View Single Post
  #211   Report Post  
Old September 26th 15, 07:27 PM posted to alt.home.repair,rec.autos.tech,sci.electronics.repair
Ashton Crusher[_2_] Ashton Crusher[_2_] is offline
external usenet poster
 
First recorded activity by DIYBanter: Jul 2007
Posts: 1,379
Default EPA caught VW cheating - how does the car know it's being tested?

On Thu, 24 Sep 2015 02:55:49 +0000 (UTC), Vincent Cheng Hoi Chuen
wrote:

Ashton Crusher wrote in
:

That's my point for this thread branch, yes. Not only isn't it worth
it, the code is none of teh EPA's damn business.


What I don't understand is that the code, apparently, allowed *more*
fuel to the engine (to cool the combustion chamber) which lowered NOx
emissions.

So, fixing the problem should result in *less* fuel to the engine, if
that's the case.

When they reflash the ecu, wouldn't that lowering of fuel *increase* gas
mileage *and* bring NOx emissions back down to where they said they were?


Have you actually seen any factual data that they were providing more
fuel? From the little bit of decent info I've seen it looked more
like they were trying to extend the life of some "filter" by turning
the filter "off" and just letting the stuff fly out the tailpipe.

some info here..
http://www.nytimes.com/interactive/2...explainer.html