Figure 5.3 How the demands on the alternator have changed
relay. The factor of 0.1 is therefore applied to the total intermittent power
requirement, for the purpose of further calculations. This assumes the vehicle
will be used under normal driving conditions.
The consumer demand on the alternator is the sum of the constant loads, the
prolonged loads and the intermittent loads (with the factor applied). In this example:
180 + 260 + 170 = 610 W (43 A at 14 V)
The demands placed on the charging system therefore are extensive. This
load is in addition to the current required to recharge the battery. Further
sections in this chapter discuss ...
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