Daimler Trucks North America LLC

Detroit Diesel Corporation

Rakesh Aneja

Jeffrey Girbach

Andrew S McLandress

Jason T Krajewski

Napolyon Isikbay

Jeffrey A Begeman

Matthew Oaks

Zornitza Pavlinova Pavlova-MacKinnon

Xiaobin Li

Adedejo Bukola Oladipo

A diesel exhaust treatment system for treating exhaust gas from a diesel engine comprises at least one diesel particulate filter, at least one diesel exhaust fluid mixing chamber and at least one selective catalytic reduction converter (SCR). In one desirable embodiment, plural diesel particulate filters are arranged in parallel and plural SCRs are arranged in parallel. These components including the diesel exhaust fluid mixing chamber can be included in a common housing with the exhaust flow reversing directions a plurality of times as it passes through the treatment system from an exhaust inlet to an exhaust outlet. The housing can be coupled to one vehicle frame rail with most of the housing and components contained therein positioned outside the outer surface of the one frame rail.

Treatment of diesel engine exhaust

A method of reducing nitrogen oxides (NOx) and particulate matter (PM) in compression ignition engine emissions. The method includes monitoring at least one engine sensor that generates a signal in response to at least one engine operating condition, and adjusting at least one engine control parameter in response to the signal such that in-cylinder spacial distribution of equivalence ratio and temperature is substantially maintained to an operating region. The operating region corresponds to a set of equivalence ratio with respect to temperature values that are substantially outside regions supportive of NOx and PM formation. The temperature values are greater than 1650 K, and the equivalence ratio values are greater than 0.5.

System and method for reducing compression ignition engine emissions

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Farmington Hills, MI, United States of America

Rakesh Aneja