Straight Line Reciprocating Engine...
Straight Line Reciprocating Engine...
(OP)
Forgive me all for posting this in all probability hare-brained notion; it is far out of my speciality, not that I would make any claim to know of what I speak even in that venue.
Nonetheless, I'd like to ask if any potential exists for this notion?
Please see the attached .PDF outlining my thoughts.
Nonetheless, I'd like to ask if any potential exists for this notion?
Please see the attached .PDF outlining my thoughts.





RE: Straight Line Reciprocating Engine...
A PhD thesis from Finland has been written on the subject:
https://oa
RE: Straight Line Reciprocating Engine...
RE: Straight Line Reciprocating Engine...
There are of course more parts involved; that may not be a detriment if the aggregate mass and expense of those many parts is comparable to the fewer but more massive and expensive components. A multitude of rotating parts may also be a good trade off if the mass of the reciprocating parts may be reduced and balancing shafts eliminated.
As discussed in the thesis, overall reliability and smoothness will be dependent upon the accurate fit and minimal clearance of the gearsets. In this case, where the gearsets are not crank-mounted, but exist as free-floating assemblies, it may be possible to mount the locator gears on eccentrics so that clearance may be adjusted without the use of high-precision gears.
I also don't see this mechanism as terribly fragile; yes absorbing piston pressure through the medium of a gear leaves me uncomfortable; but, because every individual crank is double-ended, and because those crank gears each engage at two (or more) points it would seem that a number of load paths exist to spread out those impulses, and that engineering in reliability shouldn't be insurmountable.
I make no claims that this approach is best or even better; I suggest only that it seems worthy of some thought. I brought this forward simply because progress seems require re-examintion of our basic assumptions periodically.
RE: Straight Line Reciprocating Engine...
RE: Straight Line Reciprocating Engine...
RE: Straight Line Reciprocating Engine...
RE: Straight Line Reciprocating Engine...
RE: Straight Line Reciprocating Engine...
Engineering is the art of creating things you need, from things you can get.
RE: Straight Line Reciprocating Engine...
RE: Straight Line Reciprocating Engine...
here is a thread that is related to your questions, though for some strange reason the thread was closed...
RE: Straight Line Reciprocating Engine...
To the OP - I think it's worthwhile to keep looking. We may find something useful, even out of something we've looked at before. There may be a reason that something old works now when it didn't before.
RE: Straight Line Reciprocating Engine...
Regards
Pat
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