Piston and Piston Ring
The piston in the 4-stroke diesel engine produces reciprocating movement. It connects with the crankshaft via a connecting rod. It transfers its motion to the crankshaft via a connecting rod. The piston moves downwards and upwards inside the cylinder of the engine.
When the piston moves up, it sucks the air inside the cylinder, while it compresses the air when it moves downward. Due to this piston movement, the temperature and pressure of the air-fuel mixture inside the cylinder increase.
The engine piston has a complex construction with a steel crown and a ductile cast iron skirt. This skirt uses pressure lubrication to ensure oil delivery to the cylinder liner underneath each working situation. Oil feds toward the cooling duct at the top of the piston via the connecting rods. All piston rings are chrome-plated to resist wear. The piston ring contains a spring-compatible oil control ring and 2 guiding compression rings. The piston ring groove has excellent wear resistance and is stabilized.
Cylinder Linear
This component of the four-stroke engine has a high, rigid collar to lessen deformation. This linear material is a gray cast iron alloy with high strength and brilliant wear resistance. Precisely placed vertical cooling water holes ensure precise temperature control. To avoid the bore polishing risk, the linear equips with a protective polishing ring.
The space among the cylinder liner and the cylinder block seals with a double O-ring. The upper end of the linear equips by an anti-polish ring that prevents the internal bores from being polished and reduces the consumption of lubricating oil.
Big end bearings and Main Bearings
The big end bearing is a lead bronze lining with tri-metal steel backs and a thick, smooth-running layer. The bi-metal bearing, as well as tri-metal bearing are depleted as the main bearings.
Connecting Rod
This component of the 4-stroke diesel engine connects the engine crankshaft and piston. It is made of Alloy steel and forged in one piece. A connecting rod is machined in a circular cross-section. The lower side of the connecting rod splits in the horizontal direction so that the connecting rod and the piston can be removed from the cylinder liner. The gudgeon pin bearing consists of tri-metal.
All bolts of the connecting rod are tightened hydraulically. The holes in the connecting rod direct oil to the pistons and gudgeon pin bearing. This component of the engine transfers the motion of the piston to the crankshaft, which further moves to the vehicle’s wheel.
Crankshaft
The crankshaft transforms the reciprocating motion of the engine piston into rotary motion. It is an essential component for all the engines. This part transfers final power in the form of kinetic energy. It is made in the form of one piece. Connecting rod makes a link between the crankshaft and piston of the engine.