diesel locomotive
Let an agent identify a diesel locomotive by class, transmission and duty, relay specifications, operators, emissions and safety rules from official sources, and separate diesel locomotives from multiple units, electric locomotives and railcars.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent identify a diesel locomotive by class, transmission and duty, relay specifications, operators, emissions and safety rules from official sources, and separate diesel locomotives from multiple units, electric locomotives and railcars.
A railway locomotive whose prime mover is a diesel engine, with power transmitted to the wheels electrically through generators and traction motors, hydraulically through torque converters, or mechanically through gearboxes; diesel locomotives replaced steam on most non-electrified lines from the mid twentieth century and are built in classes for freight, passenger and shunting duties.
What it is for: Hauling trains on non-electrified lines.
It can be identify class, builder and transmission type; relay power, weight and speed figures; explain how the transmission works; relay emissions and safety regulation.
Distinguishing features
Diesel prime mover
Electric, hydraulic or mechanical transmission
Self-contained fuel supply
Classes for freight, passenger and shunting
What it looks like
A locomotive with a diesel engine housed in a body or hood, exhaust on the roof, and cabs at one or both ends.
Physical character
power: 200-4500 kW - from shunters to heavy freight units
mass: 30-200 tonnes
maximum speed: 30-200 km/h - by duty
How it is recognised
No pantograph or third rail shoe
Engine compartment and roof exhaust
Diesel multiple units carry passengers themselves and are a separate entry
Related models
is a kind of - the general class
is powered by - the prime mover
is contrasted with - draws power from the line
is confused with - self-propelled passenger train
In practice
Families and kinds
diesel-electric locomotives
diesel-hydraulic locomotives
diesel-mechanical shunters
road switchers and hood units
streamlined passenger diesels
national classes by operator
Identifiers
class and running number operator scheme
UIC vehicle number 12 digits in Europe
Standards and regulation
Emissions standards for non-road engines such as EU Stage V and US Tier 4
Railway safety and vehicle authorisation rules
EU technical specifications for interoperability
Noise regulations
Failure modes and hazards
Engine and transmission failures
Fires and fuel leaks
Exhaust emissions and noise
Confusing classes across operators
Also called
+841
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Identify Which locomotive.
Identity.
Class
Class and builder.
Class
Class.
- Which class is this, who built it, and which operator runs it? definition
- Is the vehicle a locomotive, a multiple unit or a railcar? boundary
Specification
Specifications.
Specification
Specification.
- What are the power, weight, speed, axle arrangement and fuel capacity? measurement
- Which official source gives them? provenance
Work How it works.
Engineering.
Transmission
Transmission.
Transmission
Transmission.
- How do electric, hydraulic and mechanical transmissions carry power to the wheels? definition
- Which entry fits traction motors? action
Operation
Operation.
Operation
Operation.
- How is the locomotive driven, fuelled and maintained, in general terms? provenance
- Which entry fits railway operations? action
Rules Regulation and safety.
Regulation.
Emissions
Emissions and noise.
Emissions
Emissions.
- Which emissions and noise standards apply to diesel locomotives? provenance
- Which entry fits emissions regulation? action
Safety
Safety.
Safety
Safety.
- What safety rules and authorisation apply to the vehicle? provenance
- Which entry fits railway safety? action
Context History and future.
Context.
History
History.
History
History.
- How did diesel locomotives replace steam, and how did designs develop by region? provenance
- Which references are standard? provenance
Future
Alternatives.
Future
Future.
- How are battery, hydrogen and hybrid locomotives changing the picture, with claims attributed? provenance
- Is the presentation neutral? boundary
What the second pass must settle
- Should transmission types be separate entries?
- How should operator class lists be linked?
- The registry entry has merged aliases naming specific classes; should they be split off?