A camshaft is a long bar with egg-shaped eccentric cam lobe. Each lobe has a follower. As the camshaft is rotated, the follower is forced up and down as it follows the profile of the cam lobe. The followers are connected to the engine’s valves and fuel injectors through various types of linkages called pushrods and rocker arm. The pushrods and rocker arms transfer the reciprocating motion generated by the camshaft lobes to the valves and injectors, opening and closing them as needed. After the valves have been forced open by the rocker arms, the valves are again closed by springs.
MAIN/AUX. ENGINE SPARES:
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