CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE FOR VEHICLE Russian patent published in 2018 - IPC F02D41/12 F02D41/06 F02P5/15 

FIELD: motors and pumps.

SUBSTANCE: invention relates to the control of an internal combustion engine, in particular to a fuel cut-off technology during deceleration. It is proposed that when the degree of opening of accelerator becomes zero (S1), vehicle speed (Vfc) for fuel cut-off resolution is set based on coolant temperature (TW) (S2). During the delay time (Tdl), the torque reduction has a characteristic of temperature (TW) of the coolant, and a relatively large volume of air is supplied in the unheated state. Vehicle speed (Vfc) for fuel cut-off resolution has a high-value acceptance characteristic when the engine is not warmed up, and coolant temperature (TW) is low, in accordance with the control of the air volume reduction based on the delay time, which is performed in accordance with coolant temperature (TW).

EFFECT: technical result consists in reducing the fuel consumption by cutting off fuel by controlling the fuel cutoff at a lower vehicle speed, and also suppressing the shocks.

3 cl, 8 dwg