Quote:
Originally Posted by WesternStarSCR
Dave,
Do you think Mazda is mostly treating the regen cycle like that of the pre DEF (EPA 07) trucks prior to EPA 10 (just using rich fuel and heat since they do not use DEF)?
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DEF/SCR useage doesn't directly have anything to do with DPF regen cycles. DEF/SCR is for NOx, DPF is for smoke/particulate.
Quote:
Originally Posted by WesternStarSCR
I wonder if regen cycle is included in EPA test cycle numbers for FE or not.
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No, it's not included. The EPA test is fairly short, and DPF regens typically only happen every few hours.