The hazards of low water temperature in diesel generator mainly include the following aspects:
1. Reduced combustion efficiency: Low water temperature can lead to deterioration of diesel combustion conditions in the cylinder, poor fuel atomization, increased combustion period after ignition, rough engine operation, reduced power, and decreased fuel economy.
2. Increased mechanical wear: The water vapor after combustion is prone to condense on the cylinder wall, causing metal corrosion; Unburned diesel may dilute engine oil and deteriorate lubrication conditions; The gum formed by incomplete fuel combustion can trap the piston rings and valves, resulting in a decrease in cylinder pressure at the end of compression.
3. Poor lubrication effect: The low water temperature leads to a decrease in oil temperature, thickening of the oil, decreased fluidity, insufficient oil supply from the oil pump, reduced clearance between the crankshaft bearings, and poor lubrication.
4. Impact on start-up performance: Low water temperature can affect the start-up performance of the unit, increase start-up time, and increase start-up load.
5. Damage to cooling system: In winter, low ambient temperature combined with low unit water temperature may cause the coolant to freeze, damaging the cooling system and increasing the risk of mechanical failure.
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