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I got a electric car for commuting (120 MPGe) and keep the Smallblock Vortec for joyrides.Yeah, this is a lost cause for me. My car gets 16.7 mpg, the Blazer was averaging 11, and the F250 I don't even want to know.
2019 Express van powered by a Gasoline 4.3 V6
Not a valid comparison when diesels are invariably turbocharged. Without a turbo their specific power is garbage and their fuel efficiency not much better.IMHO You need low RPM torque to drive efficient. HP doesn't matter - that's why Diesels are so good at MPG - low RPM grunt.
Not a valid comparison when diesels are invariably turbocharged. Without a turbo their specific power is garbage and their fuel efficiency not much better.
Yes, and if we are to explore exactly why diesels are more fuel efficient we have to include higher compression ratio, unthrottled inlet, lower (mean) temperature combustion, more favourable ratio of specific heat during expansion, extended expansion ratio due to turbocharging (to the benefit of reduced 'air work' on the inlet side). It is less that low rpm delivers good fuel efficiency for them, more that low rpm is all that they are capable of!Diesel is a denser store of energy than gasoline, so there's that too.
Of all the things you've said, this statement is the most telling.
A person with even a very basic understanding of physics realizes that a vehicle shape which causes less resistance requires less energy to move it.
No wonder you have been unsuccessful at this for 20 years, you have no idea what you're doing.
Worse that that, I think it's to the cube.IIRC, the effect of air resistance is exponential. Square of velocity times something.