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Old 01-17-2020, 03:52 PM   #81 (permalink)
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Old 01-17-2020, 04:08 PM   #82 (permalink)
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The links for 2nd and 3rd are wrong
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Old 01-17-2020, 04:54 PM   #83 (permalink)
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Quote:
Originally Posted by Gasoline Fumes View Post
Hopefully there will be aftermarket battery retrofits with more range for older EVs in a few years. Being able to change energy sources with no vehicle mods is a great EV benefit too. An EV charged by coal electricity can switch to renewable energy much easier than a gas/diesel vehicle!
But with companies locking down components that have to have an encrypted digital hand shake with other components or it will be seen as invalid... That makes it hard to just swap batteries.
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Old 01-17-2020, 06:23 PM   #84 (permalink)
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Fracked gas & diesel seems the most extremely harmful to the environment. I guess environmental consciousness and eco modding are not mutually exclusive.
“The best diesel will never match the best petrol engine for NOx, In a modern petrol engine, just enough air is mixed with the fuel to consume both air and fuel completely and the exhaust after-treatment consists of the well-established ‘three-way’ catalytic converter. Diesel engines are ‘lean-burn’ with excess air left in the cylinder after all the fuel is burned and the high temperature burns nitrogen in the air to generate NOx. Three-way catalysts do not work with any lean-burn engines. whether petrol or diesel. Lean-burn petrol engines have been tried in the past, but they produce just as much NOx as a diesel and need the same type of exhaust after-treatment.

Getting rid of NOx

The first step is to reduce the amount of NOx leaving the engine using minute control of high-pressure direct fuel injection, plus exhaust gas recirculation to cool combustion and reduce the amount of oxygen present in the cylinder. Then to meet the latest EU6 emissions, diesels need either a lean NOx trap (LNT) in the exhaust system or more complex and bulky selective catalytic reduction catalyst (SCR). With SCR, urea fluid held in a separate tank is injected into a catalytic converter to neutralise the higher levels of NOx.

Jones says LNTs are less efficient and can only scavenge about 60% of NOx from the exhaust. SCR is much more effective when fully warmed up with a percentage clean-up rate “in the high 90s”, he adds. For small cars using LNTs, a switch to SCR to satisfy RDE may pose a problem because the SCR system is more bulky and expensive. That may force manufacturers of A and B segment cars to stick with downsized petrol engines, but dropping small diesel engines will make it harder to meet their fleet CO2 average."

https://www.autocar.co.uk/car-news/i...-diesel-engine

Last edited by Galvatron1; 01-17-2020 at 06:32 PM..
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Old 01-17-2020, 07:24 PM   #85 (permalink)
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NOx would really only be hazardous in dense populations. The primary form produced from combustion is NO, and it has a half life of less than 2 hours. NO2 is the second most common form, it it readily breaks down from sunlight. The total average half life of NOx in daylight is 4 hours.

Maybe it's a good idea to not allow too many diesels in Tokyo, but for places like Montana it doesn't matter one bit.

So these urea systems exist in the off chance that you're driving an F-250 through Manhattan.
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Old 01-17-2020, 08:05 PM   #86 (permalink)
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Quote:
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1st and 3rd links appear to be incorrect.

Aw crud. You are correct. Poor copy pasta skills here.

I'm leaving them as is. You'll have to take my word that Oil pan's post was in the brake drag-reduction spring thread. Xist's was... I forget where... in a thread where Mirages were discussed at one point.

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Old 01-17-2020, 08:24 PM   #87 (permalink)
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Maybe it's a good idea to not allow too many diesels in Tokyo, but for places like Montana it doesn't matter one bit.
Sure matters here in NYC, with all the diesel spewing buses & trucks. As well as LA, Or any major city around the world. Especially places where motorbikes without catalytic converters are the main form of transportation & gas landscaping tools roam free, NOx can get high.
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Old 01-18-2020, 02:48 AM   #88 (permalink)
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Quote:
Originally Posted by Galvatron1 View Post
Sure matters here in NYC, with all the diesel spewing buses & trucks. As well as LA, Or any major city around the world. Especially places where motorbikes without catalytic converters are the main form of transportation & gas landscaping tools roam free, NOx can get high.
Well I did mention Manhattan.

Cities and counties should be free to set their own rules. A strict federal standard doesn't make sense though if 99% of the area of the US doesn't suffer from NOx emissions.

I'm all for the progression of technology bringing about a progression in clean environment, but some things are going too far; like urea injection in Montana.
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Old 01-18-2020, 10:56 PM   #89 (permalink)
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I won I won I won! :D

I sure wish that I knew what I wrote to win, but I will have a shiny new shirt to console me!

I would like to thank all of the little people, gnomes, goblins, house elves, midgets, Papa Smurf, and various children that may or may not be employed according to labor laws!
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Old 01-19-2020, 12:22 AM   #90 (permalink)
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Originally Posted by Xist View Post
I sure wish that I knew what I wrote to win, but I will have a shiny new shirt to console me!

I would like to thank all of the little people, gnomes, goblins, house elves, midgets, Papa Smurf, and various children that may or may not be employed according to labor laws!
Congrats Xist! I've got a shirt too. We could be twinsies! :P


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