What connects the components at the crankshaft to the pistons in an engine?

The connecting rod is the component that links the crankshaft to the pistons in an internal combustion engine. Its primary role is to transfer the force generated by the pistons, which move up and down within the cylinders due to combustion, to the crankshaft, which then converts this linear motion into rotary motion. This is crucial for the engine’s operation, as the rotation of the crankshaft ultimately drives the vehicle's wheels.

In contrast, the camshaft is responsible for controlling the timing of the opening and closing of the engine’s valves. The flywheel stores rotational energy and helps maintain smooth operation but does not connect directly to the pistons. The pushrod is part of a mechanism used in overhead valve engines to actuate the valves and does not play a role in connecting the crankshaft to the pistons. Thus, the connecting rod is essential for ensuring the proper functioning and efficiency of the engine's overall operation.