What Is One Pedal Driving?
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- Опубликовано: 14 июл 2018
- How one pedal driving works. Driving with one pedal in electric cars.
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The Nissan Leaf ePedal allows for single pedal driving. From the Nissan Leaf press kit: "Another innovation that enhances the Nissan LEAF's driving experience is the e-Pedal, which is offered as standard equipment on all grade levels. It allows the driver the simplicity of accelerating, decelerating and stopping the car by using the accelerator pedal alone - a revolutionary innovation that can change the way people drive.
By simply releasing the accelerator, the car will come to a smooth and complete stop without the need to press the brake pedal. With a deceleration rate of up to 0.2g, the e-Pedal eliminates the need for drivers to constantly move their foot from the accelerator to the brake pedal to slow down or stop. This can help reduce stress and increase enjoyment.
Studies by Nissan in Japan, Europe and the U.S. have shown that the Nissan LEAF's e-Pedal reduces the number of times the driver must apply the brakes while commuting in heavily congested traffic. While the conventional brake pedal must still be used in aggressive braking situations, the e-Pedal lets drivers use a single pedal for more than 90 percent of their driving needs."
Source: nissannews.com/en-US/nissan/us...
Thumbnail Photo Credit: bit.ly/2NgHY9F
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3 pedals stick shift , 2 pedals automatic , 1 pedal electric and next logical step will be 0 pedal autonomous cars right?
wow
Unfortunately YES
Hmm, then we'll have -1 pedal??????
3 pedals in the past, 2 pedals in the present, 1 pedal in the future... ...
Remember "real man use 3 pedal" quote... its gonna be "real man use pedal"
Next popular feature, pull back on the pedal to Go reverse!
That's actually a really neat idea. Like a Boosted Board
Or try our special edition, keyboard driven car! You won't need pedals or wheel anymore!
mlok4216 [S-N] but that's either no throttle or SCRATATATATTATATATATATA
Electric forklifts have one pedal for forward and reverse. Right side is forward, left side is reverse. And yes, it sucks.
Just like some ride on mowers of the last 30 (or more) years
I love that driving, without using the break It saves a lot of energy and the break pads and brake discs last for extremely long time.
No brake pedal? Because racecar!
*because nascar
Georgio Henderson nascar is dead
Subie Dan yeah but it's all gas, no brake
Weight reduction bro!
You wouldn't want that functionality in a race car. You want to be able to decelerate as little as possible in some scenarios. Being able to let off the gas without any braking is ideal for that.
I do something similar in my car. Instead of riding everyones ass, i stay back about 3 seconds, and when they slow down, i let off the gas instead of waiting to smash the brakes, ruining the flow, and pissing off everybody behind me. Doesn't come to a complete stop, but is smoother when slowing down in traffic.
Stay back 3 seconds? I'm guessing you don't live in a city.
Kevin Norris no, in the keys. We have one road, usually single lane, for about 105 miles. I can also do it in the city staying back 1 to 2 seconds, staying in one gear lower helps slow down a tad quicker too when letting off the gas.
Florida...thats a totally different planet
Georgio Henderson Yeah, Florida has very little traffic from what I've seen. Here in New York (at least the city), leaving two seconds between the driver in front of you will make you prone to getting cut off. Hell, one second seems to be the norm here. Ironically, leaving space between cars can potentially lead to accidents here given that everyone cuts each other off.
Kevin Norris i live in the keys. Summer is busy season, everyone wants some sunshine. Winter is busy season, snow birds come for warmth. And Miami is literally hell. It's hot af, people crash, cars break down, no one speaks english, and people shoot each other. Detroit was a nicer place to live. New York is hectic, but at least you guys got it down.
Might as well remove the brake system for weight reduction
Because that's safe.. Not!
nope thats a really bad idea
Problem there is the braking force from the motor is no where near as much as the real brakes. Sure it's enough to bring the car to a stop in most driving scenarios however, as said in the video it's not enough in emergency scenarios.
He was obviously joking...
Ino Torres People think you are being serious :/
This is how electric forklifts have been for years and years, regenerative braking that only requires 1 pedal except for panic stops
Yep! Used to work on electric forklifts!
I'd like to see what happens if you put one of those drivers who can't regulate a throttle in this car. You know, the ones who are constantly brushing the brakes to maintain a constant speed. And then you can't tell if they're actually slowing down until their rear bumper starts getting bigger.
Eoin Kenny 😀
e pedal should illuminate the brake lights automatically. I think this type of driver would be a better driver in an EV since they could scrub speed faster.
Jimmy.. you may need to get out of state more....
They Exist, all too frequently in some Jurisdictions (2 foot Automatic drivers mostly - they have gotta keep both feet busy somehow, it's a tradeoff between Accelerator and Brakes, in a real test, the brakes always win). jk. sarc and cynic. (have a great day, just stay off my sidewalk)
Eoin Kenny I cannot stand these drivers. Sometimes I sit behind someone riding their brakes for 500m straight when I'm behind them, foot still on the throttle, maintaining a constant speed. It makes their brake lights redundant because you don't know if they're just going to ride the brake pedal again or actually slow down.
problem with the system illumiating the brake lights when the driver is just modulating pedal pressure to control speed is that it will eventually cause traffic jams. Driver's behind the E-pedal equipped car will see the brake light flashing, and thus put on hydraulic brakes and slow down...the drivers behind them, slow down more, and the next thing you know, everyone is sitting in stop & go traffic just because a leaf driver several minutes ago let off the gas to drop a mph or so to adjust pace with the traffic
That's pretty neat. I wasn't aware of the "ABS-like" effect of regenerative braking.
Where do you get these leafs from? Do you have to harvest them from the Nissan tree?
you need to wait till autumn and than the leaves from the Nissan tree should fall down and you should be able to collect those
MCWoTGuy yeha ok, but I don't know where to find one of those Nissan trees. Can you deLEAfer me some?
Would they be Nissan Leaves? Then, I suppose, if one has only one Leaf left it's probably caused by Leaves leaving.
It's the tree your older brother likes to stand under.
INSTALL GENTOO ah that's why I never saw this tree, 'cuz I only have older sisters. Now everything makes sense
I wonder if your muscle memory will change after driving in this mode. Will you just lift off the gas in an emergency instead of going for the brake?
Jamie Ayres if in an emergency braking scenario where you only use 20% of your braking power I'm sure it's safe to say your bumper will collect whatever you are trying to avoid, not only that but generally if you are braking I'm certain you'd be taking your foot off the accelerator any way..
Jamie Ayres i doubt it,
I was thinking exactly the same thing. Gare de Lyon rail accident comes to mind where secondary brake system was capable of preventing an accident but it was so rarely used in normal operation that driver completely forgot about it in the panic of the emergency.
So having muscle memory of "if i need to stop, i let go of all pedals" seems to be dangerous. The current system of more pressure to the pedal = more stopping really is very intuitive in the emergency where you stomp on the brake with all your power if you panic. Not being used to even move your foot to the brake pedal sounds really bad. The car even applies the brake at standstill by itself, so it really sounds like you will forget about the dedicated brake pedal really fast.
I was thinking the same. A lot of drivers are going to get used to this and learn to do everyday driving completely without normal brakes, so the muscle memory to use normal brakes in an emergency most likely will fade. I would think a more safe system would be so that lifting off accelerator will coast and pressing the brake pedal will use regen braking at first and only apply hydraulic brakes if needed.
That is where the automatic emergency braking comes in.
Good informative video for these technological advances. I use my brakes as little as possible as it is. If you pay attention to traffic thats well ahead of you as well as the stop light intervals than you're "doing it right."
This seems like it would really work with my style of driving. I start braking really gently kind of far away from the intersection. My only concern is you might lose that instinctive shift to the brake when you need to stop quickly.
What about driving downhill? Do i gain power or do i lose power because i have to press the pedal or otherwise the car will stop?
Enlighten me please
If the hill is not that steep you will probably have to press the pedal a bit.
But it probably will still regenerate power. At least the Tesla I drove years ago (without this One Pedal Mode) did this.
Once you let go of the pedal it regenerated energy, but still kept driving (but at walking speed). If you just pressed the pedal a bit (at higher speeds of course) it was still regenerating power, but not at the max possible rate.
If it's a steep hill, you will still need to press the pedal slightly, but you'll also still be regenerating. You're just using the pedal to tell it to regenerate less, so that the vehicle doesn't come to a stop. Or you could put it in regular mode and it will coast more naturally.
Melvin Klein
so pushing the pedal a slight bit will reduce regen rather than accelerate?
Im guessing that if the hill gradually flattens out the regen will be gradually reduced to maintain a specific speed.
It mostly has to do with the motor's construction. Pretty much all brushless motors have to driven by alturnating electric supply. When you you press the accelerator pedal, you are sending a signal to a variable frequency drive, to cycle the electric polarity at a higher rate or frequency. So what will happen is that the motor will attempt to match this excitation by spinning the rotor in sync with the alternating current. And when the motor is running at synchronous speed, it generates an equal amount of back electro magnetic force as the electric supply is providing, in which case the net current becomes negligible. However under load the motor will draw more current to maintain a given speed, because the back EMF is reduced. But if the motor is driven faster then synchronous speed, the back EMF be greater than the supply voltage, and current will flow backwards, then generally the back current is converted back to DC to charge the battery.
This is wrong, brushless motors are synchronous machines the excitation field always has to match the speed of the rotor, what changes is the torque angle, i.e the angle between the magnetic field of the rotor and the magnetic field of the stator
I knew Americans are overchallenged with three pedals... But now two are already too much? 😂😂😂
Just kidding 😉
LMAO, that's so true. I know plenty of people here who don't even know what manual transmission is.
ActionHeinz. Its a foreign vehicle tho.... also, driving with fewer pedals than you have has traditionally required more skill. Except for stops and starts I tend to drive my manual trans cars with just one pedal. Slowing and accelerating with just the gas pedal and shifting without the clutch pedal.
DrewLSsix “shifting without clutch” hmmmm
Mecha Fanboy. Yeah? Got a comment to make?
its called rev matching, and it can be done easily once gotten the hang of. It is easier on motorcycles than on cars because they do not have synro meshes in the gearbox, but it is the same principle in a car
You should use the Leaf for ALL your in car talking videos until you give it back.
It'll let those who say EV's suck to at least accept one benefit of them, *Silence.*
It is wildly quiet and smooth!
And the instant torque. I live in a hilly area so I think I'd get annoyed if it was braking me going down a hill that I wouldn't brake myself during. I have a Honda Accord and it has this technology called Grade Logic and on declines, it downshifts to slow you down. Some people like it. I do not.
Brian Burke If you want to accelerate, press the accelerator...
I don't want that either. I want to coast unencumbered.
Brian Burke, put it in neutral. I do that sometimes, but this is in a gas car with an auto and a console shifter.
My 30 year old Corolla must have been way ahead of its time. because it had "city stop" Automatic brake application, cruise control, lane departure mitigation, blind spot monitoring. Apparently it used some sort of biochemical computer. But for some strange reason they only fitted it to some models, not all.
Not all driver probably compatible with those technology, they need to upgrade their "biochemical computer"
And it's done in the electric smart car. I rarely use my brake. I also have paddle shifters that can set the degree of regeneration from none to medium to full bore.
Glen Atchison an electric smart car... do you ever just wonder what happened to your life?
Volt has this plus the regen on demand paddle. It makes driving on curvy roads so much fun. You can just lift up on the pedal slightly to slow down enough to make the curve and then punch it to accelerate out. It also gives you finer control of your speed then having to switch over to the brake pedal all the time. I love it.
Nice one, thanks for the insights.
I use a one pedal rule when I'm driving every car. If you are using brakes your just wasting energy by dumping heat into your brakes.
I use two pedals because I have manual transmission. Anyway braking is something anyone should avoid in any car as much as possible because it only cases wear and is rather unnecessary in most situations (other than complete stops and emergencies and really really steep downhills.
Can’t wait for more leaf videos!
Also, does one pedal driving affect range, and if so how much more range can you get?
It definitely increases the range, since you’re using only the motor for braking and thus regenerating electricity in stead of wasting it to heat. This is in fact the same story with combustion engines, since the engine is idling or “off” during engine-only braking. Jason has a video on that I believe, and maybe he’d chime in and comment on the real-life effect in range when he has some data.
SuomiFinlandPerkelee yes I’m anticipating that he will release a video soon on that. Guess all EV’s aren’t so boring after all.
SuomiFinlandPerkelee You get double the benefit with an electric car, since you're actually recharging the battery. Obviously with a gas car you don't produce more gas when engine braking.
Regenerative braking is basically the whole reason hybrids exist. If you look at a typical hatchback, in town mpg is gonna be around 25 mpg, whereas a Prius gets 50+ mpg in town despite being a similar weight and shape. This is pretty much entirely from regenerative braking, so I'd say in town you can double your range using only regenerative braking versus not using it at all (although I suspect the car might not let you turn it off entirely). On the highway it's obviously not going to do much for you though, since you don't brake very often.
Daniel Jensen this is very true. And it’s also the same reason hybrids won’t give you an advantage on highway-only driving, assuming it’s not a plugin or you’re not charging it often. But I suspect most of people’s driving is mixed, where you would see the advantage in many cases.
Daniel Jensen in southern Ontario, Canada the assholes brake on the highway all the time! For no reason! Maybe they don’t believe in engine braking.
I've always been a high horsepower,haul ass type of guy . However over the last two years your channel as lead me to a decision to go electric with my daily driver . I ordered my new leaf yesterday so I'll be taking delivery in 3 to 4 weeks. As always thanks for the teachings my friend.
I love E-pedal. I wish my 2016 Leaf had it! B mode braking will slow the car pretty hard until 10-ish mph, but won't bring me to a complete stop.
Omg those pedals in the thumbnail are for a 2002-2007 dodge ram I'm sitting in one right now they're identical!
I've seen people drive using 2 feet to work the brake and gas pedals. LOL
electronicsNmore I do that in my work van if I'm feeling lazy the seat is uncomfortable and I know it sounds super lazy but I get tired of picking my foot up and moving it back and forth all day
My aunt does that. She earned the nickname "F1 Racer"
Bad for transmission
Reece Mayer your kidding right??
Reece Mayer it’s not bad for transmission but it’s unsafe.
I was actually just discussing with someone how nice it would be if your brake lights came on while engine braking in a manual vehicle (especially in tight city traffic), so it's really cool to find out that electric vehicles already have that feature built in.
feels just as normal braking. tried this in vw e-up, amazing tech. !
Good content, only, you should've mentioned that unused brakes in EVs cause rust and tend to stick the calipers on. Although i don't know if there's a safety hazard/precaution concerning that. Can you enlighten me?
Cheers
solution, just come to a complete stop at least once on every trip, it ensures the brakes get used (rarely). lol...(or if you aren't sure about that other pedal, take it to your mechanic every month for them to do a "brakepedal re-calibration" (joke)
Uluç Özcan the brakes are still applied to hold the car when completely stopped. However dude to lack of brake material being worn down from actually braking the calipers and slide pins don’t travel very far, so your statement does have some validity. It would be ideal to have the brakes on these type vehicles serviced depending on driving conditions. If you drive in areas that use road salt, I’d probably have them lubricated before winter and after winter ... otherwise every other year should be safe.
Your brakes still rub, and they rotate every time you drive (not stick). No worries on rust not using them frequently.
I don’t think he (Uluç Özcan) was speaking of rust on the surface of the rotors, but the slide pins on which the calipers operate.
if that becomes a problem, manufacturers could (will) incorporate automatic brake clean function. They can make brakes pump every startup/shutoff to brake loose dust/rust and cycle through the brake system. To be honest though, it's impossible to brake only using 20% capacity all the time. Traffic happens.
what happens at highway speed, maybe on a downhill slope? Will the brake lights automatically turn on as soon as I release the gas pedal? I often find myself simply slowing the car down by friction rather than using the actual brakes on my non-electric car...
maybe watch the video for your answer? 🤷♂️
Slowing the car down by friction????.... Seriously?😂😂😂
phenex551: maybe Fred Flintstone style....
You answered all of my burning questions, especially the one about how the brake lights work.
this is why i love youtube. thanks for the vids dude
For everyone wondering: .2 g’s deceleration means 30 -> 0 mph will take you approx. 7 seconds, and 60 -> 0 would take double of that.
Also, you would move approx. 50 metres or 160 feet forward during this time, or 200 metres / 640 feet in case of 60 to 0 mph. All the values have been rounded to the nearest 10.
SuomiFinlandPerkelee Thanks. Did you obtain these numbers from some literature? Or did you calculate them? Or perhaps your own a new leaf and did some experimenting.
phenex551 calculated them with a simple function s=(v2-v1)/a, s=time, v=velocity and a=acceleration. .2g’s is 1/5th of a g, which is the gravitational acceleration of approx 9.81 m/s^2 depending on where on earth you’re at. Then, for the distance you simply multiply the maximum velocity by the time and divide that with 2.
I thought if the speed is doubled then the braking power required is 4x.
I guess they meant 4x distance
Jokes on us manual folks because we've been doing this for years, just engine brake bro 😉
Tried this with a Bolt in downtown Toronto. Took like a block to get used to it - kind of an extension of the deceleration you get with a manual which is what I normally drive. Really if you do a lot of stop and go, particularly in city, this is great especially as its combined with the instant torque.
I drive a stick shift and as you've talked about previously downshifting to slow down is a really great way to save brakes overtime. Sounds like one of the major differences here is that with a manual your brake lights don't warn drivers behind you if you're slowing down, but with the super cool electric cars they do!
You don't slow down in ICE car as fast as you do in an eV does When regen braking enabled
I do 0 pedal driving, with current gas prices lol
Does this eliminate coasting capability?
there is a setting to disable the feed back to the batteries
I don't think so because you can touch the gas pedal just a little bit and it will disable the engine brake - or you could just turn the system off. (haven't tested it tho, just assuming it)
JoshL You can still coast but the difference is that you will still need to push the gas pedal down a little. At least that how it works in my car, it may be different in others
I was wondering about that, too. Even more so, since they say, that coasting is the most energy efficient (at least with combustion engines).
it regenerates lots of energy to the batteries when you coast.
around 300~ meter of downhill coasting regenerates around 4-5 miles of driving!
The hydraulic breaks locking after the full stop is nice. Earlier in the video I was thinking someone who's texting could hit you from behind and push you into the intersection.
Very interesting video, thank you!
Do a BMW I3 vs Nissan Leaf video
It's not only electric cars you can do the 1 pedal driving with.
Basically you should do it with all ATVs and tractors etc which have a hydrostatic transmission. If you let of the gas they usually break slowly by them selfes and if you would be to slam on the break all the time it would destroy your gearbox/axel because of the "water hammer" effect - and that wouldn't be nice, would it?
"water hammer" oh give me a "break"...just tell everyone you dont know what you are talking about
stickloaf Okay. According to Wikipedia or other sources there is an effect called water hammer
"Water hammer (or, more generally, fluid hammer, also called hydraulic shock) is a pressure surge or wave caused when a fluid, usually a liquid but sometimes also a gas, in motion is forced to stop or change direction suddenly, a momentum change. A water hammer commonly occurs when a valve closes suddenly at an end of a pipelinesystem, and a pressure wave propagates in the pipe"
As far as my knowledge goes when you hit an the foot break on a vehicle with s hydrostatic transmission you force the pump to go in its zero/non pumping position or lock up the rear axel so the fluid can't flow through there as it wants and then the upper mentioned effect kicks in, harming your parts in the long therme.
However I have to give you the credits for noticing that I'm not an engineer so there is a fair chance that I'm in deed wrong.
If that's the case and you know better: teach me, I'm eager to learn.
Humbucker 007 Most hydrostatic systems have relief valves built in that can allow oil to go from the high pressure side of the circuit to the low pressure side of the circuit. The high and low pressure side is determined by the position of the swash plate of the pump. (This allows for forward and reverse). In the event of the pressure on the high side becomes too great, it can run accross the relief to the low pressure side.
Seth ok fair point. I didn't thought about them I had the older transmission in mind or the ones in the smaller Iseki tractors where they don't do it to probably get you to by the next bigger tractor
Great video with lots of stuff I did not know (the regen ABS for example). I have test driven a Tesla S on a test track in Sport mode and the feel you get from the gas pedal is amazing, very responsive and great "engine braking".
Very well done.
Your next video should be which is better, hub dyno vs roller dyno.
Also explaining different dyno's etc mustang dyno, dynojet
and contrast with the dino's
Because two pedals are too many I guess...
Ryan Gehret or because this feature will make you achieve more range in an electric vehicle...
/whooosh
most people use the pedals like an on/off switch. they don't bother modulating. technically you can use just the accelerator through rush hour traffic if you just pace and modulate the accelerator properly. however people are impatient, people want to close the gap in front as fast as they can and slow down in kind.
Electric motors should have enough cooling to take the breaking.
Because god forbid actually needing to pay attention to the car to drive
What a great video!
Jason, a more common use of one pedal driving can be traced back to hydrostatic transmissions (most commonly found in garden and compact tractors), where the valving of the transmission direction pedal does both the braking and acceleration. Biggest difference is there is zero power recovery. I imagine it would be odd for most people to drive that way unless you operate a hydrostatic tractor on at regular basis. Cool stuff! Thanks for this one! Cheers!
It took 4 years for this comment to get a like
Tisk, Tisk internet 🧐
So, if you think the driver of an electric vehicle is brake-checking you for following too close, relax, that's just how their cars work.
I never realized my brake lights were engaging while using regen. I thought I was slowing down without warning to the person behind.
Glen Atchison On second thought, I should check this. It doesn't make sense that they would implement this behavior. Maybe there's a config setting for the brake light.
Well from what I read, the behavior of the brake light varies among manufacturers. Some cars use an accelerometer to activate the brake light under hard deceleration, others activate the light based on the relative position of the pedal and others have different modes for even more options. So, I guess..... carry on. heh
My Subie is pure gas but has adaptive cruise control. It will try to use engine braking and downshifting to maintain following distance before it applies the brakes when slowing. It has a little image of my car, hash lines to show my following distance selection (I can choose my following gap depending on traffic) and an image of a car to show if it detects the vehicle ahead of me. The image of my car will have my brake lights on/off depend on if my brakes lights are activated or not. It let me knows if I'm downshifting or braking. It seems logical to implement the system on an EV and let drivers know if they are or are not alerting other drivers to their deceleration.
Alternatively, stop following too close and then you won't have to worry about brake checking regardless of if it was intentional.
Lol guess next will be mind control pedal cause using 2 pedals is too much lol one will be too much soon...so bring on mind control driving lol
Is there KERS under regular braking like in motorsports or is that completely separate from the motor system?
Nice video ... Great !
Just waiting until we hear about someone getting into an accident because they get used to this and forget their gas car doesn't brake automatically.
There will always be bad/inattentive drivers, this is just another excuse for them.
The car is not braking by itself... its just as if you would use the enginebrake as in a gas driven car
This explains what I believed to be people tapping their breaks constantly. Now I will avoid following electric cars.
Adam Marshall: (??brakes??) Yes... Maybe, Hybrids coasting are causing all the roadrage, people think they are getting "brake checked" they are just following a moderately incompetent "hypermiling" Hybrid or electric driver..... (People, Please Don't Force them off the road and punch them in the face, they didn't realise they were causing such aggravation.)
NB. To those drivers: Hypermiling doesn't work with regeneration activated.... lol.
It's based on G's, not on accelerator position.
That sounds really helpful when cresting over a mountain, then you comes up to a 10kilometre brake run. Even with combined braking; there is potential for substantial energy capture, and saved brake pads.
Today I learned what the B gear in my 6 year Honda Accord Hybrid was for ❤️
The development for this level of automation in cars scares me
Would be weird to get used to.
I was surprised, but honestly used to it after about 5 minutes. Very simple and intuitive.
It's actually quite easy and very intuitive. Would take you about 7 minutes to master... give or take 😉
You get used to holding your foot a certain way on the accelerator when you want to coast as well. It's very intuitive. I had a 30 minute test drive of the 2018 car and it was a snap to adapt, but I had leased a 2014 LEAF for 3 years, so I already had my brain adapted to driving a car with mild regen. Honestly, after returning to a gasoline powered car, I miss this a lot. My next car will be another EV.
can you help me understand how is the feeling any different from engine braking in a combustion driven car? i drive manual pickups and if there´s enough road I brake only using the engine and not the brakes. Maybe its different with automatics?
Felipe, EVs feel more like manual transmission cars than automatics. It's one reason I like EVs for a commuter - the feel of manual without the constant need to use the clutch in traffic. I prefer manuals, but its a pain with my very busy commute. Automatics tend to want to coast more since they will freewheel in certain gears, though most in lower gears will compression brake as well. EVs in neutral (or with your foot in the right position on the accelerator to prevent regenerative braking) will still coast better than automatics, though, since the transmission doesn't provide any parasitic drag. I hope this answer helps.
That's really cool!
I recognize that neighborhood! I lived downtown several years ago, and loved walking or biking to Hyde Park. I did a lot of shopping at the Co-op. I loved it-during the Summer!
Brakes will seize up if you don't use them
16ats rust like crazy
Moose54656 exactly. Especially in snowy areas.
Yeah I just replaced the rear brakes on my commuter from lack of use. Fronts are fine but the soft braking I usually do just doesn't actuate the rear brakes enough.
I try to get off the accelerator early to avoid braking because braking is wasted fuel, but now I'll probably do some hard braking once in a while.
No... they're moving every time you drive and lightly rubbing. Seize? Seize would indicate you literally couldn't move.
Engineering Explained greetings from Europe where snow and salt is very common. And brakes will seize up. No this doesn't mean that car wont move at all, brakes arent activated all the time. Well ofc when car sits for 5 years or something then yes, pads will stuck but the mechanism also will seize. Pistons and older cars have handbrake with cable and such. For example automatic car and e-brake, you hardly use it beacuse of the "park". And eventually brakes will rust stuck. Sorry if my english is off a bit
Seems like another thing to make drivers worse. Imagine having someone a bit thick, learn to drive a car like this, they wouldn't be as conditioned to full time brake pedal use, thus more likely to cause a rear ending. Driving is and has always been an active affair, keep it that way.
On a prius this is not a problem, if you just let off the brake the car will use the regenerative brake, but only slightly, no way it would stop you. As you apply the brake slowly it increases the regeneration until right before you come to a complete stop. If you brake pretty hard it maximizes regeneration and the normal brakes at the same time. And of course if you jam on the brakes, it jams on the brakes. Very cool system.
This sounds like the way many forklifts work currently. If you learn to drive this way it will be no different than having 2 pedals.
I'm a huge EV fan but can see what you mean. However I would presume that if someone really needed to stop, they would instinctively go for that break petal
Exact reason I always use my turn signals even if it is in the middle of nowhere. 1 it's the law, 2 I don't know if there is someone in a blind spot, and 3 to train my muscle memory. Use it or lose it.
Finally saw the new Leaf in real life yesterday. Loved it!
When I saw the break lights coming on I thought it was using the breaks and I've stopped using epedal. Now I know that it doesnt and going back to it. So curious how it will work on really icy road. Not hopefully but will test it shortly here in Montana. Thanks for a great video and great explanation!!!
This isn't really anything new, truckers have been doing this for decades
+Roger: "truckers have been doing this for years" And having engine braking synthesize fresh diesel to put back into their tanks?
Levenkay my thoughts exactly 😂 Roger obviously doesn’t quite get it
Levenkay no, even better
They stop burning fuel all together
Levenkay ... they've been driving with one pedal. But please be pedantic and remove context so your joke works
+Roger: Eh? These comment pages generally fail to preserve the continuity of remark-and-response, so it's necessary to explicitly reference the comment to which one refers. In case it isn't clear, I simply intended to point out that regenerative braking, however it's done, actually recovers a part of the vehicle's kinetic energy for later use in propelling that vehicle. In order for "engine braking" an ICE to match that feat, it would have to somehow make new fuel as it slowed the vehicle. And in no way is "ceasing to consume" better than "making more".
All fun and games until you get rear ended and dont have your foot covering the brake
Why? It holds the mechanical brakes. Lots of cars do this now when you come to a stop, not just EVs.
Nothing is stopping you from covering the break
Great video! Have you done a comparison video on the economy of an electric car vs ICE car yet? (Total cost to own) We are contemplating replacing my wife's car with a Leaf and with all the rebates it is tempting. Also, the ePedal feature is so fun to drive with!
I have not, though I’m planning on it!
I've been doing something similar with regular cars. I've learned the engine braking strength of different cars, and can slow down most of the way without using the brakes, when there's no one behind me. I don't do it so much with a car behind me, because impatient tailgaters, nuff said. Interestingly, the engine braking is better in the winter, I assume because the parts and lubricants are colder, providing more friction.
I have a Saab from 99 that runs on petrol and I mostly use engine braking whenever possible so kinda the same thing only that I need to use the clutch aswell and at lower speeds I actually need to use the brake.
I searched for a video like this because I was wondering about 3:20 - do the brake lights turn on, and I'm glad that's answered
It was also neat seeing what looked like a steering column right behind the brake too
Thank you for showing that the brake light activates during this process. It was one of my concerns.
Same thing applies for gassers, but you eventually have to use the breaks to stop, but you can extend the break life if you use it as little as possible
Excellent show
From what I understanding hear and how I drive, would be too use the gear to speed.....so at 30mph im in third, 40mph in 4th and the diesel at around 2k. How does that compare t what your trying to say in your great video? Thanks.
That part about the anti lock braking with regen is really cool, another plus for electrics. And I hope I'm not giving away too many secrets, but fun to see the North End on a popular channel like this.
Hey I have a question. I'm about to buy this 5.0 and when I test drove it, the clutch was super light. Like I didn't have to apply any pressure to the clutch. Is that a bad thing? Or is that how a performance clutch suppose to feel. Any help?
Nice video and explanation. I may be missing something, but it seems dangerous. In driving with a standard brake system, every time I brake, I move my foot over and press. This process is completely conditioned in my mind, and the only decision is how hard to press. With this system, sometimes I brake my letting up and somethings I brake by moving to the brake pedal and pressing. Two completely different processes depending on the situation. In an emergency, while making a split second decision, I can see how confusion can occur resulting in less effective braking, or even more likely to press the accelerator instead of the brake pedal. What do you think after using the system?
One issue with this I have on my i3 is that since the disc brakes almost never activate, they get covered in rust and dirt. So when the do activate e.g. when the battery is completely full, it makes an awful scratching sound. I try to occasionally brake hard to wear off the oxidation, but it's never enough to get them completely clean. (I can't constantly panic brake for no reason in traffic).
Am I supposed to have someone sand them off or something?
You answered the questions that came up during the video nicely, well done on the anticipation part Jason ;-) I still doubt I would ever get used to not using the brake pedal for slowing down, though I could be wrong on that department.
curious if you've driven a BMW i3, and can compare to the leaf?
I’m not clear on the brake light. If I’m trying to go 55 and I see I’m at 56 does backing off the throttle a tad result in the brake light illuminating? What if I’m punching the throttle on a steep hill? Will the brake light illuminate at the top of the hill when I no longer need the extra throttle to maintain my speed?
ok so how does the pedal know how far to go after you let go of the accelerator before the car should be at a complete stop? Does it use sensors, and if so what if you just want to stop? is there a specfic amount of feet it will go?
The forklift we have at work can be driven like this because just as here the motor will automatically reverse and brake the machine to a stop when you let go of the accelerator pedal. I mostly only need the brake pedal to hold the machine steady at sloping ground when handligt a load, never when driving it around. It s kind of neat
Which is more efficient on highways, coasting/standard mode vs e-pedal step/regen braking with a nissan Leaf/Kicks?
what if you pull up on the pedal really fast like with ur foot would it stop faster?
Didn't realize there was so many interesting nuances to electrics. Rad.
Going to try it in my moms 2012 Camry hybrid! I will let you know if it works!
Very similar to one of the ways suggested in Smith System. Of course, this defensive driving method was designed back in the days prior to automatic transmissions being a thing but it works out with them as well. Reportedly, using a method similar to 1 pedal driving (using the brakes as little as possible and letting the engine maintain vacuum to reduce fuel consumption) many agencies who practice the method have seen as much as a 29% decrease in fuel consumption.
Also very similar to how diesel-electric locomotives slow down.
So dose this system put more pressure on other wear and tear parts such as drive sharft
Upon taking ones foot off the pedal do you gain battery power or replenish some ?
Does the one pedal mode respond in exactly the same way when the HV battery is fully charged? I know the 30kWh Leaf will not give the higher level of braking in B mode at high SOC.
I think it would be a new technique to learn. I regulate my stopping point by changing the pressure on the braking pedal, but now you cannot do that the same way. You have to time the position, when you let the pedal go, or your braking light will be on and off constantly
Can anyone speak to how that 0.2 g breaking affects driving on the highway? It seems like an increase over deceleration due to friction and air resistance. I can usually get by with intermittently having my foot on the gas to maintain my speed. Does this make it more of a necessity to keep your foot on the gas or use cruise control to maintain constant speed on the highway?
Just something else to depend on the car for. I stick to the old fashioned 3-pedal setup and it works just fine for me.
Hey man! I saw you in the Minneapolis/St. Paul airport today! (7/15) It was good to meet you!!
Does the leaf regenerate electricity when releasing gas in non e-brake mode? or does it disengage the wheels from the engine in that case? I know some hybrids generate electricity when rolling freely, does leaf not?
Combined with one of those radar collision prevention things you might never need to break yourself in traffic
You made it! Thank you
ive heared that not using the breaks that much due to the "electric breaking" results in the break discs corroding early, which is why they put drum breaks on the rear axle of some prius models. is this an issue with the Nissan leaf as well?
What about if you are on that configuration and you want to stop softer than 0.2 Gs? Can you regulate that breaking?