STiG: The Greenest Vehicle on Ecomodder...

[cRiPpLe_rOoStEr]

I bet it doesn't really need much to stand out from the crowd anyways...

[oldtamiyaphile]

I already suspected as much based on my Fiat 500 (which also has a tiny turbo engine) that P&G doesn't work for a car like this.

But today I had a bit of time to kill so I thought I'd prove it.

I have a ~4mile test loop, it circles a lake so it's pretty flat and being a loop cancels out any wind assistance, not that there was any. There are three sets of traffic lights on the loop but I pretty much caught one red per loop so they roughly cancelled out.

Weather was in the 35*C range, auto A/C on, target speed 74km or 46MPH. Accelerating at 80% load.

First loop, constant speed SGII reported 5.35l/100km or 44MPG, also recorded the highest AVG speed.

Next up was P&G using DFCO, that netted 6.9 or 34MPG

Finally, P&G using neutral coast, that netted 6.4 or 37MPG, however at the lowest AVG speed.

The clear winner is the steady state cruise, you'd want to run the test a number of times before deciding between DFCO and neutral, I literally can't feel the difference when I put the clutch in and a closed eye passenger couldn't either. The van uses a relatively large amount of fuel when in neutral as it idles at around 1.3-1.7L/hr.

EOC isn't possible with the push button start.

At a steady 74km/h I was averaging 3.8l/100 or 62 MPG US

[oldtamiyaphile]

I changed out the factory fill oil at 3260km, ideally I'd have done it a bit sooner, but you know...

When I removed the undertray, I was able to have a bit of a poke around under there.

First thing I spotted was the in line electric water pump to cool the turbo after shut down (the actual water pump is a variable geometry design). This explains why I can hear a whine much like the Prius inverter pump after shut down:



It seems that this would be a good idea for anyone with a turbo doing much engine off stuff. My Fiat has factory S/S and no such pump!

Electro-Hydraulic Power steer pump. This explains why the steering works with the engine off, but it feels like hydraulic steering:



Could be useful for swaps into bigger vehicles where the Toyota MR2 pump might be insufficient. I didn't look into how complex the wiring is, but probably not as simple as the Toyota three wire hook up.

[Stubby79]

That electric water pump cooling the turbos after shut-off is one of the best ideas I've seen implemented yet.

[ECO-AKJ]

I don't know about the push button on this van but on
Ford 's, you push and hold till engine shuts off while coasting

[oldtamiyaphile]

Discussion thread:

http://ecomodder.com/forum/showthrea...tml#post546507

It's amazing given all the affordable tech available these days, how few people are curious enough to actually test things, instead of going by 'what always worked' etc.

Since I do my own tinting and my van has two identical rear windows side by side, I figured I owe it to my own curiosity and Ecomodder to test my window tint for myself.

Here are the specs for my lifetime guarantee USA made film (I think Johnson & Johnson brand).

UV Rejected 99%
Visible Light Transmittance 20%
Visible Light Reflected- Exterior 5%
Visible Light Reflected- Interior 5%
Total Solar Energy Rejected 58%

Conditions, sunny winters day 15*C ambient, taken at midday (rear windows facing north).

Interior/Exterior Glass surface temperatures:





Black MDF shelves left inside to simulate a dash board etc:



So an 8*C temp reduction for about a $50 investment

[freebeard]

Interesting. I could use some on the window I'm sitting next to right now. It's 102°F (38.89°C)

How much material did you get for that $50?

[oldtamiyaphile]

$50 buys about 6m (20') of film at around 600mm (2') wide. House windows are really easy to do, car windows take a bit of practice, so I'd recommend buying double what you actually need, if you've never done it before, depending on how tricky your windows are.

[freebeard]

I'm thinking of an Airstream trailer, one roll would do all 12 windows.

[oldtamiyaphile]

Minor update. Record commute this tank.

4.6/100km or 51MPG US city.

Not bad for 2+ tons.

When I refilled my tank SG calibration was spot on so that's a fairly accurate number.

The two way average for the day was still an impressive 5.3, or 44MPG.

The tank itself was a fairly average 6.8, that's the effect of the summer heat.