(under subclass 339.1) Subject matter comprising a combustion chamber having a space therein, a combustible mixture containing an oxidant and a fuel, and wherein the minimum output shaft operating speed is adjusted and the relative proportion of oxidant and fuel in the combustible mixture which is fed to the combustion space or chamber is varied according to a sensed parameter indicative of the proportion
of oxidant in the mixture.
(1) Note. The parameter sensed may be indicative of an amount of a component of the combustible mixture fed to the combustion chamber or an amount of a component of the exhaust gas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
344, for a device for controlling the engine speed by varying the air-fuel ratio.
680, for a charge-forming device which is responsive to engine exhaust gas condition and idling condition.
704, for a charge-forming device which is responsive to a sensed air-fuel ratio prior to combustion.
