| 摘要 |
1520292 Igniting part of charge by compression in IC engines TOWNSEND ENG CO 3 July 1975 [5 Aug 1974] 28138/75 Heading F1B A compression ignition I.C. engine comprises a cylinder 138 with a reciprocable piston 160, which during its compression stroke compresses a fuel/air mixture some of which is received and stored in a reservoir cavity 178 just before the piston has compressed the fuel sufficiently for ignition, the fuel remaining in the cylinder being ignited by the subsequent compression by the piston, the ignited charge causing ignition of the fuel stored in the cavity 178 when the piston has returned from its TDC position and communication between the cylinder and the cavity has been re-established. Fuel is supplied constantly to conduits 98, 100, Fig. 6, and by way of passages 106, 108, to grooves 110, 112, from which it passes via passageways 136 and openings 156, Fig. 2 to the cylinder when the piston is in an expanded position. Air is similarly supplied via conduits 76, 78, passages 84, 86, grooves 88, 90, passageways 134 and openings 154 to the cylinder. Compression is accomplished by rotation of a rotor 35 containing the cylinders and pistons so that rollers 166 follow a cam track 170. After combustion, the exhaust gases leave the cylinder via openings 158 which are slightly closer to the inner end of the cylinder than are the openings 154, 156 so that the gas-pressure in the cylinder falls before the openings 154 are opened to admit scavenging and cooling air to the cylinder. The exhaust gases and scavenging and cooling air flow out via the drive-shaft 26, Fig. 5. Forcing air into the cylinders helps to keep the rollers 166 in contact with the cam track. |
