Fuel/air ratio control apparatus for a reciprocating...

Details Fuel/air ratio control apparatus for a reciprocating... Fuel/air ratio control apparatus for a reciprocating...

F - Mech Eng,Light,Heat,Weapons

02

M

341/38.122

F02M 23/06 (2006.01) F02D 41/14 (2006.01) F02M 23/10 (2006.01)

Patent

CA 1214845

ABSTRACT OF THE DISCLOSURE A fuel/air ratio control apparatus for a reciprocating engine used in light aircraft including a fuel metering apparatus (32) and a fuel/air ratio controller (40). The controller (40) generates an electrical signal (Wf/Wa) indicative of a desired fuel/air ratio based upon the flight condition of the aircraft and the metering apparatus (32) meters fuel flow (Wf) according to the mass airflow ingested into the engine. The desired fuel/air ratio is a best power ratio (Wf/Wa (2)) for takeoff and climb conditions and a best economy ratio (Wf/Wa (3)) for cruise conditions as derived from the exhaust gas temperature. These ratios are limited by a ratio (Wf/Wa (1)) based upon the maximum cylinder head temperature tolerable for a particular flight condition.

432504

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