Quote:
Originally Posted by bwilson4web
Thanks,
Please include professor Raf Catthoor's authorship when sharing this paper even though it is in the PDF attribution.
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Please cram the suggestion that I treat this link special with walnuts. That has to be the weirdest request I have heard yet, where is your head at? Standard forum etiquette is to provide a link plus some verbiage for context, which is precisely what I had done.
Quote:
Originally Posted by bwilson4web
and leads the unwary astray.
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I think you just did. My point was that there are losses when you use an engine to drive a generator to drive a motor to drive the wheels, and the prius has to do this very thing at higher speeds. Boost converters lose efficiency when they have to increase the output ratio also. You made the claim "unmatched efficiency" when, as was apparently missed in your attempt to sell more priuses, but is still supported by " * 55.5% - lowest found
* 92.7% - highest" and if 92.7% is zero electrical then 70% sounds like a reasonable swag to me.
There are plenty of operating conditions where direct drive, plus right sized atkinson will beat a priuses pants off for efficiency, especially in the high speed arena. I appreciate your love for data, but that does not mean you are completely unbiased when it comes to the prius or when choosing your words to describe it.
I'm afraid you have not supported your claim that "Adding a motor and battery or even a generator would lead to poor performance." or "unmatched efficiency". In an honorable competition you would not compare a prius to a $500 generator-BEV come hilbilly series hybrid. To determine if it is unmatched, I would pit you against a driver with the tiniest mote of education (especially in comparison to all the useless by comparison information rabbit holes various prius versions and authors and sycophants will lay in front of you) in a similiar CDA BEV using an atkinson parallel range extender with basically a stick shift. Feel free to add an efficient generator too if it makes sense, but especially for constant speed vs mpg readings, you still want to have the right sized engine transferring power to the wheels with minimal conversions and losses. This basic fundamental fact has not changed, conversions cost efficiency. If you want to drive 80 then choose your engine wisely, or choose "multiple" smaller engines or see what you can do with electronic valves, and take up the slack with the electric motor. I don't know what conservationists are saying driving 80 is a swell idea though.