that optimal hot restart conditions are maintained: box 24.
- the internal combustion engine 1 generally trouble-free even under hot start conditions start and run. This is also possible because because in hot start conditions a signal from the lambda probe 15 is available.
- Box 25 It is constantly checked whether there are still hot start conditions are available: Box 25. As long as this is the case the fuel is metered primarily via the Tank vent valve 12. There are no hot start conditions before, then from the control device 5 to a conventional lambda control by means of the fuel supply device 7 switched: Box 26. At the same time, there is a normal and normal map control of the tank ventilation valve 12 switched: box 27.
- the internal combustion engine can now be used in a conventional manner Operating mode with a lambda-controlled fuel metering essentially via the fuel supply device 7 continue to operate.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
Abstract
Description
- Fig. 1:
- ein Kraftstoffzumess-System einer Brennkraftmaschine eines Kraftfahrzeuges mit den für die Erfindung wesentlichen Komponenten in schematisierter Form;
- Fig. 2:
- ein Flussdiagramm der Arbeitsweise des Kraftstoffzumess-Systems, soweit diese von der Erfindung betroffen ist.
Claims (2)
- Kraftstoffzumess-System für eine Brennkraftmaschine mit einem Ansaugrohr, einer Kraftstoff-Zuführeinrichtung, einer elektronischen Steuereinrichtung, einer Lambda-Regelung des Gemisches über zumindest eine abgasseitige Lambda-Sonde und mit einem Tankentlüftungssystem, bei welchem aus einem Kraftstofftank entweichende Kraftstoffdämpfe in einem regenerierbaren Adsorptionsfilter aufgefangen werden, wobei zum Regenieren ein von einem Tankentlüftungsventil gesteuerter Luftstrom über die Adsorptionsmasse des Filters zum Ansaugrohr der Brennkraftmaschine geführt wird, wobei der Luftstrom in Abhängigkeit vom Signal der Lambda-Sonde veränderbar ist und ergänzend zur Lambda-abhängigen Öffnung des Tankentlüftungsventils über ein Vorsteuer-Kennfeld in Abhängigkeit zu Last und Drehzahl die Öffnung des Tankentlüftungsventils bestimmt ist, dadurch gekennzeichnet, dass die Brennkraftmaschine (1) mit einer Einrichtung zum Erkennen eines Heißstarts ausgerüstet ist und bei Vorliegen von Heißstartbedingungen die Lambda-Regelung auf das Öffnungsverhalten des Tankentlüftungsventils (12) derart einwirkt, dass sich ein für den Heißstart bzw. Heißnachstart optimales Kraftstoff-Luft-Verhältnis Lambda vorzugsweise durch eine Zumessung des Kraftstoffs durch das Tankentlüftungsventil (12) einstellt und die vorzugsweise Regelung über das Tankentlüftungsventil (12) aufrechterhalten wird, bis die Heißstartbedingungen beendet sind.
- Kraftstoffzumess-System nach Anspruch 1, dadurch gekennzeichnet, dass bei Vorliegen von Heißstartbedingungen die Lambda-Regelung vorzugsweise allein auf das Öffnungsverhalten des Tankentlüftungsventils (12) einwirkt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000114564 DE10014564A1 (de) | 2000-03-23 | 2000-03-23 | Kraftstoffzumess-System für eine Brennkraftmaschine |
DE10014564 | 2000-03-23 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1136683A2 true EP1136683A2 (de) | 2001-09-26 |
EP1136683A3 EP1136683A3 (de) | 2003-10-15 |
EP1136683B1 EP1136683B1 (de) | 2006-07-12 |
Family
ID=7636138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20010106750 Expired - Lifetime EP1136683B1 (de) | 2000-03-23 | 2001-03-17 | Kraftstoffzumess-System für eine Brennkraftmaschine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1136683B1 (de) |
DE (2) | DE10014564A1 (de) |
ES (1) | ES2267618T3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1744038A1 (de) * | 2005-07-14 | 2007-01-17 | Ford Global Technologies, LLC | Vorrichtung und Verfahren zur Kraftstoffdampfversorgung beim Start einer Brennkraftmaschine |
CN116430390A (zh) * | 2023-06-13 | 2023-07-14 | 南京信息工程大学 | 一种面向资料同化的s波段双偏振雷达质量控制方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7150271B2 (en) * | 2004-12-20 | 2006-12-19 | General Motors Corporation | Vapor assisted cold start control algorithm |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0191170B1 (de) | 1985-01-26 | 1989-03-29 | Robert Bosch Gmbh | Vorrichtung zur Entlüftung von Kraftstofftanks |
DE4224893A1 (de) | 1992-07-28 | 1994-02-03 | Bosch Gmbh Robert | Verfahren zur Kraftstoffzumessung für eine Brennkraftmaschine in Verbindung mit einem Heißstart |
DE4435419A1 (de) | 1994-10-04 | 1996-04-11 | Bosch Gmbh Robert | Steuersystem für die Kraftstoffzumessung einer Brennkraftmaschine |
DE10005257A1 (de) | 2000-02-05 | 2001-08-09 | Opel Adam Ag | Steuerung für die Kraftstoffzumessung einer Brennkraftmaschine |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5007988A (en) * | 1987-09-08 | 1991-04-16 | Westinghouse Electric Corp. | Method for determining the concentration of a plurality of combustible gases in a stream |
DE3813220C2 (de) * | 1988-04-20 | 1997-03-20 | Bosch Gmbh Robert | Verfahren und Einrichtung zum Stellen eines Tankentlüftungsventiles |
JPH02243957A (ja) * | 1988-08-22 | 1990-09-28 | Us Government | 無回転シール型流通式コイルプラネット遠心管装置 |
JP2935249B2 (ja) * | 1991-05-31 | 1999-08-16 | 本田技研工業株式会社 | 内燃エンジンの始動燃料制御装置 |
JP2841005B2 (ja) * | 1993-02-01 | 1998-12-24 | 本田技研工業株式会社 | 内燃機関の蒸発燃料処理制御装置 |
DE4319772A1 (de) * | 1993-06-15 | 1994-12-22 | Bosch Gmbh Robert | Verfahren und Vorrichtung zum Steuern einer Tankentlüftungsanlage |
KR100364568B1 (ko) * | 1994-03-30 | 2003-03-03 | 마츠다 가부시키가이샤 | 증발연료량추정장치및이장치를구비한엔진의제어장치 |
JPH08200166A (ja) * | 1995-01-25 | 1996-08-06 | Toyota Motor Corp | 空燃比制御装置 |
DE19701353C1 (de) * | 1997-01-16 | 1998-03-12 | Siemens Ag | Verfahren zur Tankentlüftung bei einer Brennkraftmaschine |
-
2000
- 2000-03-23 DE DE2000114564 patent/DE10014564A1/de not_active Withdrawn
-
2001
- 2001-03-17 EP EP20010106750 patent/EP1136683B1/de not_active Expired - Lifetime
- 2001-03-17 ES ES01106750T patent/ES2267618T3/es not_active Expired - Lifetime
- 2001-03-17 DE DE50110426T patent/DE50110426D1/de not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0191170B1 (de) | 1985-01-26 | 1989-03-29 | Robert Bosch Gmbh | Vorrichtung zur Entlüftung von Kraftstofftanks |
DE4224893A1 (de) | 1992-07-28 | 1994-02-03 | Bosch Gmbh Robert | Verfahren zur Kraftstoffzumessung für eine Brennkraftmaschine in Verbindung mit einem Heißstart |
DE4435419A1 (de) | 1994-10-04 | 1996-04-11 | Bosch Gmbh Robert | Steuersystem für die Kraftstoffzumessung einer Brennkraftmaschine |
DE10005257A1 (de) | 2000-02-05 | 2001-08-09 | Opel Adam Ag | Steuerung für die Kraftstoffzumessung einer Brennkraftmaschine |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1744038A1 (de) * | 2005-07-14 | 2007-01-17 | Ford Global Technologies, LLC | Vorrichtung und Verfahren zur Kraftstoffdampfversorgung beim Start einer Brennkraftmaschine |
CN116430390A (zh) * | 2023-06-13 | 2023-07-14 | 南京信息工程大学 | 一种面向资料同化的s波段双偏振雷达质量控制方法 |
CN116430390B (zh) * | 2023-06-13 | 2023-08-22 | 南京信息工程大学 | 一种面向资料同化的s波段双偏振雷达质量控制方法 |
Also Published As
Publication number | Publication date |
---|---|
DE50110426D1 (de) | 2006-08-24 |
DE10014564A1 (de) | 2001-09-27 |
EP1136683B1 (de) | 2006-07-12 |
EP1136683A3 (de) | 2003-10-15 |
ES2267618T3 (es) | 2007-03-16 |
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