| 摘要 |
PURPOSE:To prevent blow-by of fuel-air mixture, by supplying only air when the exhaust port and the scavenge port of a two cycle engine are overlapped, and injecting fuel-air mixture into a cylinder wherein the mixture is compressed near the closing time of the exhaust port. CONSTITUTION:Only air is supplied from a scavenge port to a two cycle engine 1 via a throttle valve 3. And fuel-air mixture from a carbureter 4 is compressed by a compressor 2 which is driven by being connected to the engine 1 with a coupling 9, so that the mixture is injected into a cylinder via a delivery valve 6, a fuel pipe 10 and an injection nozzle 7. The timing of the injection is such that the fuel-air mixture is injected near the closing time of an exhaust port after the scavenge port is closed by a piston.
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