WO2009130098A1 - Verfahren und vorrichtung zum steuern einer brennkraftmaschine mit stopp-start-automatik - Google Patents
Verfahren und vorrichtung zum steuern einer brennkraftmaschine mit stopp-start-automatik Download PDFInfo
- Publication number
- WO2009130098A1 WO2009130098A1 PCT/EP2009/053323 EP2009053323W WO2009130098A1 WO 2009130098 A1 WO2009130098 A1 WO 2009130098A1 EP 2009053323 W EP2009053323 W EP 2009053323W WO 2009130098 A1 WO2009130098 A1 WO 2009130098A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- internal combustion
- combustion engine
- stop
- size
- engine
- 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
- F02D41/068—Introducing corrections for particular operating conditions for engine starting or warming up for warming-up
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
- F02N11/0818—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
- F02N11/0829—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode related to special engine control, e.g. giving priority to engine warming-up or learning
-
- 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
- Y02T10/40—Engine management systems
Definitions
- the invention relates to a method and apparatus for controlling an internal combustion engine with a stop-start system, by means of which the internal combustion engine can be switched off and started independently of a motor vehicle driver.
- the shutdown of the internal combustion engine by the stop-start automatic is subject to restrictions.
- the shutdown of the internal combustion engine can be prevented if safety aspects (for example, the maintenance of a sufficient brake pressure) or too low a battery voltage requires further operation of the internal combustion engine.
- safety aspects for example, the maintenance of a sufficient brake pressure
- too low a battery voltage requires further operation of the internal combustion engine.
- it is known to stop the shutdown of the internal combustion engine by the stop-start automatic until reaching a certain operating temperature. so as not to slow down the warm-up process.
- the output signal of the coolant temperature sensor is used as a proviso for the temperature of the internal combustion engine.
- the actual temperature of the internal combustion engine is represented insufficiently accurately by the coolant temperature in certain configurations and / or operating conditions.
- the internal combustion engine may have a heater, which heats the coolant to significantly higher temperatures, such as the actual engine block.
- this method assumes the presence of a fully functional coolant temperature sensor, so that this procedure can not be applied in the absence or failure of the coolant temperature sensor or malfunction may occur.
- the method according to claim 1 is suitable for controlling an internal combustion engine for a motor vehicle with a stop-start system, which shuts down and starts the engine independently of the motor vehicle driver. According to the method, a start of the internal combustion engine is detected and a variable is determined, which is a measure of the of the
- Internal combustion engine represents work done since the start.
- the shutdown of the internal combustion engine by the automatic stop-start system is carried out as a function of the determined size.
- the invention is based on the idea that the work done by the internal combustion engine and thus the heat input caused by the engine combustion into the engine Block is decisive for the temperature of the internal combustion engine. Between the size, which is representative of the work done by the internal combustion engine since its last start and the temperature of the internal combustion engine, there is therefore a direct connection. By determining this size, therefore, a conclusion can be drawn on the temperature of the internal combustion engine. According to the invention, the shutdown of the internal combustion engine is now carried out by the stop-start system as a function of this variable. Switching off the internal combustion engine by the automatic stop-start system can therefore be prevented or prevented as a function of this size.
- the method according to the invention functions independently of a coolant temperature sensor and is therefore also suitable for configurations which either have no coolant temperature sensor or this sensor is defective. Since the size represents the work performed by the internal combustion engine and thus indirectly the heat input into the engine block, an estimate of the actual temperature of the internal combustion engine or the engine block in dependence of this size with higher accuracy is possible. Malfunctions, as they occur, for example, in a defective coolant temperature sensor can be avoided.
- the size is the amount of fuel, which has been attributed to the internal combustion engine since the last start.
- the size is the amount of fresh air, which the
- the torque produced by the internal combustion engine is determined, wherein the size is the time integral of the torque produced by the internal combustion engine since the start.
- the shutdown of the internal combustion engine by the stop-start automatic only takes place when the size exceeds a predetermined threshold lenwert. Otherwise, a shutdown of the internal combustion engine is stopped by the automatic stop-start system.
- the threshold value is determined as a function of the temperature of a coolant of the internal combustion engine before starting, of the stop time of the internal combustion engine before starting or of the ambient temperature of the motor vehicle before starting.
- the embodiments of the method according to the claims 5 to 8 ensures that a shutdown of the internal combustion engine by the stop-start automatic only takes place when the size (which is representative of the done by the internal combustion engine since the start of work and thus for the heat input into the internal combustion engine due to the engine combustion) has exceeded a certain predetermined threshold.
- the automatic stop-start system only becomes active when the internal combustion engine has reached a desired operating temperature, thereby ensuring that the internal combustion engine warms up as quickly as possible.
- the efficiency and the emission behavior of the internal combustion engine can be improved, in particular after a cold start.
- the heat input to the engine block required to reach the desired operating temperature varies depending on the temperature of the engine at the time of starting.
- This temperature can be easily determined by the temperature of the coolant, the stop time of the internal combustion engine, as well as by the environment. be estimated temperature of the motor vehicle before take-off. Since the threshold value is determined as a function of these variables, higher accuracy and greater flexibility result in the determination of this threshold value. Thereby, the time period after the start, during which the shutdown of the internal combustion engine is stopped by the stop-start system, be kept as short as possible depending on the existing environmental conditions.
- a control device is suitable for an internal combustion engine of a motor vehicle with a stop-start system, which switches off and starts the engine independently of a motor vehicle driver.
- the control device is designed such that it can carry out the method according to claim 1.
- corresponding control functions are implemented by software in the control device.
- Figure 1 is a schematic representation of an internal combustion engine
- FIG. 2 shows an exemplary embodiment of a control method in FIG
- the internal combustion engine 1 comprises at least one cylinder 2 and a piston 3 which can be moved up and down in the cylinder 2.
- the internal combustion engine 1 further comprises an intake tract in which a suction port 4 downstream of the intake port 4 is aspirated Fresh air, an air mass sensor 5, a throttle valve 6, and a suction pipe 7 are arranged.
- the intake opens into a limited by the cylinder 2 and the piston 3 combustion chamber 30. The necessary for combustion fresh air is introduced via the intake into the combustion chamber 30, wherein the
- Fresh air supply is controlled by opening and closing an intake valve 8.
- the internal combustion engine 1 shown here is an internal combustion engine 1 with direct fuel injection, in which the fuel required for the combustion is injected directly into the combustion chamber 30 via an injection valve 9.
- the combustion exhaust gases are discharged via an exhaust valve 11 in an exhaust gas tract of the internal combustion engine 1 and cleaned by means of a arranged in the exhaust gas catalytic converter 12.
- a lambda probe 16 is also arranged.
- the internal combustion engine 1 further has a speed sensor 15 for detecting the rotational speed of the crankshaft 13, a Coolant temperature sensor 14, an ambient temperature sensor 31 and an electric starter device 32 for starting the internal combustion engine.
- the internal combustion engine 1 has a fuel supply system which has a fuel tank 17 and a fuel pump 18 arranged therein.
- the fuel is supplied by means of the fuel pump 18 via a supply line 19 to a pressure accumulator 20.
- This is a common pressure accumulator 20, from which the injection valves 9 for a plurality of cylinders 2 are supplied with pressurized fuel.
- a fuel filter 21 and a high-pressure pump 22 are further arranged.
- the high-pressure pump 22 serves to prevent the fuel pump 18 from being pressed by the fuel pump 18 at a relatively low pressure (approx bar) conveyed fuel to the pressure accumulator 20 at high pressure (typically up to 150 bar).
- the internal combustion engine 1 is assigned a control device 26, which is connected via signal and data lines with all actuators and sensors of the internal combustion engine 1.
- code-based engine control functions KF1 to KF5 are implemented by software.
- a so-called automatic stop-start system 33 is implemented in the control device, which switches off and starts the internal combustion engine 1 independently of a motor vehicle driver (not shown). Based on the measured values of the sensors and the characteristic-based engine control functions, control signals are sent to the actuators of the internal combustion engine 1 and of the fuel supply system.
- the controller 26 is provided with data and signal lines including the fuel pump 18, the air mass sensor 5, the throttle valve 6, the spark plug 10, the injector 9, the coolant temperature sensor 14, the speed sensor 15, the lambda sensor 16, the ambient temperature sensor 31, and the Starter device 32 coupled.
- FIG. 2 shows an exemplary embodiment of a control method for the internal combustion engine 1 described in FIG. 1 in the form of a flowchart. The procedure is with
- Step 200 is started, for example when the internal combustion engine 1 is put into operation for the first time.
- Step 200 is started, for example when the internal combustion engine 1 is put into operation for the first time.
- the method is explained starting from a start of the internal combustion engine 1 in step 201.
- the start of the internal combustion engine can be done by the motor vehicle driver or by the automatic stop-start.
- step 202 the stop time is determined, which from the last shutdown to the start of the internal combustion engine. 1 in step 201 has passed. This can be done, for example, by means of a timer implemented in the control device 26. Furthermore, in step 202, the coolant temperature and the ambient temperature of the internal combustion engine 1 are determined. The determination of these variables (shut-off time, coolant temperature, ambient temperature) is advantageously carried out immediately after the detection of a request signal for the start of the internal combustion engine 1.
- a quantity is determined which is representative of the work that has been performed by the internal combustion engine 1 since the last start (step 201). This variable is determined continuously from the start of the internal combustion engine 1.
- the size may be, for example, the amount of fresh air which has been supplied to the internal combustion engine since the last start. The amount of fresh air is detected by the air quantity sensor 5 and summed up by a corresponding computing function in the control device 26. Alternatively, the size may be the amount
- Acting fuel which is the internal combustion engine 1 is metered since the last start (step 201).
- the metered amount of fuel can be determined, for example, by means of an arithmetic function implemented in the control device 26 as a function of the fuel pressure in the pressure accumulator 20 and the opening times of the injection valves 9.
- the quantity may be the time integral of the torque produced by the internal combustion engine 1 since the last start (step 201).
- the torque produced can either by means of a torque sensor
- the size represents a measure of the work done by the internal combustion engine since the last start, it is also representative of the heat of combustion released thereby, which leads to a heating of the engine block or the combustion chamber. Motor 1 leads. Thus, the size indirectly allows a conclusion about the temperature of the internal combustion engine 1.
- a threshold is further determined, which will be needed later in the process.
- the threshold value can advantageously be determined as a function of the determined shut-off time and / or the coolant temperature and / or of the ambient temperature of the internal combustion engine 1 at the time of starting the internal combustion engine 1. The meaning of the threshold will become clear in the further course of the description of the embodiment.
- the size is determined continuously or at regular intervals until the next shutdown of the internal combustion engine.
- step 204 it is checked whether there is a request to shut down the internal combustion engine 1 by the stop-start automatic 33. If this is not the case, the query is repeated.
- step 205 If the result of the query is positive, it is checked in step 205 whether the determined variable exceeds the predefined threshold value. If this is not the case, deactivation of the internal combustion engine 1 by the stop-start automatic system 3 is inhibited and the method returns to step 204.
- step 206 in which the shutdown of the internal combustion engine 1 by the stop-start automatic system 33 is allowed.
- step 207 the internal combustion engine 1 is turned off by the stop-start automatic 33. This may for example be the case when stopping at a traffic light, where the motor vehicle is and the internal combustion engine 1 is idling. In this case, the driving force of the internal combustion engine 1 is not needed and is turned off for the purpose of fuel economy.
- step 208 it is checked whether the condition or the conditions for a restart of the internal combustion engine 1 are fulfilled. This may for example be the case when the motor vehicle driver expresses his desire to continue driving by engaging a gear or by pedaling the accelerator pedal. If the result of the query in step 208 is negative, it is repeated. If the result is positive, the process proceeds to step 201 where the engine 1 is started by the stop-start automatic 33.
- the method described has the advantage that the switching off of the internal combustion engine 1 takes place as a function of the size which is representative of the work done by the internal combustion engine 1 since the last start. Since the work performed is also a measure of the heat input into the engine block caused by the engine combustion, the shutdown of the engine by the stop-start system 33 is allowed or prevented indirectly depending on the temperature of the engine 1.
- the method described represents an alternative to the prior art, in which the shutdown takes place in dependence on the output signal of a coolant temperature sensor. The process is characterized by high reliability, accuracy and operational safety.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (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 (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200980114256.2A CN102016269B (zh) | 2008-04-22 | 2009-03-20 | 用于利用自动制动起动机构来控制内燃机的方法和装置 |
US12/988,547 US8596248B2 (en) | 2008-04-22 | 2009-03-20 | Method and device for controlling an internal combustion engine with an automatic engine cut-off and starting system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008020185.5 | 2008-04-22 | ||
DE102008020185.5A DE102008020185B4 (de) | 2008-04-22 | 2008-04-22 | Verfahren und Vorrichtung zum Steuern einer Brennkraftmaschine mit Stopp-Start-Automatik |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009130098A1 true WO2009130098A1 (de) | 2009-10-29 |
Family
ID=40751917
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2009/053323 WO2009130098A1 (de) | 2008-04-22 | 2009-03-20 | Verfahren und vorrichtung zum steuern einer brennkraftmaschine mit stopp-start-automatik |
Country Status (5)
Country | Link |
---|---|
US (1) | US8596248B2 (de) |
KR (1) | KR20110008255A (de) |
CN (1) | CN102016269B (de) |
DE (1) | DE102008020185B4 (de) |
WO (1) | WO2009130098A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8416067B2 (en) | 2008-09-09 | 2013-04-09 | United Parcel Service Of America, Inc. | Systems and methods for utilizing telematics data to improve fleet management operations |
US11482058B2 (en) | 2008-09-09 | 2022-10-25 | United Parcel Service Of America, Inc. | Systems and methods for utilizing telematics data to improve fleet management operations |
JP5477137B2 (ja) * | 2010-04-15 | 2014-04-23 | 株式会社デンソー | エンジン自動停止再始動制御装置 |
DE102010039874B4 (de) | 2010-08-27 | 2015-10-08 | Continental Automotive Gmbh | Verfahren und Vorrichtung zum Betreiben eines Kraftstoff-Hochdruckspeichereinspritzsystems für eine Brennkraftmaschine |
FR2969212B1 (fr) * | 2010-12-20 | 2014-06-13 | Renault Sa | Procede d'arret automatique d'un moteur a combustion interne par un systeme d'arret et de redemarrage automatique |
US9953468B2 (en) | 2011-03-31 | 2018-04-24 | United Parcel Service Of America, Inc. | Segmenting operational data |
US9208626B2 (en) | 2011-03-31 | 2015-12-08 | United Parcel Service Of America, Inc. | Systems and methods for segmenting operational data |
DE102011089898A1 (de) | 2011-12-23 | 2013-06-27 | Continental Automotive Gmbh | Verfahren zum Betreiben eines Luftmassensensors |
AT513359B1 (de) * | 2012-08-17 | 2014-07-15 | Ge Jenbacher Gmbh & Co Og | Verfahren zum Betreiben einer Brennkraftmaschine |
JP5765319B2 (ja) * | 2012-11-16 | 2015-08-19 | トヨタ自動車株式会社 | ハイブリッド車両の制御システム及びハイブリッド車両 |
US9805521B1 (en) | 2013-12-03 | 2017-10-31 | United Parcel Service Of America, Inc. | Systems and methods for assessing turns made by a vehicle |
US20160334225A1 (en) | 2015-05-11 | 2016-11-17 | United Parcel Service Of America, Inc. | Determining street segment headings |
US10934933B2 (en) | 2018-08-31 | 2021-03-02 | Paccar Inc | Fuel gelling prevention using engine auto start functionality |
DE102019129364A1 (de) * | 2019-10-30 | 2021-05-06 | Audi Ag | Verfahren zum Betreiben einer Brennkraftmaschine sowie entsprechende Brennkraftmaschine |
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EP1223324A2 (de) * | 2001-01-16 | 2002-07-17 | Toyota Jidosha Kabushiki Kaisha | System und Verfahren zur Unterdrückung der Kohlenwasserstoffentladung für Kraftfahrzeuge |
US6675088B2 (en) * | 2001-07-16 | 2004-01-06 | Fujitsu Ten Limited | Vehicle idling stop control apparatus |
EP1591648A1 (de) * | 2003-02-03 | 2005-11-02 | Kobelco Construction Machinery Co., Ltd. | Antriebssteuerungsvorrichtung für eine baumaschine |
Family Cites Families (11)
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US4539643A (en) * | 1981-10-01 | 1985-09-03 | Nissan Motor Company, Limited | Fuel cut-off control system in fuel injection internal combustion engine with automatic power transmission |
US5483941A (en) * | 1993-10-25 | 1996-01-16 | Ford Motor Company | Method and apparatus for maintaining temperatures during engine fuel cutoff modes |
US5638802A (en) * | 1995-02-25 | 1997-06-17 | Honda Giken Kogyo Kabushiki Kaisha | Fuel metering control system for internal combustion engine |
JP3484088B2 (ja) * | 1998-12-17 | 2004-01-06 | 本田技研工業株式会社 | プラントの制御装置 |
EP1010882B1 (de) * | 1998-12-17 | 2004-05-12 | Honda Giken Kogyo Kabushiki Kaisha | Steuersystem für das Luft/Kraftstoffverhältnis einer Brennkraftmaschine |
JP3992933B2 (ja) * | 2001-01-16 | 2007-10-17 | トヨタ自動車株式会社 | 車輌のエンジン排気浄化運転方法 |
JP3767426B2 (ja) * | 2001-06-14 | 2006-04-19 | 日産自動車株式会社 | エンジンのシリンダ吸入空気量算出装置 |
DE10256993B4 (de) * | 2001-12-06 | 2018-05-09 | Denso Corporation | Steuergerät für eine Brennkraftmaschine |
US7051514B2 (en) * | 2004-07-27 | 2006-05-30 | Ford Global Technologies, Llc | System and method for reducing NOx emissions after fuel cut-off events |
EP1994270A1 (de) * | 2006-03-13 | 2008-11-26 | Peugeot Citroen Automobiles S.A. | Verfahren zur identifikation von emissionsschwellwerten für schädliche gase hinsichtlich der steuerung des betriebs eines kraftfahrzeugs in einem stopp- und start-modus |
DE102008038446B3 (de) * | 2008-08-20 | 2010-02-11 | Continental Automotive Gmbh | Verfahren und Vorrichtung zur Steuerung des Antriebs eines Kraftfahrzeuges |
-
2008
- 2008-04-22 DE DE102008020185.5A patent/DE102008020185B4/de active Active
-
2009
- 2009-03-20 US US12/988,547 patent/US8596248B2/en active Active
- 2009-03-20 WO PCT/EP2009/053323 patent/WO2009130098A1/de active Application Filing
- 2009-03-20 CN CN200980114256.2A patent/CN102016269B/zh active Active
- 2009-03-20 KR KR1020107026082A patent/KR20110008255A/ko not_active Application Discontinuation
Patent Citations (4)
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US6128948A (en) * | 1999-02-16 | 2000-10-10 | General Motors Corporation | Methodology for diagnosing engine cooling system warm-up behavior |
EP1223324A2 (de) * | 2001-01-16 | 2002-07-17 | Toyota Jidosha Kabushiki Kaisha | System und Verfahren zur Unterdrückung der Kohlenwasserstoffentladung für Kraftfahrzeuge |
US6675088B2 (en) * | 2001-07-16 | 2004-01-06 | Fujitsu Ten Limited | Vehicle idling stop control apparatus |
EP1591648A1 (de) * | 2003-02-03 | 2005-11-02 | Kobelco Construction Machinery Co., Ltd. | Antriebssteuerungsvorrichtung für eine baumaschine |
Also Published As
Publication number | Publication date |
---|---|
KR20110008255A (ko) | 2011-01-26 |
DE102008020185B4 (de) | 2015-03-12 |
US8596248B2 (en) | 2013-12-03 |
CN102016269A (zh) | 2011-04-13 |
CN102016269B (zh) | 2015-06-17 |
US20110040477A1 (en) | 2011-02-17 |
DE102008020185A1 (de) | 2009-11-05 |
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