Sachs-dolmar Gmbh

Sachs Systemtechnik Gmbh

Norbert Kania

Volker Bohlmann

High-speed, port-controlled, two-stroke internal combustion engine with

The invention relates to a method and to a port-controlled two-stroke internal combustion engine in which the cross-sections of the intake and outlet are so constructed in the direction of the longitudinal axis of the cylinder that in the case of an upward or downward movement of the piston, the noise-generating intake and outlet pressure gradients and amplitudes are reduced by the gradual opening of the particular intake and outlet, the piston lower edge and intakes having special constructions.

Method to reduce noise in the operation of port-controlled, two-stroke

Apparatus for reducing intake noise is characterized in that the casing is provided with an air intake connection whose one end extends into the inner area of the casing and with a carburettor connection whose one end extends into the inner area of the casing and whose inlet faces the outlet of the air intake connection located in the inner area of the casing accompanied by the formation of a space having a width approximately corresponding to half the diameter of the connection which has the same diameter.

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Hanover, Germany

Norbert Kania