peculiar to engines having other non-fuel gas added to combustion air

Full Title

Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas > peculiar to engines having other non-fuel gas added to combustion air

Child Classifications

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• F02D 21/08 the other gas being the exhaust gas of engine
• F02D 21/10 having secondary air added to the fuel-air mixture