Cummins Emission Solutions Inc.

Cami Brigette Ethington

Premjee Sasidharan

Alex D Harrington

Huiling Li

Varun Sood

A controller for a vehicle power system that includes (i) a vehicle that has a battery, an alternator powered by an engine, and an exhaust aftertreatment system that includes an exhaust aftertreatment component, a temperature sensor, and a heater, and (ii) an external power source that is separate from the vehicle. The controller receives, from the temperature sensor, a first temperature signal associated with temperature of the exhaust aftertreatment component and, in response to determining that the temperature is less than a target temperature of the exhaust aftertreatment component, causes power to be provided from the external power source to the heater. The controller further receives, from the temperature sensor, a second temperature signal associated with the target temperature and provides an indicator indicative of the exhaust aftertreatment component reaching the target temperature and the external power source being disconnectable from at least one of the controller or the heater.

Vehicle power systems and methods

A system comprising an aftertreatment system comprising: a catalyst member, and a first exhaust conduit upstream of the catalyst member; a first temperature sensor operatively coupled to the catalyst member; a flow sensor coupled to the first exhaust conduit; and a controller. The controller determines a temperature of the catalyst member, a flow rate of exhaust within the first exhaust conduit, and a space velocity of the exhaust within the catalyst member. The controller determines a first degradation value indicative of a degradation of the catalyst member. The controller determines a first difference between the first degradation value and a first degradation reference value and a second difference between the first degradation value and a second degradation reference value. After determining that the first difference is less than the second difference, the controller selects a first calibration metric. The controller determines a first efficiency value associated with the catalyst member.

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Nashville, IN, United States of America

Cami Brigette Ethington