As a backup power source or main power source, the engine performance of a
diesel generator set directly affects the stability of power supply. The boost regulation function is one of the core technologies of modern diesel engines. By optimizing the intake efficiency, it significantly improves power output, reduces fuel consumption and reduces emissions. This article will analyze the technical principles, practical value and maintenance points of boost regulation for you.
1. Technical principles of boost regulation
Diesel engines generate power by burning diesel, and air is the "fuel" for combustion. The core of the boost regulation function is to increase the intake volume to make the fuel burn more fully.
Exhaust gas turbocharger: Use the exhaust gas discharged by the engine to drive the turbine, which drives the compressor to compress the air and send it into the cylinder.
Intercooler: Cool the compressed high-temperature air to increase the air density and further increase the oxygen content.
Electronically controlled regulating valve: According to parameters such as engine speed and load, the boost pressure is adjusted in real time (usually controlled by the exhaust bypass valve).
Data proves: The power of supercharged engines is 30%-50% higher than that of naturally aspirated engines, and fuel consumption is reduced by 10%-20%.
2. Three major values of supercharged adjustment
1. Improve power performance
Highland adaptability: For every 1,000 meters increase in altitude, the air density decreases by 10%. Supercharged adjustment can automatically compensate for the intake volume to ensure stable power output.
Transient response: When the load changes suddenly (such as motor start-up), the supercharged system quickly increases the intake pressure and reduces speed fluctuations.
2. Reduce fuel consumption
Combustion optimization: More air makes the fuel atomization finer, the combustion efficiency is improved, and the particulate matter emission is reduced by more than 40%.
Economic mode: Some models can adjust the supercharged pressure through the ECU, reduce the power output at low load, and achieve fuel saving.
3. Extend equipment life
Thermal load control: Supercharged intercooling technology reduces the intake temperature, reduces the thermal stress of the engine, and extends the life of components such as pistons and valves.
Knock suppression: Accurate supercharged control avoids excessively high combustion temperature and prevents knock damage to the engine.
3. Maintenance points of boost adjustment system
1. Daily inspection
Intake system: Check whether the air filter is blocked and whether the supercharger intake pipe is leaking.
Lubrication system: Confirm that the supercharger lubricating oil pipe is unobstructed and the oil pressure is normal (usually 0.2-0.4MPa).
2. Regular maintenance
Replacement cycle: Check the bearing clearance of the turbocharger every 20,000 kilometers or 500 hours, and replace it if it exceeds 0.3mm.
Cleaning the intercooler: Use compressed air to reverse purge every 1 year or 2000 hours to prevent blockage.
3. Fault diagnosis
Abnormal sound: The wear of the supercharger bearing will make a "squeaking" sound, and it is necessary to stop and repair it immediately.
Blue smoke: The damage of the supercharger sealing ring causes the oil to flow into the combustion chamber, and the seal needs to be replaced.
Conclusion
The boost adjustment function is the "behind-the-scenes hero" of the efficient operation of the diesel generator set. Through scientific maintenance and technical upgrades, its advantages of increasing power, reducing fuel consumption and extending life can be fully utilized. It is recommended that enterprises establish a special maintenance plan for the boosting system and regularly train operators to master fault diagnosis skills to ensure that the emergency power supply operates with "strong power, low fuel consumption and long life".
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