Developed Technologies of the New Rotary Engine (RENESIS)

Masaki Ohkubo, Seiji Tashima, Ritsuharu Shimizu, Suguru Fuse, Hiroshi Ebino
2004 SAE Technical Paper Series   unpublished
The newly developed rotary engine has achieved major progress in high performance, improved fuel economy and clean exhaust gas by innovative action. The engine of the next generation is named RENESIS, which stands for "The RE (Rotary Engine)'s GENESIS" or the rotary engine for the new millennium. The peripheral exhaust port of the previous rotary engine is replaced by a side exhaust port system in the RENESIS. This allows for an increase in the intake port area, thus producing higher power.
more » ... g higher power. Exhaust opening timing is retarded to improve thermal efficiency. The side exhaust port also allows reducing the internal EGR, stabilizing the combustion at idling. The improved thermal efficiency and the stabilized idle combustion result in higher fuel economy. In addition, the side exhaust port allows a reduction of the HC mass, realizing reduced exhaust gas emission. A Sequential Dynamic Air Intake System is adopted which optimizes air intake depending on the actual engine speed range, producing high torque ranging from low to high engine speeds. Gas seals were optimized for the side exhaust port RE.
doi:10.4271/2004-01-1790 fatcat:5mahids7s5bh7aa77xjetu2rzy