5 6 8 10 and 12 cylinders it is also appreciated that the systems and methods of the present disclosure can be implemented in a v type cylinder configuration fuel is injected into the cylinders 26 by fuel injectors 28 heat from the compressed air ignites the air fuel mixture combustion of the air fuel mixture creates exhaust exhaust exits the cylinders 26 into the exhaust system the exhaust system includes an exhaust manifold 30 a diesel oxidation catalyst doc 32 and a particulate filter pm filter assembly 34 with a zoned inlet heater 35 optionally an egr valve not shown re circulates a portion of the exhaust back into the intake manifold 22 the remainder of the exhaust is directed into the turbocharger 18 to drive a turbine the turbine facilitates the compression of the fresh air received from the air filter 14 exhaust flows from the turbocharger 18 through the doc 32 through the zoned heater 35 and into the pm filter assembly 34 the doc 32 oxidizes the exhaust based on the post combustion air fuel ratio the amount of oxidation increases the temperature of the exhaust the pm filter assembly 34 receives exhaust from the doc 32 and filters any soot particulates present in the exhaust the zoned inlet heater 35 is spaced from the pm filter assembly 34 and heats the exhaust to a regeneration temperature as will be described below a control module 44 controls the engine and pm filter regeneration based on various sensed information more specifically the control module 44 estimates loading of the pm filter assembly 34 when the estimated loading is at a predetermined level and the exhaust flow rate is within a desired range current is controlled to.