Microprocessor controlled diesel particulate trap system

F - Mech Eng,Light,Heat,Weapons – 01 – D

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F01D 3/00 (2006.01) F01N 3/02 (2006.01) F01N 3/023 (2006.01) F01N 3/025 (2006.01) F01N 3/033 (2006.01) F01N 9/00 (2006.01) F01N 13/04 (2010.01) F01N 3/029 (2006.01) F01N 3/32 (2006.01) F02B 3/06 (2006.01)

Patent

CA 1252393

24 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.

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