Wankel Rotary Combustion Engines
Yanmar Diesel, a Japanese engine maker, was pioneer in introducing reed valves for flow control at intake ports of its small Wankel engines, showing an improvement in torque and performances at low rpm and under partial load of engine. Toyota, that discovered the benefits of injecting fresh air into the Wankel RCE exhaust port, used also a reed valve in the prototypes where they tested the SCRE concept (Stratified Charge Rotary Engine), however, this kind of intake port arrangement never reached the production line for automobile size RCEs. According to David W. Garside, who developed the Norton line of Wankel-powered motorcycles, data from other RCE producers pointed that reed valves do improve performances at low rpm and under partial load, but reduce the high speed power output of the engine, a feature considered non-convenient for motorcycle engines.
Read more about this topic: Reed Valve
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