Low Temperature Impact for Diesel Generator Sets

Diesel Generator set use environment temperature and water tank temperature is too low, will have a great impact on diesel Generator sets
   (1) Accelerate part wear and reduce output power
    When the temperature of the cooling water of the water tank is too low, the temperature of the lubricating oil decreases, the viscosity of the oil is relatively high at low temperatures, and the fluidity is deteriorated, which not only increases the wear of parts of the diesel Generator Set, but also increases the resistance of the moving parts. As the mechanical power loss increases, the output power of the diesel generator set decreases.
   (2) If the ambient temperature is too low, the cylinder temperature will be very low, and the water vapor in the cylinder will condense on the cylinder wall. The sulfur dioxide generated during the combustion of the diesel generator will meet the water condensed on the cylinder wall and will change. The strong etchant adheres to the cylinder wall, so the surface of the cylinder wall is strongly corroded, causing the surface metal structure to be loose. When the cylinder liner and the piston ring are frictionally scraped together, the surface of the corrosion layer is loose. The metal wears off quickly, or there are pits and pits on the working surface of the cylinder liner.
   (3) Increased heat loss and increased fuel consumption
    When the diesel generator set is working at low temperature, the cooling water takes away a lot of heat energy in the cylinder, which increases the heat loss; the mixture gas can not form and burn well, and the fuel consumption will increase by 8%-10%; When the fuel enters the cylinder, it will flush the lubricating oil film on the cylinder wall and penetrate into the crankcase, which will increase the wear of the parts, dilute the lubricating oil in the oil sump, increase fuel consumption and reduce power output.
   (4) The combustion deteriorates and the performance of the whole machine deteriorates.
    Some parts that are thermally expanded do not expand to their proper size due to the low temperature, which affects the overall working performance, such as piston and cylinder clearance.
Too big, the seal is not good; the valve clearance is too large and is affected by the rocker arm, and the diesel generator is not easy to start. Compressed gas when working on a diesel engine
The high temperature is the necessary condition to ensure the ignition of the fuel. When the temperature of the cylinder, piston and other parts is lowered, the temperature at the end of the compression will decrease, the ignition delay and the combustion conditions will deteriorate, resulting in incomplete combustion of the fuel, rough operation of the diesel generator and smoke from the exhaust. .
    3, the use of precautions
(1) Always check whether the water tank is short of water or water leakage, and whether the fan tape is too loose; the thermostat cannot be arbitrarily removed; the opening of the windshield and louver of the water tank should be adjusted at any time according to the working temperature of the diesel generator.
   (2) After the diesel generator is started, it should be operated with medium and small throttles so that the water temperature can reach 40 °C or higher before the machine can start. When the temperature reaches 60 °C, the machine can work with load; avoid the diesel generator for a long time overload. jobs.
   (3) In the cold season, in order to facilitate the start of the diesel generator, hot water of about 80 °C may be added to the cooling system, or the oil of the oil pan may be warmed up and then started. At the end of the work, after the temperature of the diesel generator is lowered to 50-60 ° C, the drain valves of the radiator and the cylinder block are all opened to allow the water in the cooling system to be drained.
   (4) When the diesel generator is overheated due to lack of water, cold water should not be added immediately. The diesel generator should be operated at low speed first, and then added after the water temperature drops. When the temporary parking is required, the diesel generator can be used as a small throttle. Idle speed, but not too long.
   (5) The cooling system should use clean soft water. The pH value of the cooling water should be controlled between 8 and 11 to minimize the fouling of the cooling system to prevent the cooling effect. In the use, the inside of the cooling system should be cleaned regularly with a chemical agent to ensure a good cooling cycle and normal heat dissipation.