Quote:
Originally Posted by RWebb
oh, and how long have we been developing the internal combustion engine???
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With the exception of CATS, computer controlled fuel injection with O2 sensors and lighter materials, the IC hasn't changed much since the 1930's. I have text books on ICs from the 1930's that cover even fuel injection, super charging and turbocharging.
The fuel efficiency on cars isn't coming from the engines, it is coming from reducing weight and making the bodies more areodynamic. There are some improvements from fuel injection, but not as much.
Fuel economy took a hit in the 1990's, as the weight of cars increased with the mandatory protective systems.