F - Mech Eng,Light,Heat,Weapons – 01 – N
Patent
F - Mech Eng,Light,Heat,Weapons
01
N
172/15
F01N 3/02 (2006.01) F01N 3/023 (2006.01) F01N 5/02 (2006.01) F01N 13/04 (2010.01) F02B 1/04 (2006.01) F02B 3/06 (2006.01)
Patent
CA 1279578
-20- Abstract of the Disclosure An apparatus for use with an internal combustion engine such as a diesel engine which emits hydrocarbons and particulates is disclosed. The apparatus is for use with an engine having a primary exhaust conduit, a flow divider defining parallel exhaust conduits connected to the primary exhaust conduit, and a pair of particulate traps, one each disposed in each of the parallel exhaust conduits and each of said traps having a frontal face exposed to the exhaust gas flow and one of the parallel exhaust conduits. The apparatus comprises (a) a heat exchange means disposed in the primary exhaust conduit for reducing the temperature of the exhaust gases for promoting partial condensation of hydrocarbons; (b) syphon means to conduct a separate syphoned flow of exhaust gas from the primary exhaust conduit around the heat exchanger to the frontal face of each of the traps; (c) a pair of valves, each responsive to a pressure differential between the primary exhaust conduit and a different parallel exhaust conduit to separately control each flow of the exhaust gas through said syphon means; (d) flow control means for selectively promoting pressure differential between one of the parallel exhaust conduits and a primary exhaust conduit while dissipating any significant pressure difference between the primary exhaust conduit and the other parallel exhaust conduit; and (e) means to augment the heat of the syphoned exhaust gas to facilitate ignition of the collected particles at the frontal face of a trap exposed to such exhaust gas.
546571
Rao Vemulapalli Durga Nageswar
Wade Wallace Robert
Ford Motor Company Of Canada Limited
Sim & Mcburney
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