A "cam phaser" is just an adjustable camshaft sprocket that can be turned by means of a computer-controled servo. Rather than just setting a certain amount of advance or retard, the computer can advance the cam or cams at low rpm to enhance driveability, and retard the cam or cams at h...
This can limit the speed of pushrod engines; the overhead camshaft, which eliminates the pushrod from the system, is one of the engine technologies that made higher engine speeds possible. A Pushrod Engine The camshaft in a pushrod engine is often driven by gears or a short chain. Gear-...
The valves are operated by the camshaft, which is connected to the crankshaft via the timing chain/belt. It’s important that thecamshaft and crankshaftwork in perfect harmony — something the timing belt ensures. When the timing is correct, that is, when the intake and exhaust valves open a...
The two overhead camshafts were driven by a train of eight spur gears off the nose of the crankshaft (four contained in the front of the cylinder head), all turning on roller bearings. The camshafts rotated in five plain bearings, each of which was contained in its own individual split...