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Old 06-27-2017, 02:04 PM   #11 (permalink)
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Quote:
Originally Posted by Old Tele man View Post
...easily replicated on a single graph vs, mph.
I'd probably want a couple of graphs to include significant loads like A/C and three temperatures: 32F, 70F, and 95F. Alternatively an MPG adjust as a function of temperature.

The hard one is to handle acceleration/deceleration at different power/brake rates. Perhaps a standing start maximum acceleration to a fixed speed, say 30 mph, 50 mph, and 70 mph followed by maximum braking back to stationary. Do it for say 10 cycles and report the MPG at the resulting block-to-block speeds: 15 mph, 25 mph, and 35 mph.

The Cruze diesel would have an acceleration cost based upon the speed and inertial changes BUT it would have no regeneration power because it has to heat the brake pads to stop. In contrast, our Prius Prime and BMW i3-REx would have regeneration curves recovering part of the inertial energy.

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Old 06-28-2017, 06:27 PM   #12 (permalink)
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Real world you can avoid braking in most situations, especially on a known daily commute. Regenerative braking just adds weight and hurts economy in that case.
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Old 06-29-2017, 12:31 AM   #13 (permalink)
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Real world you can avoid braking in most situations, especially on a known daily commute. Regenerative braking just adds weight and hurts economy in that case.
If you live in the flat part of the middle of nowhere, sure. For those who live in hilly areas with plenty of traffic to go around, regenerative braking would earn its place.
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Old 06-29-2017, 05:50 AM   #14 (permalink)
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Quote:
Originally Posted by Old Tele man View Post
Maybe, but, in the long run, trading regeneration for brake-dust is a winning situation...some people encounter high stop-n-go situations where brake avoidance is NOT unavoidable, ie: construction zones, pot-holed roadways, rtc..
Like to add that in a hybrid vehicle the battery and generator are already there.
Why not use it then...

The hybrid system is a benefit in almost any situation.
In lower speed situations my car alternates between EV mode and gas mode with mild regeneration. On the highway it regenerates or supports the engine through variations of load, keeping the revs down on higher load situations.

Only when you are able to DWL all the time does it sit unused.

65.000 miles and still on my original pads and rotors.
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Old 06-30-2017, 12:54 AM   #15 (permalink)
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65.000 miles and still on my original pads and rotors.
Same as on my 2011 Minivan, I think 67k. Working on 2nd set of tires but only because it was a rental before we bought it used with 17k on it and they put new tires on it when we bought it. We have 50k on these and they look like they have a few years left on them still. We do run snows for a few thousand miles ever winter though.

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