EVAPORATED FUEL PROCESSING DEVICE Russian patent published in 2019 - IPC F02M25/08 F02D41/20 

FIELD: internal combustion engines.

SUBSTANCE: invention can be used in the internal combustion engines fuel supply systems. Disclosed is the fuel vapors treatment device comprising absorber 13, which is designed with possibility to adsorb the evaporated fuel from fuel tank 3, through the vapors supply channel 14, shutoff valve 15, which is designed with possibility to close and open channel 14, wherein the shutoff valve has the incremental electric motor. Controller 70 is configured to control the shutoff valve by means of the electric power controlling supplied from the predetermined power source 71 to the shutoff valve incremental electric motor so, that when voltage, which is supplied from power source 71 to shutoff valve 15 is less than the predetermined value, the actuation period, which is the interval between pulses, which are supplied to the shut-off valve incremental electric motor, becomes greater in comparison with that, when the voltage is equal to or higher than the said predetermined value.

EFFECT: invention allows accurate control of the shut-off valve operation due to reduction of the shut-off valve incremental electric motor out of synchronism probability with decrease in the power supply source voltage.

7 cl, 9 dwg