COMBINED DEVICE FOR DECREASING DIESEL EXHAUST GAS TOXICITY Russian patent published in 2012 - IPC F01N3/02 

FIELD: machine building.

SUBSTANCE: proposed device comprises cylindrical casing housing catalyst layer, said casing being made of top and bottom parts. Casing bottom part communicates with engine exhaust system. Diffuser shaped to truncated cone diverging in off gas direction is arranged at casing bottom part inlet. Ejector shaped to truncated cone converging in off gas direction is arranged in inlet branch pipe. Gravitation filter is screwed on casing bottom end and sealed by fireproof gasket while spanner nut is secured to filter bottom. Electric coil with separate ceramic case is arranged between said top and bottom parts of the case. Catalyst layer consisting of granules is confined by inlet and outlet grates. Inlet grate may displace. Compensation element from bimetallic helical spring is arranged between catalyst inlet grate and coil case. Confuser is arranged at case top. Said confuser has two branch pipes, one communicated with atmosphere and another one with inlet branch pipe chamber. All structural elements are made from thin-wall metal.

EFFECT: higher efficiency, decreased metal consumption.

2 cl, 2 dwg