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Fascinating article on engines/HP


NAXJA Forum User
Colorado Springs
Interesting. I am surprised there have been no other comments.
I feel incredibly sorry for that man, and awed at what he's managed to do. Accomplishing anything over there can be insane...he's really got a fire under his butt for this. The tread title was right, definitely fascinating...and so simple! almost makes ya want to try it yourself, huh?
Interesting, yes. new? no.

Mercury outboards had squish forty years ago. Any thing to mix the fuel and air better will improve the combustion and therefore the economy e.g. power. Some systems bubbled the air through a gasoline pool. Too many blowups. All over the world people try to get more mileage except her in the USA....
CaptTrev said:
All over the world people try to get more mileage except her in the USA....

Even the rough chamber is not new, but it is not efficient at high rpm or a wide range of rpm where the typical modern vehicle engine needs to operate. The disadvantages suffered by the featured inventor's engines, low rpm pump efficiency & low compression combined with low octane fuels, all limit the performance envelope to a narrow powerband like that reported in the article for the B&S sidevalve engine (a large lawnmower engine). These limits are an advantage to aid exploring the only usable enhancement left for these obsolete (from a modern world prospective) prime movers: high efficiency stationary engines (constant speed pumps, compressors, etc.).

The actual power output per displacement with the design is low, and emissions high, limiting the uses for these engines. The cold temperatures is a byproduct of low power, and not necessarly directly related to low efficiency.

This engine/chamber turbulance technology in not new, but the potential application with full on-line hybred drivetrains (constant speed engines operating 100% of the on-demand cycle) and the potential to couple a constant speed engine with a continously variable transmission (CVT) for vehicle applications is new.

The small displacement constant speed engine market has stagnated for decades (the market saturated with B&S flatheads), with only a few newcommers in the market. Honda and Kawasaki OHV engines are designed more for quiet operation than efficiency, as are the newer Generac and Onan generator engines. When the need for high efficency constant speed engines increases, as applications open up the need, then major manufacturers will spend the R&D to make this patent seem prehistoric (as far as the technology is concerned).