C9 Engine Cylinder Block For Excavator E330C E330D E336D E336D2 325 - 3915

Specification

Description

The cylinder block is one of the most important designs in the engine. Just as head, the cylinder block is also designed to achieve certain performance parameters. It must sustain very high pressures and temperatures running above 600 degrees Celsius. They employ precision machining to give mirror finish to cylinder surfaces. This includes accurate grinding and honing processes.

The cylinder block casting incorporates many unique cast-in internal features which reduce machining costs, including: high pressure oil passages, oil drain-backs, the crankcase air passages, and coolant jackets and channels. On the exterior of the block there are numerous ribs, pads, channels, and holes for strengthening, weight reduction, and accessory attachment.

Engine block components

1. Cylinder blocks. A cylinder block is the structure which contains the cylinder, plus any cylinder sleeves and coolant passages.

2. Oil passages

3. Crankcase. An engine where all the cylinders share a common block is called a monobloc engine.

What are the main features of cylinder block?

1. Cylinder head covers: the cylinder head is mounted on top of the engine block with long bolts.

2. Cylinder head

3. Engine block: an engine block can be a single or split in two, upper and lower block. It encloses the piston, connecting rod, etc. as they work in it.

4.Oil pan

What are the materials used for cylinder blocks?

Actually, manufacturers use grey cast iron for cylinder blocks while sometimes adding nickel and chromium. Nowadays, they also use aluminum to reduce weight and improve performance. However, the aluminum blocks use cast-iron or steel sleeves on cylinders. Most engines prefer cast-iron for cylinder walls as it has lower wearing qualities. Some small engines use chromium for plating cylinder walls to reduce wear & increase service life.

Manufacturers are conducting tests on silicon-aluminum alloys for their use in cylinder blocks. These alloys have a low coefficient of thermal expansion and high wear resistance. Besides, aluminum alloy blocks maintain more uniformity of temperature because of their thermal conductivity. Often, manufacturers use the block, head, and crankcase made of aluminum alloy. Grey cast-iron for the block is the same that is used for the head. However, aluminum alloys are usually quite different. Cast iron is still used for heavy applications such as commercial engines, rail- engines and marine engines.