The crankshaft investigated in this study is shown in
Figure 1 and belongs to an engine with the configuration
shown in Table 1 and piston pressure versus crankshaft
angle shown in Figure 2. Although the pressure plot
changes for different engine speeds, the maximum
pressure which is much of our concern does not change
and the same graph could be used for different speeds
[9]. The geometries of the crankshaft and connecting rod
from the same engine were measured with the accuracy
of 0.0025 mm (0.0001 in) and were drawn in the I-DEAS
software, which provided the solid properties of the
connecting rod such as moment of inertia and center of
gravity (CG). These data were used in ADAMS software
to simulate the slider-crank mechanism. The dynamic
analysis resulted in angular velocity and angular
acceleration of the connecting rod and forces between
the crankshaft and the connecting rod.