Diesel generator set is mainly composed of body components and crank connecting rod mechanism, valve mechanism and intake and exhaust system, fuel supply system, lubrication system, cooling system, starting device and other mechanisms and systems.
1, the body: is the skeleton of the diesel engine, by which to support and install other components, including: cylinder block, cylinder liner, cylinder head, cylinder cushion, oil pan, flywheel housing, timing gear housing, front and back feet.
2 Crank connecting rod mechanism: it is the main moving part of the diesel engine, which can convert the energy generated by fuel combustion into mechanical energy through the piston, piston pin, connecting rod, crankshaft and flywheel. Including crankshaft, connecting rod, piston, piston pin, piston pin circlip, piston pin bushing, piston ring, main shaft, connecting rod, thrust bearing, crankshaft front and rear oil seal, flywheel, shock absorber, etc.
3. Valve mechanism and intake and exhaust system: The valve mechanism is composed of the valve group (intake valve, exhaust valve, valve guide, valve seat and valve spring, etc.) and the transmission group (tappet, tappet, rocker arm, rocker arm shaft, camshaft and timing gear, etc.). The intake and exhaust system is composed of the air filter, intake pipe, exhaust pipe and muffler, etc. The role of the valve mechanism and intake and exhaust system is according to certain requirements. Timely open and close the intake and exhaust valves, discharge the exhaust gas in the cylinder and suck fresh air to ensure the smooth air exchange process of the diesel generator set.
4, fuel supply system: the role of the fuel supply system of the diesel generator set is to inject a certain amount of diesel into the combustion chamber and air at a certain pressure within a certain period of time in order to burn and do work. It is mainly composed of diesel tank, oil delivery pump, diesel filter, fuel injection pump (high pressure oil pump), fuel injector, governor and so on.
5, lubrication system: the function of the lubrication system is to send the lubricating oil to the friction surface of the moving parts of the diesel generator set, which plays the role of anti-friction, cooling, purification, sealing and rust prevention to reduce friction resistance and wear, and take away the heat generated by friction, so as to ensure the normal operation of the diesel generator set. It is mainly composed of oil pump, oil filter, oil radiator, various valves and lubricating oil passage.
6, cooling system: the function of the cooling system is to transfer the heat from the heated parts of the diesel generator set to keep the diesel generator set working at the most appropriate temperature to obtain good economy, power and durability. The cooling system is divided into two types: water cooling and air cooling. Most diesel generators use water cooling systems, which use water as a cooling medium. There are also a small number of diesel generators using air cooling systems. The wind cooling method is also called the air cooling method, which uses air as the cooling medium to transfer the heat of the heated parts of the diesel generator set. This cooling method is composed of fans and air hoods, etc. In order to increase the heat dissipation area, heat sinks are usually cast on the cylinder head and cylinder body.
7, starting device: the diesel generator set can not start by itself, must use external forces to make it operate fire burning, in order to achieve self-operation state. Therefore, the diesel generator set must be equipped with a special starting device. The hand-started diesel generator set is provided with a starting claw; Motor starting is equipped with a starting motor; A compressed air starting device, etc.
Post time: Jul-17-2023