EP0034958B1 - Motor mit Drehkolben, die eine periodisch veränderliche Geschwindigkeit haben, und Antriebsmitteln - Google Patents

Motor mit Drehkolben, die eine periodisch veränderliche Geschwindigkeit haben, und Antriebsmitteln Download PDF

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Publication number
EP0034958B1
EP0034958B1 EP81400130A EP81400130A EP0034958B1 EP 0034958 B1 EP0034958 B1 EP 0034958B1 EP 81400130 A EP81400130 A EP 81400130A EP 81400130 A EP81400130 A EP 81400130A EP 0034958 B1 EP0034958 B1 EP 0034958B1
Authority
EP
European Patent Office
Prior art keywords
pistons
engine
pinions
arms
casing
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
Application number
EP81400130A
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English (en)
French (fr)
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EP0034958A3 (en
EP0034958A2 (de
Inventor
Claude Charles Félix Menioux
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.)
Safran Aircraft Engines SAS
Original Assignee
Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
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Publication date
Application filed by Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA filed Critical Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
Publication of EP0034958A2 publication Critical patent/EP0034958A2/de
Publication of EP0034958A3 publication Critical patent/EP0034958A3/fr
Application granted granted Critical
Publication of EP0034958B1 publication Critical patent/EP0034958B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/02—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F01C1/063—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents with coaxially-mounted members having continuously-changing circumferential spacing between them
    • F01C1/07—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents with coaxially-mounted members having continuously-changing circumferential spacing between them having crankshaft-and-connecting-rod type drive
    • 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
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • 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
    • F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines

Definitions

  • the low consumption of positive displacement motors is also due to the fact that the effective temperature to be taken into consideration in the cycle is practically very close to the stoichiometric temperature.
  • This temperature is acceptable for neighboring parts (cylinder, cylinder head and pistons), in particular because this temperature is a maximum temperature reached during a very small fraction of the duration of the complete cycle, so that the parts, mobile or fixed, moreover, do not have time to warm up during this fraction of the time and would tend, even in the absence of cooling, to take a much lower temperature.
  • a conventional diesel engine notably includes a connecting rod which transmits the forces coming either from the gases on the crankshaft (this is the engine force during the expansion), or the force of the crankshaft on the gases (this is the force for the compression during this phase).
  • these forces are offset in the time and it is necessary to calculate the resistance of the parts (connecting rods, crankshaft crankpin, etc.) for the maximum forces without possible compensation, therefore to size them for these maximum forces although in fact they are successively directed in opposite direction l of each other.
  • valves are generally housed in the cylinder head (noting, moreover, that their control by camshaft, if necessary rocker rods, rocker arms themselves, also increases the complication, the bulk and the mass).
  • the cylinder head must also include the ignition system and / or the injection system, the area available for the valves is generally a limiting criterion for the engine rotation speed.
  • the throttling produced by the valves is, moreover, one of the causes of the drop in power which occurs at high speed of rotation of such engines.
  • Volumetric motors of the prior art therefore have, due to the difficulty of supply, due to the impossibility of increasing the sections of the intake valves, a large mass per unit of power.
  • Rotary volumetric motors comprising a fixed casing delimiting an annular chamber in which pistons are rotatably mounted in the same direction, which are diametrically connected in pairs by means of an arm and driven by a cyclic speed variation generating a variation in volume of the space delimited by the radial faces of the pistons, said spaces between the pistons constituting chambers of an engine operating in a four-stroke cycle.
  • US-A-2,349,848 describes a rotary positive displacement motor of this type in which the annular space in which the pistons move is delimited by the casing and a rotary crown presenting lights in which the arms are engaged and which allow an angular movement of the arms for bringing the pistons closer and further apart, said crown constituting or being connected to the output drive shaft.
  • the rotary crown is connected by a transmission means to the shafts coaxial with the axis of the engine which are integral with the arms carrying the pistons, this transmission means being laterally offset with respect to the arm-piston assembly.
  • this transmission means being laterally offset with respect to the arm-piston assembly.
  • the motor shaft can be either on one side or the other of the rotary positive displacement motor.
  • Curve 31 represents the evolution over the cycle of the engine torque which increases, passes through a maximum, decreases, cancels, reverses (becomes resistant during compression), becomes zero again and this twice per revolution.
  • a motor is used in which are arranged along the same axis and symmetrically two modules offset by 90 ° taking as a reference the angle of rotation of the pinions.
  • each module has two rod-crank systems connecting each pair of pistons to each pinion, but in the combination of the two modules, the two pinions are common and the two rod-crank systems coming from each module and actuating the same pinion are offset by 90 ° (taking as a reference the angle of rotation of the pinions).
  • FIG. 5 a diagram with the same coordinates as in FIG. 4 and on which are represented two curves 31 and 32 which are offset by 90 ° and which represent the evolution of the driving torques applied to the pinions of a pair of associated motors .
  • a rotary volumetric motor which comprises a fixed outer casing 1 limiting an annular space, on the one hand peripherally, on the other hand on its front and rear faces.
  • the housing is shown in a single element in the drawings, for the purpose of simplification, but, of course, it includes the number of elements necessary to allow mounting.
  • a rotary crown 2 which internally delimits this annular space in which move in rotation in the direction of the arrow F four pistons 3, 3a and 4, 4a.
  • the pistons 3, 3a are symmetrical and connected by means of an arm 5 and the pistons 4, 4a are also symmetrical and connected in the same way by an arm 6.
  • the arms 5 and 6 are respectively made integral with the shafts 27 and 28 by a key (not shown) or any other known means.
  • the annular space in which the pistons move can have a quadrangular cross section as shown in fig. 2, or circular, for example in the simplest cases, or any combination of circular sectors and line segments in particular.
  • the radial faces 7, 8 of the adjacent pistons delimit between them spaces 9, 10, 11, 12 of variable volume which correspond to the chambers of an engine operating according to a four-stroke cycle.
  • the assembly constituted by the crown 2 and the pistons 3, 3a and 4, 4a is driven according to the same general rotary movement according to the arrow F, while the pistons 3, 3a and 4, 4a are further animated, as will be explained below, of a variation in cyclic speed corresponding to an acceleration and a deceleration movement of each arm 5, 6 which causes an approximation and an alternative distancing of the pistons 3, 3a and 4, 4a in order to obtain a variation cyclic volume of spaces or rooms 9, 10, 11, 12 allowing a four-stroke cycle to be carried out.
  • the chamber 9 is in the intake phase
  • the chamber 10 in the compression phase the chamber 11 in the expansion phase
  • the chamber 12 in the exhaust phase In the position shown in fig. 1, the chamber 9 is in the intake phase, the chamber 10 in the compression phase, the chamber 11 in the expansion phase and the chamber 12 in the exhaust phase.
  • the ignition of the fuel mixture occurs when one of the chambers, in particular the chamber 10, is opposite the spark plug 13 which is mounted on the casing 1. Note that, in the case where the engine would operate according to a Diesel cycle, the spark plug 13 is replaced by a fuel injector.
  • the casing 1 also has a light 14 for the admission of the combustible gas mixture in the case of an ignition engine or fresh air in the case of a diesel cycle and a light 15 for the exhaust of the gases. burned.
  • the rotor ring 2 has slots 16, 16a and 17, 17a.
  • FIG. 1 shows a single seal at each end of the pistons but of course there may be several in series.
  • the joint plane between the fixed part 1 and the rotary crown 2 is located at the mean diameter of the torus.
  • the outer casing may have three faces and sealing segments are placed in the connection zone of the inner rotary ring 2.
  • the angular movement of the pistons and their developed length are determined by the choice of the volumetric compression ratio to be achieved. We deduce the necessary dimension of the lights 16, 16a, 17, 17a in the crown 2 for the displacement of the pistons.
  • the intake and exhaust ports can advantageously have the developed length corresponding to the maximum spacing of the pistons and the maximum width compatible with the casing.
  • the mechanical power produced at the pistons is recovered on a shaft linked to the crown 2, by a "squirrel cage" 29, by means of a transmission device which comprises a fixed outer crown 20 (see fig. 2 and 3) having an internal toothing 21 with which mesh two pinions 22, 22a having a number of teeth equal to half that of the crown 20; these pinions 22, 22a are located in different planes and they do not mesh with each other.
  • crank pin 30, 30a an eccentric axis 24, 24a on which is articulated one of the ends of a connecting rod 25, 25a whose other end is articulated on another crank pin 26, 26a.
  • the crank pins 26, 26a are respectively integral with the shafts 27, 28 which carry the arms 5 and 6 driven by the pistons 3, 3a and 4,4a.
  • each pinion 22, 22a is driven by the corresponding connecting rod 25, 25a in the direction of the arrow F1.
  • the axes of the pinions being integral with the crown 2, and due to the engagement of the pinions 22, 22a on the fixed outer crown 20, the crown 2 rotates according to the arrow F2 (therefore in the opposite direction of rotation of the pinions 22 and 22a on themselves), as well as the output shaft to which the engine force is applied.
  • the articulated system of the three-bar type constituted by the crank pins 30, 30a, the connecting rods 25, 25a and the crank pins 26, 26a is dimensioned so that the complete rotation of the crank pins 30, 30a around their axis 23, 23a causes an alternating oscillation movement of the crank pins 26, 26a and therefore of the pistons between two extreme positions determined by the volumetric compression ratio chosen.
  • Fig. 6 is a view in longitudinal section of the motor consisting of two modules arranged in the same casing 1, along the same axis, but angularly offset by 90 °, taking as a reference the angle of rotation of the pinions.
  • Each module is identical to that described above which is shown on the left with the same references while the right module which has been added has the same references but increased by a hundred.
  • Each module comprises two pairs of pistons (of which only one piston is shown) 3, 4 and 103, 104 connected radially in pairs by means of two arms 5, 6 and 105, 106 and moving in an annular space delimited by the casing 1 and a rotary crown 29 and 129 constituting the output drive shaft 2 and 102.
  • the rotary crowns 29 and 129 are connected together to form a single assembly and they are connected by a transmission means to the four shafts 27, 28, 127, 128 which are integral with the arms 5, 6, 105, 106 carrying the pistons.
  • the transmission means comprises two pinions 22, 22a common to the two modules which mesh with a ring gear 20 provided in the casing 1, each pinion 22, 22a is wedged respectively on a shaft common to the two modules 23, 123a and 23a, 123.
  • Sprockets 22 and 22a, common to the two modules, are between two radial walls 29a and 129a, one belonging to the left module, the other to the narrow module and forming part of the common assembly 29-129.
  • the shaft 23, 123a is connected by a connecting rod 25 to the crankpin 26 of the external shaft 27 and by a connecting rod 125a to the crankpin 126a of the internal shaft 128.
  • the shaft 23a, 123 is connected by a connecting rod 25a to the crankpin 26a of the internal shaft 28 and by a connecting rod 125 to the crankpin 126 of the external shaft 127.
  • crank pin 26a associated with the shaft 23a and the crankpin 126 associated with the shaft 123 which drive the pinion 22a are angularly offset by 90 °.
  • crank pin 26 associated with the shaft 23 and the crank pin 126a associated with the shaft 123a which drive the pinion 22 are angularly offset by 90 °.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Hydraulic Motors (AREA)
  • Transmission Devices (AREA)

Claims (7)

1. Drehkolben-Motor mit einem festen Gehäuse (1), das einen ringförmigen Raum begrenzt, in welchem in gleicher Richtung drehbare Kolben (3, 3a, 4, 4a 103,104) montiert sind, die paarweise mittels jeweils eines Armes (5, 6) diametral miteinander verbunden und zu einer zyklischen Geschwindigkeitsänderung anregbar sind, durch welche eine Volumenänderung der von den Radialflächen der Kolben begrenzten Räume hervorgerufen wird, die Kammern eines in einem Viertaktzyklus arbeitenden Motors darstellen, wobei der genannte ringförmige Raum außer von dem Gehäuse (1) ferner von einem drehbaren Kranz (2) begrenzt ist, der Öffnungen (16, 16a, 17,17a) aufweist, die eine Winkelbewegung der Arme für das gegenseitige Annähern und Entfernen der Kolben ermöglichen, und wobei der genannte Kranz (2) die Motorausgangswelle bildet oder mit dieser verbunden ist, dadurch gekennzeichnet, daß der drehbare Kranz (2) durch ein Übertragungsorgan mit Wellen (27, 28) verbunden ist, die koaxial zur Motorwelle angeordnet und fest mit den die Kolben (3, 3a, 4, 4a) tragenden Armen (5, 6) verbunden sind, und daß das Übertragungsorgan gegenüber der aus Armen und Kolben bestehenden Baugruppe seitlich versetzt ist.
2. Motor nach Anspruch 1, dadurch gekennzeichnet,
- daß der drehbare Kranz (2) sich zu einem Laufkäfig (29) ausweitet und zwei diametral einander gegenüberliegende Achsen (23, 23a) trägt, auf denen zwei in Längsrichtung gegeneinander versetzte drehbare Zahnräder (22, 22a) montiert sind, die mit der Innenverzahnung (21) eines festen äußeren Zahnkranzes (20) kämmen,
- daß jedes dieser Zahnräder (22, 22a) eine Zähnezahl besitzt, die halb so groß ist wie diejenige des Zahnkranzes (20),
- und daß jedes der genannten Zahnräder (22, 22a) ferner eine zu seiner eigenen Drehachse exzentrische Achse (24, 24a) trägt, an der ein Ende einer Pleuelstange (25, 25a) angelenkt ist, deren anderes Ende an einem Kurbelzapfen (26, 26a) angelenkt ist, welcher mit einer der Wellen (27, 28) fest verbunden ist, die einen der ein Paar der Kolben (3 und 3a, 4 und 4a) miteinander verbindenden Arme (5, 6) trägt.
3. Motor nach Anspruch 1, dadurch gekennzeichnet, daß der diametrale Querschnitt des von dem Gehäuse (1) und dem drehbaren Kranz (2) begrenzten ringförmigen Raumes eine Kombination von kreisförmigen Sektoren und Geradenabschnitten ist.
4. Motor nach Anspruch 3, dadurch gekennzeichnet, daß die Dichtungsfläche sich auf der Höhe des mittleren Durchmessers des Torus befindet.
5. Motor nach Anspruch 1, dadurch gekennzeichnet, daß ein festes Gehäuse (1) vorgesehen ist, in welchem längs ein und derselben Achse zwei Baugruppen symmetrisch angeordnet sind, die bezogen auf den Drehwinkel des Übertragungsorgans um 90° gegeneinander versetzt sind und jeweils vier Kolben (3, 4, 103, 104) enthalten, welche paarweise mittels zweier Arme (5, 6, 105, 106) diametral miteinander verbunden sind und sich in einem ringförmigen Raum bewegen, der von dem Gehäuse (1) und einem drehbaren Kranz (29, 129) begrenzt ist, der die Motorwelle bildet oder mit dieser verbunden ist, und daß die drehbaren Kränze (29, 129) der beiden Baugruppen durch ein Übertragungsorgan mit Wellen (27, 28, 127, 128) verbunden sind, die koaxial zur Motorwelle angeordnet und fest mit den die Kolben tragenden Armen (5, 6, 105, 106) verbunden sind.
6. Motor nach Anspruch 5, dadurch gekennzeichnet, daß das Übertragungsorgan zwei Zahnräder (22, 22a) umfaßt, die beiden Baugruppen gemeinsam sind und die mit einem in dem Gehäuse (1) vorgesehenen Zahnkranz (20) kämmen, und daß jedes Zahnrad (22, 22a) auf beiden Seiten von je einem Kurbelzapfen (26, 126 bzw. 126a, 26a) angetrieben wird, wobei der auf der einen Seite jedes Zahnrades (22, 22a) antreibend wirkende Kurbelzapfen (26, 126) mit der mit dem Arm (5, 105) eines Kolbenpaares (3, 103) jeder Baugruppe verbundenen äußeren Welle (27,127) fest verbunden ist, während der auf der anderen Seite eines jeden Zahnrades (22, 22a) antreibend wirkende Kurbelzapfen (126a, 26a) mit der mit dem Arm (106, 6) des anderen Kolbenpaares (104, 4) jeder Baugruppe verbundenen inneren Welle (128, 28) fest verbunden ist.
7. Motor nach Anspruch 6, dadurch gekennzeichnet, daß die mit den Antriebsachsen (23, 123a, 23a, 123) jedes der Zahnräder (22, 22a) verbundenen Kurbelzapfen (26, 126a, 26a, 126) um einen Winkel von 90° gegeneinander versetzt sind.
EP81400130A 1980-02-06 1981-01-29 Motor mit Drehkolben, die eine periodisch veränderliche Geschwindigkeit haben, und Antriebsmitteln Expired EP0034958B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8002539A FR2475126A1 (fr) 1980-02-06 1980-02-06 Perfectionnement aux moteurs volumetriques rotatifs
FR8002539 1980-02-06

Publications (3)

Publication Number Publication Date
EP0034958A2 EP0034958A2 (de) 1981-09-02
EP0034958A3 EP0034958A3 (en) 1981-09-16
EP0034958B1 true EP0034958B1 (de) 1984-05-16

Family

ID=9238261

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81400130A Expired EP0034958B1 (de) 1980-02-06 1981-01-29 Motor mit Drehkolben, die eine periodisch veränderliche Geschwindigkeit haben, und Antriebsmitteln

Country Status (5)

Country Link
US (1) US4419057A (de)
EP (1) EP0034958B1 (de)
JP (1) JPS56159503A (de)
DE (1) DE3163548D1 (de)
FR (1) FR2475126A1 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5069604A (en) * 1989-06-01 1991-12-03 Al Sabih Adel K Radial piston rotary device and drive mechanism
GB9007372D0 (en) * 1990-04-02 1990-05-30 Leggat Bernard C A rotary engine
DE4129395A1 (de) * 1991-09-04 1992-05-14 Wilhelm Geissler Drehkolben-brennkraftmaschine, kompressor, pumpe
IT1266046B1 (it) * 1992-01-30 1996-12-20 Alessandro Tamburini Motore a combustione interna a settori rotanti con velocita' angolare variabile
FR2693503B1 (fr) * 1992-07-07 1994-10-07 Bard Jean Dispositif mécanique utilisé pour former un moteur ou une pompe ou un compresseur à piston rotatif.
FR2694336B1 (fr) * 1992-07-29 1994-11-04 Canova Sarls Etablissements Dispositif de liaison cinématique pour pistons rotatifs et moteur comprenant un tel dispositif.
DE102005020221A1 (de) * 2005-04-30 2006-11-02 Franz Riedl Rotationskolbenmaschine zur Verwendung als Arbeitsmaschine, Kraftmaschine oder Verbrennungsmotor
ES2312243B1 (es) * 2006-01-25 2009-12-29 Jordi Amell Amell Motor rotativo.
US8176892B2 (en) * 2006-06-08 2012-05-15 Reisser Heinz-Gustav A Internal combustion engine
AT506123B1 (de) 2007-11-30 2009-08-15 Fritz Mondl Brennkraftmaschine mit innerer verbrennung
UA87229C2 (ru) * 2007-12-04 2009-06-25 Евгений Федорович Драчко Роторно-поршневая машина объемного расширения
JP5655076B2 (ja) * 2009-10-02 2015-01-14 ウゴ・ジュリオ・コペロウィクジュ 動的に可変の圧縮率及び体積配置を有するコンプレッサー及びロータリーエンジンの構築のためのシステム
UA101699C2 (ru) * 2011-06-03 2013-04-25 Евгений Федорович Драчко Гибридный двигатель внутреннего сгорания
RU169997U1 (ru) * 2016-10-11 2017-04-11 Александр Николаевич Черноштанов Устройство связи лопастей роторно-лопастного двигателя

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR38996E (fr) * 1930-03-25 1931-08-10 Perfectionnements aux pompes et compresseurs
US2349848A (en) * 1942-12-08 1944-05-30 Davids Robert Brewster Relative motion rotative mechanism
FR980793A (fr) * 1943-03-05 1951-05-17 Perfectionnements aux pompes ou compresseurs
FR953008A (fr) * 1947-08-28 1949-11-29 Moteur rotatif à explosions à double effet
GB947351A (en) * 1960-10-19 1964-01-22 Jeannine Marie Suzanne Larpent Rotary pumps, compressors and engines
FR1488266A (fr) * 1966-03-17 1967-07-13 Machine volumétrique utilisable comme pompe, moteur ou moto-pompe
US3807368A (en) * 1972-07-21 1974-04-30 R Johnson Rotary piston machine

Also Published As

Publication number Publication date
EP0034958A3 (en) 1981-09-16
FR2475126B1 (de) 1983-02-25
DE3163548D1 (en) 1984-06-20
JPS6147966B2 (de) 1986-10-22
JPS56159503A (en) 1981-12-08
EP0034958A2 (de) 1981-09-02
US4419057A (en) 1983-12-06
FR2475126A1 (fr) 1981-08-07

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