Aftertreatment System Conditioning (Periodic Heat Mode)

During periods extended idling (typically 8 more the aftertreatment system will accumulate unburned hydrocarbons that are released from a diesel Accumulation these hydrocarbons can oxidize the aftertreatment system and can cause damaging temperature spikes and potential hardware failures upon resumed driving during aftertreatment DPF stationary regeneration

Extended idling periods should limited less than hours order protect the aftertreatment However , for customers who idle their vehicles past the hour a periodic heat mode (known Aftertreatment System was developed for the catalyzed aftertreatment

Note : Aftertreatment system conditioning NOT available vehicles equipped with a non - catalyzed aftertreatment system.

Aftertreatment system conditioning pur ges the DPF accumulated hydrocarbons typically every 8 hours extended idling The process accomplished elevating exhaust temperatures approximately 100 200°C for 5 8 and ramping the engine between 1050 and 1400 RPM (dependent engine ambient air temperature (AA and

When aftertreatment system conditioning active and the engine ramps up, a message will appear the - Pilot® Display indicating that the cycle active and driver input necessary . When the cycle the engine will ramp down normal idling speed.

Note : recommended that the aftertreatment system conditioning cycle not interrupted while progress. possible, not step the throttle, release the park brake move out neutral until the cycle completed (from 5 8

Aftertreatment System Conditioning and O Operation

When the aftertreatment system conditioning cycle becomes active and a power takeof f (PT the engine speed (RPM) should remain the O set provided the RPM and O engage inputs are The O must activated a switch provide O engagement and speed input the vehicle electronic control unit (VECU) (so that the engine control module (ECM) knows the status the O). these inputs are not enabled and the O aftertreatment system conditioning will increase RPM when resulting damage the equipment the product being

Note : When selecting a O a vehicle with a aftertreatment diesel particulate filter (DPF), important that the O specified have a maximum rated speed above the minimum Please refer Figures through

Note : For vehicles equipped with the catalyzed DPF and prolonged periods engine idle time are required, the engine speed control should not used increase RPM. The engine must allowed idle prolonged engine idling necessary , recommended that the ECM programmed with California Air Resources Board (CARB) 2010 compliant Please refer the Emission Contr Systems for MACK Class 8 Diesel Engines (MACK MP7 and MP8 Engines) manual for more information.