1. Structure The basic structure of a diesel generator set is composed of a diesel engine and a generator, and the diesel engine acts as a power to drive the generator to generate electricity. Let’s first talk about the basic structure of a diesel engine: it consists of components such as cylinders, pistons, cylinder heads, intake valves, exhaust valves, piston pins, connecting rods, crankshafts, bearings and flywheels. The diesel engine of a diesel generator is generally a single-cylinder or multi-cylinder four-stroke diesel engine. Let’s talk about the basic working principle of a single-cylinder four-stroke diesel engine: the diesel engine starts by rotating the diesel engine crankshaft through manpower or other power to make the piston reciprocate up and down in the airtight cylinder on the top. The piston completes four strokes during movement: intake stroke, compression stroke, combustion and work (expansion) stroke and exhaust stroke. When the piston moves from top to bottom, the intake valve opens, and the fresh air filtered through the air filter enters the cylinder to complete the intake stroke. The piston moves from bottom to top, the inlet and exhaust valves are closed, the air is compressed, the temperature and pressure increase, completing the compression process. live

A diesel generator set refers to a power machine that uses diesel as fuel and uses diesel engine as prime mover to drive the generator to generate electricity. The diesel engine converts the heat energy released by diesel combustion into kinetic energy, and the generator converts the kinetic energy into electric energy! However, during each conversion, part of the energy will be lost! The converted energy is always just a part of the total energy emitted by combustion, and its percentage is called the thermal efficiency of the diesel engine. In order to describe thermal efficiency practically, diesel generator manufacturers often use the G/KW.H parameter, which means how many grams of oil consumed in one kilowatt per hour. If you replace this unit with liters, you will immediately know how many liters of oil you consume, so that you can also know how much money you spend in an hour. Some manufacturers directly tell L/H, which means how many liters of oil consumed in an hour. Methods for calculating fuel consumption: 1. Generally, high-horsepower diesel engines with a maximum capacity of more than 100 horsepower must be consumed per horsepower hour when running at full load.

The concerns about whether the generator set is operating normally. Haixing generator set technicians remind you that there are several points that need to be paid attention to at all times: 1. AC ammeter: The needle indicates whether the indicator is normal, switch the current switch, measure the phase current value between each phase sequence. It is best not to exceed 10%. 2. AC voltage meter: Is the voltage indicated by the meter pin normal? 3. Whether the oil pressure indicated by the oil pressure gauge is within the normal range. 4. Charging meter: Whether the pointer is in the direction of (+). 5. Whether the water temperature indicated by the water temperature meter is within the normal range of 65℃~93℃. 6. Tachometer: Is the engine's rotation number appropriate? (1800 rpm at 60Hz) 7. Whether there is any abnormal sound or vibration of the generator engine.

The diesel generator set is a type of alternating power supply equipment for self-provided power stations. It is a small independent power generation equipment that uses internal combustion engines as power to drive synchronous alternating generators to generate power. The modern diesel generator set consists of a diesel engine, a three-phase AC brushless synchronous generator, a control box (screen), a heat dissipation water tank, a coupling, a fuel tank, a muffler and a public base. The axial direction of the flywheel housing of the diesel engine and the front end cover of the generator are directly connected by shoulder positioning, and a cylindrical elastic coupling is used to directly drive the rotation of the generator by the flywheel. The coupling method is fixed together by screws, so that the two are connected into a steel body, ensuring that the concentricity between the crankshaft of the diesel engine and the generator rotor is within the specified range. The diesel generator set is composed of an internal combustion engine and a synchronous generator. The maximum power of the internal combustion engine is limited by the mechanical load and thermal load of the parts. It is called the rated power. The rated power of the AC synchronous generator.

Haixing generator sets often receive consultation information on the selection of power generation units from customers. Now Haixing will give some suggestions for the selection of power generation units when purchasing power generation units, hoping to help everyone. In addition, the following description will be given to many customers when using generators, water pumps, and power. 1. Because the actual output power of generators, water pumps, and power will be affected by factors such as altitude, temperature, and environmental humidity. When the altitude, temperature and ambient humidity increase, the power of the generator will drop to different proportions. Please refer to the relevant information of the generator. Please consider it when calculating the power of the generator and then purchase it to avoid insufficient power use. 2. For electrical appliances of the same power, due to the different types of electrical appliances, the starting current varies greatly, and the demand for generator power is different. Therefore, when purchasing products, users should first calculate how many high-power generators can meet normal use. Tool

The long-term use of the generator set or prompts that it needs maintenance after long use. In order to maintain the performance of the generator set and keep the generator in good condition. The following is an example of some problems a certain customer's generator has not been regularly maintained due to long-term use but has not been regularly maintained. There are these main steps for maintaining the generator. The most important thing is to fill the oil through the gas port before starting the generator. When filling, the engine should be placed in a horizontal position and pay attention to the changes in the generator oil level. Generators require the use of multi-stage viscosity engine oil because multi-stage viscosity engine oil has a wide operating temperature range and consumes about 30% lower than single-stage viscosity engine oil. After adding oil, you have to wait a while before checking the oil level on the generator oil ruler. That is, the oil level you see after the oil has flowed into the oil pan is the correct value. Each oil filter should be filled with cleaning oil before it can be installed on the engine. Representative performance grade of engine oil

Incorrect operation of diesel generators will seriously affect the service life of diesel generator sets. Now Haixing will learn with you what are the wrong operation methods of diesel generator sets in daily life? Haixing believes that correcting the wrong operation during the use of diesel generator sets in a timely manner can greatly avoid accidents, and at the same time facilitate maintenance work and extend the service life of the equipment. There are many benefits! 1: When the diesel engine is running when the oil is insufficient, it will cause insufficient oil supply on each friction pair surface due to insufficient oil supply, resulting in abnormal wear or burns. To this end, before the diesel generator starts and during the diesel engine operation, it is necessary to ensure sufficient engine oil to prevent cylinder pulling and tile burning failures due to lack of oil. 2: The diesel engine generator is shut down immediately after the load is suddenly removed, and the circulation of the cooling system water stops after the diesel engine is turned off. The heat dissipation ability is sharply reduced, and the heated parts lose cooling, which can easily cause cylinder head, cylinder liner, cylinder block and other parts.

Solve common problems of small and medium-sized generators 1. If you do not use it for a long time (more than three months) and follow the following steps to store A. Release the gasoline in the fuel tank and carburetor B. Release the oil in the crankcase C. Add new engine oil to the upper limit of oil level of the dipstick D. Close the choke and pull the starter handle to the place where there is resistance E. Wipe the unit clean and cover it with a carton or plastic cover to prevent dust－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－� When the oil is insufficient, the oil warning switch inside the engine will ground the primary coil of the ignition coil, making the ignition coil unable to ignite and the engine will turn off. How to check whether the oil level is standard: Put the engine in a horizontal position, screw out the dipstick, clean and dry it, then insert the oil addition port (no need to rotate), then pull it out, and check that the oil level is above the middle of the dipstick. －－－－－－－－－－－－－－－－

How to use diesel generator sets correctly and safely in enterprises and companies is a question that many customers have. Here, Haixing generator sets give you some suggestions: 1. Diesel generator sets must be operated by personnel who are familiar with the unit structure and master the safety operating procedures. New or newly overhauled diesel units must be run in and maintained in accordance with regulations after 60 hours of running-in and maintenance. 2. Before the new or long-term generator is put into operation, it must undergo strict inspection, mainly check the winding insulation, wiring conditions, etc. If there is any inconsistency, it will be handled. 3. After starting the diesel engine, the speed should be slowly increased. After inspection and confirm that everything is intact, it can run no-load from low speed to rated speed. When running at no load, focus on checking the oil pressure, whether there are abnormal noises, excitation current, three-phase voltage changes, etc. If there are abnormal situations, the machine should be stopped immediately for inspection. After finding out the situation, start again. If everything is normal, that is

The 'anomalous sounds' in the diesel engine and engine cylinder can be summarized into several types: piston knocking sound, piston pin knocking sound, piston bumping sound, piston bumping sound, piston bumping sound, valve knocking sound, cylinder knocking sound, etc. Then Haixing Generator Company will analyze the true faces of these 'anomalous sounds' for everyone. 1. The impact sound of the piston top and the cylinder head The abnormal sound of the piston top hitting the cylinder head is 'tap' continuous metal hitting sound, which is particularly obvious at high speeds. The abnormal sound source is in the upper part of the cylinder, its sound is solid and powerful, and the cylinder head is vibrating. The main reasons are as follows. (1) The crankshaft bearing, connecting rod bearing and piston pin holes are seriously worn, and the fitting clearance is seriously exceeded. At the moment when the piston stroke changes, the piston hits the cylinder head under the action of inertia force. (2) Because other pistons of similar specifications are accidentally installed when replacing the piston, or fake products, the distance between the center line of the piston pin hole to the top surface of the piston is greater than that of the original piston, causing the piston to bend, making the piston