Super stupid question: Why does our header have 3 runners (primary pipes)?
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SIDE INTAKE/SIDE EXHAUST PORTS
The key technology of RENESIS is its side exhaust port configuration, with the exhaust ports relocated to the rotary chamber side housing, where the intake ports are also located.
The chief advantage of this layout is that it allows elimination of intake/exhaust port timing overlap. This measure ensures that exhaust gas is not retained and carried over to the next intake cycle, thereby promoting more stable combustion and better fuel economy. *** The engine also has two exhaust ports per rotor chamber ****, giving RENESIS almost twice the exhaust port area of its predecessor. With ample exhaust port area assured, delaying the opening of the exhaust ports affords RENESIS a longer expansion cycle, for improved thermal efficiency, power output and fuel economy.
Another major advantage of the side exhaust port is that it allows engineers more freedom to optimize port profiles. With RENESIS, both the six-port High Power version and four-port Standard Power version have almost 30% more intake port cross-sectional area than the previous engine. Additionally, the intake port close timing has been extended, resulting in increased charging volume and more power.
Rotarynews.com
Last edited by Huey52; 02-14-2008 at 02:15 PM.
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