Multi-valve
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In automotive engineering a multi-valve or multivalve engine is one where each cylinder has more than two valves. A multi-valve engine has better breathing and may be able to operate at higher revolutions per minute (RPM) than a two-valve engine, delivering more power.
A cylinder head of a four valve engine. ( Nissan VQ engine )
Cutaway model of Subaru's i-AVLS variable valve timing system on SOHC 4-valve-per-cylinder EJ25 boxer engine at Tokyo Motor Show 2007.
Combustion chamber of a 2009 Ford Ecoboost 3.5-liter turbocharged V6 petrol engine (77.8 kW/liter) showing two intake valves (right), two exhaust valves (left), centrally placed spark plug, and direct fuel injector (right).
A cylinder head from a 1987 Honda CRX Si showing SOHC, rocker arms, valve springs, and other components. This is a multi-valve configuration with two intake valves and one exhaust valve for each cylinder.
Bugatti Type 18
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The Bugatti Type 18, also called the Garros, is an automobile produced from 1912 through 1914. Produced shortly after the start of the business, the design was something of a relic. It had much in common with the cars Ettore Bugatti had designed for Deutz Gasmotoren Fabrik but with the radiator of the Type 13. Only seven examples were built, and three are known to survive.
Black Bess
No. 715 at Schlumpf, Mulhouse, 2014
Image: 1913 Bugatti Type 18 1
Image: 1913 Bugatti Type 18 Sports Two seater Black Bess p 1