Diesel particulate traps

Details Diesel particulate traps Diesel particulate traps

1986-06-30

1987-08-11

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

55283, 55DIG30, F01N 302

Patent

active

046852913

ABSTRACT:
A particulate trap system used with a diesel engine has an exhaust conduit ducting exhaust materials through an exhaust cooler, then through a particulate trap, and then to the atmosphere. A by-pass conduit is connected in parallel with the exhaust cooler, and valves are located in the exhaust conduit and the by-pass conduit. A microprocessor-based control unit is arranged to allow normal operation with the exhaust materials passing through the cooler. However, when backpressure in the exhaust conduit reaches a predetermined level due to particulate build-up in the trap, the valves are gradually reversed, so that non-cooled exhaust materials arrive at the trap, thus regenerating it due to combustion.

REFERENCES:
patent: 3757521 (1973-09-01), Tourtellotte
patent: 4566271 (1986-01-01), French

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