Controls for vehicle systems including scr exhaust aftertreatment and neutral at stop capability

A method comprising:

• operating an electronic control system in operative communication with a vehicle system to:
• evaluate whether an SCR catalyst temperature satisfies at least one minimum temperature criterion,
• in response to the SCR catalyst temperature satisfying the minimum temperature criterion, permit a neutral at stop operation wherein the electronically controllable clutch is controlled to selectably decouple the torque converter and the one or more gears at least in part in response to the vehicle system being in a stopped state, and
• in response to the SCR catalyst temperature not satisfying the minimum temperature criterion, prevent the neutral at stop operation.

A method comprising:

• operating a system including an engine operatively coupled to an exhaust aftertreatment system, and a controller configured to control the engine and the exhaust aftertreatment system;
• evaluating an exhaust aftertreatment thermal management metric indicating operation of the system to increase exhaust aftertreatment temperature using energy that does not contribute to torque output of the engine;
• enabling neutral-at-stop (NAS) controls in response to the exhaust aftertreatment thermal management metric indicating a fuel economy benefit of the enabling;
• and
• disabling the NAS controls in response to the exhaust aftertreatment thermal management metric indicating a fuel economy benefit of the disabling.