It doesn't matter how long you're into cars, there's always something new to learn. Recently, I learned why some cars seem to have what appears to be worthless dead weight built in. It turns out
of pistons, connecting rods, crankshafts, and valvetrain parts that move. If these are even just a little out of whack, the engine will run poorly and slowly destroy itself. The designs of some engines is naturally unbalanced, and can require extra moving parts to reduce vibrations.
This isn’t the first time comfort and “refinement” have come before efficiency. Another great example of this is the average “slushbox” automatic transmission. Ideally, an automatic transmission should shift fast and hard, minimizing the wasted energy, excess heat, and premature wear that slipping causes. But, many people think there’s something wrong or uncomfortable if their car gives a rapid, jarring shift that you can hear and feel.
And the transmission? It’s usually just a single-speed gear reducer and differential, with no actual shifting taking place. Even when shifting does happen, there’s only 2 or 3 speeds, with industry estimates for the future maxing out at around 4 speeds. Compared to the 6, 8, and even 10 speeds gas-powered vehicles are coming with now , there’s not only a lot less to go wrong, but no need for stupid measures to increase smoothness.
, but in short, they’re combustion engines with only a few moving parts. They’re quite smooth, they’re compact, and easy to work on, but don’t tend to be very efficient or durable at the variety of speeds a car needs to go, but if they can move at a steady RPM, they do a lot better. So Mazda plans to use them in some range extended electric vehicles in the coming years.
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