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DE102008010781A1 - Two stroke internal combustion engine has fuel direct injection and compressor for supplying air and catalyzing unit for motor vehicles, and exhaust gases are cleaned additionally with soot particle filter - Google Patents

Two stroke internal combustion engine has fuel direct injection and compressor for supplying air and catalyzing unit for motor vehicles, and exhaust gases are cleaned additionally with soot particle filter Download PDF

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Publication number
DE102008010781A1
DE102008010781A1 DE102008010781A DE102008010781A DE102008010781A1 DE 102008010781 A1 DE102008010781 A1 DE 102008010781A1 DE 102008010781 A DE102008010781 A DE 102008010781A DE 102008010781 A DE102008010781 A DE 102008010781A DE 102008010781 A1 DE102008010781 A1 DE 102008010781A1
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Germany
Prior art keywords
combustion engine
internal combustion
stroke internal
compressor
direct injection
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Ceased
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DE102008010781A
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German (de)
Inventor
Johannes Kroell
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Individual
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Priority to DE102008010781A priority Critical patent/DE102008010781A1/en
Publication of DE102008010781A1 publication Critical patent/DE102008010781A1/en
Ceased legal-status Critical Current

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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
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • F02B25/14—Engines characterised by using fresh charge for scavenging cylinders using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • 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
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
    • 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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/14—Direct injection into 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
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/32—Engines with pumps other than of reciprocating-piston type
    • F02B33/34—Engines with pumps other than of reciprocating-piston type with rotary pumps
    • 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

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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)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

The two stroke internal-combustion engine has a fuel direct injection and a compressor for supplying air and a catalyzing unit for motor vehicles. The exhaust gases are cleaned additionally with a soot particle filter in dependence of the used fuel and by the demanded limit values. A cylinder is provided, which has a threaded hole connected with a suction pipe, an exhaust port and an injector for fuel direct injection under high pressure into the cylinder.

Description

Die Erfindung betrifft eine Zweitakt-Brennkraftmaschine, bei der die Luft für die Verbrennung über einen Verdichter zugeführt und der Kraftstoff direkt in den Brennraum eingespritzt wird. Diese Zweitakt-Brennkraftmaschine kann einen oder mehrere Zylinder haben.The The invention relates to a two-stroke internal combustion engine, wherein the Air for combustion via a compressor supplied and the fuel injected directly into the combustion chamber becomes. This two-stroke internal combustion engine may have one or more cylinders to have.

Je nach Ausführung der Zweitakt-Brennkraftmaschine kann es sich bei dem Kraftstoff um Benzin, Diesel oder Ethanol handeln. Der Kraftstoff wird mit hohem Druck in den Brennraum eingespritzt. In jedem Betriebszustand wird nur so viel Kraftstoff eingespritzt, dass dieser vollständig verbrennt. Da der Einspritzzeitpunkt kurz vor dem Zündzeitpunkt liegt, wird eine weitere Ausbreitung des Kraftstoffes im Brennraum verhindert. Durch dieses Einspritzverfahren wird also auch eine Schichtladung erzielt.ever after execution of the two-stroke internal combustion engine it can the fuel is gasoline, diesel or ethanol. The fuel is injected at high pressure into the combustion chamber. In every operating condition, only so much fuel is injected that it burns completely. Since the injection time just before the ignition point, there will be a further spread prevents the fuel in the combustion chamber. By this injection method is So also achieved a stratified charge.

Die Schmierung des Motors erfolgt wie bei einer Viertakt-Brennkraftmaschine über die Ölwanne und das Kurbelgehäuse. Dadurch muss dem Kraftstoff der Zweitakt-Brennkraftmaschine kein Öl beigemischt werden.The Lubrication of the engine takes place as in a four-stroke internal combustion engine the oil pan and the crankcase. This must be done the fuel of the two-stroke internal combustion engine no oil be mixed.

Durch die Schichtladung können sehr günstige Abgaswerte erreicht werden. Weil lediglich Luft angesaugt wird, kann diese Luft beim Spülen des Zylinders auch in den Auslassschlitz entweichen, ohne dass dadurch die Umwelt negativ beeinflusst wird. Bei herkömmlichen Zweitakt-Brennkraftmaschinen wird dem Kraftstoff Öl beigemischt. Dieses Gemisch aus Kraftstoff und Öl wird im Zylinder verbrannt und kann in Abhängigkeit vom Betriebszustand auch in den Auslassschlitz gelangen.By the stratified charge can be very cheap emissions be achieved. Because only air is sucked in, this can Air when flushing the cylinder also in the outlet slot escape without negatively affecting the environment. at conventional two-stroke internal combustion engine becomes the fuel oil added. This mixture of fuel and oil will burned in the cylinder and may vary depending on the operating condition also get into the outlet slot.

Dieser Effekt wird verhindert, wenn nur Luft angesaugt, der Kraftstoff direkt eingespritzt und die Schmierung des Motors über das Kurbelgehäuse erfolgt. Diese Faktoren bewirken, dass die hier beschriebene Zweitakt-Brennkraftmaschine zum effektiven Umweltschutz beiträgt.This Effect is prevented when only air sucked in the fuel directly injected and the lubrication of the engine over the crankcase takes place. These factors cause that the two-stroke internal combustion engine described here for the effective Environmental protection contributes.

Weiterhin entfallen die bei der Viertakt-Brennkraftmaschine erforderlichen Ventile und Nockenwellen. Weil diese Bauteile fehlen, werden die Verluste der Maschine reduziert, der Wirkungsgrad wird gesteigert und das Gewicht des Motors wird kleiner.Farther eliminates the required in the four-stroke internal combustion engine Valves and camshafts. Because these components are missing, the Losses of the machine reduced, the efficiency is increased and the weight of the engine gets smaller.

Wird dieser Motor z. B. in Kraftfahrzeugen eingebaut, dann werden diese Kraftfahrzeuge auf Grund der beschriebenen Eigenschaften nur einen sehr geringen Kraftstoffverbrauch haben. Daraus resultiert auch eine geringe Schadstoffbelastung der Umwelt. Die Schadstoffbelastung der Umwelt wird durch den Einsatz von einem Katalysator und gegebenenfalls von einem Rußpartikelfilter weiter reduziert.Becomes this engine z. B. installed in motor vehicles, then this Motor vehicles due to the described characteristics only a very have low fuel consumption. This also results in a low pollution of the environment. The pollutant load the environment is enhanced by the use of a catalyst and, where appropriate further reduced by a particulate filter.

Ferner wird bei einer Zweitakt-Brennkraftmaschine pro Zylinder im oberen Totpunkt des Kolbens ein Arbeitstakt ausgeführt. Dadurch wird die Leistung und das Drehmoment gegenüber einer Viertakt-Brennkraftmaschine gesteigert.Further is in a two-stroke internal combustion engine per cylinder in the upper Dead center of the piston executed a power stroke. Thereby is the performance and torque compared to a four-stroke internal combustion engine increased.

Die eingespritzte Kraftstoffmenge und der Zeitpunkt, in dem der Kraftstoff eingespritzt wird, ist vom Betriebszustand der Brennkraftmaschine abhängig. Mögliche Einflußgrößen sind: Motordrehzahl, Fahrpedalstellung, Ladedruck, Kühlmittel- und Lufttemperatur. Diese Einflussgrößen werden von einem Steuergerät erfasst, das dann die erforderliche Kraftstoffmenge und den Einspritzzeitpunkt errechnet.The injected fuel quantity and the time at which the fuel is injected, is the operating condition of the internal combustion engine dependent. Possible influencing factors are: engine speed, accelerator pedal position, boost pressure, coolant and air temperature. These factors will be detected by a control unit, which is then the required Calculated fuel quantity and injection timing.

Weil die angesaugte Luft hoch verdichtet und der Kraftstoff zum richtigen Zeitpunkt eingespritzt wird, erfordert die hier beschriebene Zweitakt-Brennkraftmaschine keine elektrische Zündanlage mit einer Zündkerze für die Zündung des Kraftstoff-Luftgemisches. Lediglich durch die hoch verdichtete Luft und durch die Kraftstoff-Direkteinspritzung unter hohem Druck zündet das Kraftstoff-Luftgemisch. Wie hoch die Luft im Zylinder komprimiert wird, hängt von dem verwendeten Kraftstoff ab.Because the intake air is highly compressed and the fuel is the right one Time is injected, requires the two-stroke internal combustion engine described here no electric ignition system with a spark plug for the ignition of the fuel-air mixture. Only by the highly compressed air and by the direct fuel injection under high pressure, the fuel-air mixture ignites. How high the air in the cylinder is compressed depends on the used Fuel off.

In DE 40 17 432 C2 wird eine Zweitakt-Brennkraftmaschine beschrieben, die neben dem Einspritzventil auch noch eine Zündkerze mit entsprechender Zündanlage benötigt.In DE 40 17 432 C2 a two-stroke internal combustion engine is described, which also requires a spark plug with appropriate ignition in addition to the injection valve.

Die für die Verbrennung erforderliche Luft der Zweitakt-Brennkraftmaschine wird über einen Verdichter dem Zylinder zugeführt. Der Verdichter kann mechanisch mit der Kurbelwelle gekoppelt sein. Es kann aber auch ein Verdichter verwendet werden, der seine Energie aus der kinetischen Energie der Abgase bezieht (Abgasturbolader).The required for the combustion air of the two-stroke internal combustion engine is fed to the cylinder via a compressor. The compressor may be mechanically coupled to the crankshaft. But it can also be used a compressor, its energy derived from the kinetic energy of the exhaust gases (exhaust gas turbocharger).

Diese Luft gelangt über das Ansaugrohr und die Spülschlitze in den Zylinder. Die Spülschlitze und die Auslasskanäle sind im Zylinder so angeordnet, dass eine gute Spülung des Zylinders erfolgt. Weiterhin muss darauf geachtet werden, dass der effektive Hub des Kolbens möglichst groß ist, und trotzdem noch genügend Zeit für eine gute Spülung des Zylinders vorhanden ist.These Air passes over the intake pipe and the scavenging slots in the cylinder. The scavenging slots and the outlet channels are arranged in the cylinder so that a good flush of the cylinder takes place. Furthermore, care must be taken that the effective stroke of the piston is as large as possible, and still enough time for a good one Flushing of the cylinder is present.

Der Ölabstreifring am unteren Ende des Kolbens verhindert, dass Öl in die einströmende Luft und in das ausströmende Abgas gelangt. Dieser Ölabstreifring bewegt sich zwischen der unteren Kante der Spülschlitze und dem unteren Ende des Zylinders.The oil scraper ring at the lower end of the piston prevents oil from entering the incoming air and into the effluent exhaust gas arrives. This oil scraper moves between the lower edge of the scavenging slots and the lower end of the Cylinder.

Diese Erfindung hat das Ziel, eine umweltfreundliche Zweitakt-Brennkraftmaschine der oben genannten Art zu entwickeln, so dass der Kraftstoffverbrauch gegenüber herkömmlichen Brennkraftmaschinen niedriger ist. Gleichzeitig soll das entstehende Abgas durch den Einsatz von einem Katalysator und wenn erforderlich auch von einem Rußpartikelfilter gereinigt werden.This invention aims to develop an environmentally friendly two-stroke internal combustion engine of the above type, so that the fuel consumption is lower compared to conventional internal combustion engines. At the same time, the resulting exhaust gas is due to the use of a catalyst and if necessary also be cleaned by a soot particle filter.

Anlageinvestment

Skizze einer Zweitakt-Brennkraftmaschine mit einer Kraftstoff-Direkteinspritzung und einem Verdichter für die zugeführte Luftsketch a two-stroke internal combustion engine with a direct fuel injection and a compressor for the supplied air

ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES 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 The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • - DE 4017432 C2 [0011] - DE 4017432 C2 [0011]

Claims (1)

Umweltfreundliche Zweitakt-Brennkraftmaschine mit einer Kraftstoff-Direkteinspritzung und einem Verdichter für die zugeführte Luft und mindestens einem Katalysator für Kraftfahrzeuge. In Abhängigkeit von dem verwendeten Kraftstoff und von den geforderten Grenzwerten werden die Abgase zusätzlich mit einem Rußpartikelfilter gereinigt. Diese Zweitakt-Brennkraftmaschine hat wenigstens einen Zylinder, mit einem Spülschlitz, der mit dem Ansaugrohr verbunden ist, einen Auslassschlitz und einen Injektor zur Kraftstoff-Direkteinspritzung unter hohem Druck in den Zylinder.Environmentally friendly two-stroke internal combustion engine with a direct fuel injection and a compressor for the supplied air and at least one catalyst for Motor vehicles. Depending on the fuel used and from the required limits, the exhaust gases are additional cleaned with a soot particle filter. This two-stroke internal combustion engine has at least one cylinder, with a scavenging slot, the is connected to the intake pipe, an outlet slot and a Injector for direct fuel injection under high pressure in the cylinder.
DE102008010781A 2008-02-14 2008-02-14 Two stroke internal combustion engine has fuel direct injection and compressor for supplying air and catalyzing unit for motor vehicles, and exhaust gases are cleaned additionally with soot particle filter Ceased DE102008010781A1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9328658B2 (en) 2011-06-30 2016-05-03 Arens Gmbh Metallbau & Bauschlosserei Fuel distribution block
US9341151B2 (en) 2011-06-30 2016-05-17 Arens Gmbh Metallbau & Bauschlosserei Fuel pump
US9371752B2 (en) 2011-06-30 2016-06-21 Arens Gmbh Metallbau & Bauschlosserei Rotary disk valve arrangement
DE102017003856A1 (en) * 2017-04-20 2018-10-25 Matthias Wagner New operating concept for operating a 2-stroke internal combustion engine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3712750A1 (en) * 1987-04-15 1988-11-10 Bayerische Motoren Werke Ag Two-stroke internal combustion engine, especially of reciprocating piston type
DE4133138A1 (en) * 1991-10-07 1992-02-27 Bernd Fischer Two=stroke diesel engine for vehicle or into machine - has particle filter or catalyser with regulation of purging air vol. dependent on engine loading
DE4017432C2 (en) 1989-05-30 1993-08-05 Fuji Jukogyo K.K., Tokio/Tokyo, Jp
DE4219236A1 (en) * 1992-06-12 1993-12-16 Christian Bartsch Two=stroke IC engine using Otto or Diesel cycle - has injection valve to inject into cylindrical hot rotating residual gas core
DE29810948U1 (en) * 1998-06-18 1999-07-22 Kern, Herbert, Dipl.-Ing., 86316 Friedberg Two-stroke internal combustion engine
DE60130136T2 (en) * 2000-11-29 2008-03-13 Kenneth W. Fullerton Cowans HIGH-PERFORMANCE ENGINE WITH VARIABLE COMPACTION RATIO AND VARIABLE LOADING (VCRC MOTOR)

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3712750A1 (en) * 1987-04-15 1988-11-10 Bayerische Motoren Werke Ag Two-stroke internal combustion engine, especially of reciprocating piston type
DE4017432C2 (en) 1989-05-30 1993-08-05 Fuji Jukogyo K.K., Tokio/Tokyo, Jp
DE4133138A1 (en) * 1991-10-07 1992-02-27 Bernd Fischer Two=stroke diesel engine for vehicle or into machine - has particle filter or catalyser with regulation of purging air vol. dependent on engine loading
DE4219236A1 (en) * 1992-06-12 1993-12-16 Christian Bartsch Two=stroke IC engine using Otto or Diesel cycle - has injection valve to inject into cylindrical hot rotating residual gas core
DE29810948U1 (en) * 1998-06-18 1999-07-22 Kern, Herbert, Dipl.-Ing., 86316 Friedberg Two-stroke internal combustion engine
DE60130136T2 (en) * 2000-11-29 2008-03-13 Kenneth W. Fullerton Cowans HIGH-PERFORMANCE ENGINE WITH VARIABLE COMPACTION RATIO AND VARIABLE LOADING (VCRC MOTOR)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9328658B2 (en) 2011-06-30 2016-05-03 Arens Gmbh Metallbau & Bauschlosserei Fuel distribution block
US9341151B2 (en) 2011-06-30 2016-05-17 Arens Gmbh Metallbau & Bauschlosserei Fuel pump
US9371752B2 (en) 2011-06-30 2016-06-21 Arens Gmbh Metallbau & Bauschlosserei Rotary disk valve arrangement
DE102017003856A1 (en) * 2017-04-20 2018-10-25 Matthias Wagner New operating concept for operating a 2-stroke internal combustion engine

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