Diesel Generator Tech

Each generator brand has its own oil mist protection system. Its main protection element is the oil mist detector, which can timely detect whether the generator has oil mist formed in the generator crankcase due to excessive air leakage and other faults caused by bearing overheating or piston ring damage, so as to monitor whether the main operating components of the generator, crankshaft and cylinder, work normally. During the operation of the   generator , it continuously extracts the oil and gas in the crankcase through the sampling pipeline system and sends them to a sensitive and accurate concentration measuring device. The photoelectric diode senses the light intensity generated by infrared radiation and converts the generator's light intensity signal into an electrical signal to be sent to the electronic identification device. If the gas in the generator crankcase contains oil mist, the opacity of the measurement channel of the concentration measurement device will increase. ...

In the work of Volvo diesel generator, external factors often play a role through these characteristics of diesel generator, making relevant parts fail. Due to the structural characteristics of the water jacket of Volvo diesel generator, under the action of high temperature, the cooling water forms scale on the outer wall of the cylinder liner, which affects the cooling effect of the diesel generator cylinder liner. The working characteristics of mechanical parts may cause wear of the diesel generator due to friction. During the working process, the piston ring of the diesel generator of Volvo moves in the cylinder at a high speed and in a straight line, causing the cylinder of the diesel generator to wear. During operation, temperature changes are severe, and thermal stress causes deformation and cracks. During the operation of the diesel generator, due to the influence of the ejector pin, the internal stress of the cylinder block and cylinder head of the diesel generator is redistrib...

  Today Starlight Power factory tell you how to inspect piston ring of diesel generator, hope this article is helpful to you.   In order to ensure that the diesel generator piston ring, piston ring groove and cylinder wall of a good fit, large piston ring files should not be used as small for engine repair. The piston ring with the same repair level as the cylinder and piston should be selected according to the repair size of the cylinder. At the same time, the opening clearance, side clearance, back clearance, elasticity and light leakage of the selected piston ring should be checked.   1. Maintenance method of opening clearance Diesel generator  piston ring  opening clearance refers to the clearance between the two ends of the ring opening after the piston ring is installed in the cylinder, so it is also called end gap. It is used to prevent the piston ring from being stuck in the cylinder due to thermal expansion. When checking the piston ring opening clearan...

The ventilation environment of a diesel generator se t is an important condition to ensure its working environment temperature. However, in order to ensure good ventilation, dustproof measures must be taken, which requires   certain requirements on ventilation. So what are the ventilation requirements of the diesel generating set?   1. Ventilation requirements for diesel generator set Space The location of the generator room should be as far away from the residential area as possible to reduce the impact of the noise and emissions of the unit on the residents. The generator room should be built on an open site as far as possible to facilitate the access and ventilation and heat dissipation of the unit and accessories. The space of the machine room should fully consider the volume of the unit and accessories to ensure that the unit and accessories have sufficient installation space.   Dust-proof design   Good ventilation, dust-proof performance will in...

Generator plays an important role in our life. It is widely used in various fields. In this article, we mainly talk about generator use place. if you are interested, please continue reading. 1. Camping Whether it’s a generator for RV camping or the good old-fashioned, open-air variety, these machines add a touch of civilization to the rugged outdoors. You may want to power an electric skillet, lights, a fan, or an electric fillet knife for those fresh-caught fish, so you won’t need too much generating capacity.   Inverter generators are a popular choice for camps as they’re quiet, often a must-have as many campsites have strict noise limits. They’re also lightweight and compact, although they are often more expensive than other models.   2. Construction As one might imagine, construction sites are often cut off from readily available power supplies. But that doesn’t mean everything gets done by hand. Huge diesel generators are often trailed in to support the machi...

What is a Generator? A generator is a machine that converts available mechanical energy into electrical energy. It works on the principle of Faraday’s Law of Electromagnetic Induction. Based on the output obtained, we classify generators as:   AC Generators or Alternators AC generator, also known as alternators, is a machine that converts mechanical energy into electrical energy. The generated electrical energy is in the form of an alternating current sinusoidal output waveform. The mechanical energy is usually supplied by steam turbines, gas turbines and combustion engines.   AC generators work on the principle of Faraday’s law of electromagnetic induction which states that electromotive force -EMF or voltage – is generated in a current carrying conductor that cuts a uniform magnetic field. This can either be achieved by rotating a conducting coil in a static magnetic field, or by rotating the magnetic field that contains the stationary conductor. The preferred a...

After generator starts up, there is no voltage, the most possible reason is the generator has no magnetic field. Why is there no magnetic filed in generator? Fault phenomenon: After standby generator set idle for a long period of time, when restart, there is no AC voltage output. Measure the main output winding, and the voltage between phases is "0" or lower than "5vac". The reason: Generator has not been used for a long time, resulting in losing remanence contained in iron core. The excitation coil can't establish the proper magnetic field. At this time, the generator set runs normally but does not generate voltage. This kind of fault often occurs in new generator set, generator set stored in humid environment or generator set not used for a long time. How to deal with no magnetic field problem of generator? 1.Check the main output circuit of the generator to avoid the excitation cannot be established due to the short circuit at ...

Startup operation 1. Press the start button to start the standby generator . At the same time, pay attention to the presence of mechanical noise, abnormal vibration and so on. 2. During operation, the operator closely monitors the voltage, frequency, current, power factor, oil temperature, oil pressure, water temperature, charging current, speed and other instrument instructions and changes of generator set through the instrument. When the specified value is exceeded, timely inspection and measures should be taken, and the operation can be continued only after returning to normal. 3. The emergency stop button on the control screen panel is only used in case of emergency. After pressing the button, the generator will stop immediately and sound-light alarm will be issued at the same time. 4. After the generator runs normally, close the main switch (low-voltage air switch) of the generator set, and the generator supplies power to the electrical load. Shut down 1. Af...

Diesel generator sets can be divided into two types according to the use situation: one is based on mains power, generator set standby power supply equipment and the other is generator-based power supply equipment. To ensure that the genset is in good condition and prolong the service life of the machine, the technical maintenance system of the diesel engine must be implemented. The technical maintenance categories are divided into: First level maintenance inspection (daily or weekly) Secondary maintenance inspection (every 250 hours or one month) Level 3 maintenance inspection (every 1500 hours or half a year) The standby generator should run regularly for about 10 minutes, so as to evaporate the water in the diesel engine body and achieve moisture and corrosion protection. First level maintenance inspection 1. Check oil level. Use a diesel oil dipstick to check the oil level. In order to obtain accurate readings, the oil level should be checked when th...

There are many forms of generator, but the working principle is based on the law of electromagnetic induction and the law of electromagnetic force. Therefore, the general principle of its construction is to use appropriate magnetic conductive and conductive materials to form magnetic circuits and circuits for mutual electromagnetic induction to generate electromagnetic power and achieve the purpose of energy conversion. Working principle of alternating-current generator The mechanical energy of the prime mover is converted into electrical energy output by using the principle of electromagnetic induction in which the cutting of magnetic lines of force by a wire induces electric potential. A synchronous generator consists of a stator and a rotor. The stator is the armature that emits power, and the rotor is the magnetic pole. The stator is composed of armature iron core, three-phase winding with uniform discharge, base and end cover. The rotor is usually a hidden pole type...

Why a generator fails to produce electricity? 1. The residual magnetism of the generator core is disappeared or too weak. The residual magnetism can be lost naturally when the genset is placed too long or it can also happen from running a generator with no load for too long. However, for the new genset , the residual magnetism can be lost due to a long distance transportation vibration. Thus, it will cause the remanence voltage of generator is disappeared or less than normal remanence voltage value, namely, the remanence line voltage is less than 10V, the remanence phase voltage is less than 6V. Because the stator of synchronous generator, rotor, as well as AC exciter stator, and rotor core are usually folded by adopting 1~1.5mm thick silicon steel sheet. After excitation vibration, the residual magnetism is easy to disappear or weaken. When the residual magnetism is lost, the generator will produce no power at start-up. 2. Excitation circuit wiring error The polar...

Starlight Power will guide you to learn the common reasons your generator cannot start. 1) It’s low on oil Check the oil level in the crankcase. Add oil if the level is low. Keep in mind that attempting to run the generator on an uneven surface might cause the low-oil sensor to trigger despite there being enough oil. 2) It’s out of gas Check the gas tank to make sure a sufficient amount of gasoline remains in the tank. Add fresh gasoline when necessary (to avoid clogs and hard starts, do not use old or stale gasoline. If the gasoline is older than two months, replace it with fresh gasoline). 3) The choke lever is in the wrong position The choke of any engine should be set to “closed” during startups and then moved to “open” once the engine warms up. Depending on the style of your generator, this choke lever may be positioned in a few different places. On many generators, it can be found directly above the air filter on the side of the unit. On others, the chok...