Page 610 - Foton Workshop Manual - Auman EST-M

EG - 94 Engine section – Engine (Cummins ISF3.8)

Crankshaft and flywheel

Overview
The crankshaft is the most important part of the engine. It receives the force from the connecting rod and
converts it into torque that is output through the crankshaft and drives the other attachments on the engine.
The crankshaft is subjected to centrifugal force of rotating mass, inertial gas force and reciprocating inertial
force in periodic change, so that the crankshaft is subjected to the function of the bending torsion load.
Therefore, the sufficient strength and stiffness are required for the crankshaft, the journal surface shall be
wear-resistant, uniformly works and has good balance.
The flywheel with inertia of rotation is mounted on the back end of the engine crankshaft, it plays the role of
storing the engine energy to overcome the resistance of other components and make the crankshaft rotate
evenly; the engine and the car transmission are connected by the clutch mounted on the flywheel to connect
with the starter for starting the engine.

EG-094