this post was submitted on 21 Nov 2024
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According to records filed in the case, Achtemeier conspired with mechanics in garages and operators of truck fleets to disable the anti-pollution software installed on diesel trucks.

Coconspirators who wanted to disable their trucks’ pollution control hardware system—a process commonly known as “deleting”—sought Achtemeier’s help to trick the truck’s software into believing the emissions control systems were still functional, a process known as “tuning.”

Monitoring software on a deleted truck will detect that the pollution control hardware is not functioning and will prevent the truck from running. Achtemeier disabled the monitoring software on his client’s trucks by connecting to laptops he had provided to various coconspirators. Some of the coconspirators would pass the laptop on to others seeking to have the anti-pollution software disabled on their trucks. Once the laptop was hooked up to the truck’s onboard computer, Achtemeier could access it from his computer and tune the software designed to slow the truck if the pollution control device was missing or malfunctioning. Achtemeier could “tune” trucks remotely, which enabled him to maximize his environmental impact and personal profit.

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[–] skillissuer@discuss.tchncs.de 7 points 16 hours ago (2 children)

or they could run on propane, which doesn't make a whole lot of particulates in the first place and is cheaper anyway

[–] Melatonin@lemmy.dbzer0.com 10 points 16 hours ago (1 children)

I'm talking big trucks not forklifts.

[–] skillissuer@discuss.tchncs.de 3 points 14 hours ago (2 children)

out there plenty of people run their cars on LPG, most of taxis in Warsaw are hybrids running on propane because it's cheapest fuel in most efficient vehicle in urban conditions

it's pretty common in US too, just not in private vehicles https://en.m.wikipedia.org/wiki/Autogas#/media/File:2020_Global_Autogas_Consumption.svg

[–] Melatonin@lemmy.dbzer0.com 1 points 4 hours ago (1 children)

I worked in the lumber business in the US for a while, and we didn't have access to LP fuel anywhere I knew of, and LP trucks for purchase were unheard of, and I can't imagine where I could even get one serviced. It's an LP desert where I am

Just my personal experience.

[–] skillissuer@discuss.tchncs.de 1 points 2 hours ago

I heard some of that is popular along southern border (AZ?)

[–] tal 1 points 14 hours ago

IIRC from /r/Europe discussion, propane is also not uncommon as a fuel in Turkey.

kagis

Yeah:

https://auto-gas.net/mediaroom/turkey-leads-autogas-consumption-in-europe/

Turkey leads Autogas consumption in Europe, while ranks second in the world. 80% of all LPG consumed throughout the country is used as Autogas. In addition, Turkey is the only country that has more LPG vehicles more than gasoline-powered vehicles.

In Turkey, the number of LPG vehicles in operation is close to 5 million.

[–] jqubed@lemmy.world 4 points 16 hours ago (2 children)

I’m assuming the engine would need some modification to run propane? If not to the cylinders themselves, to the fuel supply? I assume propane would be largely similar to LNG vehicles? I really only see that on city buses and assumed there was a range reason for that.

[–] hank_the_tank66@lemmy.world 6 points 14 hours ago (1 children)

Propane is way less energy dense per volume than diesel, so it isn't feasible for long-haul trucking. CNG/LNG is more energy dense than propane, but still nowhere near that of diesel fuel, which is why you see it in busses and garbage trucks. I know a few massive fleets (UPS comes to mind) that use CNG for some of their local routes, but that is probably more for the "green" optics than anything else.

[–] skillissuer@discuss.tchncs.de 2 points 14 hours ago* (last edited 14 hours ago)

propane is like 3/4 density of petrol and gram per gram carries more energy (propane 0.58g/ml, petrol 0.7ish g/ml) it's slightly greener because it contains more hydrogen so more energy per carbon emissions

LNG is cryogenic, has even lower density (0.41 to 0.5 g/ml depending on temperature) and CNG is less dense still depending on pressure

[–] skillissuer@discuss.tchncs.de 1 points 14 hours ago

petrol engines need little modification, what is def necessary is another tank for LPG. different fuel supply system is required, but if original is kept in place either petrol or LPG can be used as needed. propane is a liquid under pressure and much denser than gaseous compressed methane, and not cryogenic like LNG. diesel engines can also be converted, but it gets harder and requires either small amount of normal diesel used or installation of spark plugs (it's still diesel cycle)