| 摘要 |
A small watercraft includes an internal combustion engine having an air induction system that minimizes the volume of water delivered to the combustion chambers and maintains a generally low center of gravity. The induction system includes an intake silencer which is divided into an upstream chamber and a downstream chamber. The chambers communicate with each other through a passageway. The upstream chamber has an inlet for drawing air from the engine compartment, and the downstream chamber has an outlet communicating through a conduit with an intake chamber. The inlet and outlet are positioned in an upper portion of the silencer and the passageway is positioned in a lower portion of the silencer. Thus, air flowing through the silencer must change direction and water in the air will be separated from the air flow and deposited on the inner walls of the silencer. Each of the upstream and downstream chambers has a drain port through which water may be evacuated. a plurality of intake pipes extend generally upwardly from the intake chamber and communicate with corresponding combustion chambers.
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