Generator and its Parts.

By Chief Engineer Riaz Marghoob's Lecture On

Generator and its parts

It was the Daihatsu Generator.


There are two sides of the generator.
Electrical Side. (part after the flywheel)
Mechanical Side.

MECHANICAL SIDE
Cylinder Head is the top cover of the cylinder and contains following parts.
Rocker Arm.
Cylinder Relief Valve.
Exhaust Valve.
Air Starting Valve.
Fule injector.
Indicator Cock. (Indicates the inside position of the cylinder)
Push Rod
Turbo Charger is attached with the generator and is responsible for removing the burnt gasses from the cylinder and filling it with the fresh air. The more the fresh air in the cylinder the more will be the generator's efficiency.


Sump at the lower part of the engine contains lube oil for lubrication of Crank Pin Bering, main Bearing, cross head and Piston and cylinder liner.


There are two types of lubrication methods:
Splash Lubrication.
Forced Lubrication.

Splash Lubrication:

Splash lubrication takes place by the splashing due to the movement of the crank shaft.



Forced Lubrication:

For forced lubrication lube oil pump is required which pumps the lube oil through the connecting rod into the gudgeon pin hole through which it is released and lubricates the area between the piston and cylinder liner.



In both cases lube oil filter is attached to remove any impurity from the lube oil.


Fule pump is placed on the right hand side of the governor and is used to pump the fuel in the pipe over the cylinder head


Like a lube oil filter there is also a fuel oil filter which is used to filter the fuel oil.


Lube oil cooler is present to maintain the temperature of lube oil.


Piston contains two different types of ring attached in differnt combination depending upon the construct.
Compression Ring.
Scrapper Ring Or Oil Ring

Compression Ring:

It is used to restrict the hot gasses from entering into the sump.



Scrapper Ring:

It is responsible for creating a film of lube oil and scrap the lube oil into the sump from the liner.



Before attaching the ring make sure of the correct side of the ring to be at the top. Some times it is written on the ring "This Side Top."


Camshaft is present above the crank shaft and operates the rocker arms above the valve via push rod. It operates the push rod which further operates the rocker arm which further operates the spring loaded valves on cylinder head.

FOR ELECTRICAL SIDE PLEASE REFFER TO DOC. 1 ATHER RIZVI's LECTURE.

Written by Ali Ahmed