Diesel Engine Energy Saving
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Improving the temperature of diesel engine cooling water is essential for optimal performance. In agricultural diesel engines, the cooling water temperature is typically below 45°C, which leads to incomplete combustion of diesel fuel. This results in higher oil viscosity, increased operating resistance, and ultimately, higher fuel consumption. To address this, it's important to raise the temperature of the cooling water to ensure more efficient fuel burning and better engine operation.
As an example, the 195-type diesel engine requires the best fuel injection timing to be between 16° and 20°. Over time, wear and tear can cause the fuel injection timing to decrease, leading to late fuel delivery and increased fuel consumption. Therefore, maintaining the correct fuel injection angle is crucial for efficiency and performance.
To prevent oil leaks, it’s important to check the connections of the oil pipes. Leaks often occur due to uneven joints or damaged gaskets. One effective solution is to apply valve paint on a flat glass plate and press the gasket against it to flatten and correct the connection. This helps maintain a tight seal and prevents oil leakage.
An additional improvement is the installation of a diesel recovery system. By using a plastic tube to connect the return pipe from the nozzle to the air core screw, excess oil can be redirected back into the fuel tank, reducing waste and improving fuel efficiency.
More than half of the diesel engine failures are caused by impurities in the fuel before it is fully used. To solve this, it's recommended to let the diesel settle for 2–4 days before use, allowing 98% of impurities to settle at the bottom. If purchasing on the spot, placing two layers of silk or toilet paper over the fuel filter screen can also help trap contaminants.
The common practice of "using a big engine with a small pump" is inefficient and leads to unnecessary energy waste. A better approach is to increase the number of pulleys on the diesel engine, allowing the pump to operate at a higher speed while the engine runs at a lower RPM. This increases flow rate and lift, achieving better energy efficiency.
Lastly, adjusting the fuel injection pressure of the 195 diesel engine is vital. The ideal injection pressure is 120 ± 5 kg/cm². If the pressure drops below 100 kg/cm², fuel consumption can increase by 10–20 g/kWh. This pressure can be checked and adjusted using a comparison method, ensuring proper fuel atomization and combustion efficiency.