WO2001050001A2 - Verfahren zum warmlaufen einer brennkraftmaschine - Google Patents
Verfahren zum warmlaufen einer brennkraftmaschine Download PDFInfo
- Publication number
- WO2001050001A2 WO2001050001A2 PCT/DE2000/004276 DE0004276W WO0150001A2 WO 2001050001 A2 WO2001050001 A2 WO 2001050001A2 DE 0004276 W DE0004276 W DE 0004276W WO 0150001 A2 WO0150001 A2 WO 0150001A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- factor
- internal combustion
- combustion engine
- load
- warm
- Prior art date
Links
Classifications
-
- 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
Definitions
- the invention relates to a method for warming up an internal combustion engine, in particular a motor vehicle, in which fuel is injected into an intake pipe or into a combustion chamber, and in which a warm-up factor for increasing the injected fuel quantity is determined below an operating temperature of the internal combustion engine.
- the invention also relates to a corresponding internal combustion engine and a corresponding control device for such an internal combustion engine.
- Such a method such an internal combustion engine and such a control device are known, for example, from a so-called intake manifold injection. There, fuel is injected into the intake pipe of the internal combustion engine in a homogeneous operation during the intake phase, in order to then be drawn into the combustion chamber of the internal combustion engine.
- the fuel is injected directly into the combustion chamber during the intake phase or during the compression phase and burned there.
- the known determination of the warm-up factor is based on manifold injections and is therefore not flexible.
- the known determination of the warm-up factor can only be used to a limited extent for direct-injection internal combustion engines.
- the object of the invention is to provide a method for warming up an internal combustion engine, with which greater flexibility and, in particular, simplified application with improved warm-up behavior of the internal combustion engine can be achieved.
- this object is achieved in that the warm-up factor is determined from a basic factor and a load-dependent factor. In the case of an internal combustion engine and a control device of the type mentioned at the outset, the object is achieved accordingly.
- the last-mentioned factor can be determined for different operating modes independently of the basic factor. This makes it easy to use the determination of the warm-up factor according to the invention in direct-injection internal combustion engines.
- the separation according to the invention also makes it possible to apply the basic factor and the load-dependent factor independently of one another. The same also applies to the determination of the load-dependent factor in the different operating modes of a direct-injection internal combustion engine.
- the invention can also be used without difficulty in intake manifold injections. Above all, the independent application of the basic factor and the load-dependent factor has an advantageous effect.
- the load-dependent factor is dependent on an integrated one
- Air mass and / or an integrated fuel mass and / or an engine temperature of the internal combustion engine is determined and / or the load-dependent factor is dependent on a relative air filling and / or a relative fuel quantity and / or an actual or target lambda and / or an actual - Determined or target torque of the internal combustion engine.
- the basic factor is determined as a function of the engine temperature. This represents a particularly simple but nevertheless sufficient possibility for determining the basic factor.
- the load-dependent factor and the basic factor are additively linked to one another.
- the factors determined independently of one another according to the invention are thus combined again to form the warm-up factor.
- the load-dependent factor or the sum of the load-dependent factor and the basic factor is weighted as a function of the speed of the internal combustion engine.
- the weighting affects either the load-dependent factor alone or the sum of the load-dependent factor and the basic factor. This makes it possible, depending on the type of internal combustion engine, to make corresponding adjustments with regard to the speed weighting.
- control element which is provided for a control device of an internal combustion engine, in particular a motor vehicle.
- a program is stored on the control element, which is executable on a computing device, in particular on a microprocessor, and
- the invention is therefore implemented by a program stored on the control element, so that this control element provided with the program represents the invention in the same way as the method, for the execution of which the program is suitable.
- an electrical storage medium can be used, for example a read-only memory or a flash memory.
- Figure 1 shows a schematic block diagram of an embodiment of an internal combustion engine according to the invention.
- FIG. 2 shows a schematic flow diagram of a method according to the invention for warming up the internal combustion engine of FIG. 1.
- FIG. 1 shows an internal combustion engine 1 of a motor vehicle in which a piston 2 can be moved back and forth in a cylinder 3.
- the cylinder 3 is provided with a combustion chamber 4 which is delimited inter alia by the piston 2, an inlet valve 5 and an outlet valve 6.
- An intake pipe 7 is coupled to the inlet valve 5 and an exhaust pipe 8 is coupled to the exhaust valve 6.
- Combustion chamber 4 Fuel can be injected via the injection valve 9 the combustion chamber 4 are injected. The fuel in the combustion chamber 4 can be ignited with the spark plug 10.
- a rotatable throttle valve 11 is accommodated, via which air can be fed to the intake pipe 7.
- the amount of air supplied is dependent on the angular position of the throttle valve 11.
- a catalytic converter 12 is accommodated in the exhaust pipe 8, which serves to clean the exhaust gases resulting from the combustion of the fuel.
- An exhaust gas recirculation pipe 13 leads from the exhaust pipe 8 back to the intake pipe 7.
- An exhaust gas recirculation valve 14 is accommodated in the exhaust gas recirculation pipe 13, with which the amount of exhaust gas recirculated into the intake pipe 7 can be adjusted.
- the exhaust gas recirculation pipe 13 and the exhaust gas recirculation valve 14 form a so-called exhaust gas recirculation.
- Tank ventilation line 16 to the intake pipe 7.
- a tank ventilation valve 17 is accommodated in the tank ventilation line 16, with which the amount of fuel vapor supplied to the intake pipe 7 from the fuel tank 15 can be adjusted.
- the tank ventilation line 16 and the tank ventilation valve 17 form a so-called tank ventilation.
- the combustion of the fuel in the combustion chamber 4 causes the piston 2 to move back and forth, which is transmitted to a crankshaft (not shown) and exerts a torque thereon.
- a control unit 18 is acted upon by input signals 19, which represent operating variables of the internal combustion engine 1 measured by sensors.
- Control unit 18 connected to an air mass sensor, a lambda sensor, a speed sensor and the like.
- the control unit 18 is connected to an accelerator pedal sensor which generates a signal which indicates the position of an accelerator pedal which can be actuated by a driver and thus the requested torque.
- the control unit 18 generates output signals 20 with which the behavior of the internal combustion engine 1 can be influenced via actuators or actuators.
- the control unit 18 is connected to the injection valve 9, the spark plug 10 and the throttle valve 11 and the like and generates the signals required to control them.
- control unit 18 is provided to control and / or regulate the operating variables of the internal combustion engine 1.
- the fuel mass injected into the combustion chamber 4 by the injection valve 9 is controlled and / or regulated by the control unit 18, in particular with regard to low fuel consumption and / or low pollutant development.
- the control unit 18 is provided with a microprocessor, which has stored a program in a storage medium, in particular in a flash memory, which is suitable for carrying out the control and / or regulation mentioned.
- the internal combustion engine 1 of FIG. 1 can be operated in a plurality of operating modes. It is thus possible to operate the internal combustion engine 1 in a homogeneous operation, a stratified operation, a homogeneous lean operation, an operation with double injection and the like.
- the fuel is injected from the injection valve 9 directly into the combustion chamber 4 of the internal combustion engine 1 during the intake phase. This means that the fuel is largely used until the ignition swirls so that an essentially homogeneous fuel / air mixture is formed in the combustion chamber 4.
- the torque to be generated is essentially set by the control unit 18 via the position of the throttle valve 11.
- the operating variables of internal combustion engine 1 are controlled and / or regulated in such a way that lambda is equal to one. Homogeneous operation is used particularly at full load.
- the homogeneous lean operation largely corresponds to that
- the lambda is set to a value greater than one.
- the fuel is injected from the injection valve 9 directly into the combustion chamber 4 of the internal combustion engine 1 during the compression phase.
- the throttle valve 11 apart from requirements e.g. the exhaust gas recirculation and / or the tank ventilation, fully opened and the internal combustion engine 1 operated with it dethrottled.
- the torque to be generated is largely set via the fuel mass in shift operation.
- the internal combustion engine 1 can be operated, in particular, when idling and at partial load.
- the internal combustion engine 1 is started at a temperature that is below an operating temperature of the internal combustion engine 1, the internal combustion engine 1 is started, for example at low outside temperatures, after a long standstill, then the one injected into the combustion chamber 4 Fuel quantity increased. In this way, not only is an ignitable air / fuel mixture made available in the combustion chamber 4, but also those losses in fuel are compensated for by the introduction of fuel into the engine oil and / or by building a wall film of fuel in the Combustion chamber 4 arise.
- the internal combustion engine 1 is heated by each combustion, so that the increase in the amount of fuel can be slowly reduced. If the operating temperature of the internal combustion engine 1 is reached, the amount of fuel injected is no longer increased, at least insofar.
- the increase in the amount of fuel injected when the internal combustion engine 1 starts cold and its slow withdrawal is carried out by the control unit 18 with the aid of a warm-up factor fWL.
- This warm-up factor fWL can also be multiplicatively linked with a so-called post-start factor in order to then influence the fuel quantity to be injected into the combustion chamber 4.
- FIG. 2 shows the determination of the warm-up factor fWL.
- the warm-up factor fWL is determined from a basic factor fG and a load-dependent factor fLA. A distinction is therefore made between a factor that essentially only affects idling, the basic factor fG, and a factor that only occurs under load, the load-dependent factor fLA.
- the basic factor fG and the load-dependent factor fLA are therefore independent of one another and can be applied separately.
- the basic factor fG is determined by means of an idling map 10, to which an engine start temperature TMS and an engine temperature TM are input.
- Idling map 10 becomes the basic factor fG set that there is a desired lambda curve for idling or with a small applied load.
- the engine starting temperature TMS is the temperature of the internal combustion engine 1 that it has when starting. This differentiates between different starting strategies for a restart when the outside temperature is cold and a restart when the engine is warm but not warm.
- the motor temperature TM is the current one
- the load dependence of the factor fLA is achieved by the relative air filling rl in the combustion chamber 4. It goes without saying that instead of the relative air filling rl there can also be a relative amount of fuel and / or an actual or target lambda and / or an actual or target torque or the like.
- the engine start temperature TMS is also linked to an integrated air mass li via a map 12. As a result, the value obtained from the characteristic diagram 11 is reduced as the internal combustion engine 1 heats up.
- the integrated air mass mli is a measure of the energy converted in the combustion chamber 4, which in turn results in an increase in the temperature of the internal combustion engine 1 via the associated burns. It goes without saying that instead of the integrated air mass mli, an integrated fuel mass and / or in the simplest case the engine temperature TM can also be used.
- the initial values of the two maps 11, 12 are multiplicatively linked with each other, from which the load-dependent factor fLA arises.
- the load-dependent factor fLA is additively linked to the basic factor fG, from which the warm-up factor fWL arises.
- a speed weighting fn during warm-up enrichment of the internal combustion engine 1 is determined via a characteristic curve 13.
- a characteristic diagram can also be provided which, in addition to the speed dependency, is also dependent on a temperature or the relative air mass or the relative fuel mass.
- this speed weighting fn can act directly on the load-dependent factor fLA via an ultimate link.
- the speed weighting fn has a multiplicative effect only on the sum of the load-dependent factor fLA and the basic factor fG, as is shown in broken lines in FIG.
- the warm-up factor fWL is determined in the case of a direct-injection internal combustion engine 1 in the manner described above as a function of the operating mode of the internal combustion engine 1. This means that the characteristic maps 10, 11, 12 or the characteristic curve 13 of FIG. 2 are available for each of the operating modes of the internal combustion engine 1, that is to say in particular for the stratified operation and the homogeneous operation. If the internal combustion engine 1 is switched over between the different operating modes during warming up, a switchover also takes place with regard to the determination of the warming up factor fWL.
- the engine temperature TM approaches the operating temperature of the
- the warm-up factor fWL described with reference to FIG. 2 - deviating from FIG. 1 - is used in internal combustion engines with intake manifold injection, the characteristic diagrams 10, 11, 12 and the characteristic curve 13 of FIG. 2 are only available once, for homogeneous operation. There is no switching between operating modes.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00988674A EP1247015B1 (de) | 1999-12-31 | 2000-12-01 | Verfahren zum warmlaufen einer brennkraftmaschine |
JP2001549913A JP4700248B2 (ja) | 1999-12-31 | 2000-12-01 | 内燃機関の暖機運転のための方法、自動車の内燃機関の制御装置のための制御エレメント、自動車の内燃機関、並びに自動車の内燃機関のための制御装置 |
DE50015881T DE50015881D1 (de) | 1999-12-31 | 2000-12-01 | Verfahren zum warmlaufen einer brennkraftmaschine |
US10/168,564 US6766790B2 (en) | 1999-12-31 | 2000-12-01 | Method for warming-up an internal combustion engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19963931A DE19963931A1 (de) | 1999-12-31 | 1999-12-31 | Verfahren zum Warmlaufen einer Brennkraftmaschine |
DE19963931.0 | 1999-12-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001050001A2 true WO2001050001A2 (de) | 2001-07-12 |
WO2001050001A3 WO2001050001A3 (de) | 2001-12-27 |
Family
ID=7935097
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2000/004276 WO2001050001A2 (de) | 1999-12-31 | 2000-12-01 | Verfahren zum warmlaufen einer brennkraftmaschine |
Country Status (7)
Country | Link |
---|---|
US (1) | US6766790B2 (de) |
EP (1) | EP1247015B1 (de) |
JP (1) | JP4700248B2 (de) |
DE (2) | DE19963931A1 (de) |
ES (1) | ES2340758T3 (de) |
RU (1) | RU2256087C2 (de) |
WO (1) | WO2001050001A2 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10307004B3 (de) * | 2003-02-19 | 2004-08-05 | Siemens Ag | Verfahren zur Steuerung einer Brennkraftmaschine mit einer Lambda-Regelung |
JP4123161B2 (ja) * | 2004-02-12 | 2008-07-23 | トヨタ自動車株式会社 | エンジンの燃料噴射制御装置 |
US20050256797A1 (en) * | 2004-05-13 | 2005-11-17 | Scottrade, Inc. | Method and apparatus for user-interactive financial instrument trading |
DE102006033933A1 (de) * | 2006-07-21 | 2008-01-24 | Robert Bosch Gmbh | Verfahren zur automatischen Ermittlung der Güte einer Übergangskompensation |
DE102007058227B4 (de) * | 2007-12-04 | 2019-01-31 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine und Steuer- oder Regeleinrichtung für eine Brennkraftmaschine |
Citations (7)
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US4440136A (en) * | 1980-11-08 | 1984-04-03 | Robert Bosch Gmbh | Electronically controlled fuel metering system for an internal combustion engine |
US4543937A (en) * | 1983-03-15 | 1985-10-01 | Toyota Jidosha Kabushiki Kaisha | Method and apparatus for controlling fuel injection rate in internal combustion engine |
US4711217A (en) * | 1985-03-18 | 1987-12-08 | Honda Giken Kogyo Kabushiki Kaisha | Fuel supply control method for internal combustion engines at low temperature |
US5564406A (en) * | 1995-01-19 | 1996-10-15 | Robert Bosch Gmbh | Method for adapting warm-up enrichment |
WO1998001659A1 (en) * | 1996-07-10 | 1998-01-15 | Orbital Engine Company (Australia) Pty. Limited | Engine warm-up offsets |
EP0831227A2 (de) * | 1996-08-26 | 1998-03-25 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Direkt-Einspritzungssteuergerät einer funkgezündeten Brennkraftmaschine |
EP0919711A2 (de) * | 1997-11-26 | 1999-06-02 | Mazda Motor Corporation | Steuersystem für eine funkgezündete Brennkraftmaschine mit Direkt-Eispritzung |
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JPS59168230A (ja) * | 1983-03-15 | 1984-09-21 | Toyota Motor Corp | 内燃機関の燃料噴射量制御方法および燃料噴射制御装置 |
JPH0742882B2 (ja) * | 1985-12-27 | 1995-05-15 | 日本電装株式会社 | 内燃機関の燃料供給量制御装置 |
JP2707674B2 (ja) * | 1989-01-20 | 1998-02-04 | 株式会社デンソー | 空燃比制御方法 |
US5471836A (en) * | 1991-10-14 | 1995-12-05 | Toyota Jidosha Kabushiki Kaisha | Exhaust purification device of internal combustion engine |
JPH0771304A (ja) * | 1993-06-29 | 1995-03-14 | Toyota Motor Corp | 内燃機関の制御装置 |
US5441030A (en) * | 1994-02-01 | 1995-08-15 | Satsukawa; Ryuji | Fuel injection system for two-stroke cycle engine |
JP3206357B2 (ja) * | 1994-04-19 | 2001-09-10 | トヨタ自動車株式会社 | 内燃機関の燃料噴射量制御装置 |
DE19625928A1 (de) * | 1996-06-28 | 1998-01-08 | Bosch Gmbh Robert | Verfahren zur Einstellung einer Kraftstoffmehrmenge in der Warmlaufphase einer Brennkraftmaschine |
JP3072716B2 (ja) * | 1996-08-27 | 2000-08-07 | 三菱自動車工業株式会社 | 内燃エンジンの燃料制御装置 |
DE19646941A1 (de) * | 1996-11-13 | 1998-05-14 | Bayerische Motoren Werke Ag | Verfahren zum Regeln des Luft-Kraftstoff-Verhältnisses eines Verbrennungsmotors nach dem Start |
JP3424557B2 (ja) * | 1997-08-06 | 2003-07-07 | マツダ株式会社 | エンジンの排気浄化装置 |
DE19753873B4 (de) * | 1997-12-05 | 2008-05-29 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine |
JP4416847B2 (ja) * | 1998-03-23 | 2010-02-17 | 株式会社デンソー | 内燃機関の燃料噴射制御装置 |
JP3521790B2 (ja) * | 1998-03-25 | 2004-04-19 | 株式会社デンソー | 内燃機関の制御装置 |
JP2000154744A (ja) * | 1998-11-16 | 2000-06-06 | Toyota Motor Corp | 内燃機関の燃料噴射量制御装置 |
JP3731403B2 (ja) * | 1999-09-09 | 2006-01-05 | 日産自動車株式会社 | 直噴火花点火式内燃機関の制御装置 |
JP3826642B2 (ja) * | 1999-11-08 | 2006-09-27 | トヨタ自動車株式会社 | 内燃機関の排気昇温装置 |
-
1999
- 1999-12-31 DE DE19963931A patent/DE19963931A1/de not_active Ceased
-
2000
- 2000-12-01 US US10/168,564 patent/US6766790B2/en not_active Expired - Lifetime
- 2000-12-01 WO PCT/DE2000/004276 patent/WO2001050001A2/de active Application Filing
- 2000-12-01 RU RU2002120474/06A patent/RU2256087C2/ru not_active IP Right Cessation
- 2000-12-01 JP JP2001549913A patent/JP4700248B2/ja not_active Expired - Fee Related
- 2000-12-01 DE DE50015881T patent/DE50015881D1/de not_active Expired - Lifetime
- 2000-12-01 EP EP00988674A patent/EP1247015B1/de not_active Expired - Lifetime
- 2000-12-01 ES ES00988674T patent/ES2340758T3/es not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4440136A (en) * | 1980-11-08 | 1984-04-03 | Robert Bosch Gmbh | Electronically controlled fuel metering system for an internal combustion engine |
US4543937A (en) * | 1983-03-15 | 1985-10-01 | Toyota Jidosha Kabushiki Kaisha | Method and apparatus for controlling fuel injection rate in internal combustion engine |
US4711217A (en) * | 1985-03-18 | 1987-12-08 | Honda Giken Kogyo Kabushiki Kaisha | Fuel supply control method for internal combustion engines at low temperature |
US5564406A (en) * | 1995-01-19 | 1996-10-15 | Robert Bosch Gmbh | Method for adapting warm-up enrichment |
WO1998001659A1 (en) * | 1996-07-10 | 1998-01-15 | Orbital Engine Company (Australia) Pty. Limited | Engine warm-up offsets |
EP0831227A2 (de) * | 1996-08-26 | 1998-03-25 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Direkt-Einspritzungssteuergerät einer funkgezündeten Brennkraftmaschine |
EP0919711A2 (de) * | 1997-11-26 | 1999-06-02 | Mazda Motor Corporation | Steuersystem für eine funkgezündete Brennkraftmaschine mit Direkt-Eispritzung |
Also Published As
Publication number | Publication date |
---|---|
US6766790B2 (en) | 2004-07-27 |
US20030056774A1 (en) | 2003-03-27 |
JP4700248B2 (ja) | 2011-06-15 |
DE50015881D1 (de) | 2010-04-15 |
DE19963931A1 (de) | 2001-07-12 |
EP1247015A2 (de) | 2002-10-09 |
RU2002120474A (ru) | 2004-01-20 |
WO2001050001A3 (de) | 2001-12-27 |
JP2003519330A (ja) | 2003-06-17 |
EP1247015B1 (de) | 2010-03-03 |
RU2256087C2 (ru) | 2005-07-10 |
ES2340758T3 (es) | 2010-06-09 |
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