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Pub. No.: WO/2003/008783 International Application No.: PCT/FR2002/002546
Publication Date: 30.01.2003 International Filing Date: 17.07.2002
Chapter 2 Demand Filed: 30.01.2003
IPC:
F01B 9/04 (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
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 BP 6138 F-69466 Lyon, FR
Priority Data:
010959718.07.2001FR
Title (EN) VARIABLE CYLINDER CAPACITY ENGINE
(FR) MOTEUR A CYLINDREE VARIABLE
Abstract:
(EN) The invention concerns a mechanical transmission device for a variable cylinder capacity engine comprising at least a cylinder (10) wherein moves a piston (2), which is integral in its lower portion with a transmission member (3) co-operating through a small-sized rack (37) with a roller bearing guide device (4) and through another large-sized rack (35) with a sprocket wheel (5) linked to a connecting rod (6), a control member (7) comprising a large-sized rack (73) co-operating with the sprocket wheel (5), means for fixing (24, 31) the piston (2) on the transmission member (3) which provide a preload for clamping it and ensure its centring, linking means (11, 12; 71, 72) for rigidifying the transmission (3) and control (7) members and for increasing the flexural strength of the teeth of the large-sized racks (35, 73), and means for lightening (56) the sprocket wheel (5) which maintain its rigidity and load capacity.
(FR) Le dispositif de transmission mécanique pour moteur a cylindrée variable suivant la présente invention comprend au moins un cylindre (10) dans lequel se déplace un piston (2), qui est solidaire dans sa partie inférieure d' un organe de transmission (3) coopérant, d'une part au moyen d'une crémaillère de faible dimension (37) avec un dispositif de guidage a roulement (4), et d'autre part au moyen d'une autre crémaillère de forte dimension (35) avec une roue dentée (5) liée a une bielle (6), un organe de commande (7) comprenant une crémaillère de forte dimension (73) coopérant avec la roue dentée (5), des moyens de fixation (24, 31) du piston (2) sur l'organe de transmission (3) qui offrent une précontrainte de serrage et assurent son centrage, des moyens de liaison (11, 12; 71, 72) qui permettent de rigidifier les organes de transmission (3) et de commande (7) et d' augmenter la résistance a la flexion des dents des crémaillères de forte dimension (35, 73), et des moyens d'allegement (56) de la roue dentée (5) qui préservent sa rigidité et sa capacité de charge.
front page image
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, OM, PH, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)