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Some V engines with four camshafts have been marketed as "quad-cam" engines, [9] however technically "quad-cam" would require four camshafts per cylinder bank (i.e. eight camshafts in total), therefore these engines are merely dual overhead camshaft engines. Many DOHC engines have 4 valves per cylinder (sometimes 5, Audi or Volkswagen for ...
The Quad 4 is a family of straight-four engines produced by General Motors' Oldsmobile division. Several double overhead camshaft (DOHC) versions were produced between 1987 and 2002, and one single overhead camshaft (SOHC) model was built from 1992 to 1994.
The valvetrain layout is defined according to the number of camshafts per cylinder bank. Therefore, a V6 engine with a total of four camshafts - two camshafts per cylinder bank - is usually referred to as a double overhead camshaft engine (although colloquially they are sometimes referred to as "quad-cam" engines). [14]
The Oldsmobile Quad 4 is a straight-four engine with four valves per cylinder and dual overhead camshafts — the first volume production engine designed entirely in the US to have these features. The factory Quad 4 produced 150 hp (112 kW) and 160 lb⋅ft (217 N⋅m) of torque in its initial configuration.
A special twin DOHC (QUAD CAM) version of the 2.9 was created by Cosworth Engineering in 1991. Although it shared the same block as the standard 2.9, power output was up to 195 PS (143 kW; 192 hp) and torque was boosted to 203 lb⋅ft (275 N⋅m) at 4500 rpm. This engine (code BOA) was used in the Ford Scorpio Cosworth 24V.
The Toyota UZ engine family is a gasoline [1] fueled 32-valve quad-camshaft V8 piston engine series used in Toyota's luxury offerings and sport utility vehicles. [2] Three variants have been produced: the 1UZ-FE, 2UZ-FE, and 3UZ-FE.
All Volkswagen Group V8 gasoline engines are constructed from a lightweight, cast aluminum alloy cylinder block (crankcase) and cylinder heads. They all use multi-valve technology, with the valves being operated by two overhead camshafts per cylinder bank (sometimes referred to as 'quad cam').
The Suzuki Quadsport LT230S (commonly referred to as the LT230 and also the "little brother" to the LT250R) was the first sport variety all-terrain vehicle sold in 1985.. It is powered by an overhead cam 2-valve 229 cc ("230") 4-stroke single-cylinder engine.