Quote:
Originally Posted by SPL
When the gauge FE reads precisely 60 mpg (or precisely 0 L/100 km in the Canadian version) when coasting at speeds above ~40 miles per hour (~64 km/h), you are in "fuel-cut" mode — the ICE is burning absolutely no fuel, but is being spun at ~1000 rpm by MG1 (for various protective reasons discussed in detail in other threads — search on "fuel cut"). In pure-EV mode, the ICE is not spinning at all, and so is also burning no fuel. In fuel-cut mode, however, the work done spinning the ICE wastes energy.
Maximizing pure-EV mode operation sounds desirable at first sight, but does not necessarily improve overall FE. The recharging of the battery takes gasoline, and unless you can beat Toyota's control system, it's likely that you'll actually end up worse off by trying to maximize EV mode. See the thread "An Unpalatable Fact (with apologies to Al Gore!)" for a lot more on this.
Stan
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Frankly without extensive testing I still do in fact believe I can beat Toyota's control system, at least at speeds where I can do a lot of EV, however I know you won't accept anything that's "I think" so I haven't bothered trying to add anything to that thread in the past. *shrug*
And I will point out that the fuel-cut mode above 40 I'd already mentioned, the remaining question was what state it's in when below 40 and not in EV mode. That I have no information on, and no Scangauge to try to verify if it's just burning small amounts of gas or doing something to truly coast.
Re: How come I can't go into EV mode sometimes?
