A SMART A-B NipShar DMU Set arrives at Santa Rosa Station. Photo Credit: Pi.1415926535

The Nippon Sharyo DMU Set is Nippon Sharyo's one and, so far, only attempt at diesel multiple units for the North American Railroad market. The cars were first manufactured in Nippon Sharyo's Toyokawa Facility in Nagoya, Japan before final assembly in Nippon Sharyo's Rochelle, Illinois shops. They were built in time to meet Tier 4 Emission Standards using a refined version of Cummins's QSK19 engine, aptly named the "QSK19-R". The first cars were finished in 2013 following orders by both the Union Pearson Express in Canada and the Sonoma-Marin Area Rail Transit in California, with the first entering service on the UPX in 2015. However, you already know the fucky history with QSK19s. Crankshaft failures were common on the units at first. Both SMART and UPX would fix their units by 2017.

Interestingly, the units were also designed in mind to be easily converted to Electric Multiple Units. This might come in handy following California's plans to have zero-emissions on railroads by 2060.

Technical Specifications

General Info	-
Prime Mover	Cummins QSK19R
Horsepower	760
Truck Type	Nippon Sharyo Truck??? (idfk) ⚠️
Axles	4
Powered Axles	4
Minimum Weight	148,975 lbs
Maximum Weight	149,000 lbs
Model Base Speed	79 MPH
Top Speed	90 MPH

HYDRAULIC System (wait what-)	-
Torque Converter RPM	1884 RPM
Adhesion	25% ⚠️
Transition Mode	Automatic with no Selector
Generator Transition	No
Traction Control	ETC
Dynamic Braking Mode	nuh uh
DB Max Current	N/A
DB Max Continuous Current	N/A
Blended Braking	No

Miscellaneous	-
Head-End Power (HEP)	Yes (1)
HEP Power Consumption	N/A
HEP Standby/Run Mode	N/A
Load Ramp Speed	5 Amps/Tick ⚠️
TM Overload Protection	No
Start Mode	Fully Automatic Start
Air Brake Schedule	26-L
Compressor CFM	159 (Atlas GAR37 @ 2750 RPM)
Main Air Reservoir	33.8 Cubic Feet ⚠️

(1) They are DMUs lmao they don't do shit to the horsepower.