Automobile Electrical and Electronic Systems, 5th Edition

Starting

250

In this example the power developed at 1000 rpm with a torque of 8 Nm (at the

starter), is about 840 W. Referring back to Figure 6.6 the ideal choice would

appear to be the starter marked (c).

The maximum permissible recommended battery would be 55 Ah and 255 A

cold start performance.

6.2 Starter motors and circuits

6.2.1 Starting system circuits

In comparison with most other circuits on the modern vehicle, the starter circuit

is very simple. The problem to be overcome, however, is that of volt drop in the

main supply wires. The starter is usually operated by a spring-loaded key switch,

and the same switch also controls the ignition and ...