US Patent 8359829 Powertrain controls

Systems, methods, and computer-readable storage media directed toward reducing emissions are disclosed. In some aspects, a hybrid powertrain may include an engine and a motor. A combination of output from the engine and motor may be chosen that reduces a concentration of one or more pollutants. In some cases, an exhaust aftertreatment system may be remotely activated, which may reduce warmup time associated with emissions mitigation.