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push rod
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gasoline engine lubrication system Labeled cross-sectional diagram of a V-type gasoline engine for an automobile, showing internal components such as pistons, crankshaft, camshaft, intake and exhaust valves, connecting rods, spark plugs, and intake manifold.
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push rod

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gasoline engine lubrication system
gasoline engine lubrication system Typical gasoline engine lubrication system.

A pushrod is a component in some internal combustion engines, specifically those with overhead valves. It's a rod that is moved by a cam, which in turn opens or closes a valve. This mechanism is part of the valve train, which controls the flow of gases into and out of the engine's cylinders. The pushrod transmits motion from the cam follower to rocker arms, which then press on the valve stems. This system requires precise clearance adjustments to ensure proper valve operation. While common in older engine designs, many modern engines use overhead camshafts, eliminating the need for pushrods.12

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  1. gasoline engine - Valves , pushrods , and rocker arms
  2. pushrod
  3. connecting rod

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