willow_hiller
Well-Known Member
Munro & Associates video on the total cost of removing the ultrasonic sensors:
Ballpark $100 - $150 saved per vehicle.
Ballpark $100 - $150 saved per vehicle.
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Investor Engineering Discussions
- Thread starter MC3OZ
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Yeah, I didn't properly account for the high mass in my mental image.
If an 82k pound semi uses 1.8kWh/mile at 60 MPH then it needs regen if slope is > 1.8kWh/mile.
A 0.011 mile altitude change is 1.8 kWh and is a grade of 1.1%
Even if battery-motor regen round trip is 70% (seems low), overall is better.
5% grade:
(1.1%x100%+3.9%*70%)/5%=77%
Correct. I think 70% is the usually accepted number for regen efficiency. That’s pretty high considering you have road and mechanical friction losses, air speed losses, battery heating losses and generator losses.
Yeah, but some of those losses (road, drivetrain and air speed) shouldn't count because they would be incurred by the vehicle movement anyway. Incremental inefficiency from battery to motion due to increaed load of altitude gain and inefficiency of motive to battery conversion are the round trip loss factors.
Does Tesla still use USS ECUs? I tried finding such a best on the parts site and failed. Wondered if it was integrated.
Bet TSLA
Active Member
$114 per vehicle in raw parts cost to Tesla. That includes none of the knock-on effects. At four and a half minutes into the video.
JRP3
Hyperactive Member
The front and rear subframes will use the castings, just like the Y.
Needs to be huge due to dimensional requirements of a truck frame. Cross sectional area of casting * injection pressure = required clamping force.
Load handling of the casting is more impacted by the height of the part which impacts the volume of the casting, but not the clamping force needed.
Interior (non exterior surface) structural frame?
willow_hiller
Well-Known Member
Looks like the USS were removed from the assembly lines very shortly after the announcement. First deliveries of cars without them are happening now:
EDIT: In fact it appears there are some camera changes for the USS-less vehicles:
EDIT: In fact it appears there are some camera changes for the USS-less vehicles:
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navguy12
Active Member
I drive a “legacy build” (a.k.a low VIN) TM3; I hope that if/if some future software update takes away my USS and close quarters are measured with vision only, that the vision only system is run in “shadow mode” for a few months to make sure the vision only solution is a viable solution for close distance clearances.
That is how it *was* designed as the data coming off of them was interpreted/processed by licenced proprietary embedded code from the manufacturer. Remember, gotta pay the license fee! Then the data comes into the AP/FSD ECU where it can be further processed, heuristics applied, actioned and visualized. Data was super noisy back in the day (2014).
Again, I hope Tesla says how much per car this saves them.
willow_hiller
Well-Known Member
I think there's a possibility that there are relatively significant camera upgrades on the new 2023 model year vehicles. Maybe not HW4, but significant enough to warrant retraining features like Autopark.
If you think about it, Autopark has been vision-only since August 2021. So why is Autopark one of the features that's removed from new vehicles without USS? Now that we've seen the repeater cameras appear to have a wider angle, I think it's possible that more cameras have also been changed in such a way that Tesla now needs to either retrain or reconfigure a feature like Autopark.
If you think about it, Autopark has been vision-only since August 2021. So why is Autopark one of the features that's removed from new vehicles without USS? Now that we've seen the repeater cameras appear to have a wider angle, I think it's possible that more cameras have also been changed in such a way that Tesla now needs to either retrain or reconfigure a feature like Autopark.
Query:
Did they remove USS from Autopark in 2021 or just add vision to it (using both)?
willow_hiller
Well-Known Member
I believe it's vision-only. Some discussion of it including a tweet from Green here: First look at Tesla's new vision-based Autopark feature
And then this additional tweet:
Yeah, I googled those too but they didn't clarify the removal of USS (per my understanding).
10 Jun 2022 - “The components to be supplied this time will be Samsung’s version 4.0 camera modules with 5 million pixels, which show five times clearer images…Over the next few years, Samsung will be supplying its latest camera modules to be installed on Tesla’s Model 3 sedan, Model S sedan, Model X SUV and Model Y crossover as well as electric trucks such as the Cybertruck and the Tesla Semi, the sources said”
Tesla secures multibillion-dollar deal with Samsung for new cameras for self-driving
Tesla has reportedly secured a multibillion-dollar deal with Samsung to get new cameras for its self-driving sensor suite. Tesla’s Full...
electrek.co
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Bet TSLA
Active Member
So presumably this increases parts cost for the camera modules? Offsetting what's saved by eliminating the USS?10 Jun 2022 - “The components to be supplied this time will be Samsung’s version 4.0 camera modules with 5 million pixels, which show five times clearer images…Over the next few years, Samsung will be supplying its latest camera modules to be installed on Tesla’s Model 3 sedan, Model S sedan, Model X SUV and Model Y crossover as well as electric trucks such as the Cybertruck and the Tesla Semi, the sources said”
Tesla secures multibillion-dollar deal with Samsung for new cameras for self-driving
Tesla has reportedly secured a multibillion-dollar deal with Samsung to get new cameras for its self-driving sensor suite. Tesla’s Full...
Presumably. But with how ccd cameras have been improving, it might not be much of an increase.
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