DE3800606A1 - Two-stroke internal combustion engine with an oscillating piston divided cylinder arrangement serving for the delivery of fresh gas or for secondary expansion of the combustion gases - Google Patents

Two-stroke internal combustion engine with an oscillating piston divided cylinder arrangement serving for the delivery of fresh gas or for secondary expansion of the combustion gases

Info

Publication number
DE3800606A1
DE3800606A1 DE19883800606 DE3800606A DE3800606A1 DE 3800606 A1 DE3800606 A1 DE 3800606A1 DE 19883800606 DE19883800606 DE 19883800606 DE 3800606 A DE3800606 A DE 3800606A DE 3800606 A1 DE3800606 A1 DE 3800606A1
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DE
Germany
Prior art keywords
cylinders
cylinder
internal combustion
combustion engine
stroke internal
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Withdrawn
Application number
DE19883800606
Other languages
German (de)
Inventor
Hermann Dr Ing Klaue
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Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19883800606 priority Critical patent/DE3800606A1/en
Publication of DE3800606A1 publication Critical patent/DE3800606A1/en
Withdrawn legal-status Critical Current

Links

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
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/02—Engines with reciprocating-piston pumps; Engines with crankcase pumps
    • F02B33/06—Engines with reciprocating-piston pumps; Engines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L7/00—Rotary or oscillatory slide valve-gear or valve arrangements
    • F01L7/12—Rotary or oscillatory slide valve-gear or valve arrangements specially for two-stroke engines
    • 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
    • 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
    • F02B41/00—Engines characterised by special means for improving conversion of heat or pressure energy into mechanical power
    • F02B41/02—Engines with prolonged expansion
    • F02B41/06—Engines with prolonged expansion in compound cylinders
    • F02B41/08—Two-stroke compound engines
    • 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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The invention relates to a two-stroke internal combustion engine with divided cylinders fitted at the side of the working cylinder and serving for the delivery of fresh gas or for secondary expansion of the combustion gases, which cylinders have oscillating pistons, the axes of which run parallel to the crankshaft centre axis and about which the pistons are made to oscillate, driven by the crankshaft. The oscillating pistons have cylindrical enlargements which are supported in bores of cylinders cast together with the working cylinder. The divided cylinder running surfaces of the oscillating pistons, on the other hand, are arranged in a single or multipart housing enclosing the working cylinder or cylinders. This measure simplifies the two-stroke internal combustion engine of the type with divided cylinders arranged at the side of the working cylinders. This makes manufacturing easier. For example, the housing having the running surfaces for the oscillating pistons and simultaneously designed as crank case can be manufactured from die-cast lightweight alloy, in which the running surfaces for the oscillating pistons are produced at the same time in the casting process without finish machining.

Description

Es sind Zweitaktbrennkraftmaschinen mit einer zum Fördern von Frischgas oder zur Zweitdehnung der Brenngase dienenden Schwing­ kolben-Teilzylinder-Anordnung bekannt. Ottomotoren dieser Bau­ art werden mit Einspritzung in den Kanal zwischen Schwingkolben- Teilzylinder und Arbeitszylinder ausgerüstet und jedem von zwei in Reihe angeordneten Arbeitszylindern auf jeder Seite ein durchgehender Schwingkolben zum Spülen und Aufladen zugeordnet. Ferner ist eine Zweitaktbrennkraftmaschine mit beidseitig vor­ gesehener Teilzylinderanordnung bekannt, bei der die eine Seite zur Frischgasbeschickung und die andere Seite zur Zweitdehnung der Brenngase dient.They are two-stroke internal combustion engines with one for conveying Fresh gas or vibration serving for the secondary expansion of the fuel gases piston-partial cylinder arrangement known. Otto engines of this construction are injected into the channel between the oscillating piston Partial cylinder and working cylinder equipped and each of two working cylinders arranged in a row on each side Continuous oscillating piston assigned for rinsing and charging. Furthermore, a two-stroke internal combustion engine is on both sides Seen partial cylinder arrangement known in which one side for fresh gas feeding and the other side for secondary expansion the fuel gases.

Vorliegende Erfindung betrifft beide Maschinenausführungen und hat sich zur Aufgabe gesetzt, diese dahingehend weiterzubilden, daß die Herstellung vereinfacht und die Präzision der den Stoffwechsel der Maschine steuernden Schwingkolben verbessert wird.The present invention relates to both machine designs and has set itself the task of further developing these that simplifies manufacture and the precision of the Improved metabolism of the oscillating piston controlling the machine becomes.

Die erfinderische Lösung dieser Aufgabe ist im kennzeichnenden Teil des Hauptanspruchs beschrieben.The inventive solution to this problem is characteristic Part of the main claim described.

Durch Anwendung der Lehre der Erfindung ist gewährleistet, daß infolge Lagerung des die Steuerung der Maschine vornehmenden Teiles des Schwingkolbens am Arbeitszylinder die Steuerzeiten eingehalten und Gasverluste vermieden werden. Durch Anordnung der Teilzylinder-Lauffläche in einem getrennt bearbeiteten oder druckgegossenen Gehäuseteil ist die Herstellung verein­ facht. Außerdem können dadurch für Arbeitszylinder- und Ge­ häuseteil unterschiedliche, der Funktion angepaßte Werkstoffe Verwendung finden. So kann der Hauptzylinderteil aus Gauguß oder einem übereutektischen GAlSiMg und das Gehäuseteil aus einem anderen Leichtmetall beispielsweise Magnesium gegossen und die Teilzylinder-Lauffläche durch Aufbringen einer Teflon­ schicht verschleißfest gestaltet werden.Applying the teaching of the invention ensures that due to storage of the machine controlling the machine Part of the oscillating piston on the working cylinder the timing adhered to and gas losses avoided. By order the part cylinder tread in a separately machined or die-cast housing part, the manufacture is united fold. It can also be used for working cylinders and Ge different parts of the housing, adapted to the function Find use. So the master cylinder part made of cast iron or a hypereutectic GAlSiMg and the housing part cast another light metal, for example magnesium and the partial cylinder tread by applying a Teflon layer can be made wear-resistant.

In den Abbildungen ist ein Ausführungsbeispiel der Erfindung dargestellt. Es handelt sich um eine Zweizylinder-Otto-Maschine, welche inIn the figures is an embodiment of the invention shown. It is a two-cylinder Otto engine, what a

Fig. 1 im in Fig. 3 mit C-D gekennzeichneten Querschnitt durch den ersten Zylinder, in Fig. 1 in the cross-section marked CD in Fig. 3 through the first cylinder, in

Fig. 2 im durch die Zylindermitten führenden Längsschnitt und schließlich in Fig. 2 in the longitudinal section leading through the cylinder centers and finally in

Fig. 3 im in Fig. 1 mit A-B gekennzeichneten Querschnitt durch beide Zylinder dar­ gestellt ist. Fig. 3 in AB in Fig. 1 marked cross section through both cylinders is provided.

In den Abbildungen ist mit 1 der aus zwei Zylindern bestehende Zylinderblock gekennzeichnet, dessen Zylinder 1 1 und 1 2 mit den Zylinderköpfen 1 3 und 1 4 zusammengegossen ist und an den Zylinderfortsätzen 1 5 bis 1 8 die oberen Lagerhalbschalten 1 9 bis 1 12 trägt. Durch Schrauben 1 13 tragen die Zylinderfortsät­ ze die Lagerdeckel 1 14 bis 1 17, an denen die unteren Lagerscha­ len befestigt sind und zusammen mit den oberen Lagerhalbschalen die im vorliegenden Beispiel als Exzenterwelle 2 ausgebildete Motorwelle tragen. Die Exzenterwelle weist drei im Durchmesser gleiche Exzenter 2 1 bis 2 3 sind die ungeteilten Pleuel 3 1 und 3 2, welche mit den Kolben 4 1 und 4 2 verbunden sind, gelagert und auf dem Exzenter 2 2 das ebenfalls ungeteilte Schwingkolbenpleuel 5 3.In the figures, 1 denotes the cylinder block consisting of two cylinders, the cylinders 1 1 and 1 2 of which are cast together with the cylinder heads 1 3 and 1 4 and carry the upper half-gear shifts 1 9 to 1 12 on the cylinder extensions 1 5 to 1 8 . Screws 1 13 carry the cylinder extensions to the bearing caps 1 14 to 1 17 , to which the lower bearing shells are fastened and, together with the upper bearing half-shells, carry the motor shaft designed as an eccentric shaft 2 in the present example. The eccentric shaft has three eccentrics 2 1 to 2 3 with the same diameter, the undivided connecting rods 3 1 and 3 2 , which are connected to the pistons 4 1 and 4 2 , are mounted and on the eccentric 2 2 the likewise undivided oscillating piston connecting rod 5 3 .

Die längs auf beiden Zylinderseiten angeordneten Schwingkolben 5 1 und 5 2 sind durch eine zwischen den Arbeitszylindern hindurch­ geführte Stange 5 4 miteinander verbunden. Der Schwingkolben 5 2 wird also vom Exzenter 2 2 über das Schwingkolbenpleuel 5 3 sowie die Stange 5 4 angetrieben, während der Schwingkolben 5 1 direkt durch das Pleuel 5 3 bewegt wird. Die zylindrischen Ver­ dickungen der Schwingkolben 5 11 und 5 21, welche den Einlaß­ beginn steuern, sind an durchgehend gebohrten Zylindern 1 18 und 1 19 des Zylinderblocks 1 gelagert. Beim Zusammensetzen des Motors werden die beiden Schwingkolben mit ihren zylindrischen Ver­ dickungen in die Bohrungen 1 21 und 1 22 der Zylinder 1 18 und 1 19 geschoben. Die Abdeckungen der Stirnseiten der Schwingkol­ ben übernimmt das als getrenntes Gußstück ausgebildete Kurbel­ gehäuse 6, welches mit dem Zylinderblock 1 durch Schrauben 7 verbunden ist. Es weist die Teilzylinderflächen 6 1 und 6 2 auf, auf denen die Dichtungsstege der Schwingkolben 5 1 und 5 2 gleiten. Längs werden die ebenfalls mit Dichtungsstegen versehenen Stirnseiten 5 23 bis 5 26 durch die Kurbelgehäuse­ wände abgestützt. Damit das Einsetzen des vorher einschließ­ lich Schwingkolben zusammengesetzten Motorblocks in das Kurbelgehäuse möglich ist, darf die Länge der Exzenterwelle die lichte Weite des Kurbelgehäuses nicht überschreiten. In Fig. 2 ist dies verdeutlicht. Zur kraftschlüssigen Verbindung des Kurbelgehäuses 6, welches bei einem Kraftwagen-Antriebs­ block auch Schaltgetriebe und Achsantrieb umschließt, mit dem Motorblock 1 sind innen am Kurbelgehäuse Fortsätze 6 3 und 6 4 angegossen, deren Stirnflächen sich an den Zylinderfort­ sätzen 1 5 bis 1 8 abstützen.The oscillating pistons 5 1 and 5 2 arranged longitudinally on both cylinder sides are connected to one another by a rod 5 4 guided between the working cylinders. The oscillating piston 5 2 is thus driven by the eccentric 2 2 via the oscillating piston connecting rod 5 3 and the rod 5 4 , while the oscillating piston 5 1 is moved directly by the connecting rod 5 3 . The cylindrical Ver thickening of the oscillating piston 5 11 and 5 21 , which control the inlet start, are mounted on through-drilled cylinders 1 18 and 1 19 of the cylinder block 1 . When assembling the engine, the two oscillating pistons with their cylindrical thicknesses are pushed into the bores 1 21 and 1 22 of the cylinders 1 18 and 1 19 . The covers of the end faces of the Schwingkol ben takes over the crank housing 6 , which is formed as a separate casting and is connected to the cylinder block 1 by screws 7 . It has the partial cylinder surfaces 6 1 and 6 2 on which the sealing webs of the oscillating pistons 5 1 and 5 2 slide. Longitudinally, the end faces 5 23 to 5 26, also provided with sealing webs, are supported by the crankcase walls. The length of the eccentric shaft must not exceed the clear width of the crankcase so that it is possible to insert the previously assembled engine block into the crankcase. This is illustrated in FIG. 2. For the non-positive connection of the crankcase 6 , which also includes a manual transmission and axle drive block in a motor vehicle drive block, with the engine block 1 extensions 6 3 and 6 4 are cast on the inside of the crankcase, the end faces of which are supported on the cylinder extensions 1 5 to 1 8 .

Die Abschlußwände 1 23 und 1 24 der Schwingkolbenladeeinrich­ tungen sind Bestandteile des Motorblocks 1. In sie münden die Saugkanäle 1 20 ein, in denen die Membranen 1 25 untergebracht sind, welche den Abschluß der betreffenden Ladeeinrichtung beim Verdichtungshub besorgen. Bei dem Schnittverlauf C-D ist der Übersichtlichkeit halber nur der eine Saugkanal wieder­ gegeben. Die Stoffwechselkanäle der Maschine sind im übrigen in Fig. 3 wiedergegeben. Sie sind für beide Zylinder gleich. Die beiden Einspritzdüsen 8 und 9 sind gegenüberliegend in der Mitte des Blocks angeordnet. Die sich an den Motorstirn­ seiten gegenüberliegenden Auslaßkanäle 1 25 und 1 26 sind so angeordnet, daß der einströmende Frischgasstrom, in den ab kurz vor Auslaßabschluß der Brennstoff eingespritzt wird, über die Auslaßkanäle hinwegführt. Die Zuführung der Luft zum Motor erfolgt vom Filter 10 aus über die Rohrleitungen 10 und 11.The end walls 1 23 and 1 24 of the Schwingkolbenladeeinrich lines are part of the engine block 1st In it the suction channels 1 20 open, in which the membranes 1 25 are housed, which ensure the completion of the loading device in question during the compression stroke. For the sake of clarity, only one suction channel is given again in the course of the CD . The metabolic channels of the machine are otherwise shown in Fig. 3. They are the same for both cylinders. The two injection nozzles 8 and 9 are arranged opposite one another in the middle of the block. The opposite side of the engine front outlet channels 1 25 and 1 26 are arranged so that the inflowing fresh gas stream, into which the fuel is injected shortly before the end of the outlet, leads over the outlet channels. The air is supplied to the engine from the filter 10 via the pipes 10 and 11 .

Claims (2)

1. Zweitaktbrennkraftmaschine mit einer zum Fördern von Frisch­ gas oder zur Zweitdehnung der Brenngase dienenden Schwing­ kolben-Teilzylinderanordnung mit seitlich des Arbeitszylin­ ders parallel zur Kurbelwellenmittenachse angeordnetem, bei Verwendung zum Fördern von Frischgas zwei Zylindern zu­ geordneten, bei Verwendung zur Ausnutzung einer Zweitdehnung der Brenngase jedem Zylinder zugeordneten Schwingkolben, welcher sich in einem Teilzylinder bewegt, dadurch gekennzeichnet, daß der Schwingkolben (5 1, 5 2) mit seiner zylindrischen Ver­ dickung (5 11, 5 22) in der Bohrung (1 21, 1 22) eines mit dem Arbeitszylinder (1 1, 1 2) zusammengegossenen Zylinders (1 18, 1 19) gelagert ist, während die Teilzylinder-Lauffläche (6 1, 6 2) in einem ein- oder mehrteiligen, die ober den Arbeits­ zylinder (1 1, 1 2) umfassenden Gehäuse (6) angeordnet ist.1. Two-stroke internal combustion engine with a serving for conveying fresh gas or for the second expansion of the fuel gas oscillating piston partial cylinder arrangement with the side of the Arbeitszyliners parallel to the crankshaft center axis, assigned to two cylinders when used for conveying fresh gas, each used to utilize a second expansion of the fuel gases Cylinder-assigned oscillating piston, which moves in a partial cylinder, characterized in that the oscillating piston ( 5 1 , 5 2 ) with its cylindrical thickness ( 5 11 , 5 22 ) in the bore ( 1 21 , 1 22 ) one with the working cylinder ( 1 1 , 1 2 ) cast cylinder ( 1 18 , 1 19 ) is mounted, while the partial cylinder tread ( 6 1 , 6 2 ) in one or more parts, the top of the working cylinder ( 1 1 , 1 2 ) comprehensive housing ( 6 ) is arranged. 2. Zweitaktbrennkraftmaschine, nach Anspruch 1, dadurch gekenn­ zeichnet, daß auch die Stirnseiten (5 23 bis 5 26) des oder der Schwingkolben (5 1, 5 2) durch das die oder den Arbeits­ zylinder (1) umfassende Gehäuse (6) abgedeckt werden.2. Two-stroke internal combustion engine, according to claim 1, characterized in that the end faces ( 5 23 to 5 26 ) of the or the oscillating piston ( 5 1 , 5 2 ) by the or the working cylinder ( 1 ) comprehensive housing ( 6 ) covered will.
DE19883800606 1988-01-12 1988-01-12 Two-stroke internal combustion engine with an oscillating piston divided cylinder arrangement serving for the delivery of fresh gas or for secondary expansion of the combustion gases Withdrawn DE3800606A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19883800606 DE3800606A1 (en) 1988-01-12 1988-01-12 Two-stroke internal combustion engine with an oscillating piston divided cylinder arrangement serving for the delivery of fresh gas or for secondary expansion of the combustion gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19883800606 DE3800606A1 (en) 1988-01-12 1988-01-12 Two-stroke internal combustion engine with an oscillating piston divided cylinder arrangement serving for the delivery of fresh gas or for secondary expansion of the combustion gases

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DE3800606A1 true DE3800606A1 (en) 1989-07-20

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806689A1 (en) * 1988-03-02 1989-09-14 Klaue Hermann Internal combustion engine with applied ignition
DE3808342A1 (en) * 1988-03-12 1989-09-21 Klaue Hermann Two-stroke internal combustion engine with self-ignition and secondary expansion
DE4023372A1 (en) * 1990-07-23 1992-01-30 Klaue Hermann Double expansion two=stroke diesel IC engine - has compression and expansion chamber of rectangular cross=section
US6842978B2 (en) * 2001-08-17 2005-01-18 Electrolux Home Products, Inc. Cylinder head and crankcase manufacturing and assembly techniques

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806689A1 (en) * 1988-03-02 1989-09-14 Klaue Hermann Internal combustion engine with applied ignition
DE3808342A1 (en) * 1988-03-12 1989-09-21 Klaue Hermann Two-stroke internal combustion engine with self-ignition and secondary expansion
DE4023372A1 (en) * 1990-07-23 1992-01-30 Klaue Hermann Double expansion two=stroke diesel IC engine - has compression and expansion chamber of rectangular cross=section
US6842978B2 (en) * 2001-08-17 2005-01-18 Electrolux Home Products, Inc. Cylinder head and crankcase manufacturing and assembly techniques

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