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Exhaust After-Treatment System with Flow Control for Optimum Temperature Conditions

Abstract: 

A diesel engine exhaust treatment system has both a NOx reduction device and a diesel particulate filter. The system is designed to ensure that the NOx reduction device operates within its optimal temperature conditions. Using exhaust flow control valves, the exhaust flow can be directed into either the NOx reduction device first or into the diesel particulate filter first, and then into the other device, before exiting out the tailpipe.

Patent Number: 
7,735,314
Date Of Issue: 
06/15/2010
Inventors: 

Qilong Lu; Yiqun Huang