04

n 1 _i_i_I_i_i_i_i_i_i_i_;_i_i_:_i_i_i_;_i_—u_i—:—i

?0 40 60 80 100 '20 '40 'TO '90 20T> 220 24Ü 260 ?8C »0

TEMPERAIURE,

0 10 2C » 40 50 60 70 80 90 '00 »0 12D TFWPfJRATURE,

FIGURE 19 Graphical determination of average viscosity for SAE 20 oil.

point 1 is the resultant average viscosity and temperature of the initial guess and point 2 represents the result of the second guess. Then, by drawing a straight line between points 1 and 2 and establishing where it intersects the lubricant viscosity curve, we can determine the convergence to the proper result of average viscosity and temperature.

Now that we have convergence, we can determine the remaining variables, which are the minimum film thickness HMand side leakage QS from Figure 13:

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