Elon Musk reveals how Tesla Semi achieves its insane efficiency
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- Опубликовано: 20 сен 2024
- Elon Musk reveals how Tesla Semi achieves its insane efficiency
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#elonmusk #tesla #semi #diesel #efficiency #range #evnews
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I’m a truck driver, and if it means I can make more $, I want one of these . Even if it means I make the same, I still want one because the EV doesn’t shake as violently as a diesel. They shake rattle and roll like crazy !!! I like quiet and smooth !!!
There is a huge amount of kinetic energy in a loaded semi on a sloped road.
Tesla probably won’t sell to individual customers for a few years. The big dogs can buy hundreds and have the resources to build their own infrastructure to run the fleet.
Life expectancy of the semi-truck is well over 750,000 km’s, the drive train needs to be upgraded with injectors, in frame overhauls and other diesel related components. The semi structure is so robust that many of these vehicles have over 4 million miles on them though mechanical components have been replaced numerous times.
There is a rail route in north Africa that uses no energy because it climbs the mountain to the mine empty but comes down fully loaded and uses regenerated braking and fully charges the battery for the trip back up.
That's insane. Actually using the potential energy of the cargo to power the vehicle.
Go on then, name it
only example I know of getting clean energy from coal, that is until they burn it.
Most ICE trucks have retarders. They tend to waste the energy they absorb but they have the same safety impact as the regen on an electric motor.
The energy recovery and reuse is the real benefit of the EV drivetrain.
Well... It obviously does not work all the time, otherwise, there wouldn't be emergency ramps built at the bottom of any sizable downhill stretch of highway, and before any tighter curve!!!
Emergency ramps are frequently used 8:25 for petrol/diesel vehicles which rely on friction brakes which fail due to overheating . Please explain how that proves that the coming electric vehicles are no good when they will feature the safety of regenerative breaking.... no friction heating. Do you work for the ice team or petrol/diesel team using bullshit posts or just didn't think your comments thru. Be honest now.
@@st-ex8506not so many emergency ramps in Europe but you have plenty in US because you have purely made trucks that use ancient technology.
Do not forget the cost of oil change in a disel truck... again and again and agsin
The @Tesla Engineering team very wisely chose the Pike Peak route to demonstrate the Tesla Semi for both of the reasons you hit on:
1. Torque - That enabled the video to show the Tesla Semi passing traditional diesel trucks (one with a Walmart logo) like they an old man, and
2. Regen capturing and storing the energy on the downhill portion of the route this demonstrating significantly better efficiency.
When you've got a product that good, there is no need for marketing if you know how to show it's best features and have the customer sing it's praises.
To recover going downhill 80% of the energy generated going uphill seems exaggerated. It is more like 70%, which is already awesome! Well... I obviously don't know that for the Semi, but I have done the test in my Model 3. I am Swiss, and drive in the mountains more often than not. I have noted the energy it took me to cross an (pretty high) alpine pass. Then I figured how much energy would have been used driving the same distance on flat land at the same average speed. And the difference is 30% of mph, not "miles per hour," but mass * the gravity constant g * the height of the pass, i.e. the potential energy that had to be invested to "lift" the car and its load to the top of the pass. It is remarkably efficient! The energy spent fighting aerodynamic and rolling forces is obviously not recuperated!
The result is for a Model 3 with 2 passengers and baggage aboard, going up a 1000 meter high (measured from the base of the pass) pass is equivalent to driving only around a 15 km long additional distance on flat land! So, in the case of this 1000 m pass, with say 5% gradient on either side, it comes to driving 55 km instead of the 40 km registered on the odometer. In the case of an ICE car, it would be more than double!
Conclusion: the Semi will perform very well in mountainous terrain! And, if the 80% efficiency number is true, even better!
The claim is 80% of the energy used in getting up the hill - so I expect that means the geopotential energy only, the product of mass, ascent height and gravity - ignoring the other terms involved in overcoming rolling resistance (going uphill and down). On that basis, it's quite credible.
Am I the only one to notice that because of the driving position in the Tesla semi you don’t need LHD and RHD versions or am I wrong ??
I noticed that too.
Central driving position is a stupid idea.
I noticed that but it only has a door on one side. That might be a problem to some regulators but it really shouldn’t be.🤷♂️😊
@@stefanrus4723 Why?
Battery capacity is measured at 1C. In semi case it is used at 7-8C when old batteies have higher internal resistance then having LFP battey tabless then internal resistance is lower and also when you have lower current then internal resistance makes less work and generates less heat so going up hill needs more current so it is less efficient. While at 1C battery is 175wh/kg then at 8C it may be 185 or more. As i calculated when you have long range truck then you never get more than 4C but shoter range moddel you may get 2c upphill and downhill so it is less efficient
Faulty statement re engine breaking!
A) Old fashioned mechanical fuel injection: A diesel engine cuts all fuel injection at each and every instant the speed of the vehicle exceeds the desired speed (regulator weights in the fuel pump spinning faster than the accelerator pedal “orders” (in cooperation with the compression springs pushing the centrifugal weights in) hence pulling back the fuel regulator rod killing the fuel delivery to zero)
B) Modern electronically governed fuel injection: Sama as above but with electronic position and speed pick-ups.
Kindly
Anders
Sweden
well i ask the question do you have any contacts in the heavy vehicle industry that can confirm that linfox actually has a order for 50 of the semi's from tesla but have issues with the ADR cert to get them imported
Well this is going to have a lot of regen going across the big flat runs on a lot of Australian roads....... like 0 regen across the Nullarbor
Mountain roads are littered with Runaway Track Ramps, which show the potential energy available.
en.wikipedia.org/wiki/Runaway_truck_ramp
Thanks
Welcome
in theory if motors are 90% efficient then the round trip return should be .9 x.9 or .81 which is what EV says..
However some tesla motors are supposed to be 95 percent so there are either other losses (in and out of battery)
of the semi motors aren't at 95%. Any idea what's going on.... I believe gravitational storage is 100% efficient.
No oil change, that will also be a huge cost savings.
Far less brake dust.
How toxic is brake dust compared to other forms of vehicular pollution?
The heavier the vehicle the more benefits of regen braking.
agreed
My view is that Tesla must build a giga factory in China for the Semi 🚛❤❤❤❤❤
So that it can't be imported into the US?
I think that the semi will be eventually a disruptive player in trucking
We can expect the same with the robo taxi
Ever think of an electric semi carrying a load of petrol?
It can haul most loads but the more common they become the less likely it is that they will be asked to.🤷♂️
It's the trailer that does the carrying..😂
🤫 IT’s a secret ,SAM 🔋🔋🔋
So one of the most interesting video’s on Tesla semi is this 42 min clip of jay leno’s garage:
ruclips.net/video/LMKySYs-hCg/видео.htmlsi=7TKJD6YRefIzezS-
Trevor Milton still didnt serve even a day of his sentence and he is living like a king because all his friends and family who got rich with investor money arent obligated to return any of it.
With so much efficiency it begs thecquestion why not every EV has dual or triple motor support for added tegen to also improve range in all EVs small and large. And why full regen is not standard on all EVs by default? And then the second question why higher energy density is reserved for bigger EVs only? Why this marketing differentiation. Wouldn't it be more cost effective to upgrade all EVs to a higher capacity. Even keeping smaller EVs at smaller capscity with higher capacity per cel, would allow for smaller battery packs that take less floor space and allow for lighter and much more ergonomic EV designs. Right now this advanced engineering differentiation to me sounds more profit driven and not adress the fact that most EVs are still relatively expensive.
Once EV's are out of there beta testing stage, which they are still in with technology, they will become cheap, as the marginal cost to produce them come down over time.
What happens when the battery is full going downhill!
you shouldn't top off the battery if the charger is at the top of a mountain...
Then, the region braking feature would indeed not work. But, unless you had the weird idea to charge the battery full at the very top of the hill, that will NEVER happen!
Normaly you cant charge that high that you have absolutly no regen but i was not amused at 100% charge caresharer going downhill whit half the regen power than normal
Locomotives use bleed resistors to convert electrical energy into heat. Semi could do the same.
@@stefanpredl6849 i hope no one builds chargers at the top of big hills, unless then can program them
to limit the top charge level
Imagine what 80% regen efficiency could do for autonomous rail cars!
In my country, Switzerland, where 100% of our extensive rail network is electrified, it is has already been the case for decades! The trains put back on their electric network, going downhill part of the electricity they used going uphill.
😢😢😢😢
The biggest fail in the automotive industry since the Cybertruck
Why does it have 3 motors? Seems very complicated
Because that’s how many it needs. It’s much simpler than a diesel, that’s guaranteed.
there was a recen tesla semi fire that took 50,000 gallons of water to put out
watter tp put out lithium fire. lithium self comusts due to humidity in air and metallic lithium jumps out of the watter because of instant blast when thrown into watter. Are those firemakers a bit ill educated
@@qkktechI think you are.
Think about al that toxic water draining into the ground and all the toxic gas spread into the atmosphere into dose 16 hours needed to put the fire down.
@@qkktech Now, let's try that in English.
Every truk next tesla seems outdate. 😂
Wrong!
The Tesla Semi isnt efficent at all!
🐒🧠
65% of trucks travel 200,000km - 300,000km per year. So the life of the EV truck will be much less
Why? If the average is 750k for most semi’s and Tesla expect 750k to 1M? In miles, so km more like 1.6M km.
The 2 choices for President of the USA are both ATROCIOUS
Please explain. It’s pointless making empty statements without facts to back them up
Trump is a ball buster to evil . He is gunna get em. And if he doesn’t, his successor will.
I think that you might be commenting on the wrong video.
Elon is very clever, but since he has endorsed Trump lots of people will not be buying a Tesla.
If you chose to punish Elon by not buying a Tesla instead of just holding your breath like a normal kid, you probably wouldn’t appreciate a Tesla anyway.
@@ElMistroFerozmy Tesla is fine as is my breathing. Family and colleagues NOW won’t consider a Tesla. Just stating facts.
Yep, I'm one of them. I was planning to buy a model Y, but there are plenty of other decent EVs here that I can buy without me contributing to Musk's $45 million per month donation to the orange scrotum.
🤣A bit late for that , I reckon
I'm sure he will survive. Think of all the NEW customers he will have.
Elon is the greatest! After he endorsed Trump, many people now want to buy a Tesla.
liberals less so, but rednecks moreso. Hopefully the qualities of the EV last beyond the political cycle. But the country people may wait till there are more charges on the less traveled rural highways, unless the go solar and stay local
Me.
Wrong,Tesla Sales are going down fast!
That endorsement is sad
Elom Musk is rich but crazy. His companies are going downhill for endorsing Trump.
It could be disruptive, but they need to make a LOT more of them, especially now that Elon is doing everything he can to ruin the brand for car buyers