Timeline for Did Volkswagen, Chrysler and/or GM cut diesel tailpipe emissions by ~99% over a decade?
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 24, 2014 at 8:50 | answer | added | RedGrittyBrick | timeline score: 8 | |
| Sep 24, 2014 at 8:43 | comment | added | RedGrittyBrick | @user1873: Do you have a reference for where GM, Chrysler or VW actually say that? It may just be a lazy and inaccurate reporter accidentally generalizing a more specific (and credible) claim.. | |
| Sep 24, 2014 at 6:24 | history | tweeted | twitter.com/#!/StackSkeptic/status/514661703662190593 | ||
| Sep 24, 2014 at 6:11 | comment | added | Henry | The claim is presumably about particulates and possibly NOx and CO. It is unlikely to be about CO2 or H2O, and would obviously not be true if you believe it is. | |
| Sep 24, 2014 at 2:38 | comment | added | user1873 | So, you are contending that when GM/Chrysler/Volkswagen say that they cut emissions by about 99%, they are stating that they converted 99% of the fuel they were burning to energy? If not, where else would the emissions go if not out the tailpipe? Even fuel-cells have emissions by that definition. | |
| Sep 24, 2014 at 1:31 | comment | added | Flimzy | @user1873: If it is emitted from the tailpipe, it is tailpipe emissions, by definition. | |
| Sep 24, 2014 at 1:20 | comment | added | user1873 | Which is why those diesel engines are also required to be equipped with catalytic converters, which convert carbon monoxide to carbon dioxide and unburnt hydrocarbons to water and CO2. I doubt most people consider water and CO2 emissions. | |
| Sep 24, 2014 at 1:08 | comment | added | Flimzy | @user1873: "Diesel particulate emissions" is quite separate from "tailpipe emissions" -- thus my question. If the article is (implicitly) only about particulate emissions, that's quite a separate claim than the one it actually makes. | |
| Sep 24, 2014 at 1:02 | comment | added | user1873 | Probably since they were required to by regulation, I don't doubt they did. "In the U.S., all on-road light, medium and heavy-duty vehicles powered by diesel and built after 1 January 2007, must meet diesel particulate emission limits that means they effectively have to be equipped with a 2-Way catalytic converter and a diesel particulate filter." | |
| Sep 24, 2014 at 0:09 | history | asked | Flimzy | CC BY-SA 3.0 |