. Official proceedings . xcloiimciU tor locomotive andrail car serxice of two stroke cycle engines of unusually lowweight ])er horsejxjwer. Xo kss than six or eight Diesel en-gine builders haxe amiounced engines lor tr.:ns])ortation engines range in horse]n)\\er trom •>(> to and inS])eed from fiOO to Mn) RPM. The Diesel engine his, iidierenlly, C(Uistant torcjue char- 135 acteristics, whereas the torque required at the wheels of a loco-motive varies over a A\ide range. Therefore, whatever form oftransmission is used between the Diesel engine and the wheelsof the loco
. Official proceedings . xcloiimciU tor locomotive andrail car serxice of two stroke cycle engines of unusually lowweight ])er horsejxjwer. Xo kss than six or eight Diesel en-gine builders haxe amiounced engines lor tr.:ns])ortation engines range in horse]n)\\er trom •>(> to and inS])eed from fiOO to Mn) RPM. The Diesel engine his, iidierenlly, C(Uistant torcjue char- 135 acteristics, whereas the torque required at the wheels of a loco-motive varies over a A\ide range. Therefore, whatever form oftransmission is used between the Diesel engine and the wheelsof the locomotive must be capable of transforming the powerdelivered bv the engine in the form of constant torque and con-stant speed into power at the locomotive wheels which mayhave a wide range in torque and an ec|ually wide range in transmission involves some form of clutch and thenumber of gear ratios is limited. Hydraulic transmission re-quires the use of packings and involves cooling of the licpiid. Busch-Sulzer 1600 HP Diesel Engine; transmission medium. Electric transmission has an infinitenumber of gear ratios, is capable of transmitting unlimitedamounts of power, and has practically as high efficiency as anyother form of transmission. It is now used almost universallyon locomotives of 300 or more horsepower. The electric transmission consists primarily of a generator,usually directly connected to the engine, a number of motorsgeared to the axles, and a control system for connecting themotors to the generator. One of the big advantages of theDiesel electric locomotive over its steam rival lies in its abilityto exert its full power over a wide range of locomotive speeds. 136 The in speed (>\er which tliis is accomplished is deter-mined l)y the characteristics of the electrical equipment. The simplest iorm of transmission consists of a differen-tially wound series compound generatf^r and four tracticjn mo-tors which may be connected in series and in pa
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Keywords: ., bookauthorrailwayc, bookcentury1900, bookdecade1900, bookyear1901
