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121 comments on Thursday Open Thread: The "What Have You Done with The Press Release?" Edition

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Twilight on April 27, 2006 - 8:25pm Permalink | Subthread | Parent | Comments top
Actually, while I like a cruise control that holds a very constant speed, I believe it is more economical to let it droop on the uphill and speed up downhill.
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Engineer-Poet on April 28, 2006 - 2:47am Permalink | Subthread | Parent | Comments top
Perhaps (for gas cars), but if it's going to be usable in traffic then you have the difficulty of specifying a speed vs. grade curve as part of the standard (so that vehicles can remain in cruise going up and down hills).  Much easier just to peg a speed and hold it.

I get much better economy in the diesel when I hold constant speed up hills, accelerate over the crest and then drop to neutral to coast down.  It would be even more different in a hybrid.  Any specification should probably be written with hybrids or EV's in mind, as everything else is going to be obsolete in a decade or so but we'll be stuck with the legacy standard.

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121 comments on Thursday Open Thread: The "What Have You Done with The Press Release?" Edition

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