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Pay attention to the way in which the translational
motion of the piston under the action of the pressure of gases
turns into a rotary motion of the crankshaft and vice versa.
Read the designation and design features of the parts of
the piston group (piston, piston rings, piston pin), connecting
rod (connecting rod, connecting bearings, connecting rod
bolts).
Pay attention to the mutual placement of individual
elements of the crankshaft (native and connecting cranks,
cheeks, counterweights), on the axial fixation of the crankshaft.
It should be understood in what cases usage the term
"crankshaft", and when the "crank".

4.4 Individual task. Each student, on condition of
receiving a positive assessment during a poll in the classroom,
receives an individual task for laboratory work. Below is a list
of individual tasks:
4.4.1 Measure the diameter of the cylinder, the root, the
crank crank crankshaft, the crank radius, the diameter and
stroke of the piston, the kinematic length of the connecting rod.
4.4.2 Measure the displacement of the piston in a given
cylinder from the upper dead point when the crank is rotated to
a given angle.
4.4.3 Draw on a scale the kinematic scheme of the crank
mechanism during rotation of the crank to a given angle.
4.4.4 Draw a sketch of a piston, a crankshaft, a
connecting rod with the drawing of characteristic sizes.
4.4.5 Determine the dimensions of the cylinder, piston
and head of the cylinder block according to the actual
dimensions of compression.
4.4.6 Construct a graph of displacement, speed and
acceleration of the piston from the angle of the crank.

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