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System and method of DPF passive enhancement through powertrain torque-speed management

United States Patent

November 24, 2015
View the Complete Patent at the US Patent & Trademark Office
This disclosure provides a method and system for determining recommendations for vehicle operation that reduce soot production in view of a diesel particulate filter (DPF) of an exhaust aftertreatment system. Recommendations generated can reduce excessive particulate matter (PM) production during transient engine events and provide for operating conditions favorable for passive regeneration. In this way, less frequent active regeneration of the DPF is needed and/or more opportunities are provided for passive regeneration. The system and method can utilize location and terrain information to anticipate and project a window of operation in view of reducing soot production and soot loading of the DPF, or provide the operator with instruction when such opportunities are present or will soon be encountered.
Sujan; Vivek A. (Columbus, IN), Frazier; Timothy R. (Columbus, IN)
13/ 407,583
February 28, 2012
STATEMENT REGARDING FEDERALLY SPONSOREDRESEARCH OR DEVELOPMENT This invention was made with government support under "Recovery Act--System Level Demonstration of Highly Efficient and Clean, Diesel Powered Class 8 Trucks (Supertruck)," Program Award Number DE-EE0003403 awarded by the Department of Energy (DOE). The government has certain rights in the invention.