METHOD AND SYSTEM FOR RECIRCULATION OF EXHAUST GASES AND RECOVERY OF THEIR HEAT Russian patent published in 2019 - IPC F01N3/20 F01N5/02 

FIELD: internal combustion engines.

SUBSTANCE: first part of exhaust gases is fed into upstream catalytic neutralizer of exhaust gases via heat exchanger in bypass channel. Second remaining part of the exhaust gases is supplied to the upstream catalytic neutralizer of the exhaust gases through the main outlet channel located in parallel to the bypass channel. Fuel feed is controlled by cylinder ratio depending on ratio of first and second parts to ensure target air-fuel ratio of exhaust gases at upstream catalytic neutralizer of exhaust gases. At that, cylinder regulation of fuel supply depends on ratio of movement delay of the first part of exhaust gases by bypass channel and delay of movement of the second part of exhaust gases along the main outlet channel.

EFFECT: invention relates to the purification of internal combustion engine exhaust gases.

15 cl, 11 dwg