Component Working Characteristics of Diesel Generator Sets

In the design and manufacturing process of diesel generator sets, materials must be selected based on the working nature and characteristics of the components. Improper material selection, non-compliant material quality, or use of inappropriate substitutes are primary causes of component issues such as wear, deformation, fatigue damage, cracking, and aging.

The properties of materials and oils used in diesel generator internal combustion engines can be summarized into three aspects: physical, chemical, and mechanical properties. Many engine failures result from external factors acting through these properties. For example, metal materials may deform, crack, or even fracture under excessive force; high temperatures cause oxidation; repeated loads lead to fatigue damage; non-metallic materials undergo aging; acidic substances in oils corrode metals and cause oil deterioration.

Working Characteristics of Diesel Generator Components

Systems and components of diesel generator internal combustion engines have distinct structural features. During operation, external factors often act through these features to cause component failures. For instance, due to the structural design of engine water jackets, cooling water easily forms scale on the outer wall of cylinder liners under high-temperature conditions, reducing cooling efficiency.

Operational Traits of Diesel Generator Assemblies

Wear from friction: Components in direct contact with relative motion wear due to friction. For example, piston rings contact the cylinder directly and perform high-speed reciprocating linear motion, leading to cylinder wear.

Thermal stress effects: Components with drastic temperature changes during operation may deform or crack due to thermal stress. For example, during engine operation, the cylinder block and cylinder head are subjected to high temperatures, causing internal stress redistribution to reach a new equilibrium, resulting in planar warping deformation of the cylinder block and head.

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