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In case you ever wanted to know how a hydrogen fuel cell works, here you go...

https://youtu.be/0JC72KL4om0

 

@stevesnj

https://youtu.be/rTawvzH0MQ4

 

Interesting. Except for the part about you can't light a match around a hydrogen car, that's just false. I still believe that BEV architecture is the middleman to Hydrogen cars. But I think Toyota may go to fuel cell not piston. Still need lubricating crankcase oil and other typical ICE components. But hey never know what they are gonna do. They always sneak up on us with something different.

 

Lucid motors and inverters are probably better than Tesla has to offer. They even supply their motors to Formula E racing series. Here's how they do it...

https://youtu.be/fKhxxKCPwzc

 

I think they meant that was people's perception of hydrogen vehicles , not necessarily that it is the case

 

https://www.stamfordadvocate.com/news/article/new-haven-nicoll-street-crash-18114425.php

 

whats with your traffic accident fetish?

 

I know right.

 

That was a pretty gnarly crash right there. Single vehicle cras into nine vehicles and seven of them were parked, and the driver of the vehicle who initiated the crash died, it's not like it was a stolen Hyundai/Kia driven by some kids fleeing from the police. I like to stay up to date with Tesla vehicle crashes, the NTSB is placing a lot of focus on Tesla crashes. How else are you going to find out if self driving was a cause, or some other potential equipment failuer was the cause? I like to follow up, as there are plenty of Tesla crashes that are the result of driver error, and the car can be rueld out as the cause of the crash. There are plenty of Tesla crashes that cause substantial damage, and result in fatalities.

News outlets report on the crashes, if they did not. I wouldn't be made aware of them.

 

My personal opinion is that hydrogen is a plant by the oil industry to prevent bev adoption and doesn't make sense except in rare situations.

Hydrogen heavily comes from natural gas or electrolysis so back to the oil companies or we need much much much more electricity than bev

It's efficiency is terrible if used like gas (to explode) and if in a chemical reaction the car needs a ton of rare and precious metal.
The filling infrastructure (holistic infrastructure) is non existent and serves only vehicles, unlike bev where it leverages and existing infrastructure and the expansion of the infrastructure benifits vehicles, industry, and residential.
It's more dangerous than bev
It has less room for advancement
The range will almost always be worse than bev

Again, I think hydrogen is just a plant by the oil companies/right wing and is mostly used to keep the middle from going bev because "just wait a bit, there is something better coming"

 

Hydrogen at the moment is expensive to produce. Though more green hydrogen generation facilities are being constructed and more industries are utilizing hydrogen fuel cells like rail, airplanes. Walmart will be switching to green hydrogen for their warehouse and forklift fleet. It's scattered but will be a while until fruition.

 

What is "green" hydrogen generation? Not much in the way of biomass generation from what I have seen

I'm not saying there isn't a use case, but I find it very hard to believe it offers any benifits over bev

 

They use a solar wind hydro combo or just solar or just wind or hydro small processing plants to produce the hydrogen No connection to electrical grid or fossil fuel generators. Walmart is using that now.

SImplified diagram...but pretty much it.

 

Sure, but you could just put that power into a battery and avoid all the losses, conversely you could power a lot more with the same equipment (or have smaller equipment). Electrolysis of water to make hydrogen to then make an electric motor spin just uses MUCH more electricity to achieve the same end

 

I dunno. Fuel cells have been around a long time. I’m sure they’re very efficient.

 

Round trip though, you cannot come close to just putting the juice in a battery.

In hydrogen you have to make electricity, pass it to the electrolysis equipment, make hydrogen, compress the hydrogen to VERY high pressure (a big mechanical pump), put it in a tank, take it out of a tank, pass to at best a fuel cell (bet Walmart is using ice engines, not fc), then spin the electric motor. At minimum the compressor will have a ton of losses and the FC will have some as well, if it's an ice motor it's at best 30% efficient.

Alternately in a bev you make electricity, send the current to an inverter, put it in the battery, send it back to an inverter, spin the electric motor. Iirc ahead of the generator and behind the electric motor this is about 90%+ efficient.

Total round trip efficiency is what matters and hydrogen sucks here. Too much lost in generating hydrogen from electrolysis, to much lost in compressing it, and then more lost in converting it to motion.

My guess is Walmart is only doing it so they can keep their ice engines and run them on hydrogen instead of propane.

 

He is just a little ray of sunshine isn't he. /S I blocked him and my life is better because of that. But, I have a related experience. Here's the TLDR - Tesla full self driving handles flats just fine.

So, I'm on a road trip in my Tesla and I decided to pay the $200 for one month of the full self driving package. FSD without the beta features is OK, it changes lanes around slower moving traffic, but I'm not sure it's worth even $200/month. Anyway I'm driving along at 75+ mph in rural Nebraska with FSD engaged and I see what looks like a piece of trash blowing in the wind in my lane. I didn't disengage FSD because I thought I was going to miss it. However, it snagged the driver's front inside sidewall. It put a 1.5 inch gash in the sidewall and the tire instantly went flat. FSD was totally unfazed by the sudden lack of air in the tire, while at the same time the display screen was flashing warnings about no tire pressure. I took over control and pulled the car to the side. I've never had a flat at 75+ mph so there is nothing to compare it to. But I never once felt like there was any danger of losing control.

I called a tow truck and a local Farmers CoOp had a replacement in stock. Teslas in rural Nebraska are as common as cows in New York City. Which is to say no one at the tire shop had ever been that close to one. But, a tire is a tire and they had us back on the road in no time at all.

 

The GF re-upped her subscription for full self-driving beta (or whatever it's called), and used it on the drive home yesterday from SF (over the Bay Bridge and through Oakland). I was in the passenger seat. It nearly put us into other cars multiple times by trying to make stupid lane changes. I had her turn it off by the time we made it to 580.

 

I wasn't made aware of this one until now.
https://www.ledger-enquirer.com/news/local/article275663456.html

Tesla vehicles seem to me the ones NHTSA are most interested in.

Edit Lat week in Teaneck NJ

https://dailyvoice.com/new-jersey/t...ized-after-tesla-rear-ends-dump-truck-photos/

How does an intelligent vehicle like a Tesla rear end a dump truck?

This one is interesting, Sheriff's wife crashes Tesla into house DUI
https://www.sacbee.com/news/california/article275636446.html