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EP0775816A1 - V-type piston engine with measurement pickup device - Google Patents

V-type piston engine with measurement pickup device Download PDF

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Publication number
EP0775816A1
EP0775816A1 EP96402498A EP96402498A EP0775816A1 EP 0775816 A1 EP0775816 A1 EP 0775816A1 EP 96402498 A EP96402498 A EP 96402498A EP 96402498 A EP96402498 A EP 96402498A EP 0775816 A1 EP0775816 A1 EP 0775816A1
Authority
EP
European Patent Office
Prior art keywords
piston
piston engine
engine according
inert
line
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
EP96402498A
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German (de)
French (fr)
Other versions
EP0775816B1 (en
Inventor
Christian Marie Michel Roger
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 Transmission Systems SAS
Original Assignee
Hispano Suiza SA
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Publication date
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Publication of EP0775816A1 publication Critical patent/EP0775816A1/en
Application granted granted Critical
Publication of EP0775816B1 publication Critical patent/EP0775816B1/en
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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
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
    • 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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating, or supervising devices
    • 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
    • F02B2275/18—DOHC [Double overhead camshaft]

Definitions

  • the invention relates to a V-piston engine provided with a measurement taking device. It applies in particular, in a development phase of a V-piston engine, to evaluate the thermal and dynamic behavior of the pistons and / or connecting rods when the engine is in operation.
  • the invention consists in operating normally only one line of the V of the engine which therefore performs repetitions of cycles with four phases: intake, compression, explosion, expansion, and taking measurements on this line.
  • the measurements are taken by sensors arranged on the piston and / or on the connecting rod of the operating line.
  • the second line of the V is made inert by placing the combustion chamber of this line in the open air and by closing off its gas inlet inlet.
  • This second line of the V is used as a mechanical support on which the connecting wires of the sensors are fixed.
  • a device for transmitting the measurements made by the sensors is fixed to the external face of the inert piston which is in connection with the combustion chamber, this external face being in the air free and at room temperature.
  • the transmission device may for example be a telemetry device in radio link with a device for recording measurements placed outside the engine.
  • the transmission device can also be a flexible or articulated mechanical connection making it possible to connect the connection wires of the sensors to the cylinder head of the inert line, the wires then being connected to the device for recording the measurements placed outside the engine.
  • FIG. 1 schematically represents a sectional view of a set of two lines of a V-shaped motor provided with a device for taking measurements, according to a first embodiment of the invention.
  • V injection engines have two sets of cylinders arranged in two lines forming a V.
  • the number of cylinders can vary from one engine to another.
  • two cylinders 10,20 are shown, these two cylinders forming two lines independent of one another.
  • Each line has inside the cylinders 10, 20, a piston 11, 21 linked to a connecting rod 12, 22.
  • the two connecting rods are mounted on the same crankshaft 13.
  • the two lines of a V engine being independent, it is possible to operate only one line on the two without modifying the thermal or dynamic behavior of the connecting rod and the piston in operation. Only the engine power is halved.
  • the first line also includes two gas inlet and outlet valves 14, 15. The operation of this line is normal, the intake, compression, explosion and expansion phases being carried out successively.
  • the second line does not have an intake valve or an exhaust valve, the combustion chamber 23 is placed in the open air and the intake inlet is closed.
  • This line has no compression and explosion function, and the piston 21 is inert. Under these conditions, only half a motor is running.
  • the measurements are then carried out on the line in operation by having sensors, not shown, on the piston 11 and / or the connecting rod 12 of this line.
  • the second line is used as a support for the connecting wires 17 of the sensors and as a support for a device for transmitting the measurements to a device for recording the measurements arranged outside the engine and not shown in FIG. 1.
  • the device for transmitting the measurements is a telemetry device fixed to the external face 24 of the inert piston 21, this face being disposed facing the combustion chamber therefore in the open air and at room temperature.
  • the additional mass provided by the transmission device must be as low as possible so as not to reduce the performance of the engine, nor to bring the various elements of the engine (piston, connecting rod, crankshaft) to rupture.
  • the piston 21 and the connecting rod 22, which have no compression function, are lightened so as to compensate for the added mass.
  • the cylinder 20 is closed by a cylinder head 25 constituted for example by a plate.
  • the measurement sensors are placed on the piston 11 and / or the connecting rod 12. These sensors can be thermocouples, strain gauges, accelerometers, or eddy current probes.
  • Connecting wires connect the various sensors to the telemetry device placed on the external face of the inert piston 21.
  • the routing of the wires is carried out by gluing along the connecting rods 12, 22.
  • the routing of the wires at the joints between a piston and the associated connecting rod or between the two connecting rods is carried out, for example, using flexible parts 1, 2, 3, 4, as a support for the wires.
  • the wires bypass the articulation and pass from one connecting rod to the other via the flexible part 3.
  • the wires are connected to the telemetry device by means of a sealed passage, not shown, made in the head of the piston 21.
  • the telemetry device comprises a transmitter 30 provided with a transmission antenna, the transmitter being fixed on the external face 24 of the piston 21 and supplied by induction or by battery.
  • the induction power supply is obtained for example by means of an assembly consisting of a wound stator 32 and a wound rotor 31, the stator 32 being fixed, the rotor 31 being placed opposite the stator 32 and driven in a rectilinear movement. of translation.
  • the stator 32 is fixed for example to the cylinder head 25 for closing the cylinder 20, the rotor 31 is integral with the transmitter 30 and follows the movements of the piston 21.
  • the measurements carried out by the sensors are processed by the transmitter 30 and transmitted for example by radio waves, by means of the transmission antenna to the recorder arranged outside the engine.
  • FIG. 2 schematically represents a sectional view of the head of the inert piston provided with a device for transmitting the measurements, according to a second embodiment of the invention.
  • the device for transmitting the measurements consists of a flexible or articulated mechanical connection 40, for example a flexible strap, disposed between the head of the piston 21 and the cylinder head 25 for closing the cylinder 20.
  • the mechanical connection 40 has two ends fixed respectively on the external face 24 of the piston 21 and on the plate 25.
  • the measurements are then routed to an external recorder 26 only by the wires 17 connecting the sensors.
  • the mechanical connection 40 is used as a support for the connection wires 17 between the head of the piston 21 and the cylinder head 25 and its length is at least equal to that of the stroke of the piston 21.
  • a sealed passage in the head of the piston 21 allows the connecting wires to pass through the head of the piston 21.
  • the connecting wires are then routed, being glued on the mechanical connection 40, to the external recorder 26 via a second sealed passage made in the cylinder head 25 for closing the cylinder 20.
  • the present invention is not limited to the embodiments precisely described, in particular the routing of the wires can be carried out in a different way and in particular along the casings of the two cylinders of the V engine.
  • the mechanical connection 40 and the flexible parts 16, 17, 18, 19 can be replaced by springs or any other equivalent means which is both sufficiently rigid so that the wires do not move in an anarchic fashion, and sufficiently flexible to follow movements of pistons and connecting rods.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Testing Of Engines (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The engine has two rows of cylinders (10,20). One of the rows of cylinders (10) provides for normal admission, compression, combustion and expansion of a fuel/air mixture. The second row of cylinders (20) contains inert pistons (21) and a closed air-filled combustion chamber (23). Each of the inert pistons has an outer face towards the combustion chamber which carries telemetering equipment in the form of an emitter (30) with a rotor (31) which interacts with a stator (32). The inert pistons and connecting rods (22) on the inert side are lightened to compensate for the weight of the measuring equipment.

Description

L'invention concerne un moteur à pistons en V muni d'un dispositif de prise de mesures. Elle s'applique en particulier, dans une phase de mise au point d'un moteur à pistons en V, pour évaluer le comportement thermique et dynamique des pistons et/ou des bielles lorsque le moteur est en fonctionnement.The invention relates to a V-piston engine provided with a measurement taking device. It applies in particular, in a development phase of a V-piston engine, to evaluate the thermal and dynamic behavior of the pistons and / or connecting rods when the engine is in operation.

La prise de mesure sur une bielle ou un piston est rendue difficile voire impossible dans un moteur à pistons en V en fonctionnement. En effet, le faible encombrement disponible autour de la cinématique piston/bielle, mais aussi la température, la vitesse et la lubrification, représentent de grosses contraintes pour effectuer des liaisons par fils ou pour l'implantation d'une télémesure entre l'ensemble piston/bielle et la culasse ou le carter.Taking measurements on a connecting rod or a piston is made difficult or even impossible in a V-piston engine in operation. Indeed, the small space available around the kinematics piston / rod, but also the temperature, the speed and the lubrication, represent great constraints to carry out connections by wire or for the establishment of a telemetry between the piston assembly / connecting rod and cylinder head or housing.

Pour résoudre ce problème, l'invention consiste à ne faire fonctionner normalement qu'une seule ligne du V du moteur qui réalise donc des répétitions de cycles à quatre phases : admission, compression, explosion, détente, et à effectuer des prises de mesure sur cette ligne. Les prises de mesure sont effectuées par des capteurs disposés sur le piston et/ou sur la bielle de la ligne de fonctionnement.To solve this problem, the invention consists in operating normally only one line of the V of the engine which therefore performs repetitions of cycles with four phases: intake, compression, explosion, expansion, and taking measurements on this line. The measurements are taken by sensors arranged on the piston and / or on the connecting rod of the operating line.

La deuxième ligne du V est rendue inerte en plaçant la chambre de combustion de cette ligne à l'air libre et en obturant son entrée d'admission des gaz. Cette deuxième ligne du V est utilisée comme support mécanique sur lequel sont fixés des fils de liaison des capteurs. Un dispositif de transmission des mesures effectuées par les capteurs est fixé sur la face externe du piston inerte qui est en liaison avec la chambre de combustion, cette face externe étant à l'air libre et à température ambiante. Le dispositif de transmission peut être par exemple un dispositif de télémesure en liaison radio avec un appareil d'enregistrement des mesures disposé à l'extérieur du moteur. Le dispositif de transmission peut être aussi une liaison mécanique souple ou articulée permettant de relier les fils de liaison des capteurs à la culasse de la ligne inerte, les fils étant ensuite reliés à l'appareil d'enregistrement des mesures disposé à l'extérieur du moteur.The second line of the V is made inert by placing the combustion chamber of this line in the open air and by closing off its gas inlet inlet. This second line of the V is used as a mechanical support on which the connecting wires of the sensors are fixed. A device for transmitting the measurements made by the sensors is fixed to the external face of the inert piston which is in connection with the combustion chamber, this external face being in the air free and at room temperature. The transmission device may for example be a telemetry device in radio link with a device for recording measurements placed outside the engine. The transmission device can also be a flexible or articulated mechanical connection making it possible to connect the connection wires of the sensors to the cylinder head of the inert line, the wires then being connected to the device for recording the measurements placed outside the engine.

Selon l'invention, le moteur à pistons en V est caractérisé en ce qu'il comporte :

  • une première ligne du V assurant des fonctions normales d'admission, de compression, d'explosion, et de détente, sur laquelle sont disposés des capteurs,
  • une deuxième ligne du V inerte, n'assurant aucune fonction de compression, ni d'explosion, comportant, à l'intérieur d'un cylindre, une chambre de combustion à l'air libre ayant une entrée d'admission obturée, la ligne inerte étant utilisée comme support mécanique.
According to the invention, the V-piston engine is characterized in that it comprises:
  • a first line of the V ensuring normal intake, compression, explosion and expansion functions, on which the sensors are arranged,
  • a second inert V line, providing no compression or explosion function, comprising, inside a cylinder, a combustion chamber in the open air having a closed intake inlet, the line inert being used as a mechanical support.

D'autres particularités et avantages de l'invention apparaîtront clairement dans la suite de la description donnée à titre d'exemple non limitatif et faite en regard des figures annexées qui représentent :

  • La figure 1, une vue schématique en coupe d'un ensemble de deux lignes d'un moteur en V muni d'un dispositif de prise de mesures, selon un premier mode de réalisation de l'invention ;
  • La figure 2, une vue schématique en coupe de la tête du piston inerte d'un moteur en V muni d'un dispositif de transmission des mesures, selon un deuxième mode de réalisation de l'invention.
Other features and advantages of the invention will appear clearly in the following description given by way of non-limiting example and made with reference to the appended figures which represent:
  • FIG. 1, a schematic sectional view of an assembly of two lines of a V-shaped motor provided with a device for taking measurements, according to a first embodiment of the invention;
  • FIG. 2, a schematic sectional view of the head of the inert piston of a V-shaped engine provided with a device for transmitting the measurements, according to a second embodiment of the invention.

La figure 1 représente schématiquement une vue en coupe d'un ensemble de deux lignes d'un moteur en V muni d'un dispositif de prise de mesures, selon un premier mode de réalisation de l'invention.FIG. 1 schematically represents a sectional view of a set of two lines of a V-shaped motor provided with a device for taking measurements, according to a first embodiment of the invention.

Les moteurs à injection en V comportent deux ensembles de cylindres disposés suivant deux lignes formant un V. Le nombre de cylindres peut varier d'un moteur à un autre. Sur la figure 1, deux cylindres 10,20, sont représentés, ces deux cylindres formant deux lignes indépendantes l'une de l'autre. Chaque ligne comporte à l'intérieur des cylindres 10, 20, un piston 11, 21 lié à une bielle 12, 22.
Les deux bielles sont montées sur un même vilebrequin 13. Les deux lignes d'un moteur en V étant indépendantes, il est possible de ne faire fonctionner qu'une seule ligne sur les deux sans modifier le comportement thermique ou dynamique de la bielle et du piston en fonctionnement. Seule la puissance du moteur est divisée par deux.
Ainsi sur la figure 1, la première ligne comporte en outre deus soupapes 14,15 d'admission et d'échappement des gaz. Le fonctionnement de cette ligne est normal, les phases d'admission, de compression, d'explosion et de détente étant assurées successivement.V injection engines have two sets of cylinders arranged in two lines forming a V. The number of cylinders can vary from one engine to another. In Figure 1, two cylinders 10,20 are shown, these two cylinders forming two lines independent of one another. Each line has inside the cylinders 10, 20, a piston 11, 21 linked to a connecting rod 12, 22.
The two connecting rods are mounted on the same crankshaft 13. The two lines of a V engine being independent, it is possible to operate only one line on the two without modifying the thermal or dynamic behavior of the connecting rod and the piston in operation. Only the engine power is halved.
Thus in FIG. 1, the first line also includes two gas inlet and outlet valves 14, 15. The operation of this line is normal, the intake, compression, explosion and expansion phases being carried out successively.

La deuxième ligne ne comporte pas de soupape d'admission ni de soupape d'échappement, la chambre de combustion 23 est placée à l'air libre et l'entrée d'admission est obturée. Cette ligne n'a aucune fonction de compression et d'explosion, et le piston 21 est inerte.
Dans ces conditions, seul un demi-moteur fonctionne.The second line does not have an intake valve or an exhaust valve, the combustion chamber 23 is placed in the open air and the intake inlet is closed. This line has no compression and explosion function, and the piston 21 is inert.
Under these conditions, only half a motor is running.

Les mesures sont alors effectuées sur la ligne en fonctionnement en disposant des capteurs, non représentés, sur le piston 11 et/ou la bielle 12 de cette ligne. La deuxième ligne est utilisée comme support des fils de liaison 17 des capteurs et comme support d'un dispositif de transmission des mesures vers un appareil d'enregistrement des mesures disposé à l'extérieur du moteur et non représenté sur la figure 1.The measurements are then carried out on the line in operation by having sensors, not shown, on the piston 11 and / or the connecting rod 12 of this line. The second line is used as a support for the connecting wires 17 of the sensors and as a support for a device for transmitting the measurements to a device for recording the measurements arranged outside the engine and not shown in FIG. 1.

Dans un premier mode de réalisation de l'invention, le dispositif de transmission des mesures est un dispositif de télémesure fixé sur la face externe 24 du piston 21 inerte, cette face étant disposée en regard de la chambre de combustion donc à l'air libre et à température ambiante. La masse supplémentaire apportée par le dispositif de transmission doit être aussi faible que possible de façon à ne pas diminuer les performances du moteur, ni amener les différents éléments du moteur (piston, bielle, vilebrequin) en rupture.In a first embodiment of the invention, the device for transmitting the measurements is a telemetry device fixed to the external face 24 of the inert piston 21, this face being disposed facing the combustion chamber therefore in the open air and at room temperature. The additional mass provided by the transmission device must be as low as possible so as not to reduce the performance of the engine, nor to bring the various elements of the engine (piston, connecting rod, crankshaft) to rupture.

Afin de résoudre le problème de la masse ajoutée par le dispositif de télémesure, le piston 21 et la bielle 22, qui n'ont aucune fonction de compression, sont allégés de façon à compenser la masse ajoutée.In order to solve the problem of the mass added by the telemetry device, the piston 21 and the connecting rod 22, which have no compression function, are lightened so as to compensate for the added mass.

Pour éviter toute fuite d'huile, le cylindre 20 est fermé par une culasse 25 constituée par exemple par une plaque. Les capteurs de mesure sont placés sur le piston 11 et/ou la bielle 12. Ces capteurs peuvent être des thermocouples, des jauges de contrainte, des accéléromètres, ou des sondes à courants de Foucault.To avoid any oil leakage, the cylinder 20 is closed by a cylinder head 25 constituted for example by a plate. The measurement sensors are placed on the piston 11 and / or the connecting rod 12. These sensors can be thermocouples, strain gauges, accelerometers, or eddy current probes.

Des fils de liaison relient les différents capteurs au dispositif de télémesure placé sur la face externe du piston inerte 21. Le cheminement des fils s'effectue par collage le long des bielles 12,22.
Le cheminement des fils aux articulations entre un piston et la bielle associée ou entre les deux bielles est effectué, par exemple, en utilisant des pièces souples 1, 2, 3, 4, comme support des fils. Au niveau de l'articulation entre les deux bielles, les fils contournent l'articulation et passent d'une bielle à l'autre par l'intermédiaire de la pièce souple 3.Connecting wires connect the various sensors to the telemetry device placed on the external face of the inert piston 21. The routing of the wires is carried out by gluing along the connecting rods 12, 22.
The routing of the wires at the joints between a piston and the associated connecting rod or between the two connecting rods is carried out, for example, using flexible parts 1, 2, 3, 4, as a support for the wires. At the articulation between the two connecting rods, the wires bypass the articulation and pass from one connecting rod to the other via the flexible part 3.

Les fils sont reliés au dispositif de télémesure grâce à un passage étanche, non représenté, pratiqué dans la tête du piston 21.The wires are connected to the telemetry device by means of a sealed passage, not shown, made in the head of the piston 21.

Le dispositif de télémesure comporte un émetteur 30 pourvu d'une antenne d'émission, l'émetteur étant fixé sur la face externe 24 du piston 21 et alimenté par induction ou par pile.The telemetry device comprises a transmitter 30 provided with a transmission antenna, the transmitter being fixed on the external face 24 of the piston 21 and supplied by induction or by battery.

L'alimentation par induction est obtenue par exemple au moyen d'un ensemble constitué par un stator bobiné 32 et un rotor bobiné 31, le stator 32 étant fixe, le rotor 31 étant placé en regard du stator 32 et animé d'un mouvement rectiligne de translation. Le stator 32 est fixé par exemple à la culasse 25 de fermeture du cylindre 20, le rotor 31 est solidaire de l'émetteur 30 et suit les mouvements du piston 21.The induction power supply is obtained for example by means of an assembly consisting of a wound stator 32 and a wound rotor 31, the stator 32 being fixed, the rotor 31 being placed opposite the stator 32 and driven in a rectilinear movement. of translation. The stator 32 is fixed for example to the cylinder head 25 for closing the cylinder 20, the rotor 31 is integral with the transmitter 30 and follows the movements of the piston 21.

Les mesures effectuées par les capteurs sont traitées par l'émetteur 30 et émises par exemple par ondes radio, au moyen de l'antenne d'émission vers l'enregistreur disposé à l'extérieur du moteur.The measurements carried out by the sensors are processed by the transmitter 30 and transmitted for example by radio waves, by means of the transmission antenna to the recorder arranged outside the engine.

La figure 2 représente schématiquement une vue en coupe de la tête du piston inerte muni d'un dispositif de transmission des mesures, selon un deuxième mode de réalisation de l'invention.FIG. 2 schematically represents a sectional view of the head of the inert piston provided with a device for transmitting the measurements, according to a second embodiment of the invention.

Le dispositif de transmission des mesures est constitué par une liaison mécanique 40 souple ou articulée, par exemple une lanière souple, disposée entre la tête du piston 21 et la culasse 25 de fermeture du cylindre 20. La liaison mécanique 40 comporte deux extrémités fixées respectivement sur la face externe 24 du piston 21 et sur la plaque 25.The device for transmitting the measurements consists of a flexible or articulated mechanical connection 40, for example a flexible strap, disposed between the head of the piston 21 and the cylinder head 25 for closing the cylinder 20. The mechanical connection 40 has two ends fixed respectively on the external face 24 of the piston 21 and on the plate 25.

Les mesures sont alors acheminées jusqu'à un enregistreur 26 externe uniquement par les fils 17 de liaison des capteurs. La liaison mécanique 40 est utilisée comme support des fils de liaison 17 entre la tête du piston 21 et la culasse 25 et sa longueur est au moins égale à celle de la course du piston 21.The measurements are then routed to an external recorder 26 only by the wires 17 connecting the sensors. The mechanical connection 40 is used as a support for the connection wires 17 between the head of the piston 21 and the cylinder head 25 and its length is at least equal to that of the stroke of the piston 21.

Un passage étanche pratiqué dans la tête du piston 21 permet aux fils de liaison de traverser la tête du piston 21. Les fils de liaison sont ensuite acheminés, en étant collés sur la liaison mécanique 40, vers l'enregistreur 26 externe par l'intermédiaire d'un deuxième passage étanche pratiqué dans la culasse 25 de fermeture du cylindre 20.A sealed passage in the head of the piston 21 allows the connecting wires to pass through the head of the piston 21. The connecting wires are then routed, being glued on the mechanical connection 40, to the external recorder 26 via a second sealed passage made in the cylinder head 25 for closing the cylinder 20.

La présente invention n'est pas limitée aux exemples de réalisation précisément décrits, en particulier le cheminement des fils peut être effectué de façon différente et notamment le long des carters des deux cylindres du moteur en V.
La liaison mécanique 40 et les pièces souples 16, 17, 18, 19 peuvent être remplacées par des ressorts ou tout autre moyen équivalent qui soit à la fois suffisamment rigide pour que les fils ne se déplacent pas de façon anarchique, et suffisamment souple pour suivre les mouvements des pistons et des bielles.The present invention is not limited to the embodiments precisely described, in particular the routing of the wires can be carried out in a different way and in particular along the casings of the two cylinders of the V engine.
The mechanical connection 40 and the flexible parts 16, 17, 18, 19 can be replaced by springs or any other equivalent means which is both sufficiently rigid so that the wires do not move in an anarchic fashion, and sufficiently flexible to follow movements of pistons and connecting rods.

Claims (9)

Moteur à pistons en V caractérisé en ce qu'il comporte : - une première ligne du V assurant des fonctions normales d'admission, de compression, d'explosion, et de détente, sur laquelle sont disposés des capteurs, - une deuxième ligne du V inerte, n'assurant aucune fonction de compression, ni d'explosion, comportant, à l'intérieur d'un cylindre (20), une chambre de combustion (23) à l'air libre ayant une entrée d'admission obturée, la ligne inerte étant utilisée comme support mécanique. V-piston engine characterized in that it comprises: - a first line of the V ensuring normal intake, compression, explosion, and expansion functions, on which sensors are arranged, - a second line of the inert V, ensuring no compression or explosion function, comprising, inside a cylinder (20), a combustion chamber (23) in the open air having an inlet the intake line being used as a mechanical support. Moteur à pistons en V selon la revendication 1, caractérisé en ce que la deuxième ligne du V comporte en outre un piston (21) inerte ayant une face externe (24) disposée en regard de la chambre de combustion (23) à l'air libre, et en ce que un dispositif de transmission des mesures effectuées par les capteurs est fixé sur la face externe (24) du piston (21), le dispositif de transmission des mesures étant relié aux capteurs par des fils de liaison (17).V-piston engine according to claim 1, characterized in that the second line of the V further comprises an inert piston (21) having an external face (24) arranged facing the combustion chamber (23) in the air free, and in that a device for transmitting the measurements made by the sensors is fixed to the external face (24) of the piston (21), the device for transmitting the measurements being connected to the sensors by connecting wires (17). Moteur à pistons en V selon la revendication 2, caractérisé en ce que le piston (21) est lié à une bielle (22) inerte, l'ensemble constitué par le piston (21) et la bielle (22) étant allégé de façon à compenser un apport de masse dû au dispositif de transmission des mesures.V-piston engine according to claim 2, characterized in that the piston (21) is linked to an inert connecting rod (22), the assembly consisting of the piston (21) and the connecting rod (22) being lightened so as to compensate for a mass contribution due to the measurement transmission device. Moteur à pistons en V selon la revendication 3, caractérisé en ce que, à chaque articulation entre un piston (11,21) et une bielle (12,22) associée et/ou entre deux bielles (12,22), les fils de liaison (17) sont fixés sur des pièces souples (1, 2, 3, 4)V-piston engine according to claim 3, characterized in that, at each articulation between a piston (11,21) and an associated connecting rod (12,22) and / or between two connecting rods (12,22), the wires of link (17) are fixed on flexible parts (1, 2, 3, 4) Moteur à pistons en V selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de transmission des mesures est un dispositif de télémesure comportant un émetteur (30) pourvu d'une antenne d'émission et un dispositif (31, 32) d'alimentation de l'émetteur (30).V-piston engine according to any one of the preceding claims, characterized in that the measurement transmission device is a telemetry device comprising a transmitter (30) provided with an antenna transmitter and a device (31, 32) for supplying the transmitter (30). Moteur à pistons en V selon la revendication 5, caractérisé en ce que le dispositif d'alimentation de l'émetteur (30) est un dispositif d'alimentation par induction et comporte un stator bobiné (32) fixe et un rotor bobiné (31) placé en regard du stator (32), le rotor (31) étant animé d'un mouvement rectiligne de translation.V-piston engine according to claim 5, characterized in that the transmitter supply device (30) is an induction supply device and comprises a fixed wound stator (32) and a wound rotor (31) placed opposite the stator (32), the rotor (31) being driven in a rectilinear translational movement. Moteur à pistons en V selon la revendication 6, caractérisé en ce que le stator (32) est fixé à une culasse (25) de fermeture du cylindre (20), et en ce que le rotor (31) est solidaire de l'émetteur (30).V-piston engine according to claim 6, characterized in that the stator (32) is fixed to a cylinder head (25) for closing the cylinder (20), and in that the rotor (31) is integral with the transmitter (30). Moteur à pistons en V selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le dispositif de transmission des mesures comporte une liaison mécanique (40) ayant deux extrémités fixées respectivement sur la face externe (24) du piston (21) et sur une culasse (25) de fermeture du cylindre (20), la liaison mécanique (40) étant utilisée comme support des fils de liaison (17) entre la tête du piston (21) et la culasse (25).V-piston engine according to any one of claims 1 to 4, characterized in that the measurement transmission device comprises a mechanical connection (40) having two ends fixed respectively on the external face (24) of the piston (21) and on a cylinder head (25) for closing the cylinder (20), the mechanical connection (40) being used as a support for the connection wires (17) between the piston head (21) and the cylinder head (25). Moteur à piston en V selon la revendication 8, caractérisé en ce que la longueur de la liaison mécanique (40) est au moins égale à la course du piston (21)V-piston engine according to claim 8, characterized in that the length of the mechanical connection (40) is at least equal to the stroke of the piston (21)
EP96402498A 1995-11-22 1996-11-21 V-type piston engine with measurement pickup device Expired - Lifetime EP0775816B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9513833A FR2741387B1 (en) 1995-11-22 1995-11-22 V-PISTON MOTOR PROVIDED WITH MEASUREMENT DEVICE
FR9513833 1995-11-22

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EP0775816A1 true EP0775816A1 (en) 1997-05-28
EP0775816B1 EP0775816B1 (en) 2000-03-22

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EP96402498A Expired - Lifetime EP0775816B1 (en) 1995-11-22 1996-11-21 V-type piston engine with measurement pickup device

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US (1) US5710375A (en)
EP (1) EP0775816B1 (en)
JP (1) JP3327793B2 (en)
DE (1) DE69607294T2 (en)
ES (1) ES2144713T3 (en)
FR (1) FR2741387B1 (en)

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KR20040049077A (en) * 2002-12-03 2004-06-11 현대자동차주식회사 Apparatus for measuring piston temperature
US7186094B2 (en) * 2003-03-26 2007-03-06 Gas Machinery Research Council Method and apparatus for measuring work performed by a compressor
US10225026B2 (en) 2016-06-27 2019-03-05 General Electric Company System for piston rod monitoring
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JPH09177561A (en) 1997-07-08
DE69607294T2 (en) 2000-08-10
FR2741387B1 (en) 1997-12-12
US5710375A (en) 1998-01-20
JP3327793B2 (en) 2002-09-24
FR2741387A1 (en) 1997-05-23
ES2144713T3 (en) 2000-06-16
EP0775816B1 (en) 2000-03-22
DE69607294D1 (en) 2000-04-27

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