Quote:
Originally Posted by racprops
I will take a deeper look, but I can see from the title: "De-atomization in intake tract in IC racing engines" That this is concerned with RACING!!
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And your point?
Yes, I get that you're trying to make a fuel sipper, not a fuel guzzler. But getting the most power from the least amount of fuel helps both worlds. And you can still build an engine that gets as good of fuel mileage as possible and let the power fall wherever it falls, even if it's pretty puny.
In some instances power and fuel mileage are at odds with each other.
- A bigger engine will run with the throttle more closed running less efficiently.
- More boost means more enrichment, which also isn't good for fuel mileage.
- Large, open, unrestrictive intake tracts don't help fuel mileage any more than keeping the throttle valve large, open, and unrestrictive (unless maybe it's a diesel, but then it would need to be sized for the lower RPMs you're likely going to be targeting, which again would be smaller than what a performance expert would recomend).
But you will find pretty much zero ecomodders who can compare themselves to racers when it comes to testing. Racers can do dozens, hundreds or perhaps thousands of complete engines with all their systems, whereas most of us ecomodders have built maybe a couple of engines.
And so when it comes to things like:
- More fuel atomization,
- More compression in general,
- Less restrictive exhaust, or at least understading how exhaust and intakes actually flow instead of just slapping on big tubes thinking that's going to solve everything.
These are the things that get you more power from less fuel, those things help with people striving for either goal. Some of the most fuel efficient car engines in the world are F1 race cars, being around 50% efficient, they've got a lot more testing, trial and error, experience, whatever you want to call it, it's much more solid knowledge than some internet myth floating around that if you put on a big open intake you'll somehow miraculously get better fuel mileage.