Temperature Analyses in Mechanical Tranmissions 845137
Examinations of the temperature characteristics of commercial
vehicle transmissions at different loading functions (duty cycles)
are shown both mathematically and experimentally.
A detailed analysis of the losses which occur is contained in
the theoretical section. Considerable sources of loss and heat are
found to be power transmitting gears, immersion and bearing losses
and losses due to shifting equipment. Following this, the heat
dissipation is examined. Finally, a method of calculation is
carried out using a given dynamic duty cycle, so that the resultant
temperature cycle can be calculated.
In the experimental section, reports on test criteria and
temperature measurements from the test bench and from test routes
are given. Optimization possibilities, which can lower the
temperature, are shown, such as the quantity of lubricating oil and
cooling fins on the housing.