W18 engine: Difference between revisions
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==Automotive usage== | ==Automotive usage== | ||
The W18 layout has been considered for use in motor vehicles by | The W18 layout has rarely been considered for use in motor vehicles by car manufacturers, and none have reached production. | ||
In 1967, [[Scuderia Ferrari]] built a prototype [[W3 engine]] as a feasibility study for a {{convert|3.0|L|cuin|0|abbr=on}} W18 engine to use in Formula One.<ref name="Ludvigsen, P3C">{{Cite book | |||
|title=The V12 Engine | |title=The V12 Engine | ||
|last=Ludvigsen |first=Karl | |last=Ludvigsen |first=Karl | ||
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|ref={{harvid|Ludvigsen|V12 Engine}} | |ref={{harvid|Ludvigsen|V12 Engine}} | ||
|pages=356–357 | |pages=356–357 | ||
}}</ref> In the late 1990s, the [[Bugatti EB 118]], [[Bugatti EB 218]], [[Bugatti 18/3 Chiron]] and [[Bugatti Veyron#Origins|Bugatti EB 18/4 Veyron]] concept cars were fitted with W18 engines,<ref>{{cite web |title=Bugatti's First Chiron Was A Lamborghini Diablo With A W18 Engine |url=https://www.carthrottle.com/post/bugattis-first-chiron-was-a-lamborghini-diablo-with-a-w18-engine/ |website=www.carthrottle.com |access-date=4 November 2019 |language=en}}</ref><ref>{{cite web |title=Volkswagen Made An Even Weirder Engine Before The Bugatti W16 |url=https://jalopnik.com/volkswagen-made-an-even-weirder-engine-before-the-bugat-1823281378 |website=www.jalopnik.com |access-date=4 November 2019}}</ref> prior to the production version of the Bugatti Veyron using a [[W16 engine]] instead. | }}</ref> | ||
A W18 was considered as a flagship option for the [[Mercedes-Benz W140]] S-Class and a potential future [[supercar]] to supersede the [[Mercedes-Benz M120 engine|M120 V12]], which was still being developed at the time. Internally classified as the M216, it was to share many internal components with existing Mercedes-Benz [[Straight-six engine|inline-six engines]] in order to save on development and production costs. Development of the engine was halted when prototypes of the M120 engine proved satisfactory, and it was decided there was no need for a larger engine.<ref>{{Cite web |date=2020-01-29 |title=S-Klasse mit ACHTZEHN-Zylinder: Das ist der Mercedes 800 SEL |url=https://www.autobild.de/artikel/mercedes-800-sel-w-140-s-klasse-mit-8-0-liter-w18-motor-16164113.html |access-date=2025-10-16 |website=AUTO BILD |language=de}}</ref> | |||
In the late 1990s, the [[Bugatti EB 118]], [[Bugatti EB 218]], [[Bugatti 18/3 Chiron]] and [[Bugatti Veyron#Origins|Bugatti EB 18/4 Veyron]] concept cars were fitted with W18 engines,<ref>{{cite web |title=Bugatti's First Chiron Was A Lamborghini Diablo With A W18 Engine |url=https://www.carthrottle.com/post/bugattis-first-chiron-was-a-lamborghini-diablo-with-a-w18-engine/ |website=www.carthrottle.com |access-date=4 November 2019 |language=en}}</ref><ref>{{cite web |title=Volkswagen Made An Even Weirder Engine Before The Bugatti W16 |url=https://jalopnik.com/volkswagen-made-an-even-weirder-engine-before-the-bugat-1823281378 |website=www.jalopnik.com |access-date=4 November 2019}}</ref> prior to the production version of the Bugatti Veyron using a [[W16 engine]] instead. | |||
In 2025, [[Porsche]] filed a patent for a W18 with intake manifolds atop each cylinder head. The patent also details the potential for turbocharging.<ref>{{Cite web |last=Vijayenthiran |first=Viknesh |last2=Biermann |first2=Roger |date=2025-10-20 |title=Porsche's New W18 Engine Looks Perfect For A Hypercar |url=https://carbuzz.com/porsche-w-engine-patent/ |access-date=2025-10-26 |website=CarBuzz |language=en}}</ref><ref>{{Cite web |title=WIPO - Search International and National Patent Collections |url=https://patentscope.wipo.int/search/en/detail.jsf?docId=DE465751793 |access-date=2025-10-26 |website=patentscope.wipo.int}}</ref> | |||
{{clear right}} | {{clear right}} | ||
Latest revision as of 21:00, 26 October 2025
Template:Short description Script error: No such module "Multiple image".
A W18 engine is an eighteen-cylinder piston engine with three banks of six cylinders in a W configuration.
The W18 layout is rarely used, with the only production examples being several aircraft during the 1920s and 1930s. Prototype W18 engines were produced for concept cars predecessors to the Bugatti Veyron in the late 1990s.
Aircraft usage
The first example was the German Mercedes D.VI aeroengine, which were built since 1915. A later example is the 1929 Hispano-Suiza 18R, an aircraft racing engine produced in limited quantities in France.[1] This was followed in 1934 by the Isotta Fraschini Asso 750, which was built in Italy and used in several flying boats.[2] The Asso 750 was water-cooled and used an angle of 60 degrees between banks. The 1943 Tatra T955 was a prototype diesel aircraft engine which used a W18 layout.Script error: No such module "Unsubst".
Automotive usage
The W18 layout has rarely been considered for use in motor vehicles by car manufacturers, and none have reached production.
In 1967, Scuderia Ferrari built a prototype W3 engine as a feasibility study for a Script error: No such module "convert". W18 engine to use in Formula One.[3]
A W18 was considered as a flagship option for the Mercedes-Benz W140 S-Class and a potential future supercar to supersede the M120 V12, which was still being developed at the time. Internally classified as the M216, it was to share many internal components with existing Mercedes-Benz inline-six engines in order to save on development and production costs. Development of the engine was halted when prototypes of the M120 engine proved satisfactory, and it was decided there was no need for a larger engine.[4]
In the late 1990s, the Bugatti EB 118, Bugatti EB 218, Bugatti 18/3 Chiron and Bugatti EB 18/4 Veyron concept cars were fitted with W18 engines,[5][6] prior to the production version of the Bugatti Veyron using a W16 engine instead.
In 2025, Porsche filed a patent for a W18 with intake manifolds atop each cylinder head. The patent also details the potential for turbocharging.[7][8]
Marine usage
The W18 layout has been used on the high seas; CRM Motori SpA marine engines.
References
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