Gas-exchange system for two-stroke engine - uses pre-compressed combustion air to provide second rinsing cycle provided via inlet valve controlled by differential pressure

摘要

The gas exchange system uses entry and exit slits controlled by the piston adjacent to its lower dead-point within the engine cylinder, for rinsing the combustion space, which is supplied with a controlled quantity of fuel and pre-compressed combustion air provided by an inlet valve, adjacent the ignition point. The pre-compressed combustion air provides a second rinsing of the combustion gases, with the air quantity controlled by the pressure difference across the inlet valve, the latter itself operated by the inlet valve. ADVANTAGE - Good fuel economy and low exhaust emissions.