Diesel engine fuel usage techniques encompass multiple aspects from fuel addition to system maintenance, with the core focus on ensuring fuel cleanliness, complete combustion, and maintaining efficient system operation. Below are key techniques compiled from publicly available resources:
Fuel Addition and Handling:
Clean Fuel Tank and Filler Neck: Before adding diesel, always inspect the fuel tank and filler neck for cleanliness. Prevent contaminants, moisture, or foreign objects from entering the fuel system, which could clog injectors or accelerate component wear.
Use Proper Grade Diesel: Strictly select diesel grades according to engine specifications (e.g., No. 0, -10 diesel). Do not mix different grades, as this may impair combustion efficiency or damage the engine.
Settling and Filtering: Newly purchased diesel should be allowed to settle for 2-4 days, naturally separating approximately 98% of impurities. For immediate use, install two layers of silk cloth or tissue paper over the fuel tank's filler filter for basic filtration.
Slow Filling and Sunlight Protection: Fuel should be added slowly to prevent air bubbles that impair combustion. Additionally, diesel should be shielded from prolonged direct sunlight to prevent photo-oxidation reactions that degrade fuel quality.
Optimizing Operation and Combustion Efficiency:
Maintain Load Within Optimal Range: Avoid overloading. Keep generator or engine load between 50% and 80% for peak fuel combustion efficiency and lowest consumption.
Increase Coolant Temperature: Moderately raising coolant temperature elevates engine operating temperature, promoting more complete diesel combustion. This also reduces engine oil viscosity, lowering friction resistance and achieving fuel savings.
Adjust Fuel Injection Parameters:
Injection timing (fuel supply angle) and injection pressure are critical. Appropriately advancing injection timing improves combustion efficiency, but excessive advance may cause knocking. Increasing injection pressure enhances fuel atomization for more complete mixing, though excessively high pressure may cause leaks.
These adjustments require professional diagnostic tools and adherence to manufacturer technical specifications. Avoid unauthorized excessive modifications.
