Quote:
Originally Posted by darcane
Hmm... That looks very familiar, but not from the same company. I can't remember where, but I'd put money on this not being a new idea.
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There we go. Nearly identical design circa
1879:
The Deutz compound engine: 1879
Patent issued to a Gottlieb Daimler (yes, that Daimler). Link above has a variety of other similar designs for compound engines. I believe these were popular back then since metallurgy wouldn't allow for the high compression of modern engines, so alternatives were needed to harness more energy from the fuel.