24 V-MAC Co-Pilot Operator’s Manual EXHAUST AFTERTREATMENT SYSTEM Aftertreatment DPF Regeneration A DPF in the exhaust is used to meet environmental protection agency (EPA) 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] 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 non-catalyzed exhaust aftertreatment systems
• Vehicle speed must be at least 8 km/h (5 mi/h) in order for the passive regeneration to start.
• 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. HEST indicator will shut off when vehicle speed is 16 km/h (10 mi/h) or higher.
• Engine speed (RPM) will remain at idle during regeneration (for parked regeneration). For catalyzed exhaust aftertreatment systems
• Vehicle speed must be at least 40 km/h (25 mi/h) in order for the passive regeneration to start.
• 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. HEST indicator will shut off when vehicle speed is 16 km/h (10 mi/h) or higher.
• Engine speed will ramp up to around 1,100 RPM during regeneration (for parked regeneration).
