DE10052781B4 - Method for starting an internal combustion engine - Google Patents
Method for starting an internal combustion engine Download PDFInfo
- Publication number
- DE10052781B4 DE10052781B4 DE10052781.7A DE10052781A DE10052781B4 DE 10052781 B4 DE10052781 B4 DE 10052781B4 DE 10052781 A DE10052781 A DE 10052781A DE 10052781 B4 DE10052781 B4 DE 10052781B4
- Authority
- DE
- Germany
- Prior art keywords
- combustion engine
- internal combustion
- towing
- fuel
- combustion chamber
- 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.)
- Expired - Fee Related
Links
Images
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
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/12—Other methods of operation
- F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
- F02D2009/0201—Arrangements; Control features; Details thereof
- F02D2009/024—Increasing intake vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
- F02D2009/0201—Arrangements; Control features; Details thereof
- F02D2009/0249—Starting engine, e.g. closing throttle in Diesel engine to reduce starting torque
-
- 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
- F02D2200/04—Engine intake system parameters
- F02D2200/0406—Intake manifold pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/0015—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for using exhaust gas sensors
- F02D35/0046—Controlling fuel supply
-
- 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
- F02N11/04—Starting of engines by means of electric motors the motors being associated with current generators
-
- 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
- Y02T10/12—Improving ICE efficiencies
Landscapes
- 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)
Abstract
Verfahren zum Starten einer Brennkraftmaschine, wobei wenigstens einem Brennraum (2) der Brennkraftmaschine (1) über eine Ansaugleitung (4) Ansaugluft zugeführt wird und Kraftstoff in den wenigstens einen Brennraum (2) eingespritzt wird, wobei beim Starten ein Anschleppen der Brennkraftmaschine (1) mittels einer Anschleppeinrichtung (9) derart erfolgt, dass eine Drehzahl der Brennkraftmaschine (1) auf einen über einer Leerlaufdrehzahl erhöhten Wert ansteigt, wobei die Einspritzung von Kraftstoff um eine Mehrzahl von Oszillationsbewegungen eines in dem wenigstens einen Brennraum (2) angeordneten Kolbens (3) gegenüber dem Beginn des Anschleppens verzögert erfolgt, dadurch gekennzeichnet, dass beim Anschleppen durch Schliessen einer in der Ansaugleitung (4) sich befindlichen Drosselklappe (5) und durch gleichzeitige Oszillationsbewegungen des Kolbens (3) ein Unterdruck in der Ansaugleitung (4) erzeugt wird und erst nach Erreichen eines bestimmten Unterdrucks die Einspritzung von Kraftstoff in den wenigstens einen Brennraum (2) der Brennkraftmaschine (1) erfolgt, wobei der bestimmte Unterdruck etwa 500 mbar beträgt.Method for starting an internal combustion engine, wherein at least one combustion chamber (2) of the internal combustion engine (1) via a suction line (4) is supplied to intake air and fuel in the at least one combustion chamber (2) is injected, wherein at starting a towing the internal combustion engine (1) by means of a towing device (9) such that a rotational speed of the internal combustion engine (1) increases to an idling speed increased value, wherein the injection of fuel to a plurality of oscillatory movements of the at least one combustion chamber (2) arranged piston (3) Delayed in relation to the start of towing, characterized in that a drag in the intake line (4) is generated during towing by closing a throttle valve (5) located in the intake line (4) and by simultaneous oscillatory movements of the piston (3) after reaching a certain negative pressure the injection of Kra fuel into the at least one combustion chamber (2) of the internal combustion engine (1), wherein the specific negative pressure is about 500 mbar.
Description
Die Erfindung betrifft ein Verfahren zum Starten einer Brennkraftmaschine nach der im Oberbegriff von Anspruch 1 näher definierten Art.The invention relates to a method for starting an internal combustion engine according to the closer defined in the preamble of claim 1.
Aus der
In der
In der
Aus der
Bei diesem Verfahren wird davon ausgegangen, daß ein verzögertes Einspritzen bei einer in der Größenordnung der Leerlaufdrehzahl liegenden Anschleppdrehzahl zu geringeren Kohlenwasserstoff-Rohemissionen im Abgas der Brennkraftmaschine führt als bei herkömmlichen Betriebs- bzw. Startverfahren, bei denen die Brennkraftmaschine auf eine sehr viel geringere Drehzahl angeschleppt wird und die Zündung und die Einspritzung von Kraftstoff gleichzeitig erfolgen.In this method, it is assumed that a delayed injection at a lying on the order of the idle speed towing lower emissions of hydrocarbon raw emissions in the exhaust gas of the internal combustion engine than in conventional operating or starting method in which the internal combustion engine towed to a much lower speed and the ignition and injection of fuel take place simultaneously.
Zwar mag mit den beschriebenen Verfahren eine Reduzierung der Abgasemissionen möglich sein, dies ist jedoch zur Einhaltung bestimmter Abgasgrenzwerte bei weitem noch nicht ausreichend. In diesem Zusammenhang ist zu beachten, daß für das Erreichen bestimmter Abgasgrenzwerte bzw. für die Einteilung in bestimmte Schadstoffklassen insbesondere die während des Starts der Brennkraftmaschine emittierten Abgase entscheidend sind.Although it may be possible with the described method, a reduction in exhaust emissions, but this is far from sufficient to comply with certain emission limits. In this context, it should be noted that for the achievement of certain exhaust emission limits or for the classification into certain pollutant classes in particular the exhaust gases emitted during the start of the internal combustion engine are crucial.
Es ist daher Aufgabe der vorliegenden Erfindung, ein Verfahren zum Starten einer Brennkraftmaschine zu schaffen, bei dem die von der Brennkraftmaschine emittierten Abgase, insbesondere Kohlenwasserstoffe, reduziert werden.It is therefore an object of the present invention to provide a method for starting an internal combustion engine, in which the exhaust gases emitted by the internal combustion engine, in particular hydrocarbons, are reduced.
Erfindungsgemäß wird diese Aufgabe durch die im Anspruch 1 genannten Merkmale gelöst.According to the invention this object is achieved by the features mentioned in claim 1.
Erfindungsgemäß wird in der Ansaugleitung ein Unterdruck mit einer bestimmten Höhe, also mit anderen Worten ein definierter Druck, erzeugt und erst nach Erreichen dieses Unterdrucks wird Kraftstoff in den wenigstens einen Brennraum eingespritzt. Es hat sich nämlich gezeigt, daß das Starten der Brennkraftmaschine mit einem bestimmten Unterdruck für die Gemischaufbereitung sehr vorteilhaft ist und zu sehr geringen Abgasemissionen führt, insbesondere was die emittierten Kohlenwasserstoffe anbelangt. Der bestimmte Unterdruck beträgt etwa 500 mbar.According to the invention, a negative pressure with a certain height, in other words a defined pressure, is generated in the intake line, and only after reaching this negative pressure fuel is injected into the at least one combustion chamber. It has been shown that the starting of the internal combustion engine with a certain negative pressure for the mixture preparation is very advantageous and leads to very low exhaust emissions, in particular as far as the emitted hydrocarbons. The specific negative pressure is about 500 mbar.
Da speziell die ersten Einspritzungen signifikante Auswirkungen auf die Abgasemissionen haben, können mit Hilfe des erfindungsgemäßen Verfahrens weitaus niedrigere Abgasgrenzwerte eingehalten werden bzw. es ist eine Einstufung in eine niedrigere Schadstoffklasse als bislang möglich.Since, in particular, the first injections have a significant effect on the exhaust emissions, much lower exhaust gas limit values can be maintained with the aid of the method according to the invention or a classification into a lower pollutant class than hitherto is possible.
Der Unterdruck in der Ansaugleitung wird durch Schließen einer in der Ansaugleitung sich befindlichen Drosselklappe und durch gleichzeitige Oszillationsbewegungen eines in dem wenigstens einen Brennraum angeordneten Kolbens erzeugt. Mittels dieser Vorgehensweise, bei der also die Brennkraftmaschine mit einer bestimmten Anschleppdrehzahl betrieben wird, kann der Unterdruck sehr einfach und ohne zusätzliche Bauteile erzeugt werden.The negative pressure in the intake passage is generated by closing a throttle valve located in the intake passage and by simultaneous oscillatory movements of a piston arranged in the at least one combustion chamber. By means of this procedure, in which therefore the internal combustion engine is operated at a certain towing speed, the negative pressure can be generated very easily and without additional components.
Die Schadstoffemissionen lassen sich noch weiter senken, wenn in einer vorteilhaften Ausgestaltung der Erfindung vor der ersten Einspritzung von Kraftstoff in den wenigstens einen Brennraum die Drehzahl der Brennkraftmaschine auf etwa 1250 1/min erhöht wird.The pollutant emissions can be further reduced if, in an advantageous embodiment of the invention, before the first injection of fuel into the at least one combustion chamber, the speed of the internal combustion engine is increased to about 1250 1 / min.
Das beschriebene Verfahren läßt sich besonders gut in die Praxis umsetzen und es werden sehr gute Abgaswerte erreicht, wenn der Kraftstoff mittels wenigstens eines luftumfaßten Einspritzventils in den wenigstens einen Brennraum eingespritzt wird, da hierdurch eine noch bessere Gemischaufbereitung aufgrund der besonderen Eigenschaften dieser Einspritzventile bei bestimmten Druckverhältnissen möglich ist.The method described can be implemented particularly well in practice and very good exhaust gas values are achieved when the fuel is injected into the at least one combustion chamber by means of at least one air-filled injection valve, since this results in even better mixture preparation due to the special properties of these injection valves under certain pressure conditions is possible.
Weitere vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen sowie aus dem nachfolgend anhand der Zeichnung prinzipmäßig dargestellten Ausführungsbeispiel.Further advantageous embodiments and modifications of the invention will become apparent from the dependent claims and from the embodiment illustrated in principle below with reference to the drawing.
Es zeigt:It shows:
Von der Brennkraftmaschine
Um Kraftstoff in die Brennräume
Zum Erreichen einer Rotation der nicht dargestellten Kurbelwelle der Brennkraftmaschine
Die Art und Weise, wie die Brennkraftmaschine
Der erforderliche Unterdruck in der Ansaugleitung
Anschließend erfolgt also die durch den Balken
Die beschriebene Vorgehensweise beim Starten der Brennkraftmaschine
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10052781.7A DE10052781B4 (en) | 2000-10-25 | 2000-10-25 | Method for starting an internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10052781.7A DE10052781B4 (en) | 2000-10-25 | 2000-10-25 | Method for starting an internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10052781A1 DE10052781A1 (en) | 2002-05-08 |
DE10052781B4 true DE10052781B4 (en) | 2015-09-03 |
Family
ID=7660945
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10052781.7A Expired - Fee Related DE10052781B4 (en) | 2000-10-25 | 2000-10-25 | Method for starting an internal combustion engine |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10052781B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018106211A1 (en) * | 2018-03-16 | 2019-09-19 | Volkswagen Aktiengesellschaft | Starting method for an internal combustion engine, internal combustion engine and motor vehicle |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7174879B1 (en) * | 2006-02-10 | 2007-02-13 | Ford Global Technologies, Llc | Vibration-based NVH control during idle operation of an automobile powertrain |
US20070261654A1 (en) * | 2006-05-11 | 2007-11-15 | Ford Global Technologies, Llc | System and method for reducing pressure in an intake manifold of an internal combustion engine |
DE102008042514B4 (en) | 2008-09-30 | 2019-08-14 | Robert Bosch Gmbh | Method and control device for starting an internal combustion engine |
DE102012011990B4 (en) | 2012-06-16 | 2023-07-20 | Volkswagen Aktiengesellschaft | Method and device for starting an internal combustion engine |
DE102012011993B4 (en) | 2012-06-16 | 2021-03-18 | Volkswagen Aktiengesellschaft | Method and device for starting an internal combustion engine |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE701481C (en) * | 1935-09-25 | 1941-01-17 | Bosch Gmbh Robert | Electric starting device for internal combustion engines |
DE1007558B (en) * | 1952-12-13 | 1957-05-02 | Motoren Werke Mannheim Ag | Method to facilitate the starting of four-stroke diesel engines |
EP0744545A2 (en) * | 1995-05-23 | 1996-11-27 | Toyota Jidosha Kabushiki Kaisha | Controllers for a combustion engine able to lower the intake air pressure to a vacuum during an engine cranking operation |
DE19705865A1 (en) * | 1997-02-15 | 1998-09-03 | Daimler Benz Ag | Internal combustion engine operation method especially for motor vehicle |
-
2000
- 2000-10-25 DE DE10052781.7A patent/DE10052781B4/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE701481C (en) * | 1935-09-25 | 1941-01-17 | Bosch Gmbh Robert | Electric starting device for internal combustion engines |
DE1007558B (en) * | 1952-12-13 | 1957-05-02 | Motoren Werke Mannheim Ag | Method to facilitate the starting of four-stroke diesel engines |
EP0744545A2 (en) * | 1995-05-23 | 1996-11-27 | Toyota Jidosha Kabushiki Kaisha | Controllers for a combustion engine able to lower the intake air pressure to a vacuum during an engine cranking operation |
DE19705865A1 (en) * | 1997-02-15 | 1998-09-03 | Daimler Benz Ag | Internal combustion engine operation method especially for motor vehicle |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018106211A1 (en) * | 2018-03-16 | 2019-09-19 | Volkswagen Aktiengesellschaft | Starting method for an internal combustion engine, internal combustion engine and motor vehicle |
Also Published As
Publication number | Publication date |
---|---|
DE10052781A1 (en) | 2002-05-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE10111928B4 (en) | Method for starter-free starting a multi-cylinder internal combustion engine | |
DE19945813A1 (en) | Method for operating an internal combustion engine | |
EP0383088A1 (en) | Engine brake for lorries | |
DE10306632A1 (en) | Method for operating an internal combustion engine | |
DE102011086948A1 (en) | Method and device for controlling an internal combustion engine | |
DE10341775B4 (en) | Fuel type fuel injection system | |
DE10052781B4 (en) | Method for starting an internal combustion engine | |
DE102013019340A1 (en) | Reciprocating internal combustion engine and method for operating a reciprocating internal combustion engine | |
DE19882042B4 (en) | Control device and control method for a cam-driven, electronically controlled pump-injector unit | |
DE102007001119A1 (en) | Method for operating an internal combustion engine | |
DE10342703B4 (en) | Method for starting a multi-cylinder internal combustion engine and internal combustion engine | |
DE102004046628B4 (en) | Method for starting an internal combustion engine | |
DE19947784B4 (en) | Method for starting an internal combustion engine | |
DE69828567T2 (en) | Device for controlling the pilot injection in an internal combustion engine | |
DE102015009898A1 (en) | Method for operating a reciprocating internal combustion engine | |
DE102007050304A1 (en) | Method for controlling a fuel supply system of an internal combustion engine | |
EP0781907A1 (en) | Method and device for operating an auto-igniting piston engine | |
EP1881186A2 (en) | Method for operating an internal combustion engine with plural cylinders | |
DE102006016889A1 (en) | Method for direct start of multi-cylinder internal combustion piston engine is arranged so that gas exchange valve unit of first combustion chamber during first compression stroke is opened towards end crankshaft reverse movement | |
DE102019119836B4 (en) | machine control system | |
DE102016219864A1 (en) | Method and device for injecting a cooling fluid into a motor | |
DE10341279B4 (en) | Method of performing a high-pressure start | |
DE10217695A1 (en) | Starting method for IC engine using adjustment of closure timing of engine intake valves and selective closure of intake channel for each engine cylinder | |
DE102012209062A1 (en) | Method for stopping and starting internal combustion engine, involves turning off starting cylinder located at starting injection cylinder and providing position units for adjusting fresh-air charge passing through exhaust stroke | |
DE102011002475B4 (en) | Fuel injection control device of an internal combustion engine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8127 | New person/name/address of the applicant |
Owner name: DAIMLERCHRYSLER AG, 70327 STUTTGART, DE |
|
8110 | Request for examination paragraph 44 | ||
8127 | New person/name/address of the applicant |
Owner name: DAIMLER AG, 70327 STUTTGART, DE |
|
R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |