Toymods Car Club Inc: Tech & Conversions => Any engine builders / machinest out there heard of a Bourke Engine or a Very Lean Burn Engine?

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86tt
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August 2004

Re: Any engine builders / machinest out there heard of a Bourke Engine or a Very Lean Burn Engine?

Mon, 12 September 2005 11:51

Norbie wrote on Mon, 12 September 2005 21:23

As far as I can tell from that badly put together web site, it's just a conventional 4-stroke engine with a scotch yoke instead of the more common crankshaft and connecting rod. This does have certain advantages but I fail to see how it can do all of those wonderful things listed above.

Quote:

the piston are designed to be completely straight and no side movements as in the 4 stroke engine, thus completely immune to damages by detonation

Sounds great, but what does piston side loading have to do with detonation? Hmmm let me see - nothing. It's the usual pseudo-science BS you see all over the internet.

the website is actually put together by one of many many people experimenting the concept, and is no representation of the Bourke engine, although at least the guy stayed with the name "Bourke" whereas so many other people invented their own name and gave no credit to the original inventor (Bourke) and pretended they've invented the engine!

This engine was actually designed in the early 1920s, and at that time it produced 50hp from 50cubic inches (about 460cc I think) which is something a 4 stroke engine can only dream about at that moment in time...

the movements behind the piston are straight, whereas the 4 stroke have a circular motion behind the piston (connecting rods), which if a detonation occur, would destroy the piston because the combined force of the side movement and vertical movements, (will put a hole through the piston at the right timing where the connecting rod is), but if the mechanical movement behind the piston is straight, all that happens if the detonation occured at the wrong timing, would be a slight lost of efficiency and/or rough running in that instance of time, therefore the engine can afford to run very very lean, together with the low parts count and low running temp., will give an incredible fuel consumption.

I'm not sure what's more BS, you or the internet, but if you're not interested, just stay in your little world and dismiss everything that you wasn't "taught" as BS, there were many great experiments and inventions all documented on patents documents and newspaper, but all I was interested in is, if anyone here heard of it or tried building one from toymods, as I can't imagine it being an expensive project, there are many people in the world out there that have tried building it, some with great sucess, if you never heard of it Norbie, then certainly I don't care about what YOU think, and I don't want to know about your whinging either... Laughing

[Updated on: Mon, 12 September 2005 12:03]

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