What is a cylinder trunnion?

Cylinder trunnion is an important part of internal combustion engine, it carries the piston in the cylinder up and down reciprocating movement. The role, structure and application of the cylinder trunnion in internal combustion engines will be described in detail below.

First of all, the main role of the cylinder trunnion is to connect the piston with the crankshaft, achieve the up and down movement of the piston in the cylinder, and transfer the pressure generated by the piston to the crankshaft. Through the rotation of the crankshaft, the linear motion generated by the piston movement is converted into the rotational motion of the output shaft, thus driving the working process of the internal combustion engine.

Secondly, the trunnons are usually made of high-strength alloy steel materials to ensure that they can withstand large forces and vibrations in high temperature and high pressure environments. In the structure, the cylinder trunnion is generally composed of a journal, trunnion support and bearing sleeve. The journal is the part connected to the crankshaft that needs a smooth finish to reduce friction and wear. The trunnion bracket is connected to the cylinder and the journal to support and fix it. The bearing sleeve provides an accurate fit between the cylinder trunnion and the crankshaft, while ensuring good lubrication and reducing wear.

Finally, cylinder trunnons are widely used in various types of internal combustion engines, including automotive engines, motorcycle engines, Marine engines, etc. They play an important role in driving vehicles, generating electricity, navigation and other fields. Depending on the type of internal combustion engine and the needs, there will be some differences in the design and manufacture of the cylinder trunnion, but its basic function is similar, that is, to achieve the up and down movement of the piston and transfer pressure to the crankshaft.

In summary, the cylinder trunnion is the key component connecting the piston and the crankshaft in the internal combustion engine, which carries the movement of the piston and the important task of sealing the cylinder. Through reasonable structural design and selection of high-strength materials, the cylinder trunnion has good durability and reliability under harsh working conditions. With the development and innovation of internal combustion engine technology, cylinder trunnons will continue to play an important role in various fields and promote the efficient and reliable operation of internal combustion engines.