DE4035064C1 - Method of fuelling IC engine - has fuel and water vapour mix cooled after passing through compressor - Google Patents
Method of fuelling IC engine - has fuel and water vapour mix cooled after passing through compressorInfo
- Publication number
- DE4035064C1 DE4035064C1 DE4035064A DE4035064A DE4035064C1 DE 4035064 C1 DE4035064 C1 DE 4035064C1 DE 4035064 A DE4035064 A DE 4035064A DE 4035064 A DE4035064 A DE 4035064A DE 4035064 C1 DE4035064 C1 DE 4035064C1
- Authority
- DE
- Germany
- Prior art keywords
- fuel
- mixture
- vapor
- water vapor
- water
- 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 - Lifetime
Links
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
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/20—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for cooling
-
- 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
- F02B47/00—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines
- F02B47/02—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being water or steam
-
- 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
- F02M25/022—Adding fuel and water emulsion, water or steam
- F02M25/0228—Adding fuel and water emulsion
-
- 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
- F02M25/022—Adding fuel and water emulsion, water or steam
- F02M25/025—Adding water
- F02M25/03—Adding water into the cylinder or the pre-combustion chamber
-
- 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
- F02M25/022—Adding fuel and water emulsion, water or steam
- F02M25/032—Producing and adding steam
- F02M25/038—Producing and adding steam into the cylinder or the pre-combustion chamber
-
- 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
-
- 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)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren zum Betreiben eines Kolbenmotors unter Zufuhr eines un ter Druck stehenden Brennstoffdampf/Wasserdampf-Ge misches zum Zylinderraum des Kolbenmotors in vorkom primierte Verbrennungsluft. Das Brennstoffdampf/Was serdampf-Gemisch wird in den Zylinderraum noch vor Erreichen des oberen Kolbentotpunktes injiziert. Gegenstand der Erfindung ist auch eine Einrichtung zur Durchführung des Verfahrens.The invention relates to a method for Operating a piston engine while supplying an un pressure fuel vapor / water vapor Ge mix to the cylinder space of the piston engine in occ primed combustion air. The fuel vapor / what Serdampf mixture is still in the cylinder chamber Reached the top piston dead center injected. The invention also relates to a device to carry out the procedure.
Einen Kolbenmotor mit einem Brennstoffdampf/Wasser dampf-Gemisch zu betreiben ist aus DE-OS 37 34 346 A1 bekannt. Das Brennstoffdampf/Wasser dampf-Gemisch wird durch Ausnutzung von Abgaswärme erzeugt. Dabei wird unter einem Druck, der dem zur Injektion des Brennstoffdampf/Wasserdampf-Gemisches erforderlichen Druck entspricht, aus flüssigem Brenn stoff und Wasser ein homogenes Dampfgemisch gebil det. Es hat sich gezeigt, daß das Brennstoffdampf/ Wasserdampf-Gemisch nach Zufuhr in den die kompri mierte Verbrennungsluft enthaltenden Zylinderraum spontan zur Verbrennung neigt und zum Klopfen des Kolbenmotors führt.A piston engine with a fuel vapor / water To operate steam mixture is from DE-OS 37 34 346 A1 known. The fuel vapor / water steam mixture is made use of exhaust heat generated. It is under a pressure that the Injection of the fuel vapor / water vapor mixture corresponds to the required pressure from liquid burning substance and water create a homogeneous vapor mixture det. It has been shown that the fuel vapor / Water vapor mixture after being fed into the kompri cylinder chamber containing combustion air spontaneously tends to burn and knock the Piston engine leads.
Aufgabe der Erfindung ist es, unter Beibehaltung der Aufbereitung des Brennstoffdampf/Wasserdampf- Gemisches die Klopfneigung des Gemisches beim Be trieb eines Kolbenmotors zu verringern. The object of the invention is to maintain the preparation of the fuel vapor / water vapor Mix the tendency of the mixture to knock when loading drive a piston engine to decrease.
Diese Aufgabe wird gemäß der Erfindung durch die im Patentanspruch 1 angegebenen Maßnahmen gelöst. Das Brennstoffdampf/Wasserdampf-Gemisch wird vor seiner Injektion soweit abgekühlt, daß ein Teil des Brennstoffdampfes kondensiert. Wegen der dann im Zy linderraum noch zu verdampfenden kondensierten Brenn stoffmenge erfolgt die durch Selbstzündung einsetzen de Verbrennung erst mit dem in der Dampfphase befind lichen Brennstoff und danach mit dem verdampften restlichen Brennstoff. Dadurch wird eine langsame und klopffreie Verbrennung erreicht. Die Abkühlung des Brennstoffdampf/Wasserdampf-Gemisches kann der art erfolgen, daß neben einem Teil des Brennstoffs auch ein Teil des Wasserdampfes kondensiert wird, Patentanspruch 2, was die Verbrennung weiter ver langsamt.This object is achieved according to the invention by Measures specified in claim 1 solved. The fuel vapor / water vapor mixture is before cooled its injection so far that part of the Fuel vapor condenses. Because of the then in the Zy linderraum condensed burning still to be evaporated The amount of substance is generated by self-ignition de Combustion is only in the vapor phase fuel and then with the vaporized remaining fuel. This will make it slow and knock-free combustion achieved. The cooling of the fuel vapor / water vapor mixture can kind that take place in addition to part of the fuel part of the water vapor is also condensed, Claim 2, which ver further combustion slow.
In weiteren Ausbildungen der Erfindung nach Patentan sprüchen 3 und 4 ist es vorgesehen, die kondensier te Brennstoffmenge bei zunehmender Motorleistung sowie bei einsetzender klopfender Verbrennung bis zur Beendigung des Klopfens zu erhöhen. Um reprodu zierbare Kondensatmengen beim Abkühlen zu erreichen, ist es zweckmäßig, die Temperatur des Brennstoff dampf/ Wasserdampf-Gemisches vor seiner Abkühlung oberhalb der Taupunkttemperatur des Brennstoffs im Brennstoffdampf/Wasserdampf-Gemisch einzustellen, Patentanspruch 5. Zur Abkühlung des Brennstoffdampf/ Wasserdampf-Gemisches dient gemäß Patentanspruch 6 Kondensationswasser, das aus den Motorabgasen durch Abkühlen der Abgase gewonnen wird.In further developments of the invention according to Patentan sayings 3 and 4 it is intended to condense amount of fuel with increasing engine output as well as when knocking combustion starts to increase knocking. To reproduce achievable amounts of condensate when cooling, it is appropriate to adjust the temperature of the fuel steam / steam mixture before it cools down above the dew point temperature of the fuel in the Adjust fuel vapor / water vapor mixture, Claim 5. To cool the fuel vapor / Steam mixture serves according to claim 6 Condensation water coming out of the engine exhaust Cooling the exhaust gases is obtained.
Die Erfindung und weitere Ausbildungsmerkmale der Erfindung werden nachfolgend anhand einer zur Durch führung des erfindungsgemäßen Verfahrens geeigneten Einrichtung näher erläutert. Die Einrichtung ist in der Zeichnung schematisch wiedergegeben. The invention and further training features of Invention are based on a to suitable implementation of the method according to the invention Establishment explained in more detail. The facility is represented schematically in the drawing.
Die Zeichnung zeigt in prinzipieller Darstellung einen Dampferzeuger 1 für ein Brennstoffdampf/Wasser dampf-Gemisch sowie einen Kolbenmotor 2 mit einem Injektionsventil 3 zur Zugabe des Brennstoffdampf/ Wasserdampf-Gemisches zum Zylinderraum 4 des Kol benmotors 2. Das Brennstoffdampf/Wasserdampf-Gemisch wird während des Kompressionshubes des Kolbenmotors in den Zylinderraum 4 injiziert.The drawing shows a basic illustration of a steam generator 1 for a fuel vapor / water vapor mixture and a piston engine 2 with an injection valve 3 for adding the fuel vapor / water vapor mixture to the cylinder space 4 of the Kol benmotors 2nd The fuel vapor / water vapor mixture is injected into the cylinder space 4 during the compression stroke of the piston engine.
Der Dampferzeuger 1 ist im Abgaskanal 5 des Kolben motors 2 angeordnet. Das Brennstoffdampf/Wasserdampf- Gemisch wird in einem Wendelrohrverdampfer 6 erzeugt. Ein Verdampfer dieser Art ist aus der DE-PS 36 26 933 C2 bekannt. Der erforderliche Druck im Wendelrohrverdampfer wird durch eine Flüssigkeits pumpe 7 zum Einspeisen von Wasser und eine Flüssig keitspumpe 8 zum Einspeisen des Brennstoffs erzeugt. Das im Wendelrohrverdampfer gebildete Brennstoff dampf/Wasserdampf-Gemisch strömt in einer Dampfge mischleitung 9 mit einer Temperatur, die oberhalb der Taupunkttemperatur des Brennstoffs im Brennstoff dampf/Wasserdampf-Gemisch liegt, aus dem Wendelrohr verdampfer 6 zum Injektionsventil 3 ab.The steam generator 1 is arranged in the exhaust duct 5 of the piston engine 2 . The fuel vapor / water vapor mixture is generated in a spiral tube evaporator 6 . An evaporator of this type is known from DE-PS 36 26 933 C2. The required pressure in the spiral tube evaporator is generated by a liquid pump 7 for feeding water and a liquid speed pump 8 for feeding the fuel. The fuel vapor / water vapor mixture formed in the spiral tube evaporator flows in a vapor mixing line 9 at a temperature which is above the dew point temperature of the fuel in the fuel vapor / water vapor mixture, from the spiral tube evaporator 6 to the injection valve 3 .
Das den Wendelrohrverdampfer 6 umströmende Motorab gas wird vor Austritt aus dem Abgaskanal 5 (Abgas austritt 5a) noch durch einen Wärmeübertrager 10 geleitet. Das Motorabgas wird im Wärmeübertrager 10 unter Wärmeabgabe bis unter die Kondensationstempe ratur des im Abgas enthaltenden Wasserdampfes abge kühlt. Zum Auffangen des dabei entstehenden Kondens wassers dient ein Kondensatablauf 11, über den das Kondenswasser in einen Kondensatbehälter 12 ab fließt. The motor tube gas flowing around the helical tube evaporator 6 is passed through a heat exchanger 10 before it leaves the exhaust gas duct 5 (exhaust gas outlet 5 a). The engine exhaust gas is cooled in the heat exchanger 10 with heat dissipation to below the condensation temperature of the water vapor contained in the exhaust gas. A condensate drain 11 , via which the condensed water flows into a condensate container 12, is used to collect the resulting condensed water.
Das Kondenswasser dient im Ausführungsbeispiel als Kühlmedium zum Abkühlen des Brennstoffdampf/Wasser dampf-Gemisches vor dessen Eintritt in den Zylinder raum 4. Die Dampfgemischleitung 9 durchzieht hierzu einen Kühler 14, in dem eine Kondenswassserleitung 15 mündet, die druckseitig an der Flüssigkeitspumpe 7 angeschlossen ist. Die Flüssigkeitspumpe 7 saugt das im Kondensatbehälter 12 enthaltende Kondenswas ser ab und befördert es über die Kondenswasserlei tung 15 zum Kühler 14. In die Kondenswasserleitung ist ein Mengenregler 16 zur Einstellung der zum Küh ler 14 geführten Kondenswassermenge eingesetzt. Der Mengenregler 16 wird über einen Temperaturfühler 17 in der Dampfgemischleitung 9 hinter dem Kühler 14 gesteuert. Über die Temperatur in der Dampfgemisch leitung 9 wird die zu kondensierende Menge des Brenn stoff- und Wasserdampfes eingestellt.In the exemplary embodiment, the condensed water serves as a cooling medium for cooling the fuel vapor / water vapor mixture before it enters the cylinder space 4 . For this purpose, the steam mixture line 9 passes through a cooler 14 , in which a condensation water line 15 opens, which is connected on the pressure side to the liquid pump 7 . The liquid pump 7 sucks the water contained in the condensate container 12 from the condensed water and conveys it via the condensate line 15 to the cooler 14 . In the condensate line, a flow controller 16 is used to adjust the amount of condensed water led to the cooler 14 . The quantity regulator 16 is controlled via a temperature sensor 17 in the steam mixture line 9 behind the cooler 14 . The amount of fuel and water vapor to be condensed is set via the temperature in the steam mixture line 9 .
Von Kühler 14 führt eine Rückführleitung 18 für das den Kühler 14 verlassende Kondenswasser zum Wasser eingang 19 am Wendelrohrverdampfer 6. Eine Zulei tung 20 für Kondenswasser zum Wendelrohrverdampfer 6 ist zusätzlich an der Kondenswasserleitung 15 an geschlossen. Die Zuleitung 20 zweigt von der Kon denswasserleitung 15 in Strömungsrichtung des Kon denswassers gesehen noch vor dem Kondensatmengen regler 16 ab. In der Zuleitung 20 befindet sich ein einstellbares Ventil 21.From the cooler 14 , a return line 18 for the condenser water leaving the cooler 14 leads to the water inlet 19 on the helical tube evaporator 6 . A supply line 20 for condensed water to the spiral tube evaporator 6 is additionally closed on the condensed water line 15 . The feed line 20 branches from the condensate conduit 15 seen in the flow direction of the condensate even before the amount of condensate regulator 16 . An adjustable valve 21 is located in the feed line 20 .
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4035064A DE4035064C1 (en) | 1990-11-05 | 1990-11-05 | Method of fuelling IC engine - has fuel and water vapour mix cooled after passing through compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4035064A DE4035064C1 (en) | 1990-11-05 | 1990-11-05 | Method of fuelling IC engine - has fuel and water vapour mix cooled after passing through compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE4035064C1 true DE4035064C1 (en) | 1991-10-31 |
Family
ID=6417628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE4035064A Expired - Lifetime DE4035064C1 (en) | 1990-11-05 | 1990-11-05 | Method of fuelling IC engine - has fuel and water vapour mix cooled after passing through compressor |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE4035064C1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0879945A2 (en) | 1997-05-23 | 1998-11-25 | Werner Posselt | Method of operating an internal combustion engine |
| RU2168030C2 (en) * | 1997-08-18 | 2001-05-27 | Цаголов Рамазан Сабеевич | Thermodynamic cycle and engine operating on such cycle |
| US6845738B2 (en) | 2001-06-21 | 2005-01-25 | Alstom Technology Ltd | Method for operating an internal combustion engine |
| FR2872550A1 (en) * | 2004-07-05 | 2006-01-06 | Renault Sas | DEVICE FOR INJECTING WATER IN AN INTERNAL COMBUSTION ENGINE AND ASSOCIATED METHOD |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3734346A1 (en) * | 1987-10-10 | 1989-04-27 | Kernforschungsanlage Juelich | METHOD AND CYLINDER HEAD FOR SUPPLYING FUEL IN A PISTON ENGINE |
-
1990
- 1990-11-05 DE DE4035064A patent/DE4035064C1/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3734346A1 (en) * | 1987-10-10 | 1989-04-27 | Kernforschungsanlage Juelich | METHOD AND CYLINDER HEAD FOR SUPPLYING FUEL IN A PISTON ENGINE |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0879945A2 (en) | 1997-05-23 | 1998-11-25 | Werner Posselt | Method of operating an internal combustion engine |
| DE19721573A1 (en) * | 1997-05-23 | 1998-11-26 | Werner Posselt | Method for operating an internal combustion engine |
| RU2168030C2 (en) * | 1997-08-18 | 2001-05-27 | Цаголов Рамазан Сабеевич | Thermodynamic cycle and engine operating on such cycle |
| US6845738B2 (en) | 2001-06-21 | 2005-01-25 | Alstom Technology Ltd | Method for operating an internal combustion engine |
| FR2872550A1 (en) * | 2004-07-05 | 2006-01-06 | Renault Sas | DEVICE FOR INJECTING WATER IN AN INTERNAL COMBUSTION ENGINE AND ASSOCIATED METHOD |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8100 | Publication of the examined application without publication of unexamined application | ||
| D1 | Grant (no unexamined application published) patent law 81 | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |