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> And no manufacturer has been able to achieve the technology to meet that level. Urea-injection seems to work (that's what Mercedes does). But it requires ano
by avidiax 3y ago
> And no manufacturer has been able to achieve the technology to meet that level.
Urea-injection seems to work (that's what Mercedes does). But it requires another tank and special equipment.
And VW could meet the emissions requirements. That was the cheat. When they detected that they were being tested, they tuned the engine to meet emissions requirements. During normal use, the engine would make better power or efficiency but higher emissions.
- ToucanLoucan 3y agoIt is wild to me that OEM's can straight up include tech to defeat emissions testing and be allowed to continue building engines after that is found. Like, all regulators should operate from the assumption that the entities they're regulating are working in good faith: but once it's been demonstrated they are not, how can you ever trust a product they produce again? They and every other company found to be doing this should be barred from producing engines for good. Or at the very fucking least, be subject to an INCREDIBLE level of scrutiny regarding their software for a solid many years to follow. Like, every single line audited for compliance.
- treyd 3y agoYet another reason the software running on these automotive systems should be free and open source. It would be great to see the control logic and know that it's doing the right thing.
- spacecadet 3y agoThis right here. The hardware and software should be open to public scrutiny, so that experienced practitioners can explore and weigh in.
- TheLoafOfBread 3y agoI hope that you like ARXML mess with hundreds of MATLAB Simulink files sitting on top.
- spacecadet 3y agoI do. See my other post...
- Cockbrand 3y agoWell, German politicians for one sure love their automotive industry, and it's traditionally more important to them than mostly everything else.
- mh- 3y agoI believe it needed the efficiency gains to meet MPG (L/100km) requirements. So it really couldn't meet both. At least not at the same time.
- anticensor 3y agoIt can meet the fuel consumption requirements, but then it would lose at marketing due to the derating required.
- jmvoodoo 3y agoI owned a Dodge ram diesel model that had one of these engines. It had urea injection, and I had to maintain the 2nd tank.
- Terr_ 3y ago> I had to maintain the 2nd tank "Hold up, I need to get a large soda--the urea tank is getting low."
- Gibbon1 3y agoRandom idea. Change emissions requirements based on GPS coordinates. That's sort of what they do in shipping. Ships burn cleaner fuel in port. If a semi is driving around Los Angeles low emissions are important. In middle of Kansas not as much. That said phasing out diesels is better idea over the medium run.
- Scoundreller 3y agoThat kinda happens as vehicles that can’t pass emissions get exported to states/areas that don’t have the testing.