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How They Did It: An Analysis of Emission Defeat Devices in Modern Automobiles

05/23/2017 5:39 PM

https://www.sciencedaily.com/releases/2017/05/170523081855.htm

For anyone interested in the details, this document describes how VW and Fiat defeated the emission tests...

https://cseweb.ucsd.edu/~klevchen/diesel-sp17.pdf

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#1

Re: How They Did It: An Analysis of Emission Defeat Devices in Modern Automobiles

05/23/2017 6:15 PM

Oh boy, hard coded to detect the vehicle is under test and alter the engine characteristics to fool the testers. You don't get much more of a smoking gun than this.

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#2

Re: How They Did It: An Analysis of Emission Defeat Devices in Modern Automobiles

05/23/2017 6:57 PM

The real kicker is the dismal performance and fuel milage drop many models saw for the fix.

Volkswagen drivers attack official mpg figures

VW diesel-owners need to expect lower highway mpg once fix is made.

10 - 30% drop in milage and performance is a pretty hard hit for a vehicle and something most peoples pocket books won't take. Especially those who bought said vehicle for their combined performance and good fuel mileage numbers.

BTW if the real world as driven GWP losses from the NOx reduction are given a fair weighting against the increase in CO2 production from burning more fuel to do less useful work the whole fix is a wash to outright scam that goes against what its supposed to be and stand for.

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#3
In reply to #2

Re: How They Did It: An Analysis of Emission Defeat Devices in Modern Automobiles

05/23/2017 8:41 PM

Agreed. Sometimes fixing one problem creates a much bigger one, Thomas Midgley Jr springs to mind as a famous example.

Oops

Best intentions and all, but still, oh boy.

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#8
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Re: How They Did It: An Analysis of Emission Defeat Devices in Modern Automobiles

05/23/2017 9:39 PM

"Bill Bryson remarked that Midgley possessed "an instinct for the regrettable that was almost uncanny." J. R. McNeill, an environmental historian, opined that Midgley "had more impact on the atmosphere than any other single organism in Earth's history."

Wow. Imagine being remembered for the sheer environmental damage his inventions had wrought. All that lead released into the atmosphere, especially in cities and those people breathing it day in and day out? Crikey. His (with GM's and DuPont's and Standard Oil/Exxon's backing) makes VW's crime look like a Sunday picnic. Not to mention CFCs and their impact; of course they didn't know about that at the time.

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#9
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Re: How They Did It: An Analysis of Emission Defeat Devices in Modern Automobiles

05/23/2017 11:37 PM

I agree on the lead but the CFC thing has as much shady questionable political and big business interest behind it as the GW/CC scam has.

At best it was the test run for seeing if the general public was gullible enough to fall for such a scientifically questionable BS story as climate change has proven itself to be.

There never was a hole formed in the ozone layer by CFC's and there never will be. What there is is a well defined and highly predictable seasonal thinning, followed by a full recovery a few months later, event that happens every year for a few months then just as quickly as it came it completely disappears again.

Plus interestingly enough as one pole sees the seasonal thinning event the other sees a seasonal spike of which no one ever talks about any of this despite NASA having studied and recorded the events since the first round of technology came to be that could detect ozone concentration the atmosphere back in the 1970's!

Interestingly enough the supposed hole wasn't found until around 1985 when the patents on CFC refrigerants were about to run out.

Ozone hole 'discovered' in 1984.

Freon patent expires. 1979 Ozone hole issue shortly follows

NASA full year Ozone animations.

Full Southern Hemisphere season cycle yearly animations.

Northern Hemisphere Ozone

It comes and goes every year (one pole goes up while the other goes down) since the first ozone mapping satellite systems went online and likely has been doing it since the beginning of time.

I don't know about you but anything that can come and go every year just doesn't seem like a man made issue any more than winter temperatures being a seasonal 'atmospheric thermal energy depletion' low that we mysteriously 'fully recover from' every year as summer season comes around. Especially when one hemisphere see a gain and the other sees a drop then reverses 6 months later predictably every year.

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#13
In reply to #9

Re: How They Did It: An Analysis of Emission Defeat Devices in Modern Automobiles

08/01/2017 10:49 AM

Agree! Follow the money.

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#12
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Re: How They Did It: An Analysis of Emission Defeat Devices in Modern Automobiles

06/06/2017 5:04 PM

Yes and we used to spray DDT on kids to eliminate lice, and insulate their schools with asbestos. Science teachers as late as 1968 let students hold mercury in their hands. What we don't know when we invent something, cannot be held against the inventor decades later. Was he supposed to be a Jules Verne or a Nostradamus and see what effect lead would have? Back then, they couldn't even see how much increase in burning of gasoline would occur in 20 years, let alone 50 or more.

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#10
In reply to #3

Re: How They Did It: An Analysis of Emission Defeat Devices in Modern Automobiles

05/23/2017 11:39 PM

Midgley was the Devil....

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#11
In reply to #10

Re: How They Did It: An Analysis of Emission Defeat Devices in Modern Automobiles

05/25/2017 1:27 PM

IIRC SAT scores show similar curves

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#7
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Re: How They Did It: An Analysis of Emission Defeat Devices in Modern Automobiles

05/23/2017 9:38 PM

Political correctness paints with a broad sloppy brush that generally makes a mess of everything....

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#4

Re: How They Did It: An Analysis of Emission Defeat Devices in Modern Automobiles

05/23/2017 8:49 PM

I'm getting a 404 - Page Not Found error with the second link.

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#5
In reply to #4

Re: How They Did It: An Analysis of Emission Defeat Devices in Modern Automobiles

05/23/2017 9:18 PM

The link is corrupted. Try this one instead.

https://cseweb.ucsd.edu/~klevchen/diesel-sp17.pdf

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#6
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Re: How They Did It: An Analysis of Emission Defeat Devices in Modern Automobiles

05/23/2017 9:35 PM

Thanks. That one works.

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