Diesel Generator Tech

The quality of the brushes is poor, or the brands and types of brushes are different. Check the brand, type and quality of each brush of Volvo diesel generator set, and replace the brush of Volvo diesel generator set with the same high-quality brush. The connection between the brush and lead, lead and terminal of Volvo diesel generator set is loose, the contact resistance is large, and the load distribution ring between brushes is even. Check whether the brush of   Volvo diesel generator set   is in contact with the copper pin, whether the screw in the lead circuit is tightened and whether the contact is good. The brush pressure is uneven. Check and adjust the brush pressure of Volvo diesel generator set. Pay attention to make the brush pressure of Volvo diesel generator set uniform, and the difference is not more than 10%. The brush is poorly ground and has a small contact area. The brush should be reground or Volvo diesel generator set should be operated under load. The surf...

The diesel generator is a kind of power equipment that takes the diesel engine as the prime mover and drives the synchronous diesel generator to generate electricity. This is a kind of Diesel generator generating device with quick start, convenient operation and maintenance, low investment and strong adaptability to the environment. Remove the water stain, oil stain, iron embroidery and other sundries attached to the diesel generator. Make a comprehensive inspection tour of all devices of the  diesel generator , check whether all the connection, fastening and control parts of the diesel generator have been firmly connected, and the nuts of the serial Diesel generator shock absorber shall not be tightened too tightly, otherwise the shock absorption of the diesel generator will become invalid. Check whether the fuel storage capacity in the oil tank of the diesel generator meets the requirements, whether the oil volume in the oil pan of the diesel generator, the fuel injecti...

The generator set is an indispensable and important component of the telecommunications network. The generator set is the foundation and heart of the operation of the telecommunications network, and is an important guarantee to ensure the optimization, efficiency, and safe operation of the telecommunications network. Whether it is exchange or transmission, data or billing, there must be a power supply. Abnormal operation of the generator set will affect the operation of communication equipment in the communication bureau (station), and communication quality cannot be guaranteed. Prolonging the operating time of the   generator set   at low idle or low load can cause an increase in the oil consumption of the generator set and carbon deposition in the cylinders, which can cause power damage and performance degradation of the generator set. If possible, load 70% of the load and run it at least once every six months, which can burn off excessive carbon deposits in the cylinder of ...

When the piston of the diesel generator moves up and down, the intake valve opens, and the fresh air filtered by the air filter of the diesel generator enters the cylinder to complete the intake stroke. The diesel generator or diesel generator plug moves from bottom to top, the inlet and exhaust valves are closed, the air is compressed, the temperature and pressure increase, and the compression process is completed. When the piston is about to reach the top, the fuel injector of the diesel generator sprays the filtered fuel into the combustion chamber of the diesel generator in the form of mist and mixes it with high temperature and high pressure air to ignite and burn automatically immediately. The high pressure formed pushes the piston of the   diesel generator   downward to work, drives the crankshaft to rotate, and completes the work stroke. After the work stroke of the diesel generator is completed, the piston of the diesel generator moves from down to up, and the exhaust...

The parts where cracks occur on Volvo diesel generator sets are often related to their structures. The parts where cracks occur on different types of Volvo diesel generator sets have certain regularity. Generally speaking, there are only three reasons for cracks in Volvo diesel generator sets. The cylinder block of Volvo diesel generator set has complex structure and uneven wall thickness. The rigidity of some weak parts of Volvo diesel generator set is low, and Volvo Diesel generator set is easy to crack. The stress concentration of Volvo diesel generator set occurs at the transition of machined parts, unprocessed parts and wall thickness. When these stresses are superimposed with the residual stress when the construction stops, Volvo diesel generator set is easy to crack. In cold winter, the cooling water in the water jacket of the  Volvo diesel generator set  freezes and cracks, or the hot water bursts in cold winter, because the Volvo diesel generator set does not have ant...

If Yuchai diesel generator is installed under the aircraft, it is recommended to use Yuchai diesel generator remote radiator for cooling due to space constraints. The radiator in the remote radiator cooling system of Yuchai diesel generator is separated from the engine and dissipated by the electric fan of Yuchai diesel generator. This system can be used as a fully enclosed unit for outdoor use or as an open form for indoor equipment. When the radiator is installed more than 3 meters above the Yuchai diesel generator, most   Yuchai diesel generator   need separate water tanks and electric water pumps. The size of the branch water tank depends on the capacity of the entire cooling system, that is, the total number of pipes required plus the amount of cooling water used. The cooling water of Yuchai diesel generator is driven by an electric circulating pump, and the circulating pump of Yuchai diesel generator passes through the radiator and...

The organization method of the maintenance process of Volvo diesel generator sets directly affects the maintenance quality, maintenance cost, maintenance time and production efficiency. Each repair unit shall adopt a reasonable process organization according to the specific conditions of the unit, such as the equipment conditions, process level, repair objects, materials and accessories supply of   Volvo diesel generator sets . According to the basic method and labor organization form of Volvo diesel generator set maintenance, the organization mode of Volvo diesel generator set maintenance process is divided into two ways. The basic method of repair operation is the repair of Volvo diesel generator set. The basic methods can be divided into on-board repair method and assembly interchange repair method. In the process of repairing Volvo diesel generator sets, the parts, assemblies and assemblies removed from the original engine are not among the scrapped parts. The repair method of ...

All parts of Cummins diesel generator in contact with various oils shall be cleaned after disassembly and shall not react with strong alkali, such as mineral oil, lubricating oil, Vaseline and paraffin. They are insoluble in water, but soluble in organic solvents, and these oils are mainly removed through chemical and electrochemical methods. Organic solvent degreasing is based on dissolving dirt, which does not damage metals and can dissolve various oils without heating. It is convenient to use and has good cleaning effect. Most organic solvents are flammable and expensive, and are mainly suitable for small  Cummins diesel generator  and decentralized maintenance work. Alkaline solvents are alkaline or alkaline salt aqueous solutions, which use the alkaline solution and saponified oil on the surface of parts for chemical reaction to generate water soluble soap and glycerol that is not easy to float on the surface of parts. Then wash with hot water, which is easy to ...

The compression ratio of a diesel engine in a silent diesel generator set is the ratio of the total cylinder volume to the combustion chamber volume. Its change not only affects the power and economy of silent diesel generator set, but also affects its starting performance. Each diesel engine is designed with an optimal compression ratio, but in the process of use, due to the influence of various related factors, the compression ratio of silent diesel generator sets often decreases. At the end of compression, the piston position is low, and the fit clearance of relevant parts is too large. When the fit clearance of the main bearing and main journal of the crankshaft of the  silent diesel generator set , connecting rod bearing and connecting rod journal, connecting rod bushing and piston pin, or piston pin and pin hole is too large. In the compression process of the mute diesel generator set, the actual position of the top dead center of the piston of the mute diesel generator set o...

Today, we will briefly introduce the characteristics of the main system structure of Volvo diesel generator set. Base: The base is composed of two forms, one is the base separate frame type, and the other is the base oil tank type. The base is formed by cutting and welding of channel steel and steel plate. The base is equipped with diesel generator bracket, generator bracket and water tank bracket. The base oil tank type is also equipped with oil filler, oil level gauge, oil inlet and oil outlet. Volvo diesel generator units below 150KW are all made of steel plates. All steel bases are subject to acid pickling and phosphating treatment and then sprayed with plastic. All edges and corners of the bases are treated with non-injured hands. Control system: The control system of  Volvo diesel generating set  is mainly composed of controller, relay, fuse, air circuit breaker, functional instrument, status indicator, brushless motor, electronic speed control actuator, electric regulat...

  One of the keys to correctly maintain the cooling system of diesel generator set is to use a water filter. Many diesel generator set operators believe that it is unnecessary to use a water filter after adding clean water and chemical additives to the cooling system of diesel generator set. This view is incorrect, because the dirt is inherent in the diesel generator set engine, and it has nothing to do with the use of high-quality cooling water. The sealing surface of the pump and cylinder liner deposits or the scaling of these parts, the cooling system components of the  diesel generator set  are corroded, worn, the thermostat is blocked, etc., and the cooler, radiator, Intercooler pipe and cooling system are blocked by oil. Oily deposits are formed on the heat transfer surface. When the diesel engine of the diesel generator set is maintained at "B" level for the first time (or the engine oil is replaced), the working core of the water filter of the diesel generator set...

Once the connecting rod of Yuchai diesel generator set is bent, it not only reduces its own strength, but also makes the piston group of Yuchai diesel generator set mismatched with the cylinder, bringing abnormal longitudinal wear to the piston group and the cylinder. The bending test of the connecting rod of Yuchai diesel generator set is carried out on the connecting rod corrector. According to the hole diameter of the connecting rod bearing of   Yuchai diesel generator set , select a suitable expansion pair to install into the mandrel, and install the connecting rod big end bearing cap. At this time, the bearing is not installed. Tighten it to the specified torque and install the matching piston pin. Then put the big end of the connecting rod of Yuchai diesel generator set into the core shaft of the corrector, turn the adjusting nut, and the core shaft will deflect. The function of the curved cam is to gradually expand the expansion, fit it with the large end hole of the connect...

  Bench grinder is mainly composed of grinding wheel, motor and machine body in the basic bench work equipment of Jichai diesel generator set maintenance. According to different shapes, grinders are divided into bench grinders and vertical grinders. The Bench grinder is mainly used for Jichai diesel generator set to grind various cutters and deburr small parts. When using the Bench grinder of Jichai diesel generator set, the safety operation regulations must be strictly followed. When using the Bench grinder of  JICHAI diesel generator set , the rotation direction of the grinding wheel must be consistent with the rotation direction indicator, so that the grinding debris can fly down from the grinding wheel. After the Jichai diesel generator set is started, the grinding wheel speed should be stable before grinding. When grinding with a Bench grinder, it is necessary to prevent the cutting tool or grinding parts from causing severe impact or excessive pressure on the grinding wh...

During normal operation of the generator, the fuel consumption is approximately 2% of the fuel consumption. If the fuel consumption exceeds this ratio during use, it indicates that your generator has a problem and requires repair and maintenance. Normal and abnormal wear caused by long-term use or improper maintenance of the generator can cause longitudinal stretching marks on the cylinder liner, resulting in unclean oil scraping of the generator. Or because the torsion spring of the internal strut of the oil ring is disconnected at the opening of the oil ring, which causes the generator to scrape oil unclean and participate in combustion, causing serious fuel consumption symptoms of the generator. Although it will not affect the starting of the generator, the loss of oil is huge, and the serious wear of the generator valve guide will also affect the fuel consumption of the  diesel generator . Check if the oil used is the specified oil, and if not, replace it with the specified oil...

  The current diesel generator regulator can comprehensively reflect a variety of control signals, including voltage deviation signals, for excitation regulation, so it is called excitation regulator. Obviously, the excitation regulator includes the function of voltage regulator. The semiconductor excitation regulator of diesel generator is briefly introduced below. Excitation control system: the excitation system is an important part of the AC synchronous  diesel generator , which controls the voltage and reactive power of the synchronous diesel generator. In addition, the speed governing system controls the speed (frequency) and active power of the prime mover and diesel generator. The two are the main control systems of diesel generators. Excitation control system is a feedback control system composed of synchronous diesel generator and its excitation system. The excitation regulator is the main part of the excitation control system. Generally, it senses the change of diese...

  The components in the high-pressure oil circuit of the generator set include the fuel injection pump, governor, high-pressure fuel pipe, injector, etc. They are precise and important components in the diesel fuel supply system. Their working performance will directly affect the power output, fuel consumption, mechanical load and working reliability of   diesel engines . Therefore, the technical requirements for the repair of components in the high-pressure oil circuit are relatively high. In general, special technicians use the fuel injection pump test bench or injector calibration and fuel injection pump assembly or injector for debugging or repair. Fuel injection pump: the function of the fuel injection pump is to produce high-pressure diesel fuel, and according to the size of the diesel engine speed and load, send a certain amount of pressure and atomized diesel fuel to the combustion chamber through the injector. The fuel injection pump has many structural forms. Accordi...