FUEL INJECTION CONTROL METHOD AND SYSTEM Russian patent published in 2017 - IPC F02D41/40 F02P5/04 

FIELD: engines and pumps.

SUBSTANCE: invention relates to the control method of fuel injection in an internal combustion engine (ICE). The injection control method is suggested comprising the following operation: use of at least first set map (8) of composition of fuel-air mixture and determination of first ratio of components of fuel-air mixture (AFR1) based on at least one work parameter of the engine, and at least first set map (8) of composition of the fuel-air mixture; determination of second ratio of components of the fuel-air mixture (AFR2), that by first constant value (34) is corrected relatively to AFR1, determination whether first operation mode or second operation mode, fuel injection control is selected according AFR1, when at requested fuel consumption ratio of components of the air-fuel mixture is below AFR1, and first operation mode is selected; or, as alternative, fuel injection control according to AFR2, when at current requested fuel consumption the ratio of components of the air-fuel mixture is below AFR2, and second operation mode is selected.

EFFECT: invention ensures economic operation mode of the internal combustion engine.

21 cl, 5 dwg