. The Street railway journal . t at a constant speedof the engine, irrespective of the varying load demands ofthe vehicle. In other words, the product of volts andamperes of the output is at all times constant, for as theamperes load demand increases the volts correspondinglydecrease, so that the load and, therefore, the speed of theengine remain unaltered. This result is obtained automat-ically by a suitable arrangement and design of the windings,and without the use of moving contacts. The generator iscoupled to a 35-hp engine and is normally rated at 15 kw. proper. The latter is located clos
. The Street railway journal . t at a constant speedof the engine, irrespective of the varying load demands ofthe vehicle. In other words, the product of volts andamperes of the output is at all times constant, for as theamperes load demand increases the volts correspondinglydecrease, so that the load and, therefore, the speed of theengine remain unaltered. This result is obtained automat-ically by a suitable arrangement and design of the windings,and without the use of moving contacts. The generator iscoupled to a 35-hp engine and is normally rated at 15 kw. proper. The latter is located close to the motors and gen-erators to reduce the length of the connecting cables to aminimum. The controller provides two forward speedpoints corresponding to the series and the parallel connec-tion of the motors, and one reverse speed point with themotors in series. In the operating box is mounted a small resistance andcontrol switch, electrically connected in circuit with thegenerator field coils. A pedal is coupled to both the. FIG. 1.—GASOLINE MOTOR CARS engine, governor and to the control switch, so when thepedal is fully depressed the engine is governed to run at400 r. p. m. and at the same time the switch is moved toinsert in the generator field circuit a resistance sufficient toreduce the main volts to practically zero. No current,
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
