EP0775816B1 - 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
EP0775816B1
EP0775816B1 EP96402498A EP96402498A EP0775816B1 EP 0775816 B1 EP0775816 B1 EP 0775816B1 EP 96402498 A EP96402498 A EP 96402498A EP 96402498 A EP96402498 A EP 96402498A EP 0775816 B1 EP0775816 B1 EP 0775816B1
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EP
European Patent Office
Prior art keywords
piston
engine according
measurements
secured
cylinder
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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 - Lifetime
Application number
EP96402498A
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German (de)
French (fr)
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EP0775816A1 (en
Inventor
Christian Marie Michel Roger
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Safran Transmission Systems SAS
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Hispano Suiza SA
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    • 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 device. It applies in particular, in a phase of development of a motor to pistons in V, to evaluate the thermal behavior and piston and / or connecting rod dynamics when the engine is Operating.
  • the invention consists in not making operate normally only one line of the engine V which therefore performs repetitions of cycles with four phases: intake, compression, explosion, expansion, and to be performed measurements on this line. Measurements are carried out by sensors arranged on the piston and / or on the connecting rod of the operating line.
  • the second line of V is made inert by placing the combustion chamber of this line in the open air and closing off its gas intake inlet.
  • This second line of V is used as a mechanical support on which are attached sensor connecting wires.
  • a device for transmission of the measurements made by the sensors is fixed on 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 device transmission can be for example a telemetry over the air with a recording device measures arranged outside the engine.
  • the device transmission can also be a flexible mechanical connection or articulated to connect the connecting wires of sensors at the cylinder head of the inert line, the wires being then connected to the measurement recording device located outside the engine.
  • Figure 1 schematically shows a sectional view of a set of two lines of a V-engine fitted with a device 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 further comprises two valves 14,15 for gas intake and exhaust. 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 made 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 to support the connecting wires 17 sensors and as a support for a transmission of measurements to a recording device measures placed outside the engine and not shown in figure 1.
  • the device for transmitting measurements is a device for telemetry fixed on the external face 24 of the inert piston 21, this face being arranged opposite the chamber of therefore combustion in the open air and at room temperature.
  • the additional mass provided by the transmission should be as low as possible so that do not reduce engine performance or bring different engine components (piston, connecting rod, crankshaft) out.
  • 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 probes to eddy currents.
  • 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 a sealed passage, not shown, made in the head of the piston 21.
  • the telemetry device comprises a transmitter 30 provided a transmitting antenna, the transmitter being fixed on the face external 24 of the piston 21 and powered by induction or by battery.
  • Induction power is obtained for example by means an assembly consisting of a wound stator 32 and a rotor wound 31, the stator 32 being fixed, the rotor 31 being placed opposite stator 32 and driven by 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 made by the sensors are processed by the transmitter 30 and transmitted for example by radio waves, by means from the transmitting antenna to the recorder located at outside the engine.
  • Figure 2 schematically shows a sectional view of the head of the inert piston fitted with a transmission device measurements, according to a second embodiment of the invention.
  • the device for transmitting 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 cylinder 20.
  • the mechanical connection 40 has two ends fixed respectively on the face external 24 of the piston 21 and on the plate 25.
  • the measurements are then sent to a recorder 26 external only by the wires 17 connecting the sensors.
  • the mechanical connection 40 is used as a support for the wires link 17 between the piston head 21 and the cylinder head 25 and its length is at least equal to that of the piston stroke 21.
  • a sealed passage in the head of the piston 21 allows to the connecting wires to pass through the head of the piston 21.
  • the connecting wires are then routed, being glued on the mechanical link 40, to the external recorder 26 by through a second sealed passage practiced in cylinder head 25 for closing 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 manner, 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)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

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 device. It applies in particular, in a phase of development of a motor to pistons in V, to evaluate the thermal behavior and piston and / or connecting rod dynamics when the engine is Operating.

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.The measurement on a connecting rod or a piston is made difficult if not impossible in a V-piston engine operation. Indeed, the small footprint available around the piston / rod kinematics, but also the temperature, speed and lubrication represent big constraints to make connections by wire or for the implementation of a telemetry between the whole piston / connecting rod and cylinder head or crankcase.

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 not making operate normally only one line of the engine V which therefore performs repetitions of cycles with four phases: intake, compression, explosion, expansion, and to be performed measurements on this line. Measurements are carried out 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 V is made inert by placing the combustion chamber of this line in the open air and closing off its gas intake inlet. This second line of V is used as a mechanical support on which are attached sensor connecting wires. A device for transmission of the measurements made by the sensors is fixed on 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 device transmission can be for example a telemetry over the air with a recording device measures arranged outside the engine. The device transmission can also be a flexible mechanical connection or articulated to connect the connecting wires of sensors at the cylinder head of the inert line, the wires being then connected to the measurement recording device located 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 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 apparaítront 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.Figure 1 schematically shows a sectional view of a set of two lines of a V-engine fitted with a device 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 Figure 1, the first line further comprises two valves 14,15 for gas intake and exhaust. 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 made 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 to support the connecting wires 17 sensors and as a support for a transmission of measurements to a recording device measures placed outside the engine and not shown in figure 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 measurements is a device for telemetry fixed on the external face 24 of the inert piston 21, this face being arranged opposite the chamber of therefore combustion in the open air and at room temperature. The additional mass provided by the transmission should be as low as possible so that do not reduce engine performance or bring different engine components (piston, connecting rod, crankshaft) out.

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 prevent 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 probes to eddy currents.

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 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 a transmitting antenna, the transmitter being fixed on the face external 24 of the piston 21 and powered 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.Induction power is obtained for example by means an assembly consisting of a wound stator 32 and a rotor wound 31, the stator 32 being fixed, the rotor 31 being placed opposite stator 32 and driven by 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 made by the sensors are processed by the transmitter 30 and transmitted for example by radio waves, by means from the transmitting antenna to the recorder located at 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.Figure 2 schematically shows a sectional view of the head of the inert piston fitted with a transmission device 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 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 cylinder 20. The mechanical connection 40 has two ends fixed respectively on the face external 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 sent to a recorder 26 external only by the wires 17 connecting the sensors. The mechanical connection 40 is used as a support for the wires link 17 between the piston head 21 and the cylinder head 25 and its length is at least equal to that of the piston stroke 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 to the connecting wires to pass through the head of the piston 21. The connecting wires are then routed, being glued on the mechanical link 40, to the external recorder 26 by through a second sealed passage practiced in cylinder head 25 for closing 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 manner, and sufficiently flexible to follow movements of pistons and connecting rods.

Claims (9)

  1. A V-type piston engine, characterised in that it comprises:
    a first row of the V which performs the normal functions of suction, compression, explosion and expulsion and on which sensors are disposed, and
    an inert second row of the V not performing any compression or explosion function and comprising in a cylinder (20) a combustion chamber (23) which communicates with atmosphere and which has its inlet port closed, the inert row being used as a mechanical support.
  2. An engine according to claim 1, characterised in that the second row of the V also comprises a piston (21) having an outer face (24) facing the combustion chamber (23) and in that means for transmitting the measurements made by the sensors is secured to the outer face (24) of the piston (21) and is connected to the sensors by connecting wires (17).
  3. An engine according to claim 2, characterised in that the piston (21) is connected to a connecting rod (22), the assembly consisting of the piston (21) and conneting rod (22) being lightened to compensate for the additional weight of the measurements-transmitting means.
  4. An engine according to claim 3, characterised in that at each articulation between a piston (11, 21) and associated connecting rod (12, 22) and/or between two connecting rods (12, 22) the connecting wires (17) are secured on flexible members (1, 2, 3, 4).
  5. An engine according to any of the previous claims, characterised in that the measurements-transmitting means is a telemetric device comprising a transmitter (30) having a transmitting antenna and power supply means (31, 32) for the transmitter (30).
  6. An engine according to claim 5, characterised in that the power supply means (31, 32) is inductive and comprises a stationary wound stator (32) and a wound rotor (31) disposed opposite the stator (32), the rotor (31) being movable rectilinearly.
  7. An engine according to claim 6 ,characterised in that the stator (32) is secured to a cylinder head (25) closing the cylinder (20) and the rotor (31) is rigidly secured to the transmitter (30).
  8. An engine according to any of claims 1 to 4, characterised in that the measurements-transmitting means comprises a mechanical connection (40) having one end secured to the outer face (24) of the piston (21) and the other end secured to a cylinder head ( 25) closing the cylinder (20), the mechanical connection (40) being used as a support for the connecting wires (17) between the crown of the piston (21) and the cylinder head (25),
  9. An engine according to claim 8, characterised in that the length of the mechanical connection (40) is at least equal to the travel 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

Publications (2)

Publication Number Publication Date
EP0775816A1 EP0775816A1 (en) 1997-05-28
EP0775816B1 true 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

Country Status (6)

Country Link
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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US5987974A (en) * 1998-01-14 1999-11-23 Mission Valley Ford Truck Sales, Inc. Portable cylinder contribution tester for a vehicle which includes a diesel engine which is controlled by an electronic circuit
KR100326084B1 (en) * 1999-12-02 2002-03-07 이계안 Wire take-out device for piston quality test
DE10100380A1 (en) * 2001-01-05 2002-08-01 Man B & W Diesel Ag Measurement of the relative movement of gudgeon pin bearing and piston rod head in a large diesel engine by use of inductive sensors attached to a signal housing on the machined surface of one or other component
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
US10200089B2 (en) 2017-06-07 2019-02-05 General Electric Company Sensor system and method
AT520724B1 (en) * 2018-05-16 2019-07-15 Lec Gmbh Piston of a piston engine

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US4633707A (en) * 1982-09-13 1987-01-06 Jodon Engineering Associates, Inc. Method and apparatus for measuring engine compression ratio, clearance volume and related cylinder parameters
US4468956A (en) * 1982-10-26 1984-09-04 Merlo Angelo L Method and apparatus for utilizing microwaves for internal combustion engine diagnostics
US5106202A (en) * 1990-12-18 1992-04-21 Board Of Control Of Michigan Technological University Apparatus for measuring the temperature of a piston in an internal combustion engine
GB2254969A (en) * 1991-04-19 1992-10-21 C S E Electro mechanical linkage

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DE69607294T2 (en) 2000-08-10
ES2144713T3 (en) 2000-06-16
EP0775816A1 (en) 1997-05-28
FR2741387B1 (en) 1997-12-12
JPH09177561A (en) 1997-07-08
US5710375A (en) 1998-01-20
FR2741387A1 (en) 1997-05-23
JP3327793B2 (en) 2002-09-24
DE69607294D1 (en) 2000-04-27

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