F - Mech Eng,Light,Heat,Weapons – 02 – B
Patent
F - Mech Eng,Light,Heat,Weapons
02
B
F02B 23/04 (2006.01) F02B 41/00 (2006.01) F02B 43/04 (2006.01) F02B 75/02 (2006.01) F02B 77/11 (2006.01)
Patent
CA 2214976
A novel, internal combustion engine includes a cylinder, a head closing one end of the cylinder and a piston slidably mounted in the cylinder for reciprocating motion, in the usual manner, which reciprocation is converted into rotary motion by, for example, a conventional crankshaft. The top surface of the piston, cylinder head and cylinder serve as walls defining a system chamber, with a pocket formed in one of the system chamber walls for receiving fuel and serving as a combustion chamber for localized combustion therein. In one disclosed embodiment, the cylinder is divided into two sections with thermal insulation, serving as a heat barrier, disposed between the two sections and the piston has a hollow interior containing one or more heat shields spanning the hollow interior. The method of operation involves injection of fuel into a restricted area within the chamber defined between the piston head, cylinder head and cylinder, e.g., the aforementioned pocket. Air and/or exhaust gas within the chamber surrounding the restricted area of localized combustion serves as thermal insulation, protecting the cylinder walls. Operation is suitably with a peak gas temperature of 900-1100°C and a peak gas pressure of 500-1000 psi. Air is introduced in an amount providing 4-5 times the stoichiometric amount of oxygen.
L'invention concerne un moteur à combustion interne comprenant uncylindre (21), une tête de cylindre (58) fermant une extrémité dudit cylindre (21), ainsi qu'un piston (24) monté coulissant dans le cylindre (22) où il effectue un mouvement de va-et-vient de façon classique, ce mouvement de va-et-vient étant transformé en un mouvement de rotation, par exemple par un vilebrequin classique. La surface supérieure (32) du piston (24), la tête de cylindre (58) et le cylindre (21) constituent les parois définissant une chambre de système (70), une poche (36) étant formée dans une de ces parois pour recevoir le carburant et servir de chambre de combustion (70) dans laquelle s'effectue une combustion localisée. Dans un mode de réalisation décrit, le cylindre (21) est divisé en deux segments (21, 22) pourvus d'une isolation thermique (14, 30) servant de barrière thermique entre les deux segments (21, 22), et le piston (24) comporte un intérieur creux contenant au moins un écran thermique (41, 42) s'étendant transversalement dans ledit intérieur creux.
Hill & Schumacher
U.s. Environmental Protection Agency
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