gemdc Report post Posted March 9, 2013 acdii - I think maybe the EV mode is helping on occasion even though it never goes into pure EV mode. I noticed the discharge arrow appeared below the battery icon the other day when I ran cruise at 68. Just enough to cast a doubt that the ICE is really getting 40 mpg on it's own. My run was not level so would probably charge some downhill and discharge on the uphill side. Never took the battery below about 3/4 though. Quote Share this post Link to post Share on other sites
acdii Report post Posted March 9, 2013 It assists when needed, just like the Gen I. Trick on mine, and maybe those like mine is to keep it from going into EV at anything over 40, and it seems to get better than is I use EV above 40 while cruising. Quote Share this post Link to post Share on other sites
lolder Report post Posted March 10, 2013 acdii - I think maybe the EV mode is helping on occasion even though it never goes into pure EV mode. I noticed the discharge arrow appeared below the battery icon the other day when I ran cruise at 68. Just enough to cast a doubt that the ICE is really getting 40 mpg on it's own. My run was not level so would probably charge some downhill and discharge on the uphill side. Never took the battery below about 3/4 though. Energy goes into and out of the HVB all the time unless you are on a level road at constant speed and the HVB is at it's normal, average state. It is doing that so the ICE doesn't need to change it's operating parameters as much or as often. If your HVB SOC is above normal, the system applies a little energy to MG2, the traction motor and MG1, the transmission control lowers the ICE rpm a little until the HVB SOC is normal ( it's about 1/2 in the gen 1 FFH ). If the SOC is below average, the rpm is increased a little. Above maximum EV speed, the EV mode only is used sparingly except for acceleration and minor energy balancing. 1 hybridbear reacted to this Quote Share this post Link to post Share on other sites
hybridbear Report post Posted March 10, 2013 Someone needs to do a test at 61 mph where the EV will cycle and again at 63 mph where it wont over the same road with the same SOC, temperature and wind. Speed costs 0.6 mpg per 1.0 mph speed increase, temperature costs 0.2 mpg per 1.0 º F. lower temperature, wind costs 0.3 mpg for every 1.0 mph. headwind. Trips in different directions on the same day might easily be 10-15 mpg different with these factors. The 2010 - 12 FFH's do not routinely equalize their HVB cells. You will know when they do as EV is completely inhibited for 15-30 minutes. Mine has done 3 or 4 times in 52,000 miles. If your above maximum EV speed, you will only notice it by the SOC going higher than normal max ( without braking or downhill ) , the instantaneous mileage deteriorating until the SOC spends ~ 15 minutes at max. It then discharges to normal and you get fantastic mileage during that period. I went 4 miles in EV at 40 mph. the last time mine did it. If you go into reverse during this time, the equalization event will cancel and if it wasn't complete, it may start again soon. It's all automatic, nothing can go wwwwrrrroooonnnngggg. Jeff_h & I have been talking about doing just that. There's a loop here in Minneapolis I could do, but I want to wait until the weather is warmer in order to get better results. Quote Share this post Link to post Share on other sites