The fuel injection pump is an important component of the fuel supply system of the Yuchai diesel generator set. If the fuel injection pump malfunctions, it will directly affect the power, economy, and reliability of the Yuchai diesel generator set. Therefore, regular maintenance is necessary. Next, let me explain several key points for maintaining the fuel injection pump of the Yuchai diesel generator set:

1. The unit should use clean diesel fuel

The Yuchai diesel generator set has high requirements for oil filtration. When using it, users must choose clean diesel that meets the required grades. At the same time, it is necessary to ensure that it has been precipitated for 48 hours before use, because any impurities in diesel can cause serious corrosion or wear to the fuel injection pump plunger, outlet valve components, and transmission components.

2. Regularly check the amount and quality of oil in the fuel injection pump oil pool

Before starting the Yuchai diesel engine, the quantity and quality of the oil in the fuel injection pump should be checked to ensure that the oil is sufficient and of good quality. If the oil deteriorates due to mixing with water or diesel, it may cause early wear of the plunger and outlet valve components, resulting in insufficient diesel power, difficult starting, and in severe cases, corrosion and rust of the plunger and outlet valve components. In addition, when the diesel engine is not used for a long time, it is necessary to check whether there are impurities such as water and diesel in the oil pool of the oil pump. If there are any, they should be replaced immediately. Otherwise, due to long-term storage, moisture can easily cause the plunger and oil outlet valve components to rust and get stuck, leading to scrapping.

3. Regularly check and adjust the fuel supply advance angle of the fuel injection pump and the fuel supply interval angle of each cylinder.

During use, due to the loosening of the coupling bolts, wear of the camshaft and roller body components, the fuel supply advance angle and the fuel supply interval angle of each cylinder often change, causing diesel combustion to deteriorate, the power and economy of the diesel generator set to deteriorate, and at the same time, it is difficult to start, unstable operation, abnormal noise and overheating. Especially for fuel injection pumps that have been used for a long time, it is more important to pay attention to the inspection and adjustment of the fuel supply interval angle.

4. Regularly check and adjust the fuel supply of each cylinder of the fuel injection pump

Due to the wear and tear of the plunger and oil outlet valve components, diesel internal leakage can cause a decrease or unevenness in the fuel supply of each cylinder. Therefore, it is necessary to regularly determine the fuel supply of each cylinder by observing the exhaust smoke of the diesel engine, listening to the engine sound, and touching the exhaust manifold temperature to ensure the power of the diesel generator set. Otherwise, the Yuchai diesel generator set is prone to difficulties in starting, insufficient power, increased fuel consumption, and unstable operation.

5. Regularly check the camshaft clearance

The Yuchai generator has strict requirements for the axial clearance of the fuel injection pump camshaft, generally between 0.03 and 0.15mm. If the clearance is too large, shims can be added on both sides for adjustment. If the radial clearance is too large, it is generally necessary to replace it with a new one. Excessive camshaft clearance can cause unstable operation of the Yuchai diesel generator set, so users should pay attention to regular inspections.

Guangzhou Saiwei Energy Technology Co., Ltd. is a comprehensive enterprise specializing in the design, production, and installation of generators. Guangzhou Saiwei has many years of experience in engineering design and installation services. For many years, Guangzhou Saiwei has been committed to providing every customer with comprehensive products and energy solutions, including technical consulting, whole machine and generator supply, operation training, etc., with leading technology and first-class quality. The product range covers land diesel generator sets, marine generator sets, high-voltage generator sets, etc., and is widely used in industries such as power, communication, iron towers, healthcare, financial systems, data centers, etc. Welcome to inquire: 13302262088