08
2023
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02
Diesel generator principle diesel generator manufacturers
Author:
First of all, the basic structure of the diesel engine: it consists of cylinder, piston, cylinder head, intake valve, exhaust valve, piston pin, connecting rod, crankshaft, bearings and flywheel and other berry parts. The diesel engine of diesel generator is generally a single-cylinder or multi-cylinder four-stroke diesel engine. Here I will only talk about the basic principle of single-cylinder four-stroke diesel engine work: diesel engine start is through human or other power to turn the crankshaft of the diesel engine so that the piston in the top of the closed cylinder for up and down reciprocating motion. The piston in motion to complete four strokes: the intake stroke, compression stroke, combustion and work (swell) stroke and exhaust stroke. When the piston from the top down the movement of the intake valve open, the air source filtered by the fresh air into the cylinder to complete the intake stroke. Piston movement from the bottom up, into the exhaust door are closed, the air is compressed, the temperature and pressure increases. Complete the compression process. The piston is about to reach the top point. Business oiler to filter the fuel to spray into the combustion chamber with high temperature and high pressure air mixture immediately on fire combustion. The high pressure formed pushes the piston to work downward, pushing the crankshaft to rotate and complete the work stroke. After the work stroke, the piston moves upward from the bottom and the exhaust valve opens to exhaust, completing the exhaust stroke. Each stroke crankshaft rotation of half a turn. After a number of work cycles, the diesel engine gradually accelerated into work under the inertia of the flywheel. Diesel engine crankshaft rotation will drive the generator rotation of power generation, generators have DC generator and alternator. DC generator is mainly composed of generator shell, magnetic pole core, armature and carbon brush, etc. Working power generation principle: When the diesel engine drives the armature of the generator to rotate, the armature coil will cut the magnetic force lines in the magnetic field due to the existence of the residual force in the core of the generator, and the current will be generated by magnetic induction and output current through the carbon brush according to the principle of electromagnetic induction. The alternator is mainly made of magnetic material, a number of north and south poles alternately arranged permanent magnets (called rotor) and silicon cast iron and wound with a number of series coils of the armature coil (called stator). Working power generation principle: the rotor is driven by the diesel machine axially cut harm magnetic lines of force. Stator in the alternating arrangement of magnetic poles in the coil core to form an alternating magnetic field, the rotor rotates a circle. The direction and size of the magnetic flux change several times. Due to the changing magnetic field, an induced current of varying size and direction is generated in the coil and delivered from the stator coil. In order to protect the electrical equipment and maintain its normal operation, the current from the generator also needs to be regulated and controlled by a regulator, etc.
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