The invention provides a catalyzed soot filter formed on a wall flow substrate having internal walls coated with catalyst compositions. The soot filter maintains a homogeneous flow of the exhaust gases through the internal walls of the substrate along the length of the filter due to the coating design. Both the efficiency and the durability of the catalytic function are increased over conventionally designed catalyzed soot filters. The catalyzed soot filter provides an integrated function for simultaneously treating the gaseous components of the exhaust (e.g., CO and HC) and the particulate matter deposited in the filter.

Title
Pressure-balanced, catalyzed soot filter
Application Number
11/218840
Publication Number
20060057046
Application Date
September 2, 2005
Publication Date
March 16, 2006
Inventor
Yiu Kwan Lui
Parlin
NJ, US
John Joseph Steger
Pittstown
NJ, US
Kenneth Edwin Voss
Somerville
NJ, US
Michel Deeba
East Brunswick
NJ, US
Torsten Wolfgang Mueller
Alfred Helmut Punke
Agent
Engelhard Corporation
NJ, US
Agent
Chief Patent Counsel
NJ, US
IPC
B01D 47/00
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