After the Perkins diesel generator is used for a long time, the friction coefficient of each component will change at any time. For example, the change of valve clearance during the operation of Perkins diesel generator set will cause the power shortage of Perkins diesel generator set. Therefore, in daily operation, we need to learn to adjust the Perkins diesel generator set to ensure the best state of the Perkins diesel generator set.
The common adjustment methods are as follows:
1. Adjustment of fuel supply advance angle
In order to obtain the most economical fuel consumption rate, the fuel supply advance angle is generally corrected after the Perkins diesel generator set is operated for 500h or when the fuel injection pump-regulator assembly is calibrated and reassembled.
2. Adjustment of valve clearance
When replacing the cylinder gasket and piston ring of the Perkins diesel generator set or tightening the cylinder head according to the specified torque due to the leakage of the cylinder gasket, the valve clearance must be adjusted. Because the valve clearance is too large, the valve will open late and close early (the normal condition is that the inlet valve opens early and the exhaust valve closes late), the intake is insufficient, the exhaust is not clean, and the exhaust noise of the diesel engine is too large; However, too small valve clearance will result in loose valve closing, ablation or air leakage.
3. Adjustment of oil pressure
There are generally two lubrication methods for Perkins diesel generating set: pressure lubrication and splash lubrication. Low or high oil pressure will affect the lubrication quality of diesel generator set. Therefore, diesel generator set must control the oil pressure within the specified range when working.
4. Adjustment of regulator
In the process of using Perkins diesel generator set, the charging ammeter pointer is not moving, and the charging current is too large or too small. If the charging current of the battery is too large, the service life of the battery will be shortened; If it is too small, the battery cannot be charged on time. When the diesel generator set is working, if the charging current displayed by the charging ammeter is too large, the current limiting spring of the regulator should be adjusted to shorten the spring, and then the current will decrease, otherwise the current will increase. In the process of adjustment, pay attention not to exert too much force, and gently touch it until it meets the requirements.
5. Adjustment of fan belt
If the fan belt of Perkins diesel generator set is too tight, it will aggravate the wear of the direct-alternator bearing, water pump bearing and fan bearing. If the belt is too loose, it will cause insufficient fan air volume and affect the cooling effect of the cooling water. At the same time, the output voltage of the generator will drop, and the flow of the water pump will drop, which will not meet the use requirements. Therefore, the fan belt must be adjusted according to the use requirements.
6. Pressure reducing adjustment of Perkins diesel engine
During operation, Perkins diesel generator set is often difficult to start due to the weather or insufficient battery power. At this time, the operator can reduce the compression ratio, improve the starting resistance and start the Perkins diesel generator set by reducing the pressure of the diesel engine inlet valve.
Through the specific adjustment of each component, it can ensure that the Perkins diesel generator set is in the best operating state, and in the long run, it can also add a guarantee for the safe operation of the enterprise. I hope you can strengthen your learning.
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