| 摘要 |
PURPOSE:To prevent an oil dilution, by furnishing two suction valves at each combustion cylinder, through one of which is inhaled a mixed gas and through the other is inhaled the air from a supercharging cylinder, and inhaling the air from an air cleaner to the supercharging cylinder. CONSTITUTION:In an engine where the first and third cylinders are composed as sour-cycle engines while the second cylinder is as a two-cycle compressor, two pairs of suction valves 8, 8a and 9, 9a are furnished at the first and the third cylinders respectively. Of these suction valves, suction valves 8 and 9 are connected to a carburetor 5 to inhale the mixed gas. The other valves 8a and 9a are connected to the exhaust pipe 7 of the second cylinder to feed a compressed air. The suction valve 6 of the second cylinder is connected to an air cleaner 15 to inhale a clean air. Therefore, since the second cylinder does not inhale the mixed gas, no oil dilution is produced, and a reverse rotation of the second cylinder can be also prevented.
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