EP2643552A2 - Machine à piston rotatif - Google Patents

Machine à piston rotatif

Info

Publication number
EP2643552A2
EP2643552A2 EP11788063.3A EP11788063A EP2643552A2 EP 2643552 A2 EP2643552 A2 EP 2643552A2 EP 11788063 A EP11788063 A EP 11788063A EP 2643552 A2 EP2643552 A2 EP 2643552A2
Authority
EP
European Patent Office
Prior art keywords
rotary piston
encoder wheel
piston machine
machine according
wheel
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.)
Granted
Application number
EP11788063.3A
Other languages
German (de)
English (en)
Other versions
EP2643552B1 (fr
Inventor
Michael Steinbauer
Andreas Krobath
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.)
AVL List GmbH
Original Assignee
AVL List GmbH
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 AVL List GmbH filed Critical AVL List GmbH
Publication of EP2643552A2 publication Critical patent/EP2643552A2/fr
Application granted granted Critical
Publication of EP2643552B1 publication Critical patent/EP2643552B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F01C20/00—Control of, monitoring of, or safety arrangements for, machines or engines
    • F01C20/06—Control of, monitoring of, or safety arrangements for, machines or engines specially adapted for stopping, starting, idling or no-load operation
    • 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
    • F01C1/22—Rotary-piston machines or engines of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth- equivalents than the outer member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/807—Balance weight, counterweight
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/81—Sensor, e.g. electronic sensor for control or monitoring

Definitions

  • the present invention relates to a rotary piston machine, in particular a rotary engine, according to the preamble of claim 1.
  • the invention will be described below with reference to a rotary piston engine in which a substantially triangular rotary piston rotates on an eccentric shaft arranged in the motor housing.
  • the invention is also applicable to a rotary piston engine with two, four or more piston corners and can generally also with rotary piston engines, which have a centric in the motor housing rotating piston, are used.
  • the invention can also be used in rotary-piston machines with two, three or more juxtaposed rotary pistons.
  • the present invention is preferably used in motor vehicles and in connection with a power generator, which is particularly suitable for use as a so-called range extender in electrically powered vehicles.
  • the internal combustion engine of the range extender In motor vehicles with electric drive and range extender, the internal combustion engine of the range extender is usually started and stopped while driving without immediate action of the driver, in particular depending on the state of charge of the battery of the electric drive. In contrast to motor vehicles with a pure engine drive, the internal combustion engine of the range extender in such vehicles is not continuously but only temporarily operated and usually has longer downtime.
  • the eccentric shaft and with it the rotary piston have a defined rotational position so as to achieve a reliable start or an advantageous holding position.
  • a donor wheel coupled to the eccentric shaft is usually provided, which has in its peripheral region a defined structure, for example in the form of teeth and tooth spaces, which can be sensed by a rotation of the donor wheel. In this way, information about the current rotational position and speed of the encoder wheel or the shaft can be obtained.
  • the rotary piston engine according to the invention in particular rotary engine, has a shaft and a sensor wheel with a first structure, based on which by scanning by means of a pickup, the rotational speed and / or rotational position of the shaft can be determined, and is characterized in that the encoder wheel for generating a Imbalance has a non-rotationally symmetric mass distribution.
  • the invention is based on the idea to design for the determination of rotational position and / or speed of the shaft encoder wheel so that it has an imbalance that is sufficiently large to one or more commonly arranged on the shaft balancing weights, to compensate for Imbalance of the eccentric shaft serve, at least partially replace.
  • the mass of the encoder wheel is not distributed rotationally symmetrical about the axis of rotation of the encoder wheel.
  • the mass of the encoder wheel is in this case distributed so that only a rotation about the axis of rotation by an angle of 360 °, the encoder wheel maps to itself, which, however, is not the case with a rotation at any other angle.
  • the encoder wheel comprises a Geberradlag on which the first structure is, wherein the Geberradusion has a non-rotationally symmetric mass distribution.
  • the first structure is in this case in particular on the outer circumference of the encoder wheel and may have a substantially rotationally symmetric mass distribution.
  • the imbalance of the sender wheel is essentially realized by the design of the encoder wheel, in which the overwhelming majority of the mass of the sender wheel is, without this having an effect on the first structure and thus on the reliability in determining the Speed and / or rotational position of the encoder wheel has.
  • the Geberradscale at least a first sector, which has a higher moment of inertia than a corresponding to the first sector and this opposite second sector of the Geberradsay.
  • the encoder wheel disk has a greater thickness and / or mass density in at least one region of the first sector than in the corresponding region of the second sector.
  • the region of the first sector it is preferable for the region of the first sector to extend in the direction of the circumference of the encoder wheel disk.
  • the mass distribution of the encoder wheel in such a way that the unbalance resulting from a rotation of the encoder wheel reduces or compensates for an imbalance of the rotating shaft.
  • the encoder wheel can be on one or more additional balance weights that compensate for an imbalance of the shaft, in particular the eccentric shaft, usually be waived, which further simplifies the construction of the engine.
  • the first structure by means of which by scanning the rotational position and / or rotational speed of the shaft or the encoder wheel can be determined, preferably has at least partially a periodic course. Thereby, the rotational position or speed of the shaft can be determined in a particularly simple manner.
  • the encoder wheel has a second structure, with which cooperate a starter device and thereby can set the encoder wheel in rotation.
  • the second structure has the form of a ring gear, a so-called starter ring, which can be set in rotation by a gear of the starter device, which may itself be part of the rotary piston engine according to the invention.
  • the sender wheel including the first and / or second structure is made in one piece. As a result, both the production of the encoder wheel including the first and second structure and their mounting on the shaft are simplified.
  • the encoder wheel including the first and / or second structure is realized as a cast part, whereby a particularly simple and reliable realization of the non-rotationally symmetrical mass distribution or the ring gear is made possible.
  • the second structure can be manufactured as a separate part and pressed onto the sender wheel.
  • the production-technical characteristics in the production of the sprocket in particular can be taken into account without compromising the simplicity and compactness of the structure of the sender wheel.
  • the encoder wheel is rotatably connected to the shaft.
  • the shaft is in particular an eccentric shaft.
  • the mass distribution in the transmitter wheel which is not rotationally symmetrical in accordance with the invention, is used in a particularly advantageous manner in that unbalance during the rotation of the eccentric shaft is limited to simple and reliably balanced or at least reduced, the otherwise necessary balancing weights can be saved
  • the rotary piston machine comprises a transducer for scanning the first structure of the encoder wheel and an evaluation device for deriving the rotational speed and / or the rotational direction of the shaft on the basis of the sampled first structure of the encoder wheel.
  • FIG. 1 shows a schematic cross section through a rotary engine at different piston positions.
  • Figure 2 shows an example of a sender wheel together with means for determining the rotational position and / or speed and for controlling the motor.
  • Fig. 4 shows the example shown in Figure 3 in front and side view.
  • FIG. 8 shows an example of a donor wheel with starter ring and integrated imbalance.
  • Fig. 9 shows an example of a donor wheel with starter ring together with a starter device for driving the encoder wheel.
  • Fig. 1 shows a cross section through a rotary engine at different piston positions.
  • a rotary piston 1 1 in the form of a triangle composed of flattened circular arcs circulates on a control disk 12 of an eccentric shaft 13 arranged in a motor housing 10 and causes them to rotate.
  • the position of the axis of rotation 14 of the eccentric shaft 13 is stationary.
  • a transmitter wheel is arranged, which is not shown for reasons of clarity in Fig. 1 and will be explained in more detail with reference to the example shown in FIG.
  • FIG. 2 shows an example of a donor wheel 20 having in the region of its outer periphery a structure or pattern in the form of a plurality of teeth 21 and tooth gaps 22 of substantially identical width.
  • the one shown here Example of a donor wheel 20 a further tooth 23 provided with about three times the width.
  • the donor disc 20 rotatably coupled thereto is also set in rotation, so that its teeth 21, 23 and tooth gaps 22 have a receptacle arranged close to the circumference of the donor wheel 20 25, which is formed for example as an optical or inductive sensor, pass and can be scanned by this.
  • the sensor signals obtained during the scanning of the individual teeth 21, 23 or tooth spaces 22 of the rotating encoder wheel 20 are fed to an evaluation device 26 where they are processed and / or evaluated in such a way that information about the current rotational position and / or rotational speed of the encoder wheel 20 is obtained.
  • the current angular position of the encoder wheel 20 can be determined relative to the defined rotational position.
  • the current angular position of the encoder wheel 20 can be determined by temporary or continuous counting of the transducer 25 passing teeth 21, 23 and / or tooth gaps 22, a speed of the rotating encoder disc 20 and possibly closed to speed fluctuations.
  • the information derived in the evaluation device 26 is fed to a control device 27, which can control or regulate the rotary piston machine in a predetermined manner.
  • control device 27 controls a generator 28, through which the eccentric shaft 13 and the rotary piston running around these 1 1 in a defined position; especially at the time of starting and / or after stopping the rotary piston machine, can be brought.
  • FIG. 3 shows an example of a transmitter wheel 30, for which the explanations in connection with the example of a transmitter wheel 20 shown in FIG. 2 apply correspondingly.
  • an additional mass 31 is provided, which generates an imbalance upon rotation of the encoder wheel 30 about the rotation axis 14.
  • the mass 31 is arranged in a region of the encoder wheel 30, which runs on the outer edge of a circle segment 32 of the encoder wheel disk 33.
  • Under the encoder wheel 33 here is the circular disk-shaped inner portion of the encoder wheel 30 without the arranged in its peripheral region teeth 21, 23 and tooth gaps 22 to understand.
  • the mass 31 is preferably an integral part of the encoder wheel 30, in particular the encoder wheel 33, and is manufactured with this in one piece, for example in the form of a single casting.
  • the sector 32 of the Geberradrise 33 thereby has an inertial moment which is greater than the moment of inertia of a corresponding sector 32 ', which with respect to the rotation axis 14 of the sector 32 opposite, with the same sector surface.
  • FIG. 4 shows the encoder wheel 30 described in conjunction with FIG. 3 both in front view (left-hand figure part) and in a sectional view in side view (right figure part), in which the encoder wheel disk 33, the wider tooth 23 arranged on the circumference of the encoder wheel disk 33 as well the additional mass 31 can be seen in the form of a projection.
  • the additional mass 31 in whole or in part by forming in a corresponding region in or on the encoder wheel disk 33 a material with a mass density which is greater than the mass density of the encoder wheel disk 33. is provided. In the example shown, this would mean that the projection in the region of the mass 31 would be smaller or might even be omitted.
  • FIGS. 5 and 6 show alternatives to the example of the sensor wheel 30 shown in FIGS. 3 and 4, in which a non-rotationally symmetrical mass distribution for generating an imbalance is distributed by an additional mass 35 or preferably uniformly distributed over a circular sector of the encoder wheel disk 33 . is realized by provided in the edge region of the Geberradscale 33 additional mass elements 36.
  • the imbalance in the rotation of the encoder wheel 30 about the rotation axis 14 can be generated by a plurality of further embodiments. Decisive here is that the mass of the encoder wheel 30 is distributed around the axis of rotation 14 of the encoder wheel 30 so that only a rotation through an angle of 360 °, but not at a rotation about any other angle to the rotation axis 14, the encoder wheel 30 on depicting yourself.
  • FIG. 7 shows an example of a transmitter wheel 40 with teeth 21, 23 and tooth spaces 22, which in addition to the transmitter wheel 20 shown in FIG. wreath 50, in which a starter device (not shown) engage and thereby enable the encoder wheel 40 and the eccentric shaft 13 coupled thereto (see FIG. 1) to rotate about the axis of rotation 14.
  • the ring gear 50 is also referred to as a starter ring.
  • the function of the ring gear 50 can also be realized by a differently designed structure with which the starter device can cooperate, for example by one or more recesses or openings in the sender wheel 40, into which e.g. a circumferential pin can engage a corresponding starter device.
  • the encoder wheel 40 is preferably made in one piece with the ring gear 50, for example, by machining and / or forming a piece of metal or by casting a the gear wheel 40 and the ring gear 50 comprehensive casting.
  • the encoder wheel 40 and the ring gear 50 individually, preferably by the o.g. Manufacturing techniques, and then connect them together, in particular by pressing the ring gear 50 to the encoder wheel 40th
  • FIG. 8 shows an example of a transmitter wheel which, in addition to the ring gear 50, has a mass 31, by means of which a non-rotationally symmetrical mass distribution is realized in order to generate an imbalance.
  • FIG. 9 shows a schematic side view of an example of a transmitter wheel 40 with starter ring 50 together with a starter device for driving the transmitter wheel 40.
  • the encoder wheel 40 provided with teeth 21, 23 and tooth gaps 22 is coupled in a rotationally fixed manner to the eccentric shaft 13 of a rotary piston engine and additionally has a toothed wheel.
  • wreath 50 which is an integral part of the sender wheel 40 or is subsequently attached to the sender wheel 40, for example by pressing or welding.
  • Wave can be derived.
  • the optionally provided mass 31 (see Fig. 8) is realized in this example as located on the sprocket 50 projection, for which apply the statements in connection with the examples shown in Figures 3 and 4 accordingly.
  • the projection may, as described in more detail above, together with the encoder wheel 40 and the ring gear 50 in one piece, e.g. as a casting.
  • the projection on the encoder wheel 40 in particular on the encoder wheel, and to carry out this in one piece.
  • the ring gear 50 it may be necessary for the ring gear 50 to have a correspondingly shaped recess through which the projection located on the encoder wheel 40 can pass.
  • starter pinion 51 On a starter shaft 52 driven by an electric motor 53, there is a starter pinion 51, which can intervene in the direction of the ring gear 50 by displacing the starter shaft 52, possibly including the electric motor 53, and can rotate it together with the encoder wheel 40. Because of this principle of operation, the device composed of starter pinion 51, starter shaft 52 and electric motor 53 may also be referred to as an engagement starter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Hydraulic Motors (AREA)
  • Testing Of Balance (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

Machine à piston rotatif, en particulier moteur à piston rotatif, qui comporte un arbre et une roue de détection (30) présentant une première structure (21 - 23) à l'aide de laquelle la vitesse de rotation et / ou la position de rotation de l'arbre peut être déterminée par palpage à l'aide d'un capteur. L'objet de la présente invention est de simplifier la structure de la machine à piston rotatif. A cet effet, la roue de détection (30) présente une répartition de masse (31) qui n'est pas à symétrie de rotation pour produire un balourd (31).
EP11788063.3A 2010-11-25 2011-11-24 Machine à piston rotatif Not-in-force EP2643552B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA1965/2010A AT510735B1 (de) 2010-11-25 2010-11-25 Rotationskolbenmaschine
PCT/EP2011/005922 WO2012069195A2 (fr) 2010-11-25 2011-11-24 Machine à piston rotatif

Publications (2)

Publication Number Publication Date
EP2643552A2 true EP2643552A2 (fr) 2013-10-02
EP2643552B1 EP2643552B1 (fr) 2015-08-05

Family

ID=45044516

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11788063.3A Not-in-force EP2643552B1 (fr) 2010-11-25 2011-11-24 Machine à piston rotatif

Country Status (4)

Country Link
US (1) US9222361B2 (fr)
EP (1) EP2643552B1 (fr)
AT (1) AT510735B1 (fr)
WO (1) WO2012069195A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107860581A (zh) * 2017-09-25 2018-03-30 南京航空航天大学 一种模块化发动机转子不平衡振动综合试验台

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DE102014002670B4 (de) * 2014-02-28 2017-01-19 gomtec GmbH Drehwinkelgeber und Verfahren zum Erfassen einer Winkellage
US10436056B2 (en) 2015-06-23 2019-10-08 General Electric Company Relative position measurement
JP6918858B2 (ja) * 2019-03-15 2021-08-11 本田技研工業株式会社 エンジンのクランク角検出装置

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Publication number Priority date Publication date Assignee Title
CN107860581A (zh) * 2017-09-25 2018-03-30 南京航空航天大学 一种模块化发动机转子不平衡振动综合试验台

Also Published As

Publication number Publication date
US20130259724A1 (en) 2013-10-03
EP2643552B1 (fr) 2015-08-05
WO2012069195A2 (fr) 2012-05-31
WO2012069195A8 (fr) 2013-03-28
AT510735A1 (de) 2012-06-15
US9222361B2 (en) 2015-12-29
WO2012069195A3 (fr) 2013-05-23
AT510735B1 (de) 2012-09-15

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