EMD G22 Series
RFFSA MACOSA G22U #4392-6L pulling a passenger train in the Ferrovia Curitiba–Paranaguá line. | |||||||||||||||||||||||||||||||
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The EMD G22 Locomotive Series made their debut in 1967 after the rise in popularity of the export EMD G12. Designed to meet most First World, Second World and Third World countries, the G22 Series were now equipped with a naturally aspirated EMD 645 Series engine as well as four axle Flexicoil Type-B trucks which carry a low per-axle weight. Based on customer input, the G22 Series would be defined by various designations that suit the customer's railway operations.
The standard suffixes applied after the G22 designation were if the customer purchased locomotives with specific traction motors to fit Narrow Gauge (U) or Broad Gauge (W) rails. As the years progressed, the customers began to have more options available for their locomotives such as EMD Dash 2 Electronics, Alternators instead of Generators, A-1-A running gear and/or steam generators, etc.
The G22 designation can freely apply to the designs of any EMD export model or a licensee of EMD as long as the electrical and mechanical gear were left unaltered.
Overview
With the introduction of the 645 engine in export models in 1967, the model numbers changed by adding "10". Thus the G12 now became the G22. This new model was an upgrade from the 567 series G12 and brought forward various innovations for almost four decades. To this day, the G22 series is the most common diesel found in Brazil, New Zealand and in Egypt.
The G22 Series was one of the first models to be commonly constructed outside of the United States and to have its own separate designation based on traction motors/gauge, generator, etc. Unlike the G12, which its six axle version was the GR12, the six axle version of the G22 Series was designated as G22C. The customer then had options to apply on the locomotive as desired.
Several models were introduced:
- G22W
- G22U
- G22W-AC
- G22W-2
G22W
The G22W first appeared in 1967. To separate itself from its predecessor, the G22W was identified by a W suffix to indicate that this model was supplied with traction motors adjustable only for Wide gauged rails (Standard gauge up to Indian gauge).
The G22W model found success among several buyers and were also built in different countries to suit the customers needs. One notable difference in the carbody design came with the order of Swedish G22Ws. Completely redesigned to meet the Scandinavian weather conditions, these units resemble a G22W only by their internal electrical and mechanical equipment.
Production spanned from 1967 to 1989.
EMD G22W Orders | ||||||
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Builder | Date of Construction | Country | Railway | Quantity | Road numbers | Notes |
Electro-Motive Division | July 1967 | South Korea | Korea National Railroad | 22 | 4201-4222 | |
Electro-Motive Division | May 1970 | Guinea | Chemin de Fer Boké | 3 | 001 – 003 | The first EMD locomotives for Chemin de Fer Boké |
Electro-Motive Division | January - March 1977 | Egypt | Egyptian National Railways | 32 | 3801 – 3832 | |
Electro-Motive Division & Đuro Đaković | February 1975, August 1975, January - November 1982 | Iran | Islamic Republic of Iran Railways | 40 | 40.138 – 40.158, 60.159 – 60.178 | 40.138 served first as demonstrator; 60.159 – 60.178 were constructed by Đuro Đaković |
Kalmar Verkstad AB | (Month Unknown) 1989 | Israel | Rakevet Israel | 1 | T40100 | |
Nydqvist & Holm AB & Kalmar Verkstad AB | January 1969 - June 1970, September 1970 - June 1971, August 1975 - October 1977, February - December 1980, January 1983 - March 1987 | Sweden | Statens Järnvägar | 124 | 259 – 283, 314 – 323, 329 – 416 | 259 - 283, 314 - 383 Built by NOHAB; 384 - 416 Built by Kalmar |
G22U
The G22U appeared alongside its wide gauge counterpart in 1969. To separate itself from its predecessor G12 as well as the G22W, the G22U was identified by a U suffix to indicate that this model was supplied with traction motors adjustable to any rail gauge Universally (Metre Gauge up to Irish Gauge).
The G22U model found success among several buyers and were also built in different countries to suit the customers needs. The Yugoslav locomotives were equipped with a steam generator located in the high short hood. Both the Yugoslav Railways and Taiwan Railroad Administration purchased their G22U’s with a unique A-1-A running gear configuration. This did not alter the models designation as the center axles were not powered nor were A-1-A trucks widely produced at the time.
This locomotive found itself to be very successful in the metre gauge lines of Brazil, as where most lines did not permit the use of six-axle locomotives around tight curves.
Production spanned from 1969 to 1974.
EMD G22U Orders | ||||||
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Builder | Date of Construction | Country | Railway | Quantity | Road numbers | Notes |
Material y Construcciones S.A. | January - October 1971, July 1972 - February 1973 | Brazil | Rede de Viação Paraná-Santa Catarina (RFFSA) | 100 | 1501 – 1576, 1607 - 1630 | Purchased during the Brazilian Miracle era |
Material y Construcciones S.A. | January - May 1972 | Brazil | Viação Férrea do Rio Grande do Sul (RFFSA) | 30 | 1577–1606 | Purchased during the Brazilian Miracle era |
Electro-Motive Division | September - November 1969 | Taiwan | Taiwan Railway Administration | 39 | R101 – R139 | G22A |
Material y Construcciones S.A. | June 1973 - January 1974 | Yugoslavia | Jugoslavenske Željeznice | 30 | 644.001 – 644.025 | The only Yugoslav locomotives built from MACOSA |
Clyde Engineering | 1967 | Australia | Western Australian Government Railways | 5 | AA1515-AA1519 | EMD G22CU |
Clyde Engineering | 1969 | Australia | Western Australian Government Railways | 6 | AB1531-AB1536 | EMD G22CU |
General Motors Canada, Clyde Engineering & Hutt Workshops | 1978-1981 | New Zealand | KiwiRail | 85 | DC4006-DC4951 | EMD G22AUR |
G22W-AC
The G22W-AC first appeared in 1980. To separate itself from the base model G22, the G22W-AC was identified by an AC suffix to indicate that this model is supplied with an alternator that provides Alternating Current to the traction motors suited for Wide gauged rails (Standard Gauge up to Irish Gauge). This now increased reliability and reduced electrical problems derived from Direct Current.
Production spanned from 1980 to 1991.
EMD G22W-AC Orders | ||||||
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Builder | Date of Construction | Country | Railway | Quantity | Road numbers | Notes |
General Motors Diesel Division | January - March 1980, July - August 1981, December 1981, March - April 1982, August - November 1982 | Egypt | Egyptian National Railways | 228 | 3833 – 3999, 33601 – 33661 | Mostly used for passenger service |
Astilleros Argentinos Río de La Plata S.A. | March 1991 | Iran | Ahwaz Steel | 3 | Unknown |
G22W-2
The G22W-2 first appeared in 1991. To separate itself from the base model G22, the G22W-2 is identified by a -2 suffix to indicate that this model is supplied with DC Current -2 electronics only for traction motors adjustable for Wide gauged rails (Standard Gauge up to Irish Gauge). This now improved availability, efficiency and ease of maintenance of the locomotive.
EMD G22W-2 Orders | ||||||
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Builder | Date of Construction | Country | Railway | Quantity | Road numbers | Notes |
Astilleros Argentinos Río de La Plata S.A. | November 1991 | Iran | Ahwaz Steel | 3 | Unknown | The last of the G22 Series |
Phasing
Only two general variations have been noticed during the G22 production, most notably on the constant production of the RFFSA G22Us.
- Phase 1: Larger frame sill, air reservoir slung under skirting.
- Phase 2: Smaller frame sill, air reservoir exposed, and two horizontal bars along intake grilles.
There have been various as-modifications on railroads as well, but are excluded due to various degrees of completion on the modification.
Models
The G22U/G22W model is represented in HO Scale by Frateschi trains of Brazil. Due to the accommodation of the motor, the model is not entirely accurate.
See also
External links
- Electro-Motive Division Export GM Models
- Astilleros Argentinos Rio de la Plata S.A. GM Export Models
- Material Y Construcciones S.A. GM Export Models
- Nydqvist Och Holm Aktiebolag GM Export Models
- Đuro Đaković GM Export Models
- General Motors Diesel Division Export Models
- Frateschi G22U HO Scale Model
- GM G22U Data Sheet
- pt:EMD G22U EMD G22U Article in Portuguese.
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