V-MAC Co-Pilot Operator's Manual 23 EXHAUST AFTERTREATMENT SYSTEM Aftertreatment DPF Regeneration, Cummins ISX A DPF in the exhaust is used to meet emission requirements to help reduce soot and particulate emissions into the atmosphere. The particulates are typically removed by collecting in a DPF, with continuous or periodic regeneration of the filter. The electrical and exhaust aftertreatment system set up of the vehicle will determine when regeneration is required. When regeneration is needed, the icons on the DPF Smart switch will light up momentarily to notify the driver and then shut off during regeneration.
The High Exhaust System Temperature (HEST) indicator will light up on the instrument cluster to warn of high exhaust temperatures (when vehicle speed is less than 8 km/h [ 5 mi/h ], depending on engine setting, or when parked). Depending on the vehicle's aftertreatment setup, regeneration can be performed while moving or when the vehicle is parked. Below is general information about the exhaust aftertreatment systems. For catalyzed exhaust aftertreatment systems Engine Coolant Temperature (ECT) is 35°C ( 95°F ) or higher. Icons on the DPF Smart switch will momentarily light up and then shut off during the regeneration.
HEST indicator on instrument cluster will light up to warn of high exhaust temperatures when vehicle speed is 8 km/h ( 5 mi/h ) or less, depending on engine setting. Engine speed will increase to around 1,100 RPM during regeneration (for parked regeneration).