smkettner
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Re: LEAF needs new cruise control algorithm - Like Volvo tru

Tue Jul 31, 2012 12:53 pm

I agree that if ECO mode is chosen the speed should be allowed to drift up and down 3 to 5 mph.
Or held near constant in the Drive mode as it is now.
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KeiJidosha
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Re: LEAF needs new cruise control algorithm - Like Volvo tru

Tue Jul 31, 2012 3:09 pm

smkettner wrote:I agree that if ECO mode is chosen the speed should be allowed to drift up and down 3 to 5 mph.
Or held near constant in the Drive mode as it is now.
I got to experience the LEAF chasing it's set speed over rolling hills coming back from Davis. Had to go manual before others driving around me and I went nuts as I constantly jumped ahead and fell behind the same traffic over and over. Definitely distracting as well as inefficient.
When I got the Fit EV, I first thought the Cruise Control was broken, as it would turn on, but not engage. Turns out it doesn’t work in “B gear" for the reasons mentioned. But in “D” and in ECON mode, it does just what you’re asking. Speed will vary as much as 5 mph in rolling terrain and the cruise won't chase it over a nominal (economic) power setting. Not perfect, but much more usable in rolling terrain. Normal and Sport mode hold set speed more closely as they use progressively higher power levels (and regen) to maintain speed.
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jkirkebo
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Re: LEAF needs new cruise control algorithm - Like Volvo tru

Wed Aug 01, 2012 2:11 am

smkettner wrote:I agree that if ECO mode is chosen the speed should be allowed to drift up and down 3 to 5 mph.
Or held near constant in the Drive mode as it is now.
Again, no thanks. I always drive in ECO since I do not like the "nervous" accelerator pedal mapping in "D"-mode. If the speed were to drift in ECO I would be forced to use D when using CC. Then CC would have even less regen to use, redering it useless also in moderately steep downhills.

ztanos
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Re: LEAF needs new cruise control algorithm - Like Volvo tru

Wed Aug 01, 2012 8:07 am

Why is it difficult for the LEAF to maintain speed? It has 1 gear so no changing is necessary. It reads power on the fly, so it knows how much is being consumed to add more to the throttle if necessary. This should be an exact science unless going up or down the biggest of hills.

grommet
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Leaf Number: 3612
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Re: LEAF needs new cruise control algorithm - Like Volvo tru

Wed Aug 01, 2012 8:27 am

ztanos, that's what the LEAF does now. This thread is all about folks that may not want the LEAF to maintain speed, for efficiency purposes. :D

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ebill3
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Re: LEAF needs new cruise control algorithm - Like Volvo tru

Wed Aug 01, 2012 9:15 am

I think the LEAF does a pretty good job of maintaining speed, and that is what I want. If I want to vary speed for up and down efficiency, I hit the cancel button.

One of my pet peeves is drivers that yo-yo; especially on two lane 55 MPH secondary roads.
All electric - red LEAF, green Tesla S. No ICE.

ztanos
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Re: LEAF needs new cruise control algorithm - Like Volvo tru

Wed Aug 01, 2012 10:45 am

grommet wrote:ztanos, that's what the LEAF does now. This thread is all about folks that may not want the LEAF to maintain speed, for efficiency purposes. :D

:shock: Oops... wait... :?: so people don't want cruise control to control their cruising speed? :?: Then why use cruise control? :lol:

ztanos
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Re: LEAF needs new cruise control algorithm - Like Volvo tru

Wed Aug 01, 2012 10:46 am

ebill3 wrote:I think the LEAF does a pretty good job of maintaining speed, and that is what I want. If I want to vary speed for up and down efficiency, I hit the cancel button.

One of my pet peeves is drivers that yo-yo; especially on two lane 55 MPH secondary roads.
+1

KeiJidosha
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Re: LEAF needs new cruise control algorithm - Like Volvo tru

Wed Aug 01, 2012 1:10 pm

I think the point is to have the option to do either. On uncrowded hilly roads, an ECO mode allowing the speed some latitude gives better economy. In other situations a normal mode can hold speed more closely, at the cost of efficiency. That allows prioritizing on traffic or efficiency as conditions dictate. Why not have both?
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TonyWilliams
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Re: LEAF needs new cruise control algorithm - Like Volvo tru

Wed Aug 01, 2012 1:12 pm

KeiJidosha wrote:Why not have both?
Mr. KeiJidosha (if that is your real name),

Damn you, DAMN YOU ALL TO HELL !!! How dare you interject rational, reasonable prose in an internet forum ?











:mrgreen:

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