Regenerative Braking

[PaulGrun]

Oh sure. Very true. I only post individual trips to demonstrate what the vehicle is capable of.
There is a “Fuel Economy” stat our trucks maintain that is a rolling overall average which for me is over 20k miles now.

IMHO, posting the avg over a trip is useful. The thing is, posting an avg over such a short distance paints an unrealistic picture of the truck’s capabilities.
Then as night follows day, there’ll be posts about, “my truck is only getting 20! What’s wrong with my truck??!!?”
That’s why I mentioned it.
Drive on

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[FaaWrenchBndr]

Stainless WRAPPED
The front and rear frame components are cast aluminum, the passenger compartment, doors, and upper bed reinforcements are welded stamped steel. Given the propensity for stainless to pit from contamination, it's way over-hyped. Stainless kitchen appliances are starting to now come pre-wrapped in a PPF. That's 5-20k$ to have done to a cyberfridge

Well it’s a fine looking dumpster……but not a “truck” I would own

 

[Samson16]

IMHO, posting the avg over a trip is useful. The thing is, posting an avg over such a short distance paints an unrealistic picture of the truck’s capabilities.
Then as night follows day, there’ll be posts about, “my truck is only getting 20! What’s wrong with my truck??!!?”
That’s why I mentioned it.
Drive on

I remember a good one where someone posted a nice long trip over a hundred miles that was coming down from the Rockies lol. Impressive if not quite illustrative ?

 

[JerseyGlock]

Notice how my mpg drops from 18.4 to 17.8 as I accelerate from 74mph to 102mph in 13 seconds. I eased my foot into it demonstrating the effortless nature of the PB in another thread but it shows the direct mpg hit driving style has trip to trip.

The bouncy nature is from my hand not the vehicle. I was concentrating on the road ahead lol.

lol, boost .....!!!

 

[bdginmo]

Saw a $133k stainless steel dumpster today

I feel like you're being unfair to dumpsters by equating them to cybertrucks. At least dumpsters do what their designed to do and fulfill a vital public service. Cybertrucks...not so much

 

[Samson16]

Given the propensity for stainless to pit from contamination, it's way over-hyped. Stainless kitchen appliances are starting to now come pre-wrapped in a PPF

Noveske SS holds up pretty well

 

[FaaWrenchBndr]

Noveske SS holds up pretty well

I’ve been a fan of their barrels for many years now.

 

[FaaWrenchBndr]

Anyone have any solid info on regenerative breaking and it’s possibly increase in efficiency when using Eco versus normal mode?

I have heard a few people say they get where they feel they get more energy returned in Eco but maybe it’s just me, I seem to get better mileage, using normal than Eco. This is making any sense?

 

[Samson16]

Anyone have any solid info on regenerative breaking and it’s possibly increase in efficiency when using Eco versus normal mode?

I have heard a few people say they get where they feel they get more energy returned in Eco but maybe it’s just me, I seem to get better mileage, using normal than Eco. This is making any sense?

Sure it does. I only have anecdotal experience, but Eco mode degrades throttle response, so perhaps it conditions their right foot to apply gentle steady pressure to the brake thereby maximizing regen.

You get better mileage when using Normal mode because Eco mode is a horrible time suck and a terrible way to go through life.

 

[Porpoise Hork]

That’s your average over 31.4 miles which is not far enough to be considered an accurate aberage. A 70/30 ratio of hey/city equates to around 21 miles Hwy and 10 city.
23.4 mpg over the course of a tank of gas is still very good.

True that it's considered a short trip. The point was to show that it is not hard to reach those sort of MPG numbers in this truck even with the majority of miles being non-electric. However, if you are able to regularly hit numbers like this the overall MPG for the tank will be much higher than what it's rated for.

Speaking of, it's probably one of the only vehicles I have owned that actually meets the EPA's MPG estimates of 23/23. It even gets better fuel economy than my wife's 24 Kia Sportage, which weighs over a ton less and is much more aerodynamic than the rolling wall that is the F150. Then I also drive much more conservatively then she does. She'll typically get 19-21 mpg in it where I can easily hit 26-28 mpg in the Sportage. When she drives the truck she gets closer to 17 mpg... Barely...

 

[Calson]

Our 2007 Prius had this feature as does our 2022 plug-in hybrid and my wife insists on using the brakes thinking that it is recharging the battery. I believe the gain is trivial and does not offset the reduced life of the brakes. Drivers who get exceptional mpg with any vehicle try to coast as much to a stop and minimize fuel consumption with this approach.

 

[Gros Ventre]

I find the best MPG occurs on rolling terrain, such a Denver, CO. Being light to moderate on the gas pedal helps.

 

[dochawk]

Our 2007 Prius had this feature as does our 2022 plug-in hybrid and my wife insists on using the brakes thinking that it is recharging the battery. I believe the gain is trivial and does not offset the reduced life of the brakes.

Err, that's not how regenerative braking works. It doesn't use the brakes.

A DC motor and generator are the same thing. So when instead of applying voltage to the motor, you put a load on the terminals (the charging system), it slows the wheels, drawing off energy.

Generally, if you press lightly on the brakes, you only apply regenerative braking (i.e., motor load), while if you press harder, you also engage the brakes.

 

[HammaMan]

Err, that's not how regenerative braking works. It doesn't use the brakes.

A DC motor and generator are the same thing. So when instead of applying voltage to the motor, you put a load on the terminals (the charging system), it slows the wheels, drawing off energy.

Generally, if you press lightly on the brakes, you only apply regenerative braking (i.e., motor load), while if you press harder, you also engage the brakes.

None of the hybrids these days operate DC motors -- they're 3 phase AC. The inverters are bidirectional and have a rather large capacitor on them for smoothing. This is the reason why even after powering down the BECM voltages must be verified before disassembly (verifies the bleed resistor is working). There's a bleed resistor attached to the capacitors to drain them instead of leaving 300+ volts of DC sitting in the cap. There's also charging resistors for charging the caps before the main contactors close. There's a few seconds that elapse between "starting" an EV before it can move as the caps are charging and the primary contactors aren't yet closed.

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