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For twin-cam or DOHC engines, VCT was used on either the intake or exhaust camshaft. (Engines that have VCT on both camshafts are now designated as Ti-VCT.↓) The use of variable camshaft timing on the exhaust camshaft is for improved emissions, and vehicles with VCT on the exhaust camshaft do not require exhaust gas recirculation (EGR) as retarding the exhaust cam timing achieves the same ...
2016–2020 Voodoo V8 —DOHC 5.2 L (Shelby GT350/350R) 2020–2022 Predator V8 —DOHC 5.2 L, supercharged (Shelby GT500 & 2022 F-150 Raptor R) 2023–present Carnivore V8 —DOHC 5.2 L, supercharged (2023 F-150 Raptor R) 1994–1997 Ford-Cosworth EC / ED engine—DOHC 3.0/3.5 L (Formula One racing engine)
For variable valve lift, competing technologies (e.g., Honda's VTEC and BMW's Valvetronic) use electromechanical concepts, achieving valve lift variation via dedicated mechanisms; it can also be combined with camshaft phasers to allow control of both valve lift and phase. In contrast, MultiAir uses managed hydraulic fluid to provide variable ...
SOHC design (for a 1973 Triumph Dolomite Sprint) . The oldest configuration of overhead camshaft engine is the single overhead camshaft (SOHC) design. [1] A SOHC engine has one camshaft per bank of cylinders, therefore a straight engine has a total of one camshaft and a V engine or flat engine has a total of two camshafts (one for each cylinder bank).
The Ford I4 DOHC engine is a cast iron block 4-cylinder inline internal combustion engine with twin overhead camshafts, produced by the Ford Motor Company at Dagenham Engine Plant. It was initially available as a 2.0-litre 8-valve version, and later in 2.0 and 2.3-litre 16-valve versions from 1989 to the end of production of the MK2 Ford Galaxy ...
The camshaft VCT (phaser) design was changed to improve reliability and reduce the development of an engine start-up tapping/rattling noise over time. Ford uses a single piston cooling jet per cylinder, but the oil volume was increased.