Originally Posted by Mekanic
A Hybrid Electric drive on a RV would NOT be a good thing. where the hybird gets its wasted energy is in braking. So Stop and go traffic it is great. (like city transit buses)
On the open highway the benefits are almost Zero.
And its gonna take up a lot of space.
Although in the mountains of Colorado it could work well If the battery pack was large enough. (kind of like the dynamic braking on freight trains)
This, I think, is a common misunderstanding about Hybrid Vehicles. And while stop-and-go gives truly AWESOME MPG, it is a big help on the highway too.
I live with a Hybrid everyday, so I know the real world improvements that the system gives the driver.
Example in stop-and-go: While at Yellowstone last spring, our Hybrid SUV was getting over 65MPG for the week of our visit, because we were usually going under 20MPH to see all the animals
Example on combined City/Hwy driving: We usually get 30MPG driving in SoCal where driving everywhere requires a freeway - going well over 60MPH.
The same SUV with a V6 (equal in power - my aunt has one) gets 19MPG Highway and 14MPG city.
The electric motor is always there and adds a significant amount of power during every up-hill climb - no matter how slight. The motor switches to a generator and re-fills the battery on the backside of each hill.
Press the accelerator to pass and it is the electric motor that gives you the extra boost, then recharges the battery while returning to normal speed.
This ebb and flow from the hybrid drive helps keep the gas engine in it's most economical power band.
Plus, at every start from a full stop, we can usually go all the way to 25MPH on all-electric drive, without using even one drop of gas!
If anyone has a different experience, then we should talk about "hypermiling" to improve your mileage
I really wish my RV could do these things!