Four-stroke engine (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Four-stroke engine" in English language version.

Last modified: 21:45:47, 22 August 2026 (UTC)

Ref.Un. Ref.Website

Global rank English rank

63web.archive.org

1^st place

1^st place

41nicolaus-august-otto.de

low place

low place

low place

low place

11espacenet.com

950^th place

813^th place

low place

low place

low place

low place

11testingautos.com

low place

low place

2^nd place

2^nd place

low place

low place

1,437^th place

905^th place

8,684^th place

5,585^th place

autoblog.com (Global: 1,437^th place; English: 905^th place)

Neff, John (9 December 2005). "BMW Turbo Steamer Gets Hot and Goes". Autoblog. Retrieved 11 April 2016.

autos.ca (Global: low place; English: low place)

"Auto Tech: Atkinson Cycle engines and Hybrids". Autos.ca. 14 July 2010. Archived from the original on 26 August 2014. Retrieved 23 February 2013.

betp.net (Global: low place; English: low place)

"Best Place for Engineering and Technology, Air Standard Assumptions". Archived from the original on 21 April 2011.

doi.org (Global: 2^nd place; English: 2^nd place)

Sprouse III, Charles; Depcik, Christopher (1 March 2013). "Review of organic Rankine cycles for internal combustion engine exhaust waste heat recovery". Applied Thermal Engineering. 51 (1–2): 711–722. doi:10.1016/j.applthermaleng.2012.10.017.

ecen.com (Global: low place; English: low place)

Ferreira, Omar Campos (March 1998). "Efficiencies of Internal Combustion Engines". Economia & Energia (in Portuguese). Brasil. Retrieved 11 April 2016.

espacenet.com (Global: 950^th place; English: 813^th place)

worldwide.espacenet.com

US 367496, J. Atkinson, "Gas Engine", issued 2 August 1887

nhtsa.gov (Global: 8,684^th place; English: 5,585^th place)

"Fuel Economy". US: National Highway Traffic Safety Administration (NHTSA). Retrieved 11 April 2016.

nicolaus-august-otto.de (Global: low place; English: low place)

"125 Jahre Viertaktmotor" [125 Years of the Four Stroke Engine]. Oldtimer Club Nicolaus August Otto e.V. (in German). Germany. 2009. Archived from the original on 7 May 2011.

testingautos.com (Global: low place; English: low place)

"Four-stroke engine: how it works, animation". testingautos.com. Retrieved 25 January 2020.

uti.edu (Global: low place; English: low place)

"4-STROKE ENGINES: WHAT ARE THEY AND HOW DO THEY WORK?". UTI. 5 May 2020. Retrieved 19 November 2021.

web.archive.org (Global: 1^st place; English: 1^st place)

"125 Jahre Viertaktmotor" [125 Years of the Four Stroke Engine]. Oldtimer Club Nicolaus August Otto e.V. (in German). Germany. 2009. Archived from the original on 7 May 2011.
"Auto Tech: Atkinson Cycle engines and Hybrids". Autos.ca. 14 July 2010. Archived from the original on 26 August 2014. Retrieved 23 February 2013.
"Best Place for Engineering and Technology, Air Standard Assumptions". Archived from the original on 21 April 2011.