Knowing a thing or two about DPF from an OEM perspective, I figured I would add to this...
Simply put: As was said, you won't be able to reach lightoff temp with electricity. Well, maybe on a 480v high amp industrial supply, but not too many people have one.
DPF regeneration dosing is a carefully calculated and metered injection of fuel over a period of time to allow slow, even heating and hence a small delta temp within the ceramic matrix. If you were to try to use another fuel and/or injection system for DPF regeneration, I would give you a 90% chance of cracking and ruining the DPF in short order.
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