Patent ID: 9212614
Filing Date: 2015-12-15
Classification: F01N,F02D

Abstract:
1. A method, comprising: operating an internal combustion engine system including an internal combustion engine with a plurality of cylinders that receive a charge flow from an intake system, an exhaust system for receiving exhaust gas produced by combustion of a fuel provided to at least a portion of the plurality of cylinders from a fuelling system in response to a torque request, and at least one aftertreatment device in the exhaust system; determining a regeneration event indication for the at least one aftertreatment device by interpreting one or more regeneration parameters; determining a target condition of the exhaust gas in response to the regeneration event indication, the target condition effective to regenerate the at least one aftertreatment device, wherein the target condition includes a temperature of the exhaust gas, a flow rate of the exhaust gas, and a ratio of NO operating the internal combustion engine to obtain the target condition, wherein the target condition is obtained by fuelling a subset of the plurality of cylinders to satisfy the torque request, and selecting at least one operating mode from the following: retarding a combustion phasing to the subset of the plurality of cylinders; reducing the charge flow to the plurality of cylinders; increasing an output of at least one of a speed and a torque of the engine; and dosing hydrocarbons upstream of the aftertreatment device.