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2. Desmodromic valve - Wikipedia

   en.wikipedia.org/wiki/Desmodromic_valve

   Since those days, lift, velocity, acceleration, and jerk curves for cams have been modelled by computer [6] to reveal that cam dynamics are not what they seemed. With proper analysis, problems relating to valve adjustment, hydraulic tappets, push rods, rocker arms, and above all, valve float, became things of the past without desmodromic drive.

3. Tappet - Wikipedia

   en.wikipedia.org/wiki/Tappet

   Hydraulic tappets (along with rockers, valves and cylinder head) for a 1980-1985 Ford CVH engine. A hydraulic tappet, also known as a "hydraulic valve lifter" and "hydraulic lash adjuster", contains a small hydraulic piston that becomes filled with pressurised engine oil.

4. Hydraulic tappet - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_tappet

   A hydraulic tappet, also known as a hydraulic valve lifter or hydraulic lash adjuster, is a device for maintaining zero valve clearance in an internal combustion engine. Conventional solid valve lifters require regular adjusting to maintain a small clearance between the valve and its rocker or cam follower. This space prevents the parts from ...

5. Valvetrain - Wikipedia

   en.wikipedia.org/wiki/Valvetrain

   Pushrods are long, slender metal rods that are used in overhead valve engines to transfer motion from the camshaft (located in the engine block) to the valves (located in the cylinder head). The bottom end of a pushrod is fitted with a lifter, upon which the camshaft makes contact. The camshaft lobe moves the lifter upwards, which moves the ...

6. Denison Hydraulics - Wikipedia

   en.wikipedia.org/wiki/Denison_Hydraulics

   The main problem was that they were big, heavy, and only single-cylinder. For example, a typical 50 hp engine weighed 3 tons. After World War I, Mr. Cook wanted to retire. Bill Denison took over just as the engine market was dying. He continued to operate under the original Cook Motor Co. name. In 1925, Mr. Denison invented a hydraulic car pusher.

7. Overhead camshaft engine - Wikipedia

   en.wikipedia.org/wiki/Overhead_camshaft_engine

   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).