DE102016123743A1 - Method for operating a diesel engine - Google Patents
Method for operating a diesel engine Download PDFInfo
- Publication number
- DE102016123743A1 DE102016123743A1 DE102016123743.4A DE102016123743A DE102016123743A1 DE 102016123743 A1 DE102016123743 A1 DE 102016123743A1 DE 102016123743 A DE102016123743 A DE 102016123743A DE 102016123743 A1 DE102016123743 A1 DE 102016123743A1
- Authority
- DE
- Germany
- Prior art keywords
- plasma
- fuel
- diesel engine
- air mixture
- cylinder pressure
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 239000000446 fuel Substances 0.000 claims abstract description 16
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims abstract description 6
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
Images
Classifications
-
- 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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P23/00—Other ignition
- F02P23/04—Other physical ignition means, e.g. using laser rays
- F02P23/045—Other physical ignition means, e.g. using laser rays using electromagnetic microwaves
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/045—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions combined with electronic control of other engine functions, e.g. fuel injection
Abstract
Die Erfindung betrifft ein Verfahren zum Betreiben eines Dieselmotors und einen Dieselmotor. Erfindungsgemäß wird ein Kraftstoff mit einer Cetanzahl CZ von CZ ≤ 60 verwendet, und ein Kraftstoff-Luftgemisch in einem Zylinder des Dieselmotors mittels eines Plasmas gezündet.The invention relates to a method for operating a diesel engine and a diesel engine. According to the invention, a fuel having a cetane number CZ of CZ ≦ 60 is used, and a fuel-air mixture in a cylinder of the diesel engine is ignited by means of a plasma.
Description
Die Erfindung betrifft ein Verfahren zum Betreiben eines Dieselmotors und einen Dieselmotor. The invention relates to a method for operating a diesel engine and a diesel engine.
Die
Das erfindungsgemäße Verfahren zum Betreiben eines Dieselmotors sieht vor, dass ein Kraftstoff mit einer Cetanzahl CZ von CZ kleiner gleich 60 verwendet wird, und ein Kraftstoff-Luftgemisch in einem Zylinder des Dieselmotors mittels eines Plasmas gezündet wird. The method according to the invention for operating a diesel engine provides that a fuel with a cetane number CZ of CZ less than or equal to 60 is used, and a fuel-air mixture in a cylinder of the diesel engine is ignited by means of a plasma.
Vorteil der Erfindung ist, dass der gegenüber einem Ottomotor vorteilhafte Wirkungsgrad eines Dieselmotors für einen Betrieb mit Kraftstoffen ausgenutzt werden kann, die eine niedrige Cetanzahl haben, also schwer selbstentzündlich sind und damit üblicherweise für den Ottomotor verwendet werden. Die für eine Zündung des Kraftstoff-Luftgemischs notwendigen hohen Temperaturen werden durch ein Plasma erzeugt. Das Plasma wird bevorzugt mittels Mikrowellen, beispielsweise mittels einer Mikrowellenzünd-/-glühkerze, erzeugt. Vorzugsweise wird ein Kraftstoff mit einer Cetanzahl von CZ ≤ 40, besonders bevorzugt von CZ ≤ 30 verwendet. Advantage of the invention is that over a gasoline engine advantageous efficiency of a diesel engine can be exploited for operation with fuels that have a low cetane number, so are difficult selbstentzündlich and thus usually used for the gasoline engine. The necessary for an ignition of the fuel-air mixture high temperatures are generated by a plasma. The plasma is preferably generated by means of microwaves, for example by means of a microwave ignition / glow plug. Preferably, a fuel having a cetane number of CZ ≦ 40, more preferably CZ ≦ 30, is used.
Ein erfindungsgemäßer Dieselmotor umfasst eine Mikrowellenvorrichtung und ein Steuergerät zum Steuern der Mikrowellenvorrichtung, wobei das Steuergerät eingerichtet ist, das erfindungsgemäße Verfahren auszuführen. A diesel engine according to the invention comprises a microwave device and a control device for controlling the microwave device, wherein the control device is set up to carry out the method according to the invention.
Bevorzugte Ausführungsbeispiele werden anhand der folgenden Figuren näher erläutert. Dabei zeigt Preferred embodiments will be explained in more detail with reference to the following figures. It shows
Die
Mittels der Mikrowellenvorrichtung
Erfindungsgemäß wird der Dieselmotor
Es ist bevorzugt, dass der Zylinder
Verfahrensgemäß wird im Verdichtungstakt nach dem Durchlaufen des unteren Totpunktes UT und vor dem oberen Totpunkt OT ein Kraftstoff in den Zylinder
Nach dem Einschalten des Plasmas und nach einer damit beginnenden Einschaltphase wird der Plasmastrom reduziert und der Plasmastrom in einer Haltephase auf einem gegenüber der Einschaltphase niedrigerem Niveau gehalten. Dies hat den Vorteil, dass der Energieverbrauch gesenkt und die Mikrowellenvorrichtung geschont wird. After the plasma has been switched on and after a switch-on phase commencing therewith, the plasma current is reduced and the plasma current in a holding phase is kept at a lower level than the switch-on phase. This has the advantage that the energy consumption is reduced and the microwave device is spared.
In einer sich an die Haltephase anschließenden Zündphase wird der Plasmastrom gegenüber der Haltephase erhöht, so dass das Kraftstoff-Luftgemisch gezündet wird. Bei Überschreiten eines oberen Zylinderdruckgrenzwertes wird die Mikrowellenvorrichtung
In diesem Ausführungsbeispiel wir zusätzlich anhand einer Messung des Zylinderdruckes geprüft, ob eine Verbrennung des Kraftstoff-Luftgemisches stattfindet. Falls dies der Fall sein sollte, wird die Mikrowellenvorrichtung
Der Zylinderdruck lässt sich beispielsweise über einen Drucksensor
Die Zündung des Kraftstoff-Luftgemisches mittels des Plasmas erfolgt bis zu einem Lastschwellenwert, ab dem die Zündung durch Selbstzündung gewährleistet ist. Entsprechend bleiben oberhalb des Lastschwellenwertes die Mikrowellenvorrichtung und damit das Plasma ausgeschaltet. The ignition of the fuel-air mixture by means of the plasma takes place up to a load threshold, from which the ignition is ensured by auto-ignition. Accordingly, the microwave device and thus the plasma remain switched off above the load threshold value.
Die Durchführung des beschriebenen Verfahrens, insbesondere die Steuerung der Mikrowellenvorrichtung, wird durch das Steuergerät
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102008035241 B4 [0002] DE 102008035241 B4 [0002]
Claims (12)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016123743.4A DE102016123743A1 (en) | 2016-12-08 | 2016-12-08 | Method for operating a diesel engine |
DE102017128772.8A DE102017128772A1 (en) | 2016-12-08 | 2017-12-04 | Method for operating a diesel engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016123743.4A DE102016123743A1 (en) | 2016-12-08 | 2016-12-08 | Method for operating a diesel engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102016123743A1 true DE102016123743A1 (en) | 2017-04-13 |
Family
ID=58405947
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102016123743.4A Withdrawn DE102016123743A1 (en) | 2016-12-08 | 2016-12-08 | Method for operating a diesel engine |
DE102017128772.8A Withdrawn DE102017128772A1 (en) | 2016-12-08 | 2017-12-04 | Method for operating a diesel engine |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102017128772.8A Withdrawn DE102017128772A1 (en) | 2016-12-08 | 2017-12-04 | Method for operating a diesel engine |
Country Status (1)
Country | Link |
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DE (2) | DE102016123743A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008035241B4 (en) | 2008-07-29 | 2012-11-29 | Continental Automotive Gmbh | Internal combustion engine and method for igniting a combustion mixture in the combustion chamber of an internal combustion engine |
-
2016
- 2016-12-08 DE DE102016123743.4A patent/DE102016123743A1/en not_active Withdrawn
-
2017
- 2017-12-04 DE DE102017128772.8A patent/DE102017128772A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008035241B4 (en) | 2008-07-29 | 2012-11-29 | Continental Automotive Gmbh | Internal combustion engine and method for igniting a combustion mixture in the combustion chamber of an internal combustion engine |
Also Published As
Publication number | Publication date |
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DE102017128772A1 (en) | 2018-06-14 |
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Legal Events
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R081 | Change of applicant/patentee |
Owner name: FACHHOCHSCHULE AACHEN, DE Free format text: FORMER OWNER: FEV GMBH, 52078 AACHEN, DE Owner name: FEV EUROPE GMBH, DE Free format text: FORMER OWNER: FEV GMBH, 52078 AACHEN, DE |
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R230 | Request for early publication | ||
R163 | Identified publications notified | ||
R081 | Change of applicant/patentee |
Owner name: FEV EUROPE GMBH, DE Free format text: FORMER OWNER: FEV EUROPE GMBH, 52078 AACHEN, DE Owner name: FACHHOCHSCHULE AACHEN, DE Free format text: FORMER OWNER: FEV EUROPE GMBH, 52078 AACHEN, DE |
|
R118 | Application deemed withdrawn due to claim for domestic priority |