Tuesday, 1 December 2015


The internal combustion engine is of high importance in industrial civilization. It works to burn the fuel inside the engine and convert the generated energy into the motion. The fuel used is either gas or diesel. There are different types of internal combustion engine available in the market, but they have the same basic components and work on the same basic principle.


A piston is the moving component that is contained by a cylinder and is made gas-tight by piston rings. Cummins Piston rings are used to identify a two stroke or four stroke engines. It comprises of compression ring, wiper ring and oil ring. High quality die- or gravity-cast aluminum alloy is used in Piston manufacturing. It is light weight, has good structural integrity and reduces overall mass and force.

Piston reciprocates up and down in a cylinder, compressing an air/fuel mixture and then exerting force from the controlled explosion of that mixture downward onto the connecting rod and crankshaft.

Connecting Rod

High quality steel alloy is used in manufacturing cummins connecting rods which helps in bearing heavy loads without getting twisted, snapped or bend.

The connecting rod is attached to the bottom of the piston by a mechanism that allows is to rotate in a flat plane. Its other end is attached to the crankshaft. When the piston goes down, the connecting rod moves in a motion that forces the crankshaft to turn.


Cummins Crankshaft consists of a rotating shaft with several "crank pins" placed at different angles. Crank pins are so placed that its axis is offset from the axis of the rotating shaft.

The crankshaft is connected to the pistons by the connecting rods, the force generated by the burning fuel air mixture is transferred to the crankshaft and converted to rotary motion which is transferred in the form of torque to clutch and thereby  gearbox and wheels.


Valves are so scientifically designed that they provide maximum strength and durability.

Valves function to control the entry of fuel and air into the combustion chamber and exit of exhaust gases from the combustion chamber. These functions should be carefully timed to ensure that the entry of the fuel, the burning of the fuel, the movement of the piston and the exit of the exhaust all happen in the right order.

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