A W18 engine is an eighteen cylinder piston engine which usually has a single crankshaft with three banks of six cylinders arranged in an inverted broad arrow configuration. Recent W18 engines powered the Bugatti EB 118, Bugatti EB 218 and Bugatti 18/3 Chiron concept cars in the late 1990s. This engine featured three banks of six cylinders set 60 degrees apart. The W18 engine was abandoned due to shifting problems. Cylinder with piston in a steam engine A cylinder in the central working part of a reciprocating engine, the space in which a piston travels. ... Internal combustion piston engine Components of a typical, four stroke cycle, internal combustion piston engine. ... The Bugatti EB 118 show car debuted in 1998. ... The Bugatti EB 218 was a concept sedan. ... At the October 1999 IAA Auto Show in Frankfurt, Germany the Bugatti 18/3 Chiron was presented to the public for the first time. ... For the band, see 1990s (band). ...

The variation developed by Volkswagen retained the 18 cylinders but instead of three cylinder banks, it had four. This confused many who saw the specification in print at motor shows since 18 isn't evenly divisible by four. The design was loosely based on the concept Volkswagen used for its V5 engines which had one bank with three cylinders and one bank with only two. Essentially the four-bank W18 was two V9 engines (one bank of five cylinders and one bank of four) mated to a common crankshaft. Ultimately the design proved to be impractical. Volkswagen Group (ISIN: DE0007664005, TYO: 7659 ) is a German automobile manufacturer and one of the largest automotive companies worldwide. ... The V5 engine is a V form engine with five cylinders. ...

An earlier example is the Isotta Fraschini Asso 750 used to power the Italian Savoia-Marchetti S.55 seaplanes flown by Italo Balbo into Chicago in 1933. This engine used the same layout as the above-mentioned Bugatti - basically a vertical six with two adjacent banks set at 60 degrees each to make a W-18. The Savoia-Marchetti S.55 was a double-hulled flying boat produced in Italy beginning in 1924. ...

In 1967 Scuderia Ferrari built an experimental 498cc W3 engine in order to assess the potential for a 3-litre W18 Formula 1 engine. Although the engine developed 800bhp at 11000rpm, the idea was not proceeded with and subsequently in 1972 the rules were changed to outlaw the use of engines in Formula 1 with more than 12 cylinders. Scuderia Ferrari is the name for the Gestione Sportiva, the division of the Ferrari automobile company concerned with racing. ... The only W18 engines built to date powered the Bugatti EB 118, Bugatti EB 218 and Bugatti EB 18/3 Veyron concept cars in the late 1990s. ... Formula One, abbreviated to F1 and also known as Grand Prix racing, is the highest class of single-seat open-wheel auto racing. ... Formula One, abbreviated to F1 and also known as Grand Prix racing, is the highest class of single-seat open-wheel auto racing. ...

Components of a typical, four stroke cycle, DOHC piston engine. ... Engine configuration is an engineering term for the layout of the major components of an internal combustion engine. ... Usually found in 4 and 6 cylinder configurations, the straight engine (often designed as inline engine) is an internal-combustion engine with all cylinders aligned in one row, with no or only minimal offset. ... Four-stroke cycle (or Otto cycle) A single cylinder engine, colloquially known as a one-lunger or thumper, is an engine configuration consisting of just one cylinder, the simplest arrangement possible for an Otto or Diesel engine. ... A straight-two engine is a two cylinder piston engine that has its cylinders arranged in a single row. ... A Straight-3 is an internal combustion engine with three cylinders arranged in a straight line side by side. ... The straight-4 or inline-4 is an internal combustion engine with four cylinders aligned in one row. ... The Volvo B5252S is an example of a straight-5 engine. ... The straight-6 (also inline 6, I-6, or I6) is an internal combustion engine with six cylinders aligned in a single row. ... 1933 Bugatti DOHC straight-8 in a Type 59 Grand Prix racer 1940s Oldsmobile Straight-8 engine A Straight-8 is a straight engine with eight cylinders. ... A straight-9 engine is a straight engine with nine cylinders. ... A Straight-10 engine is a straight engine with ten cylinders. ... A Straight-12 engine is a Straight engine with twelve cylinders. ... A straight-14 engine is a straight engine with fourteen cylinders. ... The Boxer engine, first patented by German engineer Karl Benz A flat engine is an internal combustion engine with pistons that are all relatively horizontal. ... BMW motorcycle powered by a flat-twin engine A flat-twin is a two cylinder internal combustion engine where the cylinders are arranged in a flat configuration. ... A flat-4 is a four cylinder internal combustion engine where the cylinders are arranged in a flat configuration, also referred to as horizontally opposed. ... The flat-6 engine of the Honda Valkyrie motorcycle A flat-6 is a 6 cylinder configuration of a flat engine or boxer engine. ... A flat-8 is an internal combustion engine in flat configuration, having 8 cylinders. ... The flat 10 engine is an engine with two banks of five opposing cylinders each. ... A flat-12 is an internal combustion engine in flat configuration, having 12 cylinders. ... A flat-16 is an internal combustion engine in flat configuration, having 16 cylinders. ... A V engine is a common configuration for an internal combustion engine. ... Honda 90° transversely mounted V-twin A V-twin is a two cylinder internal combustion engine where the cylinders are arranged in a V configuration. ... 1700 cc High Compression Ford Taunus V4 V4 and V-4 redirect here. ... The V5 engine is a V form engine with five cylinders. ... The Ford Essex V6 engine V6 and V-6 redirect here. ... The Liberty V8 aircraft engine clearly shows the configuration, although modern automotive versions use a 90 degree block angle. ... A V10 engine is a V engine with 10 cylinders in two banks of five. ... Colombo Type 125 Testa Rossa engine in a 1961 Ferrari 250TR Spyder V-12 engine simplified cross-section V12 redirects here. ... 1933 Marmon V16 engine. ... A V20 engine is a V engine with 20 cylinders. ... A V24 engine is a V engine with 24 cylinders, suitable only for very large trucks or locomotives. ... The W engine is an engine configuration in which the cylinder banks resemble the letter W in the same way a V engine resembles the letter V. There have been three entirely different implementations of this concept: one with three banks of cylinders, one with four and one with two... A W8 engine is an eight cylinder piston engine in a W configuration, or two juxtaposed V4 engine blocks, coupled to one crankshaft. ... A W12 engine is a twelve cylinder piston engine in a W configuration. ... A W16 engine is a sixteen cylinder piston engine in a W configuration. ... An H engine (or H-block) is an engine configuration in which the cylinders are aligned so that if viewed from the front appear to be in a horizontal letter H. An H engine can be viewed as two flat engines, one atop the other. ... A U engine is a piston engine made up of two separate straight engine engines (complete with separate crankshafts) joined by gears. ... A U engine is a piston engine made up of two separate straight engine engines (complete with separate crankshafts) joined by gears. ... The VR6 engine is an internal combustion engine configuration developed by the Volkswagen Group. ... Fairbanks-Morse opposed piston diesel engines on the submarine USS Pampanito. ... An X engine is a piston engine comprising twinned vee-block engines horizontally-opposed to each other. ... Early Hemi in a 1957 Chrysler 300C See also: Chrysler Hemi engine Hemi (from hemisphere) is a design of internal-combustion engines in which the cylinder heads combustion chamber is of hemispherical form. ... The radial engine is an internal combustion engine configuration in which the cylinders point outward from a central crankshaft like the spokes on a wheel. ... This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... Napier Deltic powered British Rail Class 55 Alycidon, at the National Railway Museum, York, UK The term Deltic (meaning in the form of the Greek letter Delta) is used to refer to both the opposed piston high speed diesel engine designed and produced by Napier & Son, and the locomotives produced... A pistonless rotary engine is an internal combustion engine that does not use pistons in the way a reciprocating engine does, but instead uses one or more rotors, sometimes called rotary pistons. ... Wankel Engine in Deutsches Museum Munich, Germany The Wankel rotary engine is a type of internal combustion engine, invented by German engineer Felix Wankel, which uses a rotor instead of reciprocating pistons. ...

External links

• Volkswagen's VR6 and W-engines
• Bugatti's official site
• CAD Images by Ugo Vicenzi of an Asso 750 Isotta-Fraschini engine.
• The mighty "Asso 750 Isotta-Fraschini" Engines^{[dead link – history]}

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