Talk:Stroke (engine)

Displacement
This engine has a four inch stroke" means that on each stroke, the piston travels four inches. Bore is the diameter of the cylinder, which means that bore times stroke equals displacement.

A bit of correction here.

Since Bore is the diameter of the cylinder, the area covered by the piston is Ar = [pi*(bore)²]/4. Thus Ar times stroke equals displacement.

Best Regards

Michael Perakis

rating
I have reduced the "importance" rating from top to high as I do not consider this topic to be of "utmost" importance to the Automobile project ie more important than Engine itself (which actually is not yet rated). Malcolma 10:05, 2 November 2007 (UTC)

Por favor corregir la frase "accidente cerebro vascular" en la traducción al castellano en el tema de motor. Estaba leyendo sobre la motocicleta Honda Night Hawk 250 si no me equivoco y al darle click a traducción observé este error Gracias, Luis Alberto. Luis Alberto Caycho (talk) 10:56, 13 February 2017 (UTC)

Proposed restructure
The term stroke has several related meanings for an engine, which can be confusing for the average reader. Therefore, I think this article should more simply explain that stroke can mean: Cheers, 1292simon (talk) 23:27, 21 June 2017 (UTC)
 * type of engine (4-stroke vs 2-stroke)
 * each cycle of an engine (compression stroke, expansion stroke, etc)
 * stroke length

One-stroke engine
There are a handfull of articles talking about a new "one-stroke engine" being invented e.g. https://www.motortrend.com/news/innengine-e-rex-1-stroke-hydrogen-powered-range-extender-engine/ https://www.hotcars.com/e-rex-one-stroke-engine/ https://www.thedrive.com/news/company-builds-powerful-500cc-one-stroke-engine-immediately-installs-it-in-a-miata https://www.hotcars.com/e-rex-one-stroke-engine/ https://newatlas.com/automotive/innengine-one-stroke-engine-design/ https://interestingengineering.com/transportation/innengines-e-rex-motor-1-stroke-engine-technology https://www.globalvillagespace.com/tech/company-develops-500cc-one-stroke-engine-swiftly-installs-in-miata/ https://www.carexpert.com.au/car-news/pocket-sized-0-5l-one-stroke-concept-engine-in-an-mx-5 https://www.team-bhp.com/news/company-develops-500cc-one-stroke-engine-120-bhp https://www.rideapart.com/news/618464/erex-one-stroke-engine-design/ Should an article be made about it or should it at least be mentioned on this page? 208.84.93.25 (talk) 16:39, 9 October 2023 (UTC)

Three-stroke engine
Should anything about the designed but never built 3 stroke engine be included in the article? I got sources here.http://www.douglas-self.com/MUSEUM/POWER/unusualICeng/Threecycle/Threecycle.htm https://patents.google.com/patent/US8215268B2/en Startrain844 (talk) 22:57, 26 February 2024 (UTC)