EP0775816B1 - Moteur à pistons en V muni d'un dispositif de prise de mesures - Google Patents
Moteur à pistons en V muni d'un dispositif de prise de mesures Download PDFInfo
- 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
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- engine according
- measurements
- secured
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005259 measurement Methods 0.000 title claims description 19
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000004880 explosion Methods 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 230000001939 inductive effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 7
- 230000006698 induction Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 235000021183 entrée Nutrition 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
Images
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 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.
Landscapes
- 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)
Description
- 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.
- 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.
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.
Dans ces conditions, seul un demi-moteur fonctionne.
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.
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.
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.
- 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).
- 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.
- 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)
- 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).
- 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.
- 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).
- 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).
- 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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9513833 | 1995-11-22 | ||
FR9513833A FR2741387B1 (fr) | 1995-11-22 | 1995-11-22 | Moteur a pistons en v muni d'un dispositif de prise de mesures |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0775816A1 EP0775816A1 (fr) | 1997-05-28 |
EP0775816B1 true EP0775816B1 (fr) | 2000-03-22 |
Family
ID=9484796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96402498A Expired - Lifetime EP0775816B1 (fr) | 1995-11-22 | 1996-11-21 | Moteur à pistons en V muni d'un dispositif de prise de mesures |
Country Status (6)
Country | Link |
---|---|
US (1) | US5710375A (fr) |
EP (1) | EP0775816B1 (fr) |
JP (1) | JP3327793B2 (fr) |
DE (1) | DE69607294T2 (fr) |
ES (1) | ES2144713T3 (fr) |
FR (1) | FR2741387B1 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 (ko) * | 1999-12-02 | 2002-03-07 | 이계안 | 피스톤 특성 시험을 위한 신호선 인출장치 |
DE10100380A1 (de) * | 2001-01-05 | 2002-08-01 | Man B & W Diesel Ag | Verfahren und Vorrichtung zur Erfassung von Relativbewegungen zwischen Pleuellagerkopf und Kolbenbolzenbuchse |
KR20040049077A (ko) * | 2002-12-03 | 2004-06-11 | 현대자동차주식회사 | 피스톤 온도 측정장치 |
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 (de) * | 2018-05-16 | 2019-07-15 | Lec Gmbh | Kolben einer Kolbenmaschine |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
-
1995
- 1995-11-22 FR FR9513833A patent/FR2741387B1/fr not_active Expired - Fee Related
-
1996
- 1996-11-21 DE DE69607294T patent/DE69607294T2/de not_active Expired - Fee Related
- 1996-11-21 ES ES96402498T patent/ES2144713T3/es not_active Expired - Lifetime
- 1996-11-21 EP EP96402498A patent/EP0775816B1/fr not_active Expired - Lifetime
- 1996-11-21 US US08/754,794 patent/US5710375A/en not_active Expired - Fee Related
- 1996-11-22 JP JP31228996A patent/JP3327793B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP3327793B2 (ja) | 2002-09-24 |
DE69607294T2 (de) | 2000-08-10 |
DE69607294D1 (de) | 2000-04-27 |
FR2741387A1 (fr) | 1997-05-23 |
US5710375A (en) | 1998-01-20 |
JPH09177561A (ja) | 1997-07-08 |
EP0775816A1 (fr) | 1997-05-28 |
ES2144713T3 (es) | 2000-06-16 |
FR2741387B1 (fr) | 1997-12-12 |
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