| 摘要 |
1,145,945. Supercharged I. C. engines. SULZER BROS. Ltd. Sept. 27, 1967 [Oct. 11, 1966], No.44008/67. Heading F1B. In a two-stroke I. C. engine with a free-running exhaust gas turbine-driven supercharger 11 common to a number of cylinders and arranged to supply air to a piston pump chamber 16 of each cylinder 1 via an air reservoir 14 common to the number of cylinders, each piston pump is arranged to supply air through non-return valves 17 into a respective air chamber 18 communicating with the cylinder through scavenging ports 5. The piston pumps produce a pressure rise 1À1 to 1À3 times the pressure supplied thereto and an auxiliary blower 22 common to the cylinders is connected in parallel with the piston pumps to supply air to the air chambers 18 from the common air reservoir 14. The auxiliary blower 22 is driven by a constant speed electric motor (30), Fig. 3 (not shown), arranged to be switched off by a pressure sensing element (31) when the pressure in the air reservoir 14 is above a certain value. The air from the supercharger 11 is passed through a radiator 13 and the exhaust gases from the cylinders are discharged through exhaust ports 6 to a common exhaust reservoir 8. A plurality of turbo-superchargers may be provided and a partition or partitions located in the reservoir 14. The engine is of the crosshead type. |
