consumption screen

[raysullivan]

I'm curious:

Up here in the great white north, my little prius records fuel consumption in L/100 Km.

So in the consumption screen the "bars" range from a high of 10 L/100km, to a low of zero. The lower the bar, the better the mileage, right down to zero when the ICE shuts off.

How's that work in US MPG?

High MPG numbers are good, low numbers are bad - but what does it do to indicate the ICE is off? register infinity?

[seasalsa]

My consumption screen has a range of from 0 MPG to a maximum of 100 MPG. When coasting with the ICE off it registers 100MPG. The historical mileage is shown in 5 minute increments.

[DanMan32]

When dealing with 0's in division, the 0 can be on the numerator, which is 0, or in the denominator, which is not legal. However, when the denominator aproaches 0 for any positive number in the numerator, the results approach infinity. Therefore, one could consider x/0 as infinity.
This is what the Prius does, though it limits infinity to its max display limits of 99 or 99.9.

[oly_57mpg]

Glad to see you hosers have Prii up there. They're good for making trips to Elsinore! Just watch out for Brewmaster Smith!

[Tideland Prius]

It'll show a full bar. It's the same for km/L but that goes from 0 to 40.

[raysullivan]

<div class='quotetop'>QUOTE(seasalsa\";p=\"98329)</div>

When coasting with the ICE off it registers 100MPG. [/b]

That's interesting. 100MPG is about 2.4 L/100km. That's what my screen registers when the ICE is essentially idling for the AC but the drive power ic coming from the HSD. I'm able to distinguish between that and actual ICE shutdown.

I guess the metric screen allows for a bit more accuracy at very low consumption levels.

On the flip side, when my car isn't moving but the ICE is running it shows 99 L/100km - wreaks havoc with my averages!

[Tideland Prius]

quite. One of the reason why I want the EV mod is so that I can shut off the engine while waiting to turn to traffic and let it warm up when I'm actually in traffic. Countless times have I pulled out of a parking lot, waiting to turn onto a road and had the engine running at 99.9 :P

[vincent1449p]

<div class='quotetop'>QUOTE(raysullivan\";p=\"98356)</div>

I guess the metric screen allows for a bit more accuracy at very low consumption levels.[/b]

I agree L/100km is good for monitoring very low consumption and fuel cut mode.

But when it comes to monitoring improvement, the MPG or the km/L have the edge. The advantage is the extra digit of precision which allows you to see more subtle differences in the efficiency you're achieving. For eg., 4.1 L/100km -> 4.0 L/100km is only 1 division but in MPG, it is 57.4 MPG -> 58.8 MPG, you can see 14 divisions!

How I wish Toyota could add a switch to toggle between the displays.

Vincent

[galaxee]

DanMan, you just brought back a traumatic memory of my calculus classes in college! Eek!

[8AA]

<div class='quotetop'>QUOTE(raysullivan\";p=\"98356)</div>

That's interesting.  100MPG is about 2.4 L/100km.  That's what my screen registers when the ICE is essentially idling for the AC...[/b]

Kind of off the subject, but the AC can operate with the ICE completely shutdown.