Wear on motor(s) with 1-pedal driving?

[Londonboy49]

Has a survey/study been done on the effect of one pedal driving on wear of the motor(s).

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[grein002]

Since the motors are used for regen whether 1-pedal is on or off, I would not expect there to be much of a difference.

 

[Londonboy49]

Not a techie but that was my impression. Just wanted to clarify. Thanks.

 

[tbrumleve]

Whether the motor is being used to drive the wheels or used to generate electrons, it’s spinning. There aren’t many wear parts besides gears in the electric motors. Heat is an electric motor’s worst enemy. Electric motor Mean Time Between Failures is measured in tens of thousands of hours.

 

[superdave80]

There is a misconception that somehow the car will operate 'differently' depending on if you use 1PD or 2PD mode. It doesn't. It's the same motor/brakes/regen system regardless of which mode you use.

It's like there is a device that turns on, and you have the option to push a button or pull a lever. There is no difference in how the device operates, it just depends on whether you like pushing buttons or pulling levers.

 

[Deleted member 19354]

One tip is to always use premium electricity as to avoid knocks and pings 🫨

 

[AliRafiee]

Tesla might have done one since their cars have the longest history of that feature. Ask on a Tesla forum.

 

[Teslaeata]

Has a survey/study been done on the effect of one pedal driving on wear of the motor(s).

Well, since you mention it, I’ve used OPD for all of my 117,500miles in 50 months and have been analysing the transmission oil - the motor is inside the wet transmission.

5/8 of zero particulate wear matter found in the oil.

I expect there aren’t so many qualitative studies around like this.

 

[MuckyMach-e]

Well, since you mention it, I’ve used OPD for all of my 117,500miles in 50 months and have been analysing the transmission oil - the motor is inside the wet transmission.

5/8 of zero particulate wear matter found in the oil.

I expect there aren’t so many qualitative studies around like this.

Um, what does that mean @Teslaeata? Isn’t 5/8 of zero still zero, like 8/8 of zero or 1/8 of zero?

 

[Teslaeata]

Um, what does that mean @Teslaeata? Isn’t 5/8 of zero still zero, like 8/8 of zero or 1/8 of zero?

I’d usually say 5/8 of F*** all which is a figure of speech which, as you say is zero and was my point.

So little particulate wear makes no difference

 

[MuckyMach-e]

good one!

 

[Teslaeata]

There is a misconception that somehow the car will operate 'differently' depending on if you use 1PD or 2PD mode. It doesn't. It's the same motor/brakes/regen system regardless of which mode you use.

It's like there is a device that turns on, and you have the option to push a button or pull a lever. There is no difference in how the device operates, it just depends on whether you like pushing buttons or pulling levers.

There will be slightly more torsional & other forces when driving or on overrun including OPD compared with a free-spinning motor but whether enough to make a difference to wear is reliant on design & build standards which thus far appear sufficiently high to withstand.

 

[cyeung]

In general, the motor assembly consists of:

1. Rotor - Contains an arrangement of permanent magnets and ... well ... rotates.
2. Stator - Contains an arrangement of coils of wire and stays stationary, hence why it is called a "stator."

The rotor and stator do not make contact with each other whatsoever.

I am going to assume you know what magnets and electromagnets are, as well as what poles are and how opposites attract and like poles repel. You make the motor move by applying electrical pulses to the stator in a specific manner to attract and repel the magnetic poles on a motor in the way you want.

Regenerative braking relies on the fact that a changing magnetic field induces current in a coil of wire. It is just like how any generator works. As a rotating machine by itself, it can change roles (motor vs. generator) anytime ... It is up to the motor drive electronics (motor).

Like others may have mentioned, wear and tear of the motor comes from heat (hence the coolant going into the motor, gearbox, and inverter), mechanical stresses (torque), and friction (hence the lubrication).

If you have about an hour, look at this video from Weber State University in Utah where Professor Kelly shows the motor taken apart and points out the various features:

 

[roamtheworld]

Whether the motor is being used to drive the wheels or used to generate electrons, it’s spinning. There aren’t many wear parts besides gears in the electric motors. Heat is an electric motor’s worst enemy. Electric motor Mean Time Between Failures is measured in tens of thousands of hours.

It's what he said, HEAT is the issue with EVs, the motors can be cooled, but with humanoid robots, its a bigger issue since you can't easily cool the motors. Lots of discussion on robots, very little with EVs

 

[Teslaeata]

In general, the motor assembly consists of:

1. Rotor - Contains an arrangement of permanent magnets and ... well ... rotates.
2. Stator - Contains an arrangement of coils of wire and stays stationary, hence why it is called a "stator."

The rotor and stator do not make contact with each other whatsoever.

I am going to assume you know what magnets and electromagnets are, as well as what poles are and how opposites attract and like poles repel. You make the motor move by applying electrical pulses to the stator in a specific manner to attract and repel the magnetic poles on a motor in the way you want.

Regenerative braking relies on the fact that a changing magnetic field induces current in a coil of wire. It is just like how any generator works. As a rotating machine by itself, it can change roles (motor vs. generator) anytime ... It is up to the motor drive electronics (motor).

Like others may have mentioned, wear and tear of the motor comes from heat (hence the coolant going into the motor, gearbox, and inverter), mechanical stresses (torque), and friction (hence the lubrication).

If you have about an hour, look at this video from Weber State University in Utah where Professor Kelly shows the motor taken apart and points out the various features:

What do you think the rotor spins on? Fresh air? Levitation? Some sort of AI bollocks? The electromagnetic parts probably won’t wear but there are bearing surfaces which can wear mechanically.

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