What Are The Structures of The Engine Cylinder Block?

The cylinder block is one of the core components of the engine. It plays a key role in the lubrication, temperature control, and stability of the engine. Knowing the structure and type of the engine block can help to better play the role of the engine in daily use.

The engine block structure

1. Body group: The body group includes the cylinder head, cylinder block, and oil pan. Some engines divide the cylinder block into upper and lower parts, the upper part is called the cylinder block, and the lower part is the crankcase. The role of the body group is to serve as the assembly base of the various mechanisms and systems of the engine.

2. Components of crankshaft connecting rod mechanism, valve train, supply system, cooling system, and lubrication system. The cylinder head and the inner wall of the cylinder block for sale together form a part of the combustion chamber, which is a part that withstands high temperature and high pressure.

3. Crank linkage mechanism includes piston, connecting rod, crankshaft with flywheel, etc. It is a part that withstands high temperature and high pressure. It is a mechanism that converts the linear reciprocating motion of the piston into the rotary motion of the crankshaft and outputs power.

The cylinder block types

1. General type cylinder block: This type of cylinder block is characterized by the fact that the installation plane of the oil pan is at the same height as the crankshaft rotation center. Advantages: small body height, lightweight, compact structure, easy processing, and easy disassembly. but its Disadvantages: poor rigidity and strength, poor sealing at the front and rear end of the crankshaft, and are mostly used for small and medium-sized engines.

2. Gantry cylinder block: This type of cylinder block is characterized by the fact that the installation plane of the oil pan is lower than the rotation center of the crankshaft. Advantages: good strength and rigidity, can withstand large mechanical loads, simple and reliable sealing, and convenient maintenance. Disadvantage: poor in manufacturability and difficult to process.

3. Tunnel-type cylinder block: The main bearing hole of the crankshaft of this type of cylinder block is an integral type, using rolling bearings, the main bearing hole is relatively large, and the crankshaft is loaded from the rear of the cylinder block. The advantages: compact structure, good rigidity, and strength. The disadvantages: high machining accuracy requirements, poor workmanship, and inconvenient disassembly and assembly of the crankshaft.