| 摘要 |
The invention refers to carburellors for crankcase scavenged two-stroke engines utilizing additional air that is led via scavenging ducts into the combustion chamber of the engine. More particularly it refers to a flange assembly for supporting an additional air supply at a carburetor (17), said flange assembly comprising:
a rear flange (14) preferably embodied as a thin-body flange (14) installed upon an end surface of a receiving carburettor (17) having a primary air duct (2); as an inlet duct for air through the carburettor to the engine;
the primary air duct extending through said flange (14) for alignment with the air intake of the receiving carburettor for establishing fluid communication there between;
an additional air duct (3) for additional air supply is extending through said flange (14) and having an air aperture in said flange, which aperture is spaced apart from an aperture for the primary air duct in the flange (14); and
a valve assembly operatively coupled to said flange and having a valve element positioned at said additional air aperture for opening and closing said additional air aperture.
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