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How to improve the fuel efficiency of diesel generators to reduce the use cost?

Aug. 26, 2021

The method to improve the fuel efficiency of diesel generators. In order to obtain good combustion, make the diesel engine of the diesel generator run normally, and obtain the most economical fuel consumption, the fuel injection advance angle must be adjusted during installation after the fuel injection pump is checked. (The fuel supply advance angle is 28-31 degrees, and the fuel injection advance angle is 20--23 degrees).


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When adjusting, turn the ring gear of the flywheel so that the timing zero-degree line on the flywheel is aligned with the pointer of the inspection window on the flywheel housing. , The exhaust valve is closed). Remove the side cover of the fuel injection pump and turn the adapter plate to make the plunger spring of the first cylinder just compressed. Then turn the flywheel in the opposite direction (clockwise) about 23 degrees, tighten the fuel injection pump bolts (adjust the speed of the governor diesel engine is low, loosen the bolts on the adapter plate to fine-tune the drive shaft joint engraved on the index Line, 3 degrees per grid, and then tighten the bolts).


In the actual maintenance work, the fuel supply advance angle is generally checked. The fuel supply advance angle refers to the crankshaft angle of the piston before the top dead center of the compression stroke when the oil is just coming from the outlet of the fuel injection pump. Because checking the fuel supply advance angle is more convenient and accurate than the fuel injection advance angle. If you find the fuel supply advance angle of a diesel engine, if you want to know the fuel injection advance angle of the engine, you only need to subtract 8 degrees from the fuel supply advance angle to get the fuel injection advance angle.


The experience gained from the long-term maintenance of diesel generators: Too early or too late for the diesel engine fuel supply time of the diesel generator is harmful. The fuel supply time of the diesel engine is too early, that is, the fuel supply advance angle is too large. When the piston is not far from the top dead center, the fuel injection pump starts to supply fuel. At this time, due to the low pressure and temperature of the cylinder gas, the ignition delay period is prolonged. As a result, the diesel engine is not easy to start, runs rough, knocks cylinders, decreases power, emits black smoke from the exhaust pipe, and causes early wear and tear of mechanical parts.


The fuel supply time is too late, that is, the fuel supply advance angle is too small. Since the combustion is carried out after the piston has descended in the working stroke, this will reduce the power of the diesel generator and increase the fuel consumption rate, which will easily cause the body temperature to be too high. The cooling water boils, and the exhaust pipe emits white smoke or black smoke. In addition, the fuel injection advance angle of the diesel engine is different, and the adjustment should be carried out according to the manual.


As a professional diesel generator manufacturer, we always insist on using first-class talents to build a first-class enterprise, create first-class products, create first-class services, and strive to build a first-class domestic enterprise. If you would like to get more information welcome to contact us via sales@dieselgeneratortech.com.

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