The connecting rod connects the crankshaft and the _______.

Question

Question

This question was previously asked in

RRB ALP Mechanic Diesel 21 Jan 2019 Official Paper (Shift 1)

Answer 1

Explanation:

Connecting rod:

It is fitted in between the piston and crankshaft.
It converts the reciprocating motion of the piston to the rotary motion in the crankshaft.
It must be light and strong enough to withstand stress and twisting forces.

Construction:

The connecting rod is made of high-grade alloy steel.
It is drop-forged to an ‘I’ shape.
In some engines aluminum alloy connecting rods are also used.
The upper end of the connecting rod has a hole for the piston pin.
The lower end of the connecting rod is split so that the connecting rod can be installed on the crankshaft.
The top and bottom halves of the lower end of the connecting rod are bolted together on the big end journal of the crankshaft, by bolt and nut.
A large bearing area is provided to take the load, heat, and wear.
The split halves are usually fitted with Babbit bearings or bearing lining steel-backed copper lead.
In the upper end of the connecting rod, a bronze bush is fixed.
The small end of the connecting rod is connected to the piston by means of a piston pin.
In some engines, a hole is drilled in the connecting rods from the big end to the small end.
It allows oil to flow from the big end to the small end bush.