Introduction to cylinder maintenance methods for L28/32 diesel engine accessories

After installing a new ring or replacing a diesel engine cylinder liner, it is necessary to run in according to the instructions. Strictly implement the rotational speed (load) and time of running-in, and do not act too hastily. Increase the cylinder oil volume appropriately and use pure mineral oil. Pay attention to monitoring the discharge temperature and cooling water temperature to timely detect possible faults during running-in and ensure the quality of running-in.

The grade and quantity of cylinder oil for marine diesel engine accessories should meet the requirements of the manual, and the misconception that more cylinder oil is better than less cylinder oil should be avoided. Excessive cylinder oil may cause carbon deposition and waste cylinder oil, while too little can lead to poor lubrication. The alkalinity of the cylinder oil shall be determined according to the fuel condition. The alkalinity shall meet the requirements to avoid low-temperature corrosion of the cylinder piston ring and extend the service life of the ring.

The appropriate coolant temperature should ensure that the average working temperature of the first ring is below 200 ℃, and that the cylinder oil is evenly distributed on the cylinder wall to reduce friction and wear, prevent carbon deposition and low-temperature corrosion, and prevent ring sticking and breakage.

Regularly perform cylinder maintenance, keep maintenance records, and analyze the wear and tear rate of the ring based on the parameters of each cylinder. The cause of excessive wear and tear must be identified and resolved promptly. A wear monitoring system is set up to monitor and diagnose the wear of piston ring based on the number, size, morphology and composition of wear particles in the lubricating oil generated during the operation of the diesel engine.