VW US Diesel emissions debacle

[kevm14]

Bosch speaks up.

http://www.autoblog.com/2015/09/30/vw-d ... r-vehicle/

[Adam]

Bosch speaks up.

http://www.autoblog.com/2015/09/30/vw-d ... r-vehicle/

Sounds like they didn't read about the Ford Pinto fuel tank ordeal.
https://en.wikipedia.org/wiki/Ford_Pint ... ontroversy

[Adam]

Just saw an interesting presentation about this.

http://youtu.be/xZSU1FPDiao

From this year's CCC, two engineers look at the situation. In the first half, one talks about how ECU F/W is developed and other inside information about how cars are made. In the second half, the other one reverse engineers the code in a VW ECU and talks about the structure of the S/W and how it "cheats".

It's an hour long, but worth watching if you have the time.

[kevm14]

Ooh, that'll be great. Do you have a 30 second version for Ed?

[kevm14]

Ha the beginning is hilarious.

[Adam]

Ooh, that'll be great. Do you have a 30 second version for Ed?

30 second version:
Because of the way the requirements are developed and how things are tested, lots of people had to know about this. They explain how engineers are good at optimizing for a known condition, the standard emissions test driving cycle. The code is a literal implementation of an electronic circuit rather than traditional flow control based code. They detect the driving cycle and switch which emissions model they use in the S/W which ends up under injecting urea, hence increased emissions.

[Adam]

I should also note that these are Germans looking at a Euro market car. The US emissions code may be even more sneaky.

[kevm14]

This may explain why euro mpg estimates are so much higher than US ones.

[kevm14]

He makes it sound like European OEMs all outsource their ECUs.

[Adam]

He makes it sound like European OEMs all outsource their ECUs.

Yeah, to Bosch. Not totally unbelievable.