SoundTraxx QSK19C x3 - Manual (Page 5)

Tsunami User’s Guide for the Cummins QSK19C x3 (GenSet) Page 2
Using Your Tsunami Cummins QSK19C x3
(GenSet) Digital Sound Decoder
Your SoundTraxx Tsunami with multiple Cummins QSK19C prime movers
for GenSet Locomotives has been shipped with all the CVs pre-programmed
so you can begin using your locomotive immediately without having to worry
about making adjustments. However, the software for this decoder is as
unique as the prototype, and we have several special features to enhance
the experience of running your GenSet.
This decoder has individual sound channels for each of the locomotive’s
three prime movers. We recorded this decoder’s sounds directly from the
Cummins QSK19C prime movers of the NRE 3GS-21B Locomotive. NRE
released the prototype in 2007 to meet California’s air quality standards by
using Generator Set, or GenSet, technology with multiple prime movers that
are switched on and off as needed for power. This setup results in significant
fuel savings and emission reductions.
Operation Overview
This decoder has operational features specific to the prototype. The
following section describes these features and their uses. Additional
programming information can be found in the Tsunami Diesel Technical
Reference.
Prime Mover Operation
Using extensive research, the operating characteristics of this decoder have
been set up to correctly match the operation of the prototype prime movers.
For example, when the locomotive is idling, only one prime mover is switched
on. The other prime movers kick on and off progressively as needed when
the locomotive throttle is notched up or down. When notching down, the
prime movers go to idle and then have an internal timer to simulate “cooling
off” as they shut down. Please refer to the Prime Mover Operation Chart on
the next page for throttle notch settings.
Operation