Development on Exhaust Emissions and Fuel Economy of the Rotary Engine at Toyo Kogyo

The fuel economy was sharply improved from our 1976 model rotary engine cars mainly through modifications to the engine and improvements in the reactivity of the thermal reactor system.

The progress of our development on these items of improvement and their effects are presented in this paper.

Our advance program includes several development items in addition to the above, and the progress of development on these items and their future prospects are also presented.