Quote:
Originally Posted by Ecky
Pretty darn impressive numbers.
Your main losses are aerodynamics, weight, and parasitic.
-Hybrid systems are often great for cutting parasitic losses, because they usually have infinite control of the rev range and can in many cases toggle the engine on and off as needed. With a quick search I wasn't able to figure out what kind of gearbox the Tahoe uses - is this something you know and can share? Is it a planetary gearbox like the Prius/Rav4/Volt? Anyway, given the great economy you already have, there probably isn't as much low-hanging fruit here.
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it's a standard 4 speed automatic.
it uses the Gear Ratios
1st — 3.69:1
2nd — 1.70:1
3rd — 1.00:1
4th — 0.73:1
EVT #1 — Infinity to 1.70:1
EVT #2 — 1.70 to 0.50:1
Reverse — Infinity to 1.70:1
the biggest losses are Aero drag
there is some weird Aero drag in the rear of the SUV... all the air from under the SUV circles in the rear creating a vortex or "wake" i noticed it when it was not raining but the ground was wet and the rear window was getting wet... i did not see it on other SUVs
the under body is a real mess
the mirrors are "big" as well