Quote:
Originally Posted by mechman600
On any of the engines I deal with (Cummins/Paccar/Caterpillar), intake heaters are only for cold startup. Extra heat for DPF is done with engine timing (...) never with increased intake heat.
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On my PSA / FoMoCo 1.6L Diesel, the reported intake temperature (on a ScanGauge) will increase from it's normal 5-10 °C over ambient, to an actual 50-60 °C during DPF regeneration, so it's obviously a manufacturer's choice to do so.
I'm not too sure if it's a good choice though ...
Coolant temperature also increases a few °C during regeneration.
With 28-30 °C outside temps, I've recently seen coolant temps up to 95 °C
Normally it's only 79-83 °C , even during regen.
Thermostat is 81 °C.