Quote:
Originally Posted by Redridge
high idle when it regenerates while not moving...
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I intend to run it so it never needs a parked regeneration,so no prolonged idling. See p. 4.1 of the Freightliner manual.
"After exhaust gasses leave the engine, they flow into the ATS. First they flow into a two-part ATD, com- prised of a diesel oxidation catalyst (DOC), and a
diesel particulate filter (DPF). The DPF traps soot particles, then exhaust heat converts the soot to ash in the DPF, in a process called regeneration (regen). The harder an engine works, the better it disposes of soot. When the engine is running under load and regen occurs without input, it is called passive regen. If the engine isn’t running hot enough, the electronic controls may initiate an active regen, whereby extra fuel is injected into the exhaust stream before the diesel particulate filter, to superheat the soot trapped in the filter and burn it to ash. Both types of regen occur without driver input.
Active regeneration can occur automatically any- time the vehicle is moving. The exhaust gas tem- perature could reach 1500°F (800°C), which is hot enough to cause a fire, heat damage to objects or materials, or personal injury to persons near the exhaust outlet. See Regen-Inhibit Switch later in this chapter for instructions on preventing au- tomatic regen if necessary.
The exhaust temperature can remain high even after the vehicle has stopped. When stopping the vehicle shortly after an automatic regen, ensure the exhaust outlets are directed away from struc- tures, trees, vegetation, flammable materials, and anything else that may be damaged or injured by exposure to high heat.
Operating at reduced engine load will allow soot to accumulate in the DPF. When this occurs, the DPF lamp illuminates, indicating that a regen must be per- formed, and the driver must either bring the vehicle up to highway speed to increase the load, or park the vehicle and initiate a parked regen. "
Linear Mode
