Hybrid Eco vs Normal vs Slippery modes - short distance

[Jim Paradise]

Thanks for the tip!

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[Mightybeast]

I only use ECO mode. I’m on track to get 850+ miles on this tank.

Confirm what gas grade, tonneau cover or mud flaps you use.

 

[Afarfan]

No mud flaps. No bed cover. Reg gas

 

[GPSMan]

It would be nice to know if ECO mode (my preferred mode) provides adjustments to Variable Valve Timing to (further) increase the efficiency of the Atkinson cycle.

So far, this forum seems to regard ECO and slippery modes as adjustments to regeneration. While this is obviously true, it may not be all that is going on. My longer drives still seem more efficient in ECO. Increased coasting from slippery mode, wouldn't seem to match my results.

Regen is black & white, I actually measured the regen in each mode.

It is certain that Eco has stronger regen than normal with a full lift off the go pedal, and slippery has less strong regen when you lift off the go pedal.
The amount of power (watt-hours) you can generate are the same in any mode.

Eco will slow you down to 3 mph in 1/8 of a mile and put 10% charge into the battery.

Under the same conditions Normal will slow you down in 1/4 of a mile and put 10% charge into the battery.

Under the same conditions, Slippery will slow you down in 3/8 of a mile and put 10% charge into the battery.

That much is known. Why do I prefer Slippery?

In Eco my engine is off for 1/8 of a mile while I coast.

In Slippery my engine is off for 3/8 of a mile while I coast.

I have a tool to measure timing.
I'll look into that next.

 

[GPSMan]

I do not have a data logger.
(on the wish list)

I have a ScanGaugeIII that gives live, instantaneous read-outs.

Method:
I made 6 accelerations 0-45 MPH in Slippery mode.
On the same roads, made 6 accelerations 0-45 MPH in SPORT mode.
I kept the power needle as close to 10% as humanly possible on flat roads.
In sport, engine starts right away.
In slippery, I spiked the pedal for an instant to get the gas engine to come on right away, then backed down to 10% area. I chose these modes because I considered them most different to show any contrast.

I had one hand on the wheel. One hand on the camera. Both eyes on the road. I did not view the video until I got home.

Initial findings. Without a data logger to look for tiny differences, I visually saw NO DIFFERENCE in timing. Each run was within a small percent of each other run. Probably would average out to be the same.

What was DIFFERENT was engine torque. Consistently engine torque was 20% HIGHER in SLIPPERY mode!

(which means electric torque was 20% lower in slippery mode)

In sport mode engine rpm remained LOWER because I was getting more electric torque in this mode.

Ain't that a kick in the pants!

 

[GPSMan]

So previously "proven" (or at least demonstrated) was regen torque (negative or slowing torque) was less in slippery mode.

Today I demonstrated accelerating torque (positive torque-electric) is also lower in slippery mode.

 

[GreenLady]

Regen is black & white, I actually measured the regen in each mode.

It is certain that Eco has stronger regen than normal with a full lift off the go pedal, and slippery has less strong regen when you lift off the go pedal.
The amount of power (watt-hours) you can generate are the same in any mode.

Eco will slow you down to 3 mph in 1/8 of a mile and put 10% charge into the battery.

Under the same conditions Normal will slow you down in 1/4 of a mile and put 10% charge into the battery.

Under the same conditions, Slippery will slow you down in 3/8 of a mile and put 10% charge into the battery.

That much is known. Why do I prefer Slippery?

In Eco my engine is off for 1/8 of a mile while I coast.

In Slippery my engine is off for 3/8 of a mile while I coast.

I have a tool to measure timing.
I'll look into that next.

I think I might becoming a slippery mode convert. Tyger and I ha a day trip which included winding roads, switchbacks and hills on the way up and hills and interstate on the way back. I chose eco mode for the way up, about 45 miles and slippery for the way back. I obviously went a lot slower with the winding curves and thought I would get fantastic mpg and ended up with around 47 mpg (which is still pretty darn good). On the way back I ran the interstate most of the way averaging right at 70 mph in slippery and I averaged 53.5 mpg! Went faster and got better mpg, I like it! I’m going to keep experimenting until I do the long road trip in a couple weeks. Eco or Slippery

 

[Old Ford Guy]

That would seem to be logical...except you get the best efficiency in slippery mode in most circumstances.

Doesn't bother me, but I have noticed that my wife never bothers switching the modes (no matter how many times I say something).

you too? welcome to my world. as far as my darling Bride is concerned those mode buttons may as well not exist..... sigh.

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