[pm-h] VW Emissions

[Reini Urban]

As explanation:

Before it should not have been called VW emission scandal, rather *Audi
emission scandal*. More Audi engines than VW engines were caught. Audi
build those VW engines for VW. Audi implemented the cheating parameters for
VW.

But now it should not be called Audi scandal anymore, rather a *Bosch
emission scandal*.

Bosch implemented a cheating model into their ECU which almost every car
maker uses. (Tested where also BMW, Daimler and a couple of others), and
the car maker only defines a "low temperature model switch" which detects
when the car is on the wheel doing the emission test or on the street.
Also very expensive car models were found cheating.

The guy also found a strange "Akustik_Funktion", an acoustic model in the
Bosch ECU disassembly, which is triggered by a so-called low temperature
signal to turn off the AdBlue (urea) injection. Naming the wheel test mode
(the cheating mode) Akustik Funktion is most likely cheating, because it
only emission related and not acoustic related.

He clearly found that the cheating model tests for abberations of the
standard european emission test cycle. With a certain percentage outside
the test cycle the ECU switches automatically from test mode to street
mode, with much less AdBlue (much higher emissions).

And I'm pretty sure every single car maker cheats on emissions like those.
The Americans where previously caught, and they have simplier-to-cheat
tests.
And the Asians use also the european test cycles and ECU.


2016-01-08 0:17 GMT+01:00 Julian Brown via Houston <houston at pm.org>:

> I found this interesting;
>
> http://lwn.net/SubscriberLink/670488/4350e3873e2fa15c/
>
> Julian
>
> _______________________________________________
> Houston mailing list
> Houston at pm.org
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> Website: http://houston.pm.org/
>



-- 
-- Reini
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