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Old 09-14-2015, 09:38 PM   #21
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Like I say, these concepts have been around for decades, but as you mentioned, they were phased out as the technology couldn't cope with the idea back then. Now with modern electronics, they can safely be reintroduced with far fewer reliability issues. The VW ACT takes 4 milliseconds to swith from 4 cylinders to 2.
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Old 09-18-2015, 09:44 AM   #22
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And as if further proof is needed, it looks like VW is in trouble over its "cheating"

http://mobile.nytimes.com/2015/09/19...referrer=&_r=1
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Old 09-18-2015, 09:54 AM   #23
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EPA Orders Volkswagen To Recall 482,000 Diesel Cars For Cheating On Emissions

I think that this article confirms that Volkswagen (read Audi) is ready to join F1. It would be nice to see some other manufacturer beat Mercedes.
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Old 09-18-2015, 01:11 PM   #24
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Way back around the year 2000 I seem to remember an article about three major truck engine makers (Caterpillar, Detroit Diesel, and Cummins if I remember correctly) who were fined because their engines emitted too much NOx. As I recall it, the engines were set up for best fuel efficiency, which called for higher combustion temperatures and pressures, in turn producing too much NOx. This was well before ultra-low sulfur fuel and external emission controls.
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Old 09-18-2015, 02:55 PM   #25
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I have heard similar things, like cars ecu's being able to detect when it's being tested in the lab so it can optimise fuel timing to make the car seem more efficient with lower emissions than you would ever get in reality. Roll on 2017 when they change the testing methods, by then every car will pay the same in road tax here (140 per annum) so the pressure on car manufacturers to get below the 100 grams of C02 per km threshold (so Road tax is free) will be non existent.
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Old 09-20-2015, 10:57 AM   #26
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I'm just gonna leave this here:

https://www.youtube.com/watch?v=dKef1JFpiCA
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Old 09-20-2015, 11:03 AM   #27
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Ah the power of the Internet. That's ace, hilarious!
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Old 09-20-2015, 09:48 PM   #28
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Also this...
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Old 09-21-2015, 06:37 AM   #29
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And now VW have officially been caught "Cheating the Test".

Oops.

Volkswagen under investigation over illegal software that masks emissions | Business | The Guardian

Oliver.
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Old 09-21-2015, 08:17 AM   #30
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Sorry Oliver, beat you to it. Scroll up ^^^
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