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Title: Question regarding rich BTS at TFSI ecus Post by: fknbrkn on June 18, 2024, 01:34:12 AM AFAIK enrichment has no noticeable impact to EGTs at TFSI engines so why the BOSCH makes 0.7 lambda in BTS then?
Title: Re: Question regarding rich BTS at TFSI ecus Post by: prj on June 18, 2024, 07:46:02 AM Of course it makes a noticeable impact.
It reduces knock sensitivity, and going away from lambda 1 in either direction always reduces egt. Title: Re: Question regarding rich BTS at TFSI ecus Post by: fknbrkn on June 18, 2024, 09:41:22 AM Of course it makes a noticeable impact. It reduces knock sensitivity, and going away from lambda 1 in either direction always reduces egt. Im asking bc saw your post years ago, something like: lambda < 0.8 makes no sense at DI due to no vaporization effect And this make sense Also stock BTS with lambdasoll ~0.65 could be reason of misfires, its pretty clear with MPI setups, but didnt get the point at DI Title: Re: Question regarding rich BTS at TFSI ecus Post by: prj on June 18, 2024, 03:45:33 PM EGT always goes lower with richer mixture.
Lambda <0.8 usually does not make much sense as a normal target, because you lose power compared to reducing boost... |