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Old 06-20-2019, 8:41pm   #6
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Originally Posted by MrPeabody View Post
Ever since I learned in high school auto shop how a four stroke engine worked, I found it easy to understand.

But it amazes me to this day how fast it works.
Here's what Mr Nicolas A Otto designed and got to work that evolved into the engines we have today.

As you look and watch, a couple points.
The power stroke was originally the weight of the piston and rack coming down ( weight and vacuum from fired hydrogen mixture cooling)

No spark plug. Ignition was a sliding block ( slide valve) that literally cut off a piece of the hydrogen flame and transferred it to the combustion chamber.

Engine speed is controlled by restricting the exhaust gases.

This engine is a replica built by Wayne Grenning

Want entirely too much info? Here you go

An original Otto Langen engine at Rough and Tumble
it's the third oldest running atmospheric engine in the world and the oldest in the Americas
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