VW Diesels

JCL · #1 09-22-2015, 12:57 AM

Quote:

Originally Posted by bawareca

Much more than 20 bil, me thinks. It is 15 billion loss in value and up to 18 billion fines. Next question is what are they going to do with the affected cars. If they have to retrofit urea injection this could cost a lot, and probably will never work right. And the class law suits have already started. As someone said already on another forum this may be too much for VW to swallow.
I really cannot understand why someone in his right mind will want to save $1-2 k on a car when the potential fine is 20 times that. ANd doing that for 6 years too

It sounds like the software installed on the vehicles turned off already installed emissions devices. The fix would be to install updated software that doesn't do so. The vehicles could seemingly meet the test standards, but were tuned to not adhere to those settings when they detected operation that was other than the test cycle.

bawareca · #2 09-22-2015, 09:59 AM

Quote:

Originally Posted by JCL

It sounds like the software installed on the vehicles turned off already installed emissions devices. The fix would be to install updated software that doesn't do so. The vehicles could seemingly meet the test standards, but were tuned to not adhere to those settings when they detected operation that was other than the test cycle.

^^^The computer cuts the power and change the engine mode so it conforms to the emission standarts. These cars have no DEF, or Urea injection installed and this is what takes care of the nitrous oxides.

SlickGT1 · #3 09-22-2015, 10:58 AM

Quote:

Originally Posted by bawareca

^^^The computer cuts the power and change the engine mode so it conforms to the emission standarts. These cars have no DEF, or Urea injection installed and this is what takes care of the nitrous oxides.

This.

Yea, they have been sending people recalls trying to get this software bs thing wiped out, but lot of people have tunes already. VW is telling them it will wipe the entire computer.

Funny how last week 7 valuation houses were giving VW a must buy rating. Now they are nearly -30% this week. Still recommending a buy at under $100.

VW was posed to be the biggest global automaker. Curious how much rape they are about to receive globally.

They are down 20% in franfurt too.. Joint investigations are pegging the number of affected vehicles at 11 million.

JCL · #4 09-22-2015, 05:37 PM

Quote:

Originally Posted by bawareca

^^^The computer cuts the power and change the engine mode so it conforms to the emission standarts. These cars have no DEF, or Urea injection installed and this is what takes care of the nitrous oxides.

There are many factors in the trade off calculation with NOx.

First would be fuel efficiency.

Power would be there also, and potentially engine service intervals, engine life, etc.

JCL · #5 09-22-2015, 05:40 PM

To me, the big question is, what about the rest of the (non VW) automakers?

We know that engine maps have been tuned for the EPA fuel efficiency test, everything from shifting parameters to cold start modes vs warm start modes. That is legal, if done within limits.

Is it possible that no other manufacturer has played with similar algorithms as VW has done? Certainly the large truck engine manufacturers did it, but what about the current fleet?

JCL · #6 09-22-2015, 05:47 PM

For those interested in the technical description of what the EPA says VW did, here is the EPA Notice of Violation.

http://www3.epa.gov/otaq/cert/docume...a-09-18-15.pdf

bawareca · #7 09-22-2015, 06:03 PM

Quote:

Originally Posted by JCL

There are many factors in the trade off calculation with NOx.

First would be fuel efficiency.

Power would be there also, and potentially engine service intervals, engine life, etc.

Sure thing. If you cut the power in half, the NOx will be reduced in [almost] half. I meant that Urea injection will allow for reduced NOx without sacrificing the power and efficiency too much. Reports mention that X5 diesel passed the [real world] tests with flying colors. I dont know which model it was, but E70 is down only 20 or so hp (5-6%)of the ROW model. Thanks to the Urea injection.