The connecting rod is considered to be what type of part in an engine?

The connecting rod is classified as a highly stressed part that transmits combustion forces because it serves a critical role in the engine's operation. It connects the piston to the crankshaft, and during the engine cycle, it must endure significant forces as the combustion process occurs. The force generated from the combustion of fuel and air pushes the piston down, and this force is transferred through the connecting rod to the crankshaft, which converts the linear motion of the piston into rotational motion.

This transmission of forces means that the connecting rod is subject to high levels of stress, particularly during the power stroke, making its material and design crucial for the durability and performance of the engine. The connecting rod must be built to withstand not only the high compressive forces but also the high tensile and bending stresses that occur during the engine's operation. The failure of a connecting rod can lead to catastrophic engine damage, highlighting its importance as a highly loaded component in the engine assembly.