Mini Test: Driving With Load VS. Cruise Control - DWL (more or less) busted!
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I did a little A-B test tonight comparing 'driving with load' versus cruise control and here are my results:
Temperature: 11*C Winds: coming from the south @ 15km/h. Route: Attachment 374 Here's the YouTube Video of the test. Driving with Load: FE average: 60.5 mpg Speed Average: 48 mph Using Cruise Control: FE average: 60.2 mpg (a 0.5% mileage decrease if you're picky) Speed Average: 48mph Looks like using cruise control is virtually just as good as keeping a steady throttle and letting the car speed up and slow down as it likes. I tried to make a video of the test & everything went well except the last clip where I announce the mpg with the cruise: It didn't record on camera :eek: :( :mad: :thumbdown:!!! Now I know how people feel when they get all geared up for a UFO sighting and miss the final alien shot :p! I'll probably still post it later because there's some funny parts where a guy driving an SUV gets all angry after I point the camcorder at him, and me full-throttle accelerating like mad so I can simply merge onto the highway. |
What kind of route, weather and terrain were you dealing with. I would be really supprised if that held up to more testing. I done hill climbing (1/2 mile 6% grade) with load and without and there is a significant difference between the two. Then again I don't have that data to show since my computer crash.:(
Just saw the map. Was it the same directions both time. |
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Computer crash eh? Looks like the UFO thing is effecting you too! Quote:
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I think more data is imperative when comparing to cruise controlled speed. As I found with my brief testing of my grille blockoff, there seems to be too much variance to conclude anything even on a 20 mile round trip.
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Peak in my search on acetone I found that this(second one down) experiment made google. Now you can say that your work has been published.:D
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Now let's see if my Acetone Test will make google too (just did the test today and about to make a thread on it ;)). |
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Also, I was too simplistic when I described DWL as maintaining a constant pedal position, Peakster. Thats more like "DWL lite". "True" DWL would have you monitoring your SG for engine load (or an engine load-related parameter like instant MPG). If you're DWL, your MPG should stay constant as you climb & descend grades. This will likely mean that you have to let off the accelerator progressively as your speed falls in a climb (maybe even downshift too), and slowly re-apply pressure after the crest. So "True" DWL (as opposed to DWL Lite) by its very nature will also probably result in a slower average speed over a given route than driving that route with the cruise control (assuming the same starting speed). So you also face less aerodynamic losses. |
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