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- Jan 20, 2013
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Now that I've finally got my MPGuino hooked up and working in my 2.3 Merc daily driver, I thought I'd share some data I collected.
KH = Average speed: 31.02 Km/h LK=12.72l/100km
KM= Distance Travelled: 437.62km L= Fuel used: 55.65l
Here's the interesting screen:
TE= Time coasting with injectors off 78.39 minutes!
L= Litres used idling while stationary 4.52 litres!
What can we learn?
Coast as much as you can. It's amazing that in 450km, the engine spends nearly 80mins coasting wihout using fuel. The Merc is getting old tech wise and it's DFCO (which operates from >1900 to1500rpm) is no where near as effective as on the Twinair (which operates from >1500 to 900rpm). My guess for the TA would be closer to 100 minutes on the same routes.
A LOT of fuel is wasted idling. 4.52l per 450km or 1l/100km in the case of the Merc, or about 0.5l/100km if adjusted for a 500 on the same routes.
UFI is running the stock battery again as I couldn't get the LiFe to work with S/S and don't really have the time to keep messing with it. The LiFe made UFI much more responsive to drive, but it's not a practical proposition to switch between the two. Maybe down the track I'll try a different approach to fitting a LiFe using the new square cells (which I plan on getting for the Merc). For now UFI's LiFe will go on to power my Suzuki Swift
Just thought I'd post the potential savings S/S can deliver. It's worth noting that MPGuino is very sensitive so even if you roll at 0.02 km/h it won't be counted as 'stationary', whereas the 500's S/S shuts down the engine while the car is still moving slightly. Even if you go and halve the above figures, 0.25l/100km is nothing to sneeze at.
UFI will get a MPGuino down the track too, it's precision means I can actually test the effects of things like wheel and tyre size, lowering weight savings etc. Tank to tank numbers can't reflect anything but massive changes.
KH = Average speed: 31.02 Km/h LK=12.72l/100km
KM= Distance Travelled: 437.62km L= Fuel used: 55.65l
Here's the interesting screen:
TE= Time coasting with injectors off 78.39 minutes!
L= Litres used idling while stationary 4.52 litres!
What can we learn?
Coast as much as you can. It's amazing that in 450km, the engine spends nearly 80mins coasting wihout using fuel. The Merc is getting old tech wise and it's DFCO (which operates from >1900 to1500rpm) is no where near as effective as on the Twinair (which operates from >1500 to 900rpm). My guess for the TA would be closer to 100 minutes on the same routes.
A LOT of fuel is wasted idling. 4.52l per 450km or 1l/100km in the case of the Merc, or about 0.5l/100km if adjusted for a 500 on the same routes.
UFI is running the stock battery again as I couldn't get the LiFe to work with S/S and don't really have the time to keep messing with it. The LiFe made UFI much more responsive to drive, but it's not a practical proposition to switch between the two. Maybe down the track I'll try a different approach to fitting a LiFe using the new square cells (which I plan on getting for the Merc). For now UFI's LiFe will go on to power my Suzuki Swift
Just thought I'd post the potential savings S/S can deliver. It's worth noting that MPGuino is very sensitive so even if you roll at 0.02 km/h it won't be counted as 'stationary', whereas the 500's S/S shuts down the engine while the car is still moving slightly. Even if you go and halve the above figures, 0.25l/100km is nothing to sneeze at.
UFI will get a MPGuino down the track too, it's precision means I can actually test the effects of things like wheel and tyre size, lowering weight savings etc. Tank to tank numbers can't reflect anything but massive changes.
