Cylinder diesel generator failure analysis

Nov. 15, 2011 - PRLog -- Cylinder diesel generator failure is on the surface of the cylinder and piston rings appear along the direction of motion of the piston-like stripes with color damage. Cylinder diesel generator failure, the cylinder liner wear is very severe, up to normal wear and tear of dozens or even hundreds of times.

Cylinder diesel generator failure phenomenon

1 cylinder diesel generator set after the occurrence of the external characteristics of the sound changes, exhaust black smoke.

2 pistons, piston rings and cylinder liner working surface is damaged, the gas seal failure, oil consumption and channeling gas increased rapidly, so the engine can not operate normally, even in a very short period of time, due to the piston, piston ring and cylinder liner killed while parking.

Cylinder diesel generator malfunction

1 is actually the main cylinder piston, piston ring and cylinder liner surface due to the high temperatures and "welding" strain. That the piston and cylinder liner oil film between the interrupt is generated as dry friction, the friction heat caused by hot melt adhesive metal microstructure and tensile near the metal particle.

2 cylinder diesel generator set of the most fundamental reason is that film disruption. According to the requirements of the gas sealing, piston ring and cylinder liner should be as small as possible the gap between, which makes them very unfavorable lubrication conditions. When the overload due to exposure to the surface, the surface of the cylinder liner and piston ring face due to direct contact between the violent friction, resulting in a lot of friction heat, so that a sharp rise in the temperature of the working surface, the consequence of two adhesion and friction welding surface cause injury.

Thus, the oil supply in poor condition, gas channeling serious parts too large contact stress damage film, the main cause of the cylinder. In addition to lubrication, with the gap, parts manufacturing quality, improper use may cause cylinder diesel generator failure, specifically the following points:

1 with the gap between the piston and cylinder liner is too small, or with a load of work before the official has not been a good run.
(2) poor lubrication, such as the gap is small, thin oil or oil in the assembly, not painted.
3 engine overheating.
4 piston assembly fitted body too dirty or dead.
5 piston and piston rings of poor quality.

From the use of perspective, but also pay attention to avoid a sudden increase in load or an emergency stop, preferably before starting rotation with a crank to crank a few times, so that the friction surface to maintain a certain lubricants.

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