Marine Diesel Engine 415v

The marine diesel engine 415V are easy to start, cost-effective and perform excellently. They are widely used for ship propulsion power. Currently, the marine diesel engines still play an important role and have become the core power source for civilian ships, small and medium-sized naval vessels, and conventional submarines.Today, marine diesel engines are the main power source for civil ships, small and medium-sized naval vessels, and conventional submarines.

Classified by their role on ships, marine diesel engines fall into two types: main engines and auxiliary engines. Main engines serve as the ship's propulsion power, while auxiliary engines drive generators, air compressors, water pumps, etc.

▼ The possible problems we may met during the operation of marine diesel engine bearing burnout:

--Not using lubricating oil according to seasons. Different seasons require different grades of lubricating oil. Some diesel engines burn out bearings because summer uses low-viscosity lubricating oil, which fails to form an oil film on the bearing contact surface.

--Contaminated lubricating oil. Adding dirty lubricating oil into the engine can block the oil circuit and cause bearing burnout.

--Neglecting instrument observation. The normal oil pressure of a marine diesel engine during operation should be between (0.15-0.25) MPa, and not less than 0.5 MPa at idle speed. Many operators rarely check the oil pressure gauge, so they cannot detect potential faults in time.

--Improper oil addition. Too much oil can cause the weichai diesel engine to burn oil easily during operation, forming carbon deposits. Too little oil can lead to bearing burnout and shaft seizure due to poor lubrication. Generally, the oil level between the upper and lower marks on the dipstick is most appropriate.

---Long-term overload operation leading to bearing burnout. Due to long-term overload, the Cummins marine diesel engine has high temperature and low speed, increasing the bearing load. The oil pump's oil supply decreases accordingly. In addition, the oil's viscosity decreases at high temperatures, making bearing burnout more likely.

---Improper fit clearance between shaft and bearing. If the clearance is too small, oil cannot easily enter to form an oil film. If too large, oil easily leaks, making it hard to form an oil film. Therefore, during repair and assembly, the bearing clearance must be within the standard range.

During marine diesel engine operation, "regular maintenance as per the manual" is far from simple "procedure-following". It is systematic management that considers equipment working conditions, usage frequency and environmental features. Only by accurately implementing every maintenance detail can faults be fundamentally reduced and only we could make sure the diesel engine has a long service life.