Diesel Generator Tech

Below, based on different application scenarios, we will briefly introduce several portable generators: Household Portable Generator   In general, household portable generators can use generators exceeding 3KW. If you are considering a small generator with a power output of 3-4 kilowatts, the maximum power it can produce can meet the electricity demand of a refrigerator (or room air conditioner), as well as lights, televisions, computers, and some low current appliances. If the generator used is less than 5KW, it is impossible to directly connect a small generator to your home's electrical wiring, and since the home's electrical wiring cannot provide enough power, extension cords are usually needed. If your home's electricity consumption exceeds the output power of the generator, it is easy for the generator to trip.   You can connect the  portable generator  to your home through a conversion switch. This method is not as portable as using backup gener...

The previous article introduced the main factors that cause failures in diesel generators, and in this article, we will continue to explain them. (2) Changes in fuel injection pressure. During the operation of a  diesel engine , the injection pressure often changes, causing the injection pressure to be either too high or too low. Excessive fuel injection pressure can cause early wear of the fuel injection pump plunger components and injectors, and sometimes even cause high-pressure oil pipes to expand and crack, resulting in cylinder knocking during diesel generator operation; If the fuel injection pressure is too low, it will cause poor fuel atomization, and the nozzle is prone to carbon buildup, making it difficult to start. The main reason for the change in fuel injection pressure is that the elasticity of the pressure regulating spring decreases or breaks, causing a decrease in fuel injection pressure; Excessive clearance between the needle valve guide part and the needle valve...

In the troubleshooting of diesel generator sets, Dingbo power generation equipment has mentioned that abnormal smoke or the color of smoke that does not conform to common sense is a symptom of the fault. In addition, some abnormal steam emission is also a warning for the fault. Diesel generator sets  may encounter steam from the refueling port due to factors such as oil quality and environmental temperature difference. How should we troubleshoot this issue? Next, the technical personnel from the diesel generator manufacturer will briefly explain to you based on their experience: 1. After starting the diesel engine, observe the exhaust smoke situation of the exhaust pipe. After 5 minutes, the exhaust smoke turns light gray, and a small amount of white vapor emerges at the fuel filler, which is within the normal range. 2. Check the oil quality of the engine oil to see if there is any deterioration. 3. After stopping the machine, disassemble the fuel injector and conduct an oil pressu...

 What should we do if the new diesel generator is overhauled without running-in? After the new diesel generator has been overhauled, the cylinder liner, piston, piston ring, and bearing bushes have been replaced. It has not been fully run-in and loaded with load, causing early wear and tear of the parts. And some also show the phenomenon of cylinder pulling and tile burning. After the diesel generator is cold-started, the oil viscosity is high and the flow resistance is also large, which makes the time lag for the oil to enter the friction pair, and all parts of the diesel engine are not fully lubricated, causing the gears and bearings of the diesel analyzer to be damaged due to poor lubrication , but also aggravated the wear of the cylinder and the bearing bush. Especially supercharged diesel generators will cause ablation of the turbocharger's shaft. For this reason, the supercharged diesel generators should be idling for a while after starting, the standby oil tem...

 What problems should be paid attention to when replacing parts of Cummins diesel generator set? First of all, pay attention to the assembly technical requirements for replacement and repair of Cummins diesel generator. Repairers generally pay more attention to the valve clearance and bearing clearance of diesel generators, but some technical requirements are often ignored. For example, when installing the cylinder liner of a diesel generator set, the upper plane should be about 0.1mm higher than the plane of the body, otherwise The failure of cylinder air leakage or continuous damage to the cylinder head gasket will occur. Different enlarged parts (accessories) of the same model are not universal. When using the repair size method, you can choose to increase the size of the parts, but you must find out which level of increase is the part. If the size of the parts is not mastered when the diesel generator is replaced and repaired, it will not only waste time, but also...

 Cummins diesel generators will generate a lot of heat during operation. If ventilation and heat dissipation are not done properly, the generator set may be damaged or even cause major equipment failures. Therefore, users must pay attention to the ventilation and heat dissipation problems of the unit during installation. Specific requirements are as follows: 1. When installing the Cummins diesel generator set , the radiator should be as close to the air outlet as possible to avoid the recirculation of hot air. When there is no air duct, it is recommended that the distance between the radiator and the air outlet should not exceed 150 mm. If the equipment room cannot meet the above requirements, the corresponding air duct should be installed. 2. The area of the exhaust port should be 1.5 times the exhaust area of the radiator. Under normal circumstances, it is necessary to cooperate with the radiator to install the air duct and the exhaust shutter. The bend of the ...

  Since January this year, the southern region has suffered from continuous rainy weather. Improper handling of diesel generator sets during use is prone to moisture problems, especially the damping of the motors of the generator sets, which has a great impact on the life and work of the generator sets. At this time, the user must dry the damp diesel generator set . For the relevant drying method, the user can refer to the following methods: 1. Short-circuit the three-phase outlet of the stator winding and connect it firmly. 2. Adjust the resistance of the voltage regulating rheostat in the excitation circuit to the maximum value. If the resistance value is not enough, add another resistance to increase the resistance value. 3. Start the generator set , slowly increase it to the rated speed, and then slowly adjust the excitation current. The excitation current is determined according to the damp condition of the generator set, and the short-circuit current of the stator ...

The engine of the 290kW Cummins generator set adopts the Cummins patented PT fuel system, which enables the set to have higher reliability, durability, power and fuel economy while meeting environmental emissions. So do you know what its crankshaft position sensor failure strategy is? (1) The concept of failure strategy. The so-called failure strategy is the operation mode of the electronically controlled diesel engine under the fault state. When the diesel engine is in the following conditions, the control strategy will enter the Limphome state. 1. The crankshaft position sensor is damaged or the signal circuit is open or short circuited. 2. The camshaft phase sensor is damaged or the signal circuit is open or short circuited. 3. The oil pressure sensor of the common rail is damaged or the circuit is open or short circuited. 4. The oil metering valve of the high-pressure oil pump is damaged or the drive circuit is open or short-circuited. 5. The electronic throttle sensor is d...

Recently, Starlight Power exported one unit 500KW Cummins silent containerized diesel generator set to Saudi Arabia, the customer has received it. It is our honor to cooperate with the customer, thanks for the cooperation!   This 500KW diesel generator set is configured as follows: Diesel engine: Cummins KTAA19-G6A Manufacturer: Chongqing Cummins Engine Company Ltd. Type: 4 stroke, in line, turbocharged & air to air intercooled Displacement: 19L BoreXStroke: 159X159mm Compress Ratio: 13.9:1 No. of Cylinder: 6 Fuel System: Cummins PT Frequency/speed: 60Hz/1800rpm Standard: BS-5514 and DIN-6271 standards are based on ISO-3046.                    Alternator: Shanghai Kepu TFW2-500-4A Manufacturer: Shanghai Kepu Generator Equipment Co., Ltd Alternator capacity: 625KVA Protection level: IP22 Insulation class: H Efficiency: above 95% Bearing: Single bearing Type: Brushless and self-exciting Voltage regulation: AVR   Controller: S...

Starlight Power is a professional manufacturer of diesel generator sets, founded in 1974, with 64 sales and service centers in China, providing technical consulting, free commissioning, maintenance and training services to customers. Starlight is also the largest OEM supporting manufacturer of Cummins diesel generators in China. Over the years, we have cooperated with Cummins, VOLVO, Perkins , Shangchai (SDEC), Ricardo, Deutz, Weichai, Weichai Baudouin (400KW to 3000KW heavy duty emergency diesel generators), Yuchai and other engine manufacturers to provide the highest quality generator sets to users, which has been well received by customers. Starlight diesel generators have two major characteristics: one is for emergency use, the continuous working time is not long, generally only needs to run for a few hours ( ≤ 12H); the second is as a backup, the diesel generator is usually in a standby state, only when the main power supply is completely failed, the diesel generator wil...

In this article, Starlight mainly shares the methods to clean and replace air filter element of Cummins diesel generator . After the air filter of Cummins generator set is used for a period of time, the filter element will become dirty, and the intake resistance of the filter will also increase. When the intake resistance of the air filter increases to more than 625kpa, the diesel engine will not get enough air supply, resulting in early   exhaust black smoke and power shortage. The user can determine the blockage of the air filter by observing the air resistance indicator installed on the intake pipe behind the air filter. That is, if the indication window of the air resistance indicator changes from green to red under normal conditions, it indicates that the intake resistance of the filter exceeds the limit value and needs to be cleaned or replaced. In the event of an air filter blockage, stop Cummins generator immediately to clean or replace the air filter core,...

Fuel requirements for Cummins generator set: Use high quality light diesel oil with lower temperature. Because of the higher temperature fuel used, the filter can be clogged to reduce power and cause engine starting difficulties. After Cummins generator is shut down, remove the water from the fuel filter in a hot state and replace the filter regularly (250h). If the fuel used is dirty, the filter will be blocked in advance, and the engine power will decrease after the filter is blocked. Requirements for lubricating oil of Cummins generator set: 1) Viscosity in accordance with SAE 15W40 2) Quality meets API CD or higher 3) Change the oil and filter regularly (250h) Note: Engine oil of CF4 or above must be used on the plateau. Because the combustion condition of the engine in the plateau deteriorates, the oil pollution is very fast, the oil life below CF4 level is less than 250h, and the oil change period should be shortened by half. Oil that exceeds the...

Recently, Chongqing Cummins Technical Center officially started operation in Liangjiang New Area. According to sources, the center is Cummins’ first research and development center for developing large horsepower engines in China. Its operation will greatly boost the Cummins competitiveness in developing large horsepower diesel engines and natural gas engines. With 50-50 shares from Chongqing Machinery and Electronics Holding (Group) Co., Ltd. and Cummins, Chongqing Cummins has been in business for 24 years and has become the most well-known production base of large horsepower engines. Currently, its products are well received both at home and abroad. The first phase of the technical center boasts six engine trial operation rooms, which are able to test the performances, emissions and reliability of 14L-72L engines. In the near future, the center is capable of providing US Tier 4 Final test, Euro non-road Stage IV test, China non-road IV test. “Chongqing Cummi...

Characteristic of Starlight container silent diesel generator 1.Install with standard 20 feet or 40 feet container which is retrofitted, this can make the unit more flexible and convenient. 2.Including all functions of the standard silent type diesel generator set. 3.Laying sound absorbing cotton and metal perforated board inside the container box. 4.Equipped with industrial muffler, which has compact structure and good noise elimination effect. 5.Equipped with fuel supply system, control room, lighting system, cooling system, and maintenance space is reserved. 6.With high corrosion resistance, and all screws and bolts are rust proof. Advantages of Starlight container silent diesel generator 1.According to the world standard container planning and manufacturing, 20 feet for less than 1000KVA and 40 feet for more than 1250kva. 2.With CSC certificate of world container safety convention, the whole set can be directly shipped as a standard container, greatly s...