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1. (WO2014162141) OPPOSED STEPPED PISTON ENGINE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2014/162141 International Application No.: PCT/GB2014/051049
Publication Date: 09.10.2014 International Filing Date: 04.04.2014
IPC:
F01B 7/04 (2006.01) ,F01B 7/18 (2006.01) ,F02B 75/28 (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
7
Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
02
with oppositely reciprocating pistons
04
acting on same main shaft
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
7
Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
18
with differential piston
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
28
Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
Applicants:
OSP ENGINES LIMITED [GB/GB]; 8 Laurence Pountney Hill London EC4R 0BE, GB
Inventors:
PIRAULT, Jean-Pierre; GB
VESHAGH, Ali; GB
Agent:
FORRESTERS; Rutland House 148 Edmund Street Birmingham B3 2JA, GB
Priority Data:
1306179.105.04.2013GB
Title (EN) OPPOSED STEPPED PISTON ENGINE
(FR) MOTEUR À PISTONS EN GRADINS OPPOSÉS
Abstract:
(EN) With reference to Figure 2, the invention relates to an opposed piston engine comprising a stepped cylinder providing a portion of lesser diameter and a portion of greater diameter, the portion of lesser diameter providing a combustion volume formed between a first and a second power piston operable to expand and compress the combustion volume, and the portion of greater diameter providing a first and a second air transfer volume, the engine comprising an air port for intake of air into the combustion volume from an air delivery passage, and an exhaust port for exhausting gases from the combustion volume, one of the power pistons acting as the air piston controlling opening and closing of the air port and the other power piston acting as the exhaust piston controlling opening and closing of the exhaust port, wherein at least one of the first and second power pistons is a stepped piston providing a double-sided air transfer piston having a forward side and a reverse side, configured such that the forward side compresses and expands the first air transfer volume and the second side compresses and expands the second air transfer volume, wherein each of the first and second air transfer volumes is fluidly connected to the air delivery passage.
(FR) En référence à la figure 2, l'invention concerne un moteur à pistons opposés comprenant un cylindre en gradins pourvu d'une partie de diamètre inférieur et d'une partie de diamètre supérieur, la partie de diamètre inférieur fournissant un volume de combustion formé entre un premier et un second piston récepteur utilisables pour étendre et comprimer le volume de combustion, et la partie de diamètre supérieur fournissant un premier et un second volume de transfert d'air, le moteur comprenant un orifice d'air pour l'admission d'air dans le volume de combustion depuis un passage de fourniture d'air, et un orifice d'échappement pour l'échappement des gaz du volume de combustion, l'un des pistons récepteurs agissant comme piston d'air commandant l'ouverture et la fermeture de l'orifice d'air et l'autre piston récepteur agissant comme piston d'échappement commandant l'ouverture et la fermeture de l'orifice d'échappement, au moins l'un du premier et du second piston récepteur étant un piston en gradins fournissant un piston de transfert d'air double face possédant une face avant et une face arrière, conçu de telle sorte que la face avant comprime et détend le premier volume de transfert d'air et que la seconde face comprime et détend le second volume de transfert d'air, chacun du premier et du second volume de transfert d'air étant relié de manière fluidique au passage de fourniture d'air.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)