Two-stroke engine

Rarity: Ultra rare

A topic known all over the world: only a few thousand cards.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Invention

Domain

Society

Knowledge cost

6

In collections

Nobody has pulled it yet.

What Wikipedia says

A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes of the piston, one up and one down, in one revolution of the crankshaft in contrast to a four-stroke engine which requires four strokes of the piston in two crankshaft revolutions to complete a power cycle.

Excerpt from the Wikipedia article “Two-stroke engine”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: A. Schierwagen using OpenOffice Draw, CC BY-SA 3.0, via Wikimedia Commons.