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Normal Operating Sounds

tesla.com

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Re: Normal Operating Sounds

#231

Post by gambiting »

rootusrootus wrote: post #208
rainbowzootsuit wrote: post #197

Earlier quoted context omitted.

There have existed "turbo timers" that keep the engine running for a short time after the key is off to help avoid this. Not sure if that works with modern cars as easily.

Modern turbo designs (most anything in the last 25 years, at least) use water cooled turbos and convection keeps the water flowing after the engine is turned off. This is why we don't use turbo timers any more.

And also even back then it affected almost no one, there were loads of tests done on this by automotive magazines of the era and found out that usually the last 1-2 minutes of gentle driving to your driveway/garage is more than enough to cool down the turbo properly, the only people affected were those who due to either aggressive driving or circumstances of their location would drive at high rpm, stop, then immediately shut down their engines.

Re: Normal Operating Sounds

#232

Post by Rebelgecko »

josephcsible wrote: post #71
Rebelgecko wrote: post #56

Earlier quoted context omitted.

Actual heating systems can be better than 100% efficient, while crypto mining or cinebench or whatever is <100%

How can anything be <100% if producing heat is the goal? Where would the rest of the energy be going?

I think you lose some to RF, photons (with a monitor), sound waves, etc. Some of those losses can be reabsorbed and turned into heat, but some stray photons and radio waves will go out the window, never to return.

The majority does go to heat but you'll never hit the 100% threshold like other methods of heating can meet (or exceed)

Re: Normal Operating Sounds

#233

Post by water-your-self »

smeej wrote: post #229

I think I would happily pay money for an archive of high-quality recordings of what various problems sound like, in a variety of cars. It would really be nice not to have to go in and try to imitate the sound to my mechanic, and it would help give me an idea what the repair ought to cost. I've spent thousands of dollars on misdiagnosed (or misrepresented) "repairs," and it would be great to get a diagnosis from the m…

I have fond memories of car talk on NPR.

Re: Normal Operating Sounds

#234

Post by londons_explore »

janoc wrote: post #181
londons_explore wrote: post #143

If I was the engineering team, I would be trying to eliminate all these noises. Every single one of these could be engineered away. For example the pops and bangs at a supercharger is the metal shield deforming when heated. Instead, it should have circular ridges stamped into it around the fixing points to let it expand against the springiness of the steel. The clunk noise from brakes could be engineered away by usin…

It is a matter of priorities. If that was a high priced Bentley where the customer doesn't expect anything but the best for their money, sure, go ahead. But for a Model 3 where you need to carefully manage costs or you will either price yourself out of the market (and Tesla is already at the high end of it!) or go bankrupt I think you will have much bigger fish to fry than dealing with such noises. You also obviously…

> having the high voltage always on is not possible/allowed.

I am aware of no law requiring that...

Plenty of other high voltage things are always on - for example the outlets in your living room are always live even if you aren't using the room.

The electrical danger of your house would be reduced by turning them off when you weren't in the room, but we decided it wasn't worth the complexity/cost to do so for the tiny benefit.

Electrical contractors in cars are in the same position IMO. It should be energised once in the factory, and then remain energised for the life of the car. Car service garages can have tools to de-energise and re-energise the HV system if necessary - rather like such tools exist to gas and degas aircon systems.

Re: Normal Operating Sounds

#235

Post by twisteriffic »

rootusrootus wrote: post #210
c0nsumer wrote: post #194

Earlier quoted context omitted.

Because it was designed with Toyota I don't know if the BRZ does it, but a number of other Subarus will kick on an recovery pump ~6 hours after ignition. It sounds sort of like a small/quiet compressor. Before I looked up what it was, I kept hearing a gentle noise coming from the garage in the late evening. Figured it was noise from outside... Then one day I was out there and heard it start, realized it was the car,…

That is the evap leak testing pump. It pressurizes the tank briefly to test the effectiveness of the cap.

This confused the hell out of me the first time I heard it. Taking the garbage out in the middle of the night and hear whirring coming from under a vehicle that hasn't moved in hours.

Re: Normal Operating Sounds

#236

Post by smt88 »

gregoriol wrote: post #110
smt88 wrote: post #33

Earlier quoted context omitted.

Is this universal? I've driven the Rav4 Prime and Ioniq 5 extensively and neither made weird sounds.

It would highly depend on the brand and model: one would expect Rolls-Royce EVs or even some like Lexus not to make any annoying noises.

Wouldn't one also expect that of Teslas, which are as expensive or more expensive than EVs made by legacy luxury brands like Lexus?

Re: Normal Operating Sounds

#237

Post by graphe »

smeej wrote: post #229

I think I would happily pay money for an archive of high-quality recordings of what various problems sound like, in a variety of cars. It would really be nice not to have to go in and try to imitate the sound to my mechanic, and it would help give me an idea what the repair ought to cost. I've spent thousands of dollars on misdiagnosed (or misrepresented) "repairs," and it would be great to get a diagnosis from the m…

https://youtu.be/RKT-sKtR970 Check out this engine sound simulator. Perhaps a preconfiguration of this?

Re: Normal Operating Sounds

#238

Post by jakebasile »

wildrhythms wrote: post #169
orangepurple wrote: post #18

Loading this page causes the tab to crash with SIGTRAP on Chromium 119.0.6045.159 Linux

Same, it immediately crashes upon loading. On Windows with Chrome 119.0.6045.160 [Edit] Figured out Dark Reader extension is causing the crash. I turned it off for that specific site and it no longer crashes. Very strange.

Same here. I've had other weird interactions with Dark Reader before - one was where minecraft.net refused to let me log in until I turned off Dark Reader.

Re: Normal Operating Sounds

#239

Post by thirtyseven »

rootusrootus wrote: post #222
anskia wrote: post #127

background: I had a model 3 for a couple of years and now have a Y ( no longer have the 3). The 3s are insanely quiet. The Y is ok but has a whistle at certain cruising speeds (90-100km/h). But when they are supercharging they are both ridiculously loud. Like having AC on full bore. Also starting a charge makes the most bangs and pops, regardless of the charger type. I just finished a 2000km drive and slept in the ba…

I think maybe you just got lucky. My first Model 3 was sort of quiet (just wind noise, Model 3s and Ys are quite loud compared to other similar cars). My current model 3 (a 2023 model) has a whistle at highway speeds that I haven't been able to isolate. Along with a fluttering sound, which may be related, and sounds like it's coming from the passenger side mirror area. The next Model 3 ("Highland") uses laminated gla…

I've seen a Model 3 with very similar sounds coming from the passenger side mirror. There was a loose piece sticking out of the bottom, pushing it back in fixed it.

Re: Normal Operating Sounds

#240

Post by andirk »

yreg wrote: post #200
andirk wrote: post #37

Earlier quoted context omitted.

I don't get it. OK there are sounds to let you know the car is falling apart constantly, but this one is ambient sound of people encouraging you to accelerate??

It's a joke. That clip is supposed to be your passengers.

I still don't understand. Is that a feature of the vehicle or not? Is this an April Fool's joke or is there a setting that cheers on the driver while accelerating? I see some individuals took insult to my question. Some of the sounds are pings and pops and knocks to mimic a combustable engine. What is this sound for?
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