"bhtooefr" (bhtooefr)
02/19/2017 at 08:56 • Filed to: upsizing, emissions, efficiency, downsizing
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"bhtooefr" (bhtooefr)
02/19/2017 at 08:56 • Filed to: upsizing, emissions, efficiency, downsizing | 6
| 0 |
I’ve posted a few times before about the trend for automakers to upsize engines for the sake of improving real-world fuel economy and emissions performance. This time, I thought I’d build a timeline of manufacturer statements that they’re increasing engine sizes for these reasons, or (really, this is mostly Mazda and to an extent Toyota) avoided the trend altogether for those reasons.
Right now, this is pretty bare, but it’s meant as a work in progress - I’ll add things as I find them. Feel free to suggest other entries, I’ll add them.
2017-02-03: !!!error: Indecipherable SUB-paragraph formatting!!! (1.0 l 3-cylinders will continue for up! and Polo, no development of smaller engines than that, no development of smaller diesels than 1.6 l)
2017-01-24: !!!error: Indecipherable SUB-paragraph formatting!!! (Real Driving Emissions and Euro 6c explicitly cited as the reason, 1.5 l NA with wide-authority VVT and limited Atkinson-cycle operation replacing 1.3 l NA for the European market)
2016-10-14: !!!error: Indecipherable SUB-paragraph formatting!!! (Renault going from 0.9 l turbo to something larger (likely ~1.2 l), 1.6 l turbodiesel to ~1.7 l turbodiesel, GM going from 1.2 l turbodiesel to ~1.5-1.6 l turbodiesel, VW going from 1.4 l turbodiesel to 1.6 l turbodiesel)
2016-04-28: !!!error: Indecipherable SUB-paragraph formatting!!! (1.5 l turbo Atkinson-cycle engine replacing 1.4 l turbo Otto-cycle engine - while the displacement increase isn’t explicitly stated to improve efficiency, it was likely necessary for the Atkinsonization that Volkswagen did, and that improved efficiency - also, due to that and other technologies added to the engine, they’re claiming that the benefits apply in the real world)
2013-10-10: !!!error: Indecipherable SUB-paragraph formatting!!! (Atkinsonizing and upsizing suggested as the way to go for future Toyota powertrains to improve power and efficiency - however, Saga in a !!!error: Indecipherable SUB-paragraph formatting!!! with the same outlet suggests going with downsizing and turbocharging anyway)
2013-06-03: !!!error: Indecipherable SUB-paragraph formatting!!! (last slide of this PDF mentioned that Mazda maintained displacement in the SkyActiv-G family from the previous Z and L families due to real-world efficiency benefits)
2009-03-02: !!!error: Indecipherable SUB-paragraph formatting!!! (1.8 l NA Atkinson-cycle replacing a 1.5 l NA Atkinson-cycle engine, claims of improved highway fuel economy due to lower RPM operation)