The failure of diesel engines, regardless of their size, reduces their efficiency and increases fuel consumption. Therefore, careful maintenance of diesel engines, which should be repaired without delay, is one of the effective ways to reduce diesel fuel consumption (fuel consumption and oil consumption). For diesel fuel to operate, it is necessary to do the following。
1) one of the basic elements of saving diesel fuel is maintaining the optimal state of the gas gap between the gas chambers. If the gas-gate gap of the diesel engine is incorrect, it leads to inadequate ingestion and impregnated exhaust, inevitably leading to a low excess air coefficient of the diesel engine, resulting in incomplete fuel combustion. As a result, not only does it lead to operational failures such as low-powered diesel engines and black smoke, but it also leads to a significant increase in fuel consumption. It is therefore necessary to periodically check the air gap。
2) keep the best oil supply in advance. For example, the optimal angle for the advance angle of the diesel-type 195 is 16° ~ 20°. When diesel engines are used for a certain period of time, the wear and tear of the plume fittings and the jet pumps reduces the supply of oil at an early angle, resulting in late fuel supply times and increased fuel consumption, so that the supply at an early angle should be guaranteed。
3) avoid oil spills from diesel engines. Oil spills or seepages in fuel systems, although they may not be serious, may also result in a considerable loss of fuel over time。
4) ensure that tank components are always in optimal state of compatible operation. If the gas tank component is worn down and the pressure on the tank is reduced, it will inevitably lead to a poor fuel combustion environment, which will result in a marked increase in fuel consumption。
5) change the “grandmara minivan” approach. Many equipment is overloaded with “large machines with small loads”, a waste of energy. Improved approach: increased diesel belts, as appropriate, to achieve increased power and energy efficiency by increasing the speed of equipment when diesel engines are operating at reduced speed。
6) adjust the oil spray pressure of the jet. For example, oil spray pressure (12. 0 + 0. 05) mpa for a diesel jet of 195, when the oil spray pressure is below 10. 0 mpa, fuel consumption will increase by 10-20g/(kw. H), which can be compared to the pressure on the jet pump。
7) periodic inspection and maintenance of air cores. If the air filter core is too dirty, it will result in insufficient gas intake, with the same consequences as the gas gap is incorrect, leading to increased consumption of diesel oil, insufficient power and black smoke failure。
8) diesel engines are not fully charged at full speed during their use. There is an economic operating zone for diesel engines in general. Only organic placards are marked with a rated rate of turnback, whereas the optimal rate of economic performance is approximately 85 per cent of the rated rate of turnover, according to the characterization curve of diesel engines. The minimum amount of power/hour fuel consumed at this time is at the entire rotor range. The diesel speed sheet is marked with a green area, which is generally an economic area of operation for the diesel。
9) cooling water temperature control. Over- and over-temperature water can pose a serious hazard to diesel engines. When the operational water is too low, this results in a significant change in the gap between the motor components of the diesel press and the design, increasing operational resistance and significantly accelerating the wear and tear of the diesel press. (if water temperatures below 30 °c are more than five times normal wear and tear, increase fuel consumption by 15 %). The high temperature of the water causes overheating of diesel engines, changes in the gap between components, reduction of oil pressure, piston viscos, reduction of power, etc., and it is recommended that water temperature be maintained at 80 ~90 °c。
10) installation of diesel engine preheaters on diesel engines. The use of diesel engines in winter, in order to save fuel and reduce energy consumption, preheating diesel engines by exhausting pipes, increasing the temperature of diesel fuel, reducing the viscosity of diesel fuel, and making diesel fuel fully incinerated and burned, could result in a significant reduction of fuel consumption by 5 per cent to 10 per cent. The best temperature range for diesel preheating is 66-75°c, with the best effect。
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