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Showing posts with label intake valve. Show all posts
Showing posts with label intake valve. Show all posts

Tuesday, June 14, 2016

Four-Stroke Engines: Flatheads and OHV designs

Flathead Engines:

An early and very common valve arrangement was the "flathead" engine.

Four stroke engines - basics

On the earlier post about Two-Stroke Engines, much of the focus was on the difficulty two-strokes have with exhaust gas and intake charge flow reversal and flow-through.  There was also some discussion of engineering techniques that attempt to overcome these issues.