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Mazda 13B Rotary Engine- Throttle butterfly Inletmanifold Primaryinjector Inletport Exhaustport Thermalreactor Heatexchanger Air fromair pump Secondaryinjector Airflowmeter Air filter Electronic ignition /fuel injection controlunit Silencerboxes

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.

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