Why Is The Load of Perkins Diese Genset High

Under high load conditions, Perkins generator is prone to group emission of black smoke. For example, when the diesel generator is overloaded, the exhaust gas is easy to emit black smoke. The black smoke in the operation of black smoke diesel engine will reduce the economy, high exhaust gas temperature and produce carbon deposition, resulting in piston ring blockage and valve stagnation.

In addition, diesel smoke will hinder sight and pollute the environment. The generator set is not allowed to work under black smoke for a long time. The load of diesel engine cannot be increased after black smoke. Therefore, the generator set is also a sign of limiting load increase.

If the amount of oil in the generator set is small, it will be evacuated, the oil pressure will drop, and the oil will not reach all lubricating surfaces, which will accelerate the wear of parts and even lead to Bush burning accidents.

1. The fuel capacity of the fuel tank of Perkins generator set shall ensure daily supply.

2. Perforated diaphragms shall be set in the oil supply and return areas of the oil tank to reduce the heat exchange of the generator set.

3. The storage position of generator set oil tank shall not be threatened by fire. The oil drum or oil tank shall be placed separately in a visible place, as far away from the generator set as possible, strictly abide by the safety production specifications, and smoking is strictly prohibited.

4. If the oil tank is manufactured by the user, it shall be noted that the box material of the oil tank of the standby generator set shall be stainless steel or steel plate. Do not spray paint or galvanized in the oil tank, because these two kinds of paint or galvanized will react with diesel and produce impurities, which may damage Yuchai generator set and reduce the quality, cleanliness and combustion efficiency of diesel.

5. After the oil tank is placed, the high oil level shall not be 2.5m higher than the generator set base. If the oil level in a large oil depot is higher than 2.5m, a daily oil tank shall be added between the large oil depot and the generator set so that the direct oil supply pressure is not greater than 2.5m. Even during the shutdown of the generator set, fuel is not allowed to flow into the generator set through the oil inlet pipe or injection pipe under the action of gravity.

The front and rear ends of the crankshaft are prone to excessive oil leakage, increasing fuel consumption, polluting the environment and increasing maintenance difficulty; Too high oil level will hinder the movement of connecting rod, increase resistance and reduce mechanical efficiency; Excessive engine oil of the generator set is easy to flow into the combustion chamber for combustion, increasing engine oil consumption. After the engine oil burns, it is easy to form carbon deposits at the piston ring, the valve seat at the top of the piston and the fuel injection nozzle, resulting in the jamming of the piston ring and fuel injection nozzle wall plug; High oil level is easy to produce oil vapor under the agitation of connecting rod big end, which will catch fire and burn at high temperature, resulting in crankcase explosion.

During the operation of Perkins diesel generator set, the fuel is burned in the cylinder and the waste gas is discharged out of the engine. However, under the conditions of high temperature and high pressure combustion, the diesel generator will emit black smoke due to local hypoxia, cracking and dehydrogenation, which will form solid micro particles with carbon as the main component. There are a variety of factors leading to the black smoke of Perkins diesel generator, So, how much do you know about the black smoke of Perkins diesel generator? Let's talk about it in detail.

 Insufficient fresh air in cylinder

1. Excessive dust accumulation in air filter element;

2. Corrosion, carbon deposit or oil stain of muffler;

3. Excessive clearance between inlet and exhaust valves reduces the valve opening;

4. Loose, worn and deformed parts of the adapter mechanism, the relative position of camshaft gear and crankshaft timing gear changes, and the valve opening and closing time is incorrect.

Reasons for temperature and pressure drop during cylinder compression:

1. Excessive wear of cylinder barrel and piston ring, incorrect installation of piston ring or loss of elasticity, resulting in air leakage of cylinder;

2. The valve clearance is too small, which is easy to be pushed open when the vehicle is hot, or the cylinder seal is not tight due to valve ablation and carbon deposition;

3. Air leakage on the joint surface between cylinder head and engine body, injector and cylinder head;

4. The valve sinks seriously, and the clearance between piston and piston pin, piston pin and connecting rod small end, connecting rod big end and connecting rod journal is too large, which increases the volume of combustion chamber and reduces the compression ratio.

Poor diesel atomization

1. Fuel injector pressure adjustment is too low;

2. The pressure regulating spring of fuel injector is broken or jammed;

3. Carbon deposits on the needle valve and valve seat of the fuel injector, and the needle valve is stuck or worn too much;

4. The pressure reducing ring belt of the outlet valve of the fuel injection pump is worn too much, causing the fuel injector to drip oil.

Incorrect oil supply time and quantity

1. Oil supply time is too late;

2. At the beginning of start-up, when the gas pressure and temperature are low and the oil supply time is too early;

3. Increase the fuel supply stroke after the plunger coupling of fuel injection pump is worn;

4. The stroke of adjusting gear rod or pull rod of fuel injection pump is too large, resulting in excessive fuel supply.

The above is all about the cause analysis of black smoke from Perkins diesel generator. To sum up, the basic reason for the black smoke from the exhaust of Perkins diesel generator set is the inevitable result of insufficient and incomplete combustion of the fuel entering the cylinder. Therefore, if the diesel generator appears black smoke in the process of use, we should first find the reason on the diesel engine and its auxiliary parts. Dingbo Power has a full range of services, rapid response to customer needs, and has a perfect service system, so you have no worries. Welcome to call us for consultation and purchase, phone number +8613481024441.