EMD 645-series diesel engine
E609867
The EMD 645-series diesel engine is a family of two-stroke, turbocharged locomotive powerplants widely used in North American diesel-electric locomotives from the late 1960s onward.
All labels observed (6)
| Label | Occurrences |
|---|---|
| EMD 645-series diesel engine canonical | 3 |
| EMD 16-645E3 | 2 |
| EMD 567-series diesel engine | 1 |
| EMD 567D3A diesel engine | 1 |
| EMD 645 engine | 1 |
| EMD engine | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6652055 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: EMD 645-series diesel engine Context triple: [EMD GP40-2H, primeMover, EMD 645-series diesel engine]
-
A.
EMC/EMD diesel locomotives
EMC/EMD diesel locomotives are a family of North American diesel-electric engines built by Electro-Motive Corporation/Division that played a major role in replacing steam power on many railroads.
-
B.
V-54 diesel engine
The V-54 diesel engine is a Soviet V-12, water-cooled, four-stroke diesel powerplant widely used to propel T-54 main battle tanks and their variants.
-
C.
Duramax V8 diesel
The Duramax V8 diesel is a family of turbocharged diesel engines co-developed by General Motors and Isuzu, widely used in heavy-duty Chevrolet and GMC trucks for their strong torque, towing capability, and durability.
-
D.
EMD GP7 locomotive
The EMD GP7 locomotive is a widely used four-axle diesel-electric road switcher introduced in the late 1940s that helped usher in the transition from steam to diesel power on North American railroads.
-
E.
EMD SD40-2 locomotive
The EMD SD40-2 locomotive is a highly successful and widely used North American diesel-electric freight locomotive introduced in the 1970s, known for its reliability, modular design, and long service life.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: EMD 645-series diesel engine Target entity description: The EMD 645-series diesel engine is a family of two-stroke, turbocharged locomotive powerplants widely used in North American diesel-electric locomotives from the late 1960s onward.
-
A.
EMC/EMD diesel locomotives
EMC/EMD diesel locomotives are a family of North American diesel-electric engines built by Electro-Motive Corporation/Division that played a major role in replacing steam power on many railroads.
-
B.
V-54 diesel engine
The V-54 diesel engine is a Soviet V-12, water-cooled, four-stroke diesel powerplant widely used to propel T-54 main battle tanks and their variants.
-
C.
Duramax V8 diesel
The Duramax V8 diesel is a family of turbocharged diesel engines co-developed by General Motors and Isuzu, widely used in heavy-duty Chevrolet and GMC trucks for their strong torque, towing capability, and durability.
-
D.
EMD GP7 locomotive
The EMD GP7 locomotive is a widely used four-axle diesel-electric road switcher introduced in the late 1940s that helped usher in the transition from steam to diesel power on North American railroads.
-
E.
EMD SD40-2 locomotive
The EMD SD40-2 locomotive is a highly successful and widely used North American diesel-electric freight locomotive introduced in the 1970s, known for its reliability, modular design, and long service life.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
diesel engine family
ⓘ
turbocharged diesel engine ⓘ two-stroke diesel engine ⓘ |
| aspiration |
Roots-blown
ⓘ
turbocharged ⓘ |
| bore | 9.0625 inches ⓘ |
| configuration | V-type ⓘ |
| coolingSystem | liquid-cooled ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| cycleType | two-stroke ⓘ |
| cylinderCountVariants |
12-cylinder
ⓘ
16-cylinder ⓘ 20-cylinder ⓘ 8-cylinder ⓘ |
| cylinderDisplacement | 645 cubic inches per cylinder ⓘ |
| displacementPerCylinder | 10.57 liters ⓘ |
| fuelType | diesel fuel ⓘ |
| governingSpeedRange | up to about 900 rpm ⓘ |
| introducedAfter |
EMD 567D3A diesel engine
ⓘ
linked to:
EMD 645-series diesel engine
|
| introducedInDecade | 1960s ⓘ |
| manufacturer |
Electro-Motive Division
ⓘ
General Motors Electro-Motive Division ⓘ
linked to:
Electro-Motive Division
|
| notableFeature |
compatibility with EMD 567-series engine mounts
ⓘ
high reliability in railroad service ⓘ modular power assembly design ⓘ |
| notableUser |
North American freight railroads
ⓘ
linked to:
North American rail network
|
| powerRange | 1500 to 3600 horsepower ⓘ |
| predecessor |
EMD 567-series diesel engine
ⓘ
linked to:
EMD 645-series diesel engine
|
| primaryUsePeriod | late 1960s onward ⓘ |
| scavengingType | uniflow scavenging ⓘ |
| stroke | 10 inches ⓘ |
| successor | EMD 710-series diesel engine ⓘ |
| typicalApplicationsRegion | North America ⓘ |
| usedIn |
diesel-electric locomotive
ⓘ
marine application ⓘ stationary power plant ⓘ |
| usedInLocomotiveSeries |
EMD F40PH
ⓘ
EMD GP15 ⓘ EMD GP38 ⓘ EMD GP39 ⓘ EMD GP40 ⓘ EMD GP50 ⓘ EMD SD38 ⓘ EMD SD39 ⓘ EMD SD40 ⓘ
linked to:
EMD SD40-2 locomotive
EMD SD40-2 ⓘ
linked to:
EMD SD40-2 locomotive
EMD SD45 ⓘ EMD SD50 ⓘ |
| valvetrain | uniflow scavenged ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: EMD 645-series diesel engine Description of subject: The EMD 645-series diesel engine is a family of two-stroke, turbocharged locomotive powerplants widely used in North American diesel-electric locomotives from the late 1960s onward.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: EMD 645-series diesel engine
subject linked to:
EMD SD40-2 locomotive
linked to: EMD 645-series diesel engine
subject linked to:
Class 57 diesel locomotive
linked to: EMD 645-series diesel engine
linked to: EMD 645-series diesel engine
linked to: EMD 645-series diesel engine
linked to: EMD 645-series diesel engine