Why don't new cars use intake heaters or smaller wheels to…
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Why don't new cars use intake heaters or smaller wheels to increase fuel economy?
They've resorted to using brake rotors too thin and light to resurface, low tension oil rings, and stupid door handles to reduce fuel consumption while leaving obvious oversights are still on the table.
If they put an intake heating grid (like they use on diesels) or had a secondary intake by the hot exhaust manifold they could decrease the air density on demand to allow the engine to run leaner without producing NOx. It's simple, it doesn't get gummed up like an EGR, it doesn't require monitoring exhaust pressure, and it would improve fuel economy.
Or wheel size, the un-sprung weight reduces efficiency while making the car ride worse with tires that cost much more to replace. 20 inch wheels offer no benefit to a normal road car, they didn't need to fit larger rotors. Consumer taste didn't stop them from making a ton of other changes.
#cars
They've resorted to using brake rotors too thin and light to resurface, low tension oil rings, and stupid door handles to reduce fuel consumption while leaving obvious oversights are still on the table.
If they put an intake heating grid (like they use on diesels) or had a secondary intake by the hot exhaust manifold they could decrease the air density on demand to allow the engine to run leaner without producing NOx. It's simple, it doesn't get gummed up like an EGR, it doesn't require monitoring exhaust pressure, and it would improve fuel economy.
Or wheel size, the un-sprung weight reduces efficiency while making the car ride worse with tires that cost much more to replace. 20 inch wheels offer no benefit to a normal road car, they didn't need to fit larger rotors. Consumer taste didn't stop them from making a ton of other changes.
#cars
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