Should the gravity fall below 1.150 the gas motor should be given a long run to restore the battery.
CHAPTER XXIV
NORTH EAST STARTER SYSTEM USED ON DODGE BROTHERS’ CARS
The North East starter system shown in [Fig. 911⁄2] comprises the North East Model G starter-generator and the combined starting switch and reverse current cut-out. This equipment serves to start the engine and provide current for the lamps and other electrical accessories as well as for the ignition system. The battery as the source of current while the engine is not in operation or is running slowly; but at all engine speeds above 350 R. P. M. the starter-generator supplies current for the entire electrical system.
Wiring.—In the accompanying wiring diagrams the starting circuit is represented by the very heavy cables; the charging circuit, where it does not coincide with the starting circuit, by the cables of medium weight, and the lighting and the ignition circuits by the light cables. As will be seen from the diagrams, the starting circuit extends from the positive terminal of the battery to the starting switch, and thence, when the switch is closed, through the starter-generator armature and field coils back to the negative terminal of the battery by way of the grounded negative starter-generator terminal, the car frame, and the battery ground connections. The charging circuit is identical with the starting circuit except at the starting switch, where instead of passing from one switch terminal to the other through the switch contactor it extends through a parallel path which includes the reverse current cut-out and the charging indicator. The cable leading to the lighting and ignition switch is attached to the positive terminal of the indicator. From this switch the lighting and the ignition circuits become distinct, and each, after passing through its proper course, reaches the car frame and returns through it to the source of supply.
| Charging Indicator | Lighting & Ignition Switch | Dash Lamp | |||||||
| Horn | |||||||||
| Head Lamp | GroundTail Lamp | ||||||||
| Ground | Horn Button | Starting Switch and Reverse Current Cut-out | |||||||
| Ground | Ground Connection | Ground | |||||||
| Head Lamp | |||||||||
| Battery | |||||||||
| Ground | Starter-Generator | Ground Connection | |||||||
Fig. 911⁄2. Dodge Wiring Diagram
Without exception all the connections of the starting and lighting system must be made as indicated in this diagram if entirely satisfactory results are to be obtained from the equipment.
Starter-Generator ([Fig. 92]).—The starter-generator is mounted on the left side of the engine by means of an adjustable support and a clamping strap. It runs at three times engine speed, operating directly from the crank shaft through a silent chain drive. Being a single unit machine, it employs but one armature with only one commutator, one set of field windings and one set of brushes for the performance of all of its functions both as a starter and as a generator.
While starting the engine it acts as a cumulatively compounded motor; but while serving as a generator it operates as a differentially compounded machine with its output positively controlled through the agency of a Third Brush Regulating system, supplemented by the differential influence of the series field upon the shunt field.