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Old 04-10-2020, 02:07 PM   #49 (permalink)
aerohead
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some aero mods

Quote:
Originally Posted by Tahoe_Hybrid View Post
I had problems with the electrical causing issues with the Engine control Module & hybrid controller.. Preventing EV and auto stop from working correctly over the last year...

it will be higher this month. as i fixed the issue the positive cable was caked on with dirt and oil... it will be in the 24-25 range for the city. this month..


also i said 40-48mpg could be possible if i could lower the drag. a bit as it will be in EVT mode.more often . which runs the engine at 1,000 rpm at 38mph to 48mph..


the best I have gotten was 31.2mpg on the highway.
as i was able to keep in in the eco mode most of the time.. 40+MPG would be possible on the highway... with some aero mods..


I'll make another entry one for City and one for highway so everything will get deleted and re install the numbers
I ran back-of-the-envelope numbers on the Tahoe.If,without hypermiling,you're currently experiencing 31.2-mpg @ 60-mph,in order to achieve 40-mpg,under identical conditions,would require a drag reduction to Cd 0.136,lower than the GM Sunraycer,solar race car of 1987.A 60% drag reduction (if we presume Sunraycer's current Cd is adjusted for a crosswind-averaged coefficient.
The 'baby' template model registered Cd 0.1201 @ zero-yaw with complete canoe fairings on all wheels.
There's no 'physics' boundary obstructing your achieving the new target,however the man-hours necessary for fabrication might blow your 'human-capital' budget all to ---l.
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