EMD G22 Series
RFFSA MACOSA G22U #4392-6L pulling a passenger train in the Ferrovia Curitiba–Paranaguá line.
Type and origin
Power typeDiesel-electric
BuilderVarious licencees from Electro-Motive Division (see models listed)
ModelG22
Build dateJanuary 1967 - November 1991
Total produced746
Specifications
Configuration:
​
 • AARB-B, A1A-A1A, C-C
 • UICBo'Bo', (A1A)(A1A), Co'Co'
Gauge4 ft 8+1⁄2 in (1,435 mm) standard gauge
3 ft 6 in (1,067 mm)
1,000 mm (3 ft 3+3⁄8 in) metre gauge
Driver dia.40 in (1,016 mm)
Wheelbase43 ft 6 in (13.26 m) between bolsters;
8 ft (2,438 mm) between axles in each truck
Length46 ft 6 in (14.17 m)) over the coupler pulling faces
Width9 ft 3 in (2.819 m) over the grabirons
Height12 ft 6+15⁄16 in (3.834 m)
Loco weight71 t (69.9 long tons; 78.3 short tons)
Fuel capacity1,700–2,000 US gal
(6,435–7,571 L; 1,416–1,665 imp gal)
Prime moverEMD 12-645E
Engine typeV12 diesel engine
AspirationRoots Blower
Cylinders12
Performance figures
Maximum speed62–93 mph
(100–150 km/h)
Power output1,500–1,650 hp
(1,119–1,230 kW)
Career
Nicknames"Pup” "الجرار الكندي:(The Canadian Locomotive)" (Egypt)
LocaleAustralia, Brazil, Egypt, Guinea, Iran, Israel, New Zealand, Sweden, Taiwan & Yugoslavia

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 country requirements, the G22 Series was equipped with a naturally aspirated EMD 645 Series engine as well as four axle Flexicoil Type-B trucks which carried a low per-axle weight. Based on customer input, the G22 Series was defined by various designations that suited 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 including EMD Dash 2 electronics, alternators instead of generators, A1A-A1A running gear and/or steam generators.

The G22 designation could be freely applied 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 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, where 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 differentiate 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 5 ft 6 in / 1,676 mm broad 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 car body design came with the order of Swedish G22Ws. Completely redesigned to meet the Scandinavian weather conditions, these units resembled a G22W only by their internal electrical and mechanical equipment. These were designated SJ T44.

Production lasted from 1967 to 1989.

EMD G22W Orders
Image Builder Date of Construction Country Railway Quantity Class 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 41 40 40.138 – 40.158, 40.159 – 40.178 40.138 served first as demonstrator; 40.159 – 40.178 were constructed by Đuro Đaković
Kalmar Verkstad AB (Month Unknown) 1989 Israel Rakevet Israel 1 T 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 123 SJ T44[1] 259 – 283, 314 – 323, 329 – 416 259 - 283, 314 - 323 Built by NOHAB; 329 - 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 G22Us with a unique A-1-A running gear configuration. This did not alter the models designation as the centre 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 most lines did not permit the use of six-axle locomotives around tight curves.

Production spanned from 1969 to 1974.

EMD G22U Orders
Image Builder Date of Construction Country Railway Quantity Class 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 R100 R101 – R139 G22A
Material y Construcciones S.A. June 1973 - January 1974 Yugoslavia Jugoslavenske Željeznice 25 Series 644 644.001 – 644.025 JZ series 644

The only Yugoslav locomotives built from MACOSA

Clyde Engineering 1967 Australia Western Australian Government Railways 5 AA Class AA1515-AA1519 EMD G22CU
Clyde Engineering 1969 Australia Western Australian Government Railways 6 AB Class AB1531-AB1536 EMD G22CU
General Motors Canada, Clyde Engineering & Hutt Workshops 1978-1981 New Zealand KiwiRail 85 DC Class DC4006-DC4951 EMD G22AUR

G22W-AC

The G22W-AC first appeared in 1980. Compared to the base model G22, the G22W-AC added an AC suffix to indicate the use of EMD AR6 alternator generating Alternating Current, improving reliability compared to the previous DC generator. Output from the alternator was then rectified back to Direct Current for the traction motors. The G22W-AC came equipped with 4x EMD D77 traction motors, which were designed for Wide gauged rails (Standard Gauge up to Irish Gauge).

Production spanned from 1980 to 1991.

EMD G22W-AC Orders
Image 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 on suburban lines, the 336xx series was renumbered to 36xx (3601-3661)
Astilleros Argentinos Río de La Plata S.A. March 1991 Iran Ahwaz Steel 3 Unknown

G22W-2

The G22W-2 first appeared in 1991. Compared to the base model G22, the G22W-2 was identified by a -2 suffix to indicate the use of Dash-2 modular electronics (which included the use of the AC alternator used on the G22W-AC). The traction motors were adjustable for Wide gauged rails (Standard Gauge up to Irish Gauge). The updated electronics improved availability, efficiency and ease of maintenance of the locomotive.

EMD G22W-2 Orders
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.

  1. ↑ "Тепловоз G22". railtrain.pro. Retrieved 2023-01-08.
Wikimedia Commons has media related to EMD G22 locomotives.

See also

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.