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2. Crankcase ventilation system - Wikipedia

   en.wikipedia.org/wiki/Crankcase_ventilation_system

   PCV valve on Ford Taunus V4 engine (feeding from left side valve cover into the inlet manifold) A crankcase ventilation system (CVS) removes unwanted gases from the crankcase of an internal combustion engine. The system usually consists of a tube, a one-way valve and a vacuum source (such as the inlet manifold).

3. List of auto parts - Wikipedia

   en.wikipedia.org/wiki/List_of_auto_parts

   Distributor cap; Drive belt; Engine block; Engine cradle; Engine shake damper and vibration absorber; Engine valve; Fan belt; Gudgeon pin ; Harmonic balancer; Heater; Mounting; Piston. Piston pin and crank pin; Piston pin bush; Piston ring and circlip; Poppet valve; Positive crankcase ventilation valve (PCV valve) Pulley part; Rocker arm ...

4. Rocker cover - Wikipedia

   en.wikipedia.org/wiki/Rocker_cover

   A rocker cover, (UK), or valve cover (elsewhere) is a cover that encloses the rocker arm in an internal combustion engine, bolting with a gasket seal to the engine head. Engines with more than one head (such as a V8 ) will have multiple rocker covers.

5. Tappet - Wikipedia

   en.wikipedia.org/wiki/Tappet

   A tappet or valve lifter is a valve train component which converts rotational motion into linear motion in activating a valve. It is most commonly found in internal combustion engines , where it converts the rotational motion of the camshaft into linear motion of intake and exhaust valves, either directly or indirectly.

6. Valvetrain - Wikipedia

   en.wikipedia.org/wiki/Valvetrain

   Cutaway of a dual overhead camshaft engine 1969 AMC V8 overhead valve engine. The rocker cover has been removed, so the pushrods, rocker arms, valve springs, and valves are visible. A valvetrain is a mechanical system that controls the operation of the intake and exhaust valves in an internal combustion engine. [1]

7. Rocker arm - Wikipedia

   en.wikipedia.org/wiki/Rocker_arm

   The most common use of a rocker arm is to transfer the motion of a pushrod in an overhead valve (OHV) internal combustion engine to the corresponding intake/exhaust valve. In an OHV engine the camshaft at the bottom of the engine pushes the pushrod upwards. The top of the pushrod presses upwards on one side of the rocker arm located at the top ...