DE1189786B - Rotary piston internal combustion engine - Google Patents

Rotary piston internal combustion engine

Info

Publication number
DE1189786B
DE1189786B DED38405A DED0038405A DE1189786B DE 1189786 B DE1189786 B DE 1189786B DE D38405 A DED38405 A DE D38405A DE D0038405 A DED0038405 A DE D0038405A DE 1189786 B DE1189786 B DE 1189786B
Authority
DE
Germany
Prior art keywords
internal combustion
combustion engine
rotary piston
piston
piston 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.)
Pending
Application number
DED38405A
Other languages
German (de)
Inventor
Dr-Ing Alfred Mueller
Dipl-Ing Robert Bayer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
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 Daimler Benz AG filed Critical Daimler Benz AG
Priority to DED38405A priority Critical patent/DE1189786B/en
Publication of DE1189786B publication Critical patent/DE1189786B/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B53/00Internal-combustion aspects of rotary-piston or oscillating-piston engines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B53/00Internal-combustion aspects of rotary-piston or oscillating-piston engines
    • F02B2053/005Wankel engines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2730/00Internal-combustion engines with pistons rotating or oscillating with relation to the housing
    • F02B2730/01Internal-combustion engines with pistons rotating or oscillating with relation to the housing with one or more pistons in the form of a disk or rotor rotating with relation to the housing; with annular working chamber
    • F02B2730/018Internal-combustion engines with pistons rotating or oscillating with relation to the housing with one or more pistons in the form of a disk or rotor rotating with relation to the housing; with annular working chamber with piston rotating around an axis passing through the gravity centre, this piston or the housing rotating at the same time around an axis parallel to the first axis
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Description

Rotationskolben-Brennkraftmaschine Die Erfindung bezieht sich auf eine Rotationskolben-Brennkraftmaschine, insbesondere in Trochoidenbauart, mit einem vieleckigen Kolben, der innerhalb eines aus Seitenteilen und einem Mantel gebildeten Gehäuses umlaufend auf einem Exzenter einer Exzenterwelle drehbar gelagert ist und bei dem die Stirnflächen mit in Achsrichtung vorzugsweise um einen geringen Betrag vorstehenden Anlaufflächen versehen sind.Rotary piston internal combustion engine The invention relates to a rotary piston internal combustion engine, in particular in trochoid design, with a polygonal piston, which is formed from side parts and a jacket within a Housing is rotatably mounted on an eccentric of an eccentric shaft and in which the end faces with in the axial direction preferably by a small amount protruding contact surfaces are provided.

Damit bei Brennkraftmaschinen dieser Art für den Kolben ein reibungsarmer Lauf durch schmierkeilbildende Elemente sichergestellt wird, ist bereits vorgeschlagen worden, an den Stirnflächen des Kolbens parallel dazu verlaufende Schmierflächen und zusätzlich noch Keilflächen vorzusehen, wobei die Steigungsrichtungen der Keilflächen und/oder der Kanten der Schmierflächen so angeordnet werden können, daß das Schmieröl in gewünschter Weise nach innen oder nach außen gefördert wird.So that in internal combustion engines of this type a low-friction piston for the piston Run is ensured by wedge-forming elements is already proposed have been, on the end faces of the piston parallel lubricating surfaces and additionally to provide wedge surfaces, the directions of inclination of the wedge surfaces and / or the edges of the lubricating surfaces can be arranged so that the lubricating oil is promoted inward or outward as desired.

Die Erfindung macht es sich zur Aufgabe, einen reibungsarmen Lauf und die Förderung von Schmieröl in einer bestimmten Richtung mit gegenüber den bereits vorgeschlagenen Maßnahmen einfacheren konstruktiven und in der Fertigung leicht verwirklichbaren Mitteln zu erzielen, und in Lösung dieser Aufgabe besteht die Erfindung darin, die Anlaufflächen ringförmig auszubilden und mit Ölrückfördernuten zu versehen.The invention makes it its task to run with little friction and the promotion of lubricating oil in a certain direction with compared to the already proposed measures simpler constructive and easy to manufacture Realizable means to achieve, and the solution to this problem consists of the invention in designing the contact surfaces in the shape of a ring and providing them with oil return grooves.

In Ausgestaltung des Erfindungsgegenstandes können die Anlaufflächen an Anlaufscheiben angeordnet sein, deren äußerer Durchmesser kleiner ist als der Durchmesser der inneren Axialdichtungen. Durch den kleinen Reibradius und die gute Schmierung der innerhalb der inneren Axialdichtungen liegenden Anlaufflächen wird die Reibung wesentlich gemindert. Das enge Spiel zwischen den Seitenteilen des Gehäuses und den Anlaufflächen schützt die inneren Axialdichtungen vor direkter Beaufschlagung mit Lageröl oder Kühlöl. Die Ölrückfördernuten dienen hauptsächlich dazu, das nach radial außen strebende Öl nach innen zurückzufördern, sie tragen jedoch auch zum Aufbau eines Schmierfilmes an den Anlaufflächen bei.In an embodiment of the subject matter of the invention, the contact surfaces be arranged on thrust washers, the outer diameter of which is smaller than the Inner axial seal diameter. Due to the small friction radius and the good Lubrication of the contact surfaces lying within the inner axial seals is the friction is significantly reduced. The tight play between the side panels of the case and the contact surfaces protect the inner axial seals from direct exposure with bearing oil or cooling oil. The oil return grooves are mainly used to after To convey oil that strives radially outwards back inwards, but they also contribute to the Build-up of a lubricating film on the contact surfaces.

In der Zeichnung, in welcher der Gegenstand der Erfindung in einem Ausführungsbeispiel schematisch dargestellt ist, zeigt F i g. 1 einen Schnitt durch einen dreieckigen Kolben einer Rotationskolben-Brennkraftmaschine und F i g. 2 eine Ansicht auf den Kolben in Pfeilrichtung 1I aus F i g. 1. An den Stirnwänden 1 des Kolbens 2 sind im Bereich der Lagerbohrung 3 ringförmige Anlaufscheiben 4 befestigt. Während die radial inneren Ringflächen 5 der Anlaufscheiben 4, die zu Befestigungszwecken dienen, in der Ebene der Stirnflächen der Stirnwände 1 liegen, stehen die radial äußeren Ringflächen 6 um ein geringes Maß in axialer Richtung über die Stirnflächen der Stirnwände 1 vor. In den Ringflächen 6 der Anlaufscheiben 4 sind Ölrückfördernuten 7 angeordnet, die mit Bezug auf die Drehrichtung 8 des Kolbens derart angestellt sind, daß sie nach radial außen strebendes Öl nach innen gegen die Lagerung des Kolbens zu zurückfördern. Der äußere Durchmesser jeder Anlaufscheibe 4 ist kleiner als der Durchmesser der nicht dargestellten inneren AxialdichtUngen, die an den Stirnwänden 1 angeordnet sind.In the drawing, in which the subject matter of the invention is shown schematically in an exemplary embodiment, FIG. 1 shows a section through a triangular piston of a rotary piston internal combustion engine and FIG. 2 shows a view of the piston in the direction of arrow 1I from FIG. 1. On the end walls 1 of the piston 2, 3 ring-shaped thrust washers 4 are attached in the area of the bearing bore. While the radially inner annular surfaces 5 of the thrust washers 4, which are used for fastening purposes, lie in the plane of the end surfaces of the end walls 1 , the radially outer annular surfaces 6 protrude slightly beyond the end surfaces of the end walls 1 in the axial direction. In the annular surfaces 6 of the thrust washers 4, oil return grooves 7 are arranged, which are set with respect to the direction of rotation 8 of the piston in such a way that they return oil tending radially outwards towards the inside against the bearing of the piston. The outer diameter of each thrust washer 4 is smaller than the diameter of the inner axial seals, not shown, which are arranged on the end walls 1.

Claims (1)

Patentansprüche: 1. Rotationskolben-Brennkraftmaschine, insbesondere in Trochoidenbauart, mit einem vieleckigen Kolben, der innerhalb eines aus Seitenteilen und einem Mantel gebildeten Gehäuses umlaufend auf einem Exzenter einer Exzenterwelle drehbar gelagert ist und bei dem die Stirnflächen mit in Achsrichtung vorzugsweise um einen geringen Betrag vorstehenden Anlaufflächen versehen sind, dadurch gekennzeichnet, daß die Anlaufflächen ringförmig ausgebildet und mit ölrückfördernuten versehen sind. z. Brennkraftmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Anlaufflächen an Anlaufscheiben angeordnet sind, deren äußerer Durchmesser kleiner ist als der Durchmesser der inneren Axialdichtungen. In Betracht gezogene ältere Patente: Deutsches Patent Nr. 1155 939.Claims: 1. Rotary piston internal combustion engine, in particular in trochoid design, with a polygonal piston, which is made of side parts within one and a casing formed housing circumferentially on an eccentric of an eccentric shaft is rotatably mounted and in which the end faces preferably with in the axial direction run-on surfaces protruding by a small amount are provided, characterized in that that the contact surfaces are ring-shaped and provided with oil return grooves are. z. Internal combustion engine according to Claim 1, characterized in that the contact surfaces are arranged on thrust washers, the outer diameter of which is smaller than the Inner axial seal diameter. Older Patents Considered: German U.S. Patent No. 1,155,939.
DED38405A 1962-03-20 1962-03-20 Rotary piston internal combustion engine Pending DE1189786B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED38405A DE1189786B (en) 1962-03-20 1962-03-20 Rotary piston internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED38405A DE1189786B (en) 1962-03-20 1962-03-20 Rotary piston internal combustion engine

Publications (1)

Publication Number Publication Date
DE1189786B true DE1189786B (en) 1965-03-25

Family

ID=7044082

Family Applications (1)

Application Number Title Priority Date Filing Date
DED38405A Pending DE1189786B (en) 1962-03-20 1962-03-20 Rotary piston internal combustion engine

Country Status (1)

Country Link
DE (1) DE1189786B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938917A (en) * 1973-07-17 1976-02-17 Toyota Jidosha Kogyo Kabushiki Kaisha Linear oil seal means principally intended to obtain an oil scraping effect
US3945776A (en) * 1973-12-29 1976-03-23 Toyota Jidosha Kogyo Kabushiki Kaisha Structure for preventing oil leakage in a rotary engine
US4242065A (en) * 1977-11-19 1980-12-30 Robert Bosch Gmbh Sliding vane compressor with end face inserts or rotor
US4734020A (en) * 1985-12-16 1988-03-29 Mitsubishi Denki Kabushiki Kaisha Scroll type compressor with spiral oil feeding grooves in thrust bearing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938917A (en) * 1973-07-17 1976-02-17 Toyota Jidosha Kogyo Kabushiki Kaisha Linear oil seal means principally intended to obtain an oil scraping effect
US3945776A (en) * 1973-12-29 1976-03-23 Toyota Jidosha Kogyo Kabushiki Kaisha Structure for preventing oil leakage in a rotary engine
US4242065A (en) * 1977-11-19 1980-12-30 Robert Bosch Gmbh Sliding vane compressor with end face inserts or rotor
US4734020A (en) * 1985-12-16 1988-03-29 Mitsubishi Denki Kabushiki Kaisha Scroll type compressor with spiral oil feeding grooves in thrust bearing

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