2LaneCruzer
Super Member
Hah! That's funny!
VW Clean diesels.... how did they get them so clean?
- Thread starter MossRoad
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Hah! That's funny!
Mace Canute
Elite Member
Yeppers...billions of dollars in fines, recall costs and lawsuits all because someone got curious and plugged in a tail pipe sniffer!
jmc
Elite Member
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Over the years, Porsche and VW have been intermingled and I forget exactly but P may be owned by VW by now.
Anyway, I had a 2006 Porsche 911 with a factory option "Loud Button" on the dashboard. Sounded good with the muffler bypassed but at certain speeds it became quiet, then loud again as you accelerated thru them. Apparently, those "quiet speeds" were the test points for the sound regulations. Same type of behavior as circumventing the emissions in my view- it just didn't involve the EPA.
Anyway, I had a 2006 Porsche 911 with a factory option "Loud Button" on the dashboard. Sounded good with the muffler bypassed but at certain speeds it became quiet, then loud again as you accelerated thru them. Apparently, those "quiet speeds" were the test points for the sound regulations. Same type of behavior as circumventing the emissions in my view- it just didn't involve the EPA.
dmccarty
Super Star Member
I have been really digging into marine diesel engine and EPA/MARPOL requirements. What is obvious is that the engines I am looking at is that for the same HP, the newer EPA mandated engines get worse MPG than older designs. The newer engines are less reliable, burn more fuel for the same HP, and cost more than the older engines. Some really old designs do much better MPG/HP wise. Of course one particular old design can only be bought as rebuilt because the company went out of business due to the EPA/MARPOL regulation but the engines are so danged good they can be rebuilt danged near forever to just like new condition.
Anyhow, there is a magazine called Professional Boat Builder and in the last issue, they had an article about the new EPA Tier III/IV engines. One of the interesting tid bits in the article, that another post mentioned, was that a UK newspaper was studying the new emission controlled engines in cars and found that the pollution controls only worked for a short time. This was because the pollution control systems were designed for steady load conditions, which would exist on a boat, tractor, bull dozer, but NOT on a car or truck that is constantly starting and stopping. The pollution controls on diesel engines under going variable loading that most people would see while driving did not work. I wish I knew which newspaper did the tests and on which cars....
Later,
Dan
Anyhow, there is a magazine called Professional Boat Builder and in the last issue, they had an article about the new EPA Tier III/IV engines. One of the interesting tid bits in the article, that another post mentioned, was that a UK newspaper was studying the new emission controlled engines in cars and found that the pollution controls only worked for a short time. This was because the pollution control systems were designed for steady load conditions, which would exist on a boat, tractor, bull dozer, but NOT on a car or truck that is constantly starting and stopping. The pollution controls on diesel engines under going variable loading that most people would see while driving did not work. I wish I knew which newspaper did the tests and on which cars....
Later,
Dan
sd455dan
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Yeppers...billions of dollars in fines, recall costs and lawsuits all because someone got curious and plugged in a tail pipe sniffer!
Makes me wonder if someone walks into a VW dealership and tries to buy one ,
sounds like the sales person just says sorry-can't sell you a diesel and our corporate VW US may be on the hook for 37,500 per violation= a possible $ 18 BILLION in fines, doubt there will be any raises in pay for a while...
mogwild
Silver Member
Makes me wonder if someone walks into a VW dealership and tries to buy one ,
sounds like the sales person just says sorry-can't sell you a diesel and our corporate VW US may be on the hook for 37,500 per violation= a possible $ 18 BILLION in fines, doubt there will be any raises in pay for a while...
Currently a stop sale in Canada for the diesels
sseelhoff
Veteran Member
Porsche, Audi and VW are all part of the same ownership group. The diesel issue also involves the Audi diesels, but Audi is not getting brought up since they are owned by VW. (Like we talk about the GM ignition issues, rather than parsing out Chevrolet, GMC-which is a brand owned by GM, etc...)
alchemysa
Veteran Member
Car makers have been cheating on emission tests for years, just as they cheat on fuel efficiency figures that no actual driver ever seems able to match. In its simplest form 'cheating' would entail suppyling a test engine/car that is absolutely perfect. A 'blueprinted' version, if you will, that no other car actually coming off the line could match.
Some cheating is so blatant you wonder how it ever passed inspection. I had a Merc 450SL convertible for many years. It had a belt driven blower bolted to the V8 engine that pumped fresh air into the exhaust. It supposedly was some kind of exhaust gas cooler but I could see no significant reason for this contraption other than to cheat exhaust emission tests. (A cubic foot of exhaust gas was 'cleaner' with the pump working than without, but of course the engine itself was no cleaner either way). Eventually the pump seized so I just removed it. I never noticed any difference in performance. In fact it was probably more efficient without it because it was one less thing robbing power from the engine.
Some cheating is so blatant you wonder how it ever passed inspection. I had a Merc 450SL convertible for many years. It had a belt driven blower bolted to the V8 engine that pumped fresh air into the exhaust. It supposedly was some kind of exhaust gas cooler but I could see no significant reason for this contraption other than to cheat exhaust emission tests. (A cubic foot of exhaust gas was 'cleaner' with the pump working than without, but of course the engine itself was no cleaner either way). Eventually the pump seized so I just removed it. I never noticed any difference in performance. In fact it was probably more efficient without it because it was one less thing robbing power from the engine.
QRTRHRS
Elite Member
I was reading an article today about this. The group is a non profit enviro group. The found other European deisel cars out of compliance save one from BMW.
The article also mentioned "rolling coal". The article did not dwell on it but I would bet it is being looked at.
I picked up on the article on my cell under Yahoo but I cannot get the link to work on my PC nor did I find it on the yahoo/news/autos site.
downsizingnow48
Elite Member
The EPA "highway" cycle models a 10 miles at speeds between 40 and 60 mph. No wonder those high mpg numbers are rarely observed real world.
