What does the connecting rod cap refer to?

The connecting rod cap specifically refers to the lower half of the large end of the connecting rod. In a reciprocating engine, the connecting rod connects the piston to the crankshaft. The large end of the connecting rod has two parts: the rod itself and the cap. The cap is crucial because it houses the bearing, which allows smooth rotation of the crankshaft while supporting the connecting rod. Proper assembly of the cap and rod is vital for maintaining the integrity and functionality of the engine, as it experiences significant forces during operation. The design ensures that the upper portion of the rod and the cap can be tightly fastened together, providing stability and strength. Understanding the role of the connecting rod cap is essential for engine assembly, repair, and maintenance.