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Mazda 13B Rotary Engine

Mazda 13B Rotary Engine Throttle butterfly Inlet manifold Primary injector Inlet port Exhaust port Thermal reactor Heat exchanger Air from air pump Secondary injector Airflow meter Air filter Electronic ignition / fuel injection control unit Silencer boxes

The induction, engine and exhaust layout of the Mazda 13B rotary engine. This engine has electronic fuel injection with two fuel injectors per rotor. The primary injectors work all the time, while the secondaries only come into operation under increased engine speed or load. Exhaust emissions are cut by using a thermal reactor to heat up the outgoing gases โ€”the heat being supplied by a heat exchanger further down the exhaust pipe.