Abstract

<div class="htmlview paragraph"> </div> <div class="htmlview paragraph"> </div> <div class="htmlview paragraph">This paper describes new 2 stroke fuel injected spark ignition outboard motor equipped with unique oxygen sensor feed back control system to assure constantly optimized air/fuel ratio.</div> <div class="htmlview paragraph"> </div> <div class="htmlview paragraph">First, the general concept and the engineering target of commercial model are explained, and then the design and arrangement of oxygen sensor feedback fuel injection control system are described. Common automotive oxygen sensor is utilized in this system, and it is devised to overcome the problems inherent in 2-stroke engines.</div> <div class="htmlview paragraph"> </div> <div class="htmlview paragraph">This paper also describes the controlled combustion system that enhances consistent and stable performance, and improves fuel efficiency.</div> <div class="htmlview paragraph"> </div> <div class="htmlview paragraph">Applying these technologies, 40% less fuel consumption in cruise range was demonstrated by the comparative test with conventional fuel injected 2-stroke model.</div> <div class="htmlview paragraph"> </div>

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