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Originally Posted by MikeT
Diesels run so lean at idle that stopping is unnecessary, and also, starting and stopping reduces catalyst efficiency, as the honeycomb cools and then needs to re-heat (I refer to gas engines here). . . .
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Could you run an idle test with your Smart and report the L/hr.?
When I was adding a 1 kW inverter to my Prius, I needed fuel consumption data, scroll down to see the table:
http://home.hiwaay.net/~bzwilson/prius/priups.html
At idle in my car port over 12 hours, my NHW11 Prius:
- burns 0.0638 gal/hr. or 0.2417 L/hr.<
- peak power of 53 kw<
What is your diesel fuel burn at idle and the peak power kW?
BTW, when the ICE stops, the catalytic cooling is primarily radiant heat loss and limited convection.
Bob Wilson