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1. (WO1998051911) DEVICE FOR VARYING A PISTON ENGINE EFFECTIVE VOLUMETRIC DISPLACEMENT AND/OR VOLUMETRIC RATIO OF DURING ITS OPERATION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/051911 International Application No.: PCT/FR1998/000918
Publication Date: 19.11.1998 International Filing Date: 07.05.1998
Chapter 2 Demand Filed: 09.12.1998
IPC:
F01B 9/04 (2006.01) ,F01L 1/348 (2006.01) ,F02B 75/04 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
B
MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
9
Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to groups F01B1/-F01B7/181
04
with rotary main shaft other than crankshaft
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
L
CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1
Valve-gear or valve arrangements, e.g. lift-valve gear
34
characterised by the provision of means for changing the timing of the valves without changing the duration of opening
344
changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
348
by means acting on timing belts or chains
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
B
INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
75
Other engines, e.g. single-cylinder engines
04
Engines with variable distances between pistons at top dead-centre positions and cylinder heads
Applicants:
RABHI, Vianney [FR/FR]; FR
Inventors:
RABHI, Vianney; FR
Agent:
GARIN, Etienne; Roosevelt Consultants 109, rue Sully Boîte postale 6138 F-69466 Lyon Cedex 06, FR
Priority Data:
97/0594309.05.1997FR
98/0460107.04.1998FR
Title (EN) DEVICE FOR VARYING A PISTON ENGINE EFFECTIVE VOLUMETRIC DISPLACEMENT AND/OR VOLUMETRIC RATIO OF DURING ITS OPERATION
(FR) DISPOSITIF PERMETTANT DE FAIRE VARIER LA CYLINDREE ET/OU LE RAPPORT VOLUMETRIQUE EFFECTIFS D'UN MOTEUR A PISTONS PENDANT SON FONCTIONNEMENT
Abstract:
(EN) The invention concerns a device for improving the global performance of internal combustion piston engines with variable charge and range by adapting while running their volumetric displacement and/or their volumetric ratio. The modification of the engine effective volumetric displacement is operated by delivering into the induction pipe fresh gases supplied in excess in the cylinder and by controlling the length of the stroke used to compress the gases by means of a supplementary induction valve (15) with variable closing retard. The adjustment of the engine effective volumetric ratio is operated by modifying the initial position of the piston (1) stroke relative to the cylinder by means of a valve gear (14) mounted free at the connecting rod (13) end, of a rack (10) integral with the piston (1) and of a control rack (11) the position of which is controlled by a control device (12) The invention is particularly applicable to motor vehicle engines.
(FR) L'invention concerne un dispositif servant à améliorer le rendement global des moteurs à combustion interne à pistons utilisés à charge et régime variables par adaptation en marche de leur cylindrée et/ou de leur rapport volumétrique. La modification de la cylindrée effective du moteur s'opère par refoulement dans la tubulure d'admission des gaz frais admis en excès dans le cylindre et par contrôle de la longueur de course utilisée pour compresser les gaz par le biais d'une soupape d'admission additionnelle (15) à retard fermeture variable. L'ajustement du rapport volumétrique effectif du moteur s'opère en modifiant la position d'origine de la course du piston (1) par rapport au cylindre par le biais d'un engrenage (14) monté libre à l'extrémité supérieure de la bielle (13), d'une crémaillère (10) solidaire du piston (1) et d'une crémaillère de commande (11) dont la position est contrôlée par un dispositif de contrôle (12). Le dispositif selon l'invention est particulièrement destiné aux moteurs d'automobiles.
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Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, GW, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)
Also published as:
KR1020010012405EP0980466US6354252JP2001525032 CA2289568AU1998076609