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The article does not make it clear - what is the gain to Cummins for the defeat device? Cheaper to build? Better mileage?
by fbdab103 3y ago
The article does not make it clear - what is the gain to Cummins for the defeat device? Cheaper to build? Better mileage?
- alwa 3y agoI believe it gives them better fuel mileage, better performance, and more power from a given design, essentially by skipping the energy cost of rectifying the NOx emissions. [0] The defeat device lets them pass regulatory muster by using lower-performing but cleaner tuning when under test, then the engine uses performance-optimized tuning instead under ordinary driving conditions. [0] https://www.cbsnews.com/news/vw-just-the-latest-in-long-history-of-cheating-car-companies/ https://www.cbsnews.com/news/vw-just-the-latest-in-long-hist...
- johng 3y agoMy guess would be it was requested by whomever bought them.
- SkyPuncher 3y agoThere’s a lot of performance to gain when you’re allowed to run an engine dirtier so they run them clean during the tests. Then when they get out in the real world, they run them at “higher performance” levels that might mean better fuel economy, that might be more horsepower, that might be a smoother, running engine or it could be more durability.