GAS JET FLUID BARRIER FOR TWO CYCLE ENGINES

摘要

A system capable of avoiding or limiting the leakage of the fresh gases of a two-cycle internal-combustion engine during the exhaust/transfer stroke consists of a (pressurized) fluid barrier provided by various devices and positioned downstream of the exhaust port in the cylinder exhaust channel. In the embodiment disclosed the fluid barrier is formed by a gas jet from a pneumatic circuit provided with pressure accumulator that takes exhaust gases from the exhaust pipe of the engine and lets them crosswise in the exhaust channel of the engine' s cylinder downstream of the exhaust port through a nozzle .