Two=stroke engine power-increasing system - has diaphragm shutting off scavenge passage inlet from crankcase

摘要

The system increases the power developed by a two-stroke engine, particularly at low and medium speed. To accelerate the mixture inflow through the scavenge ports (12) a diaphragm (10) is mounted in the scavenge passage inlet (13), shutting it off from the crankcase (5-7), so that the mixture can only flow upwards. When the scavenge ports are shut off by the rising piston (6), the vacuum generated in the crankcase is applied via a further diaphragm (8) to the carburettor. FL.