Six Methods for Energy Saving of Agricultural Diesel Engines

Six Methods for Energy Saving of Agricultural Diesel Engines

First, it's important to raise the temperature of the diesel engine's cooling water. In agricultural diesel engines, the coolant temperature is often below 45°C, which can lead to incomplete combustion and poor engine performance. Additionally, cold oil has higher viscosity, increasing internal resistance and fuel consumption. To improve efficiency, the cooling water temperature should be increased before starting the engine. Second, ensuring the correct fuel injection timing is crucial. For the 195 diesel engine, the optimal fuel advance angle is between 16° and 20°. Over time, wear on the plunger and injection pump components can cause the timing to become delayed, resulting in late fuel delivery and increased fuel consumption. Regular checks and adjustments are necessary to maintain the proper advance angle. Third, preventing oil leaks is essential for maintaining engine efficiency. Oil leaks often occur due to uneven joints or damaged gaskets. A simple solution is to apply valve paint on a glass plate to flatten the gasket surface, and calibrate the tubing connections. Installing a diesel recovery system can also help—replacing the hollow screw with a bicycle spoke cap or using a plastic tube to redirect return oil back into the tank. Fourth, many engine malfunctions stem from poor fuel quality. Before use, it’s advisable to let diesel fuel settle for 2–4 days to allow impurities to settle at the bottom. This process can remove up to 98% of contaminants. If purchasing fuel on the spot, placing two layers of silk or toilet paper over the fuel strainer can further filter out unwanted particles. Fifth, avoiding the "big horse-drawn car" practice is key to saving energy. Using large engines with small pumps is inefficient and wastes fuel. A better approach is to increase the number of pulleys on the diesel engine, allowing the pump to operate at a higher speed even when the engine runs slower. This improves flow and lift, ultimately reducing fuel consumption. Lastly, adjusting the injection pressure of the nozzle is vital. The standard injection pressure for the 195 diesel engine is 120 ± 5 kg/cm². If the pressure drops below 100 kg/cm², fuel consumption can increase by 10–20 grams per kWh. This pressure can be checked and adjusted directly using a comparison method, ensuring optimal engine performance.

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