Supervisory thermal management system and method for engine system warm up and regeneration

A system adapted to manage vehicle engine/transmission systems to assist in thermal management of an engine aftertreatment DOC warm-up system, comprising:

• a vehicle operating condition module including data indicative of at least one current vehicle operating condition, said at least one current vehicle operating condition data including data signifying at least one of transmission out power and speed, current gear number, transmission gearing set, current engine temperature, current engine speed, current engine torque, and fueling;
• an engine fueling map module including data from engine fueling maps based on warm-up conditions;
• a target temperature module including a target temperature related to DOC light-off;
• an expected exhaust temperature module containing:
• a first expected exhaust temperature based on a transmission down shift and higher engine speed in view of said operating condition data and said fueling maps,
• a second expected exhaust temperature based on a transmission down shift and higher engine speed coupled with late post fuel injection, and
• a third expected exhaust temperature based on late post fuel injection and non-shifted transmission;
• a comparison module containing a comparison of said first, second and third expected exhaust temperatures relative to said target temperature;
• and
• an optimization module containing a transmission gear shift recommendation in view of said comparison of said expected exhaust temperatures, said recommendation being based on an optimization of overall fuel economy.

A system adapted to manage vehicle engine/transmission systems to assist in thermal management of an engine aftertreatment DOC warm-up system, the system comprising:

• a DOC warm up module configured to bring the DOC to a light off temperature, the DOC warm up module including:
• a fuel consumption interpreter module:
• configured to calculate a first fuel consumption resulting from a transmission downshift and
• configured to calculate a second fuel consumption resulting from a no shift,
• an expected exhaust temperature determination module:
• configured to calculate a first expected exhaust temperature change for the transmission downshift and
• configured to calculate a second expected exhaust temperature change for the no shift,
• a late post fuel calculator module:
• configured to calculate a first late post fuel amount for bringing the DOC to light off temperature for the transmission downshift and
• configured to calculate a second late post fuel amount for bringing the DOC to light off temperature for the no shift, and
• wherein the DOC warm up module is further configured to provide a down shift command.