Air-fuel metering system for internal combustion engine and apparatus to control air fuel ratio of air-fuel being applied to engine
 An air-fuel metering system employs a fluidic element which is circuited in such a manner that fuel supplied to the engine induction passage is varied not only to the venturi vacuum as modified by an output signal from an exhaust gas sensor placed in flow communication with the exhaust gases from the engine. 
Nissan Motor Company, Limited
F F F
F02M F15C F02D
inventional inventional inventional
Masaaki
Saito