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The crankshaft drives the camshaft (via a timing belt, timing chain or gears), which in turn actuates the intake and exhaust valves. [1] These valves allow the engine to inhale air (or an air/fuel mixture) and exhale the exhaust gasses. [2] The most common devices to transfer the drive are toothed rubber belts, metal timing chains or a set of ...
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 ...
The timing and lift profile of the valve opening events are controlled by the camshafts, through use of a carefully shaped lobe on a rotating shaft. The camshaft is driven by the crankshaft and, in the case of a four-stroke engine, rotates at half the speed of the crankshaft.
Producing 115 PS (85 kW; 113 hp) and 280 N⋅m (207 lb⋅ft) it was a vast improvement over the 1.8 Endura-D powering the Mk2 Mondeo. It featured a 16-valve cylinder head with twin chain driven camshafts and utilised a variable-geometry turbocharger with overboost function.
It shares most components with the Fox including the block, oil bathed timing belt, valvetrain, and ECU, but is port injected, lacks cylinder deactivation, and is naturally aspirated; as a result, its compression ratio is raised to 12.0:1. It is built at Ford's Bridgend Engine Plant in the UK.
The damper will be fitted at the front of the engine (opposite the clutch or transmission) just beyond the cover of the timing chain, gears, or belt, and behind the accessory drive pulley (which may carry one or more V, serpentine, or cogged belts.) In older vehicles the pulley and damper were separate units that were bolted together.
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