
64 LIGHT AND HEAVY VEHICLE TECHNOLOGY
Figure 2.13 Crankshaft assembly of
a
long-established design of diesel engine (Gardner)
contrary behaviour are explained later where the dis-
tinction will be made between the predominant sources
of loading on diesel and petrol engine bearings. These
are cylinder gas pressures and inertia forces of the
reciprocating parts respectively, always remembering
that the inertia forces vary as the square of the engine
speed and are virtually unopposed by cylinder gas
pressure on the exhaust strokes.
Until recent years, the lining material requirements
for diesel big-end and main bearings could usually be
satisfie ...