"Low" in the HYBRID

[MakinDoForNow]

Actually, the "Eco" mode gives you a lot more regen braking. So much so, I never tried the Low mode.

At about 50 mph Try to get 100% RATE of Regen (max on green area of gage) and also 100% total Regen that shows amount recovered while using brake pedal= almost impossible to do. Then repeat while in Low not using brake pedal until RATE of Regen drops to around 50% before using brake pedal and it's easy to do and recapture 100%. This of course assumes that computer is actually not using hydraulic at all and the 100% rate of recapture is all the computer is doing. As far as rate of Regen take truck to 50 mph in standard and look at % of regen on gage. Repeat in eco mode from same speed (50 mph) note max Regen. Then repeat in slippery mode and note max rate of Regen. Everything else being equal which is next to impossible since soc of HVB along with other things will not be identical. Note that everything being equal eco mode will get more mpg than standard and slippery will get even better mpg not because of more Regen captured but because they each coast further than the one before and do not suffer the energy lost converting the momentum to battery storage and then conversion lost to converting the electricity back to momentum. You might get better mpg in standard because you have learned to drive it better than you will in eco or slippery because you have not perfected those modes as well S you have standard.

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[Bargeld]

Focusing on regen shouldn't be a priority. The goal should be for the HVB to never go empty, while also using as much 100% electric as possible. Regening is more inefficient than just coasting, but it charges the HVB... but if your HVB isn't in danger of being empty, then you shouldn't run in the more inefficient mode.

The HVB also charges via normal operation as well, the engine/alternator itself is constantly charging the HVB, independently of the brake and reverse motor regen. Again, depending on the specifics of your drive, just normal mode (not eco) in conjunction with normal braking (not L, not ECO or slippery) might/should be able to keep the HVB going without any other modes or buttons or tricks.

Hypermile-ing is more about staying electric and trying not to ever slow down. Same technique that truckers have been doing for over 50 years. Less loss = less to make up. Otherwise, drive in the most efficient gear/mode you can.

Also, from the manual:

This is not due to braking, but instead due to engaging the motor more strongly, and subsequently increasing the motor regen amount (and reducing the amount of braking regen available in most circumstances, but not all).

 

[GPSMan]

I've done EXTENSIVE experimenting with additional real-time data from the OBDII port.

L has its advantages for slowing the truck / truck-trailer combination.

I've yet to detect any advantage for going uphill. But I'm always looking.

Just today I had to pull a heavy load up a several mile 11% grade. In tow/haul mode. Pedal was not to the floor. Power was not at maximum. About 75% at 40 mph.

Out of curiosity I pressed the L button while in the throttle 75% and the truck dramatically slowed down. As this was not my intent and I didn't want to lose my momentum on this strong grade I aborted L after 2 or 3 seconds.

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