10 Ways to Reduce Diesel Engine Fuel Consumption
Time:2025-09-16
Views:8
If your compressor is powered by diesel, careful maintenance of the mobile diesel engine is extremely critical. Timely troubleshooting and solving problems can effectively reduce the fuel consumption of mobile diesel engines. If you want to make diesel engines operate economically, you can refer to the following points:
- Maintain the optimal valve clearance: This is the key to reducing the fuel consumption of diesel engines. Improper valve clearance will cause insufficient air intake and incomplete exhaust, reduce the excess air coefficient of the engine, and make fuel combustion insufficient. It will not only cause problems such as insufficient power and black smoke, but also greatly increase fuel consumption. Therefore, the valve clearance should be checked regularly.
- Ensure the optimal fuel supply advance angle: Take the 195-type mobile diesel engine as an example, the optimal fuel supply advance angle is 16°-20°. After the engine has been used for a long time, the wear of the fuel injection pump plunger pair and the transmission mechanism will cause the fuel supply advance angle to become smaller and the fuel supply time to lag, thereby increasing fuel consumption. Therefore, it is necessary to ensure that the fuel supply advance angle is at the optimal value.
- Eliminate oil leakage: Even slight oil leakage or seepage in the fuel system will cause a lot of fuel waste in the long run.
- Ensure good condition of cylinder components: Wear of cylinder components will reduce the cylinder compression pressure and worsen the fuel combustion conditions, resulting in a significant increase in fuel consumption. Therefore, it is necessary to ensure that the cylinder components are in the best working condition.
- Change the "big horse pulls small cart" operation mode: Many equipment have the problem of energy waste of "large model and small load". The power can be increased and energy can be saved by increasing the wheel size of the mobile diesel engine and increasing the equipment speed when the engine is running at a low speed.
- Adjust the injection pressure of the fuel injector: Take the 195-type mobile diesel engine as an example, the standard injection pressure of its fuel injector is (12.0±0.05) MPa. When the injection pressure is lower than 10.0 MPa, the fuel consumption will increase by 10-20 grams/(kW·h). The injection pressure of the fuel injector can be checked and adjusted by the comparison method.
- Regularly maintain the air filter: A dirty air filter will cause insufficient air intake, and the consequences are similar to improper valve clearance, which will increase fuel consumption, reduce power and cause black smoke. Therefore, it should be checked and maintained regularly.
- Avoid full-load high-speed operation: Diesel engines have an economic operating range. The rated speed is marked on the equipment nameplate, and the optimal economic speed is about 85% of the rated speed. At this time, the energy consumption per unit time is the lowest. The green area of the engine tachometer is usually the economic operation range, and it should be
operated in this range as much as possible. - Control the cooling water temperature: Too high or too low cooling water temperature will seriously damage the diesel engine. If the water temperature is too low, the actual clearance of each moving part of the engine will deviate greatly from the design clearance, increase the running resistance, and accelerate wear (when the water temperature is lower than 30°C, the wear amount is more than 5 times higher than normal, and the fuel consumption increases by 15%); if the water temperature is too high, it will cause the engine to overheat, leading to problems such as reduced oil pressure, piston cylinder sticking, and reduced power. It is recommended to control the water temperature at 80-90°C.
- Install a preheating device: When using a diesel engine in winter, preheating through the engine exhaust pipe can increase the diesel temperature and reduce viscosity, so that the diesel can be atomized and burned better, which can reduce fuel consumption by 5%-10%. The optimal temperature range for diesel preheating is 66-75°C.
And AIRSTONE‘s Diesel Engine Screw Air Compressor ( Click )takes full account of the efficient and energy-saving operation of diesel engines in design and configuration, which can help you better manage the fuel consumption of diesel engines.
This air compressor is equipped with a screw air end with a patented rotor profile, which has high efficiency, adopts a heavy-duty design and direct drive, adheres to the concept of energy saving, and has a novel design. The engine is equipped with heavy-duty special diesel engines such as Yuchai and Cummins, which can achieve the best combustion state in the entire operating range of the engine. The product has higher reliability, stronger power, and better fuel economy.
In terms of air filtration, the multiple air filtration system can effectively resist the impact of harsh dust environments on the engine. The precision filter layer of the main air filter can filter out residual dust, and the standby design of the safety filter element allows the machine to perform air filter maintenance without shutting down, ensuring the safe operation of the machine. The clean compressed air is also conducive to the safe operation of supporting equipment.
The cooling system adopts the design of independent water cooler, air cooler and large-diameter fan, which can adapt to severe cold and hot climates. The triple oil-air separation system can reduce the impact of the oil filling amount in the separator on the oil content in the compressed air, and always keep the oil content in the compressed air below 3ppm. The clean compressed air helps the safe operation of supporting equipment.
A low-temperature start system is also optional. The water pump of the fuel heater pumps the coolant in the engine body to the heat exchanger, and the oil pump pumps the fuel in the fuel tank to the burner for combustion. Through the continuous circulation of heat, the temperature of the lubricating oil of the whole machine is continuously increased to ensure the starting performance of the diesel engine in severe cold and high-altitude environments.
Its working pressure is 8 - 30 bar (116 - 435 psi), free air delivery is 185 - 1107 cfm (5 - 31 m³/min), and working power is 41 - 295 kw (55 - 394 hp), which can meet the needs of various working conditions.
AIRSTONE was established in 2003. For 23 years, it has always adhered to the principles of safety and environmental protection, and is committed to researching and developing compressors and related equipment suitable for special working conditions in Northwest China. It specializes in the design and after-sales service of various equipment.
Many customers speak highly of AIRSTONE‘s products, such as "The screw air compressor purchased from AIRSTONE is of very good quality" and "The equipment and services provided by AIRSTONE are very good, and the cooperation experience is very pleasant". AIRSTONE‘s products effectively cover many construction fields in Xinjiang, such as mining, water conservancy, construction, roads, airports, petroleum, and chemical industry, and its service scope covers the world.
Uphold the integrity of quality and pursue mutually beneficial cooperation! If you want to know more about products and industry-related information, please contact us.
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