FFH and neutral coast

Discussion in 'Ford Hybrids' started by SD3_Driver, Sep 18, 2011.

  1. Right Lane Cruiser

    Right Lane Cruiser Penguin of Notagascar

    Hi, Gary – I've tried your technique to good effect but find it harder to build a high SoC in the FFH than I was able to in Debbie's '05 FEH. At some point I've got to get a ScanGauge into that car – it's hard to even track individual segments in the FFH because my wife uses the segment average display for her tank average. :p

    I'll try it again the next time I drive it and see if I can build the SoC better by keeping the overall level lower. It definitely charges harder below half on the display.
     
  2. lolder

    lolder Well-Known Member

    Let's say you accelerate with the ICE to 40 mph. When you release all the pedal pressure, it pops into EV with the charge UP arrow. Push slightly on the pedal to put the UP arrow out but not enough to show the discharge DOWN arrow. You are then coasting. There's a little learning curve and it does distract your attention from the road so be cautious. I've learned to use constant pedal pressure as a rule in most driving and acceleration. It makes it easier for the computer to run the ICE most efficiently.
    About the SOC; the computer usually wants it in the middle of the gauge which is probably about 50 %. A cold ICE warmup will let it go higher as will multiple regen stops. Otherwise it won't go higher. AS soon as it gets above half, it goes to the negative split power mode in cruise to get the HVB back to 50 % SOC. The FFH must be different from early FEH's.
     
  3. SD3_Driver

    SD3_Driver Well-Known Member

    Tried a little that way of coasting and it really works, for my daily conmute it is a bit hard to do it but I saw a 2 MPG increase on the trip avg when I tried, it was short, but I was able to "save" a bit of batt power @ the hwy and use it on the final (city) portion of the conmute.. :) :)
     
  4. Right Lane Cruiser

    Right Lane Cruiser Penguin of Notagascar

    Gary, I did try your technique again and saw an improvement for the conditions -- it appears that keeping the SoC low enough to allow a charge during pulses puts the engine into a more efficient load band.
     

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