Mike@kuake.biz
Matters needing attention in speed regulation of diesel generator set
Article source:this site | Issuing time：2019-03-22
When the diesel generator set has a hidden danger of failure, the governor will appear fast and slow, which will affect the working efficiency of the generator set and cause waste. Therefore, the quark motor sorts out the following reasons by sorting out the reasons for the governor failure:
The internal lever of the governor is worn out, which causes too much lag in the direction change of the two-way speed adjustment movement of increasing or decreasing the fuel supply.
When the engine is working, the speed control response is bound to lag behind the actual speed change, but the lag cannot be too large, otherwise it will produce a larger adjustment amplitude.
The adjustment amplitude is too large, so that the speed will continue to increase or decrease fuel when the speed rises and falls due to the increase or decrease of the fuel supply. After the speed exceeds the adjustment range of the governor, the strong feedback signal is reversed by the governor. As a result, the speed control response exceeds the predetermined range, resulting in the phenomenon that the speed repeatedly and regularly rises and falls around a certain value.
The flexibility of the oil supply rack does not meet the requirements.
The fuel supply rack of the fuel injection pump must remain absolutely flexible to ensure the sensitivity of the speed control response.
Due to rusting, deformation of the plunger and even parts after tightening, the gear ring and gear rod teeth crushed after the plunger spring is broken, the shaft sleeve at the end of the gear rod is severely worn, and the shift fork of the shift fork oil adjustment mechanism is tightened Incorrect angle, improper installation or coordination of the thrust swash plate and fly ball seat of the fuel injection pump governor will affect the flexibility of the fuel supply rack.
When the resistance of flexibility has not reached the level that the oil supply rack cannot move at all, there will be a phenomenon of rapid and slow time (if the oil supply rack cannot move at all, the failure phenomenon will depend on the position of the rack. Differences; for example, diesel generators cannot be started, cannot be turned off, uncontrolled speed, runaway, etc.)
3. Improper adjustment of the steady speed spring.
This is similar to the improper adjustment of the steady-speed spring when the idle speed is unstable, because the rapid spring and the oil supply rack cannot work together flexibly.
The internal lever of the governor is worn out, which causes too much lag in the direction change of the two-way speed adjustment movement of increasing or decreasing the fuel supply.
When the engine is working, the speed control response is bound to lag behind the actual speed change, but the lag cannot be too large, otherwise it will produce a larger adjustment amplitude.
The adjustment amplitude is too large, so that the speed will continue to increase or decrease fuel when the speed rises and falls due to the increase or decrease of the fuel supply. After the speed exceeds the adjustment range of the governor, the strong feedback signal is reversed by the governor. As a result, the speed control response exceeds the predetermined range, resulting in the phenomenon that the speed repeatedly and regularly rises and falls around a certain value.
The flexibility of the oil supply rack does not meet the requirements.
The fuel supply rack of the fuel injection pump must remain absolutely flexible to ensure the sensitivity of the speed control response.
Due to rusting, deformation of the plunger and even parts after tightening, the gear ring and gear rod teeth crushed after the plunger spring is broken, the shaft sleeve at the end of the gear rod is severely worn, and the shift fork of the shift fork oil adjustment mechanism is tightened Incorrect angle, improper installation or coordination of the thrust swash plate and fly ball seat of the fuel injection pump governor will affect the flexibility of the fuel supply rack.
When the resistance of flexibility has not reached the level that the oil supply rack cannot move at all, there will be a phenomenon of rapid and slow time (if the oil supply rack cannot move at all, the failure phenomenon will depend on the position of the rack. Differences; for example, diesel generators cannot be started, cannot be turned off, uncontrolled speed, runaway, etc.)
3. Improper adjustment of the steady speed spring.
This is similar to the improper adjustment of the steady-speed spring when the idle speed is unstable, because the rapid spring and the oil supply rack cannot work together flexibly.
Quark Motor specializes in producing diesel generator sets，Volvo diesel generator set，Yuchai diesel generator set，Cummins diesel generator set，Shangchai diesel generator set，400kw Cummins diesel generator setWait for a full range of diesel generator sets, consultDiesel generator set manufacturers,to understandingdiesel generator set offer, welcome to inquire; we are a manufacturer of diesel generator sets, and we will solve your power problems in all aspects!24-hour hotline：400-966-0200,website：en.kuake.biz
闽公网安备 35098102351072号
