By making the most of the rotary engine's great appeal of acceleration feel, the new RENESIS delivers not only high performance but high fuel economy and clean exhaust gas as well. The peripheral exhaust port of a previous rotary engine has been replaced with a side exhaust port system. This allows an intake port area to increase by 30%, thus producing high power. Exhaust opening timing is retarded to improve thermal efficiency. The side exhaust port also allows the internal EGR to be reduced, stabilizing combustion at idle. The improved thermal efficiency and the stabilized idle combustion improve fuel economy. In addition, the side exhaust port provides the reduction in the HC mass, thereby realizing improved exhaust gas emissionability.
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