The engine is mainly composed of several mechanisms and systems, and the functions of each component are briefly explained

The engine body is the skeleton of the engine, and the installation foundation of the engine mechanism and system.

The engine structure, with all the main parts and accessories of the engine mounted inside and outside, bears various loads.Therefore, the body must have sufficient strength and stiffness.The block is mainly composed of cylinder block, cylinder sleeve, cylinder cover and cylinder cushion.

Cylinder block

The cylinder block and crankcase of a water-cooled engine are often cast together.

The engine

It is called cylinder block -- crankcase, also known as cylinder block.The cylinder body is generally cast with gray cast iron. The cylinder cavity on the upper part of the cylinder body is called the cylinder, the lower half is the crankcase supporting the crankshaft, and the inner cavity is the space for crankshaft movement.There are many stiffeners, cooling water jackets and lubricating oil duct cast inside the cylinder.

The cylinder block should have sufficient strength and stiffness. According to the location of the cylinder block and oil sump mounting plane, the cylinder block is usually divided into the following three forms.

1. General cylinder block: it is characterized by the oil sump mounting plane and crankshaft rotating center at the same height.The advantages of this cylinder block are small height, light weight, compact structure, easy to process, easy to disassemble and assemble crankshaft;However, the disadvantages are poor stiffness and strength

2. Gantry cylinder block: it is characterized by that the oil sump mounting plane is lower than the rotation center of the crankshaft.

It has the advantages of good strength and stiffness and can bear large mechanical loads.However, its disadvantages are poor technology, heavy structure and difficult processing.

3. Tunnel-type cylinder: the main bearing holes of the crankshaft of the cylinder block in this form are integral and adopt rolling bearings. The main bearing holes are large and the crankshaft is loaded from the rear of the cylinder block.Its advantages are compact structure, good stiffness and strength, but its disadvantages are high processing precision requirements, poor technology, difficult crankshaft disassembly and assembly.

Zhenjiang haishun Marine equipment co., LTD. Is a professional production and sales of Marine diesel engine parts at home and abroad operating companies, the company has been applied for the university of technology internal combustion engine research institute professor Chen daochun as a technical director and consultant, quality for survival, reputation for development.

Our company mainly supplies large vessels in China: zhonghai group, cosco group, east China sea rescue bureau of the ministry of communications, south China sea rescue bureau, north sea rescue and fishing bureau, Marine bureau, etc., and Yangtze river shipping system units, providing high-quality and convenient Marine diesel engine, Marine diesel engine parts, diesel engine parts.