Piston for Komatsu 4D105

The piston 6136-31-2112 serves as a core component within the Komatsu 4D105 engine assembly. It functions by receiving the force generated during the combustion process and transferring that energy into linear motion, which is subsequently converted into rotational force by the crankshaft. This component is engineered to maintain a precise fit within the cylinder liner, ensuring that the combustion chamber remains sealed during the power stroke. By housing the piston rings, it manages the compression levels and regulates oil control along the cylinder walls.

This part is compatible with the Komatsu 4D105 engine, which is utilized across various Komatsu heavy machinery applications. It is manufactured to meet the dimensional requirements of the engine block to ensure proper clearance and operation. The design includes specific ring grooves to facilitate the installation of piston rings, which are necessary for maintaining the integrity of the combustion cycle and preventing gas blow-by.

In internal combustion engines, the piston acts as the primary moving boundary of the combustion chamber. It must withstand the repetitive thermal and mechanical stresses encountered during engine operation. A properly functioning piston ensures that the engine maintains its intended compression ratio, which is critical for power output and efficient fuel combustion.