Ivolga (EG2Tv)
Manufacturer	TVZ
Built at	Tver, Russia
Constructed	2014–present
Entered service	2017
Number built	439 cars (41 trainsets)
Capacity	1638, incl. 222 seats (5-car, v. 0.0) 1916, incl. 328 seats (6-car, v. 1.0) 2267, incl. 396 seats (7-car, v. 2.0) 3671, incl. 668 seats (11-car, v. 1.0 and 2.0)
Specifications
Car body construction	Stainless steel
Train length	116.0 m (380 ft 7 in) (5-car) 138.8 m (455 ft 5 in) (6-car) 161.6 m (530 ft 2 in) (7-car) 252.8 m (829 ft 5 in) (11-car)
Car length	23,800 mm (78 ft 1 in) (end cars) 22,800 mm (74 ft 10 in) (intermediate cars)
Width	3,480 mm (11 ft 5 in)
Floor height	1,320 mm (52 in)
Doors	2 per side; 1,400 mm (55 in) width
Wheel diameter	957 mm (37.7 in)
Wheelbase	17,600 mm (690 in) (full) 15,000 mm (590 in) (between bogie centers)
Maximum speed	120–160 km/h (75–99 mph)
Weight	Ivolga 0.0: 55,500 kg (122,400 lb) (end cars) 49,300 kg (108,700 lb) (intermediate cars) 56,900 kg (125,400 lb) (intermediate motor cars) Ivolga 1.0: 55,930 kg (123,300 lb) (end cars) 50,580 kg (111,510 lb) (intermediate cars) 58,200 kg (128,300 lb) (intermediate motor cars) Ivolga 2.0: 57,100 kg (125,900 lb) (end cars) 51,100 kg (112,700 lb) (intermediate cars) 58,900 kg (129,900 lb) (intermediate motor cars)
Traction system	ABB IGBT–VVVF
Traction motors	4 × 300 kW (400 hp)
Power output	2,400 kW (3,200 hp) (2 motor cars) 3,600 kW (4,800 hp) (3 motor cars) 6,000 kW (8,000 hp) (5 motor cars)
Acceleration	0.96 m/s2 (3.1 ft/s2)
Electric system(s)	3 kV DC (nominal) from overhead catenary
Current collector(s)	Pantograph
Track gauge	1,520 mm (4 ft 11+27⁄32 in)

The Ivolga (named after "Иволга" bird, e.g. Eurasian golden oriole), designation EG2Tv and EGE2Tv, is an electric multiple unit passenger train produced and manufactured by Tver Carriage Works (TVZ) for urban and commuter service.

History

First 2 trains were in use on Moscow railways — Novoperedelkino express route in 2017 — 2018 before extension of the Moscow Metro  Solntsevskaya line.^[1] Since 2018, they are working on Usovo branch of Belorussky suburban railway line in preparation for launch of Moscow Central Diameters D1 Line.^[2]

The exterior and interior styling, however, was outsourced: TVZ ordered the design of the concept train to Integral Design and Development (Arina Design) (Barcelona, Spain). A natural scale mock-up was built by Integral Design and Development and presented in Russia in 2015.

Re-styling of Ivolga was also outsourced to Integral Design and Development (Arina Design) in 2017. First Ivolga 2.0 trainset was built in 2019.

Since November 2019, an upgraded Ivolga 1.0 trains have been serving Line D1 of Moscow Central Diameters.^[3]

In 2021, yet another iteration of the design was presented, EGE2Tv, named Ivolga 3.0, with increased to 160 km/h max speed and meant for traveling longer distances. Whilst still utilizing the 2.0 exterior, the interior was updated by the Russian 2050.lab studio. They are currently meant for the new under-construction stage D3 of Moscow's MCD system planned to open in 2022-2023. First trainset was completed in 2022.

Next, Ivolga 4.0, would be an urban variant with 3 doors per car. First trainset was built in 2023.^{[citation needed]}

Overall 41 trains of the type were produced so far, working on lines D1 and D2 of MCD Moscow's metro-rail (high-capacity urban-rail) system as well as on express route Moscow - Usovo.

Gallery

Exterior

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  Ivolga 0.0 (EG2Tv) with original head
• 
  Ivolga 0.0 (EG2Tv) after modernization
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  Ivolga 1.0 (EG2Tv)
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  Ivolga 2.0 (EG2Tv)
• 
  Ivolga 3.0 (EGE2Tv)
• 
  Ivolga 1.0, head car (model 62-4497)
• 
  Ivolga 2.0, head car (model 62-4497)
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  Ivolga 1.0, motor car (model 62-4498)
• 
  Ivolga 1.0, trailer car (model 62-4499)

Interior

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  Driver cabin
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  Designated areas for bikes/scooters and wheelchairs inside control car of Ivolga-1.0.
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  Passenger door zone inside Ivolga-1.0.
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  Passenger door zone inside Ivolga 2.0.
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  Passenger rows and seats inside intermediate car of Ivolga-0.0.
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  Passenger rows of seats inside intermediate car of Ivolga-1.0.
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  Passenger seats and gangway inside intermediate car of Ivolga-2.0.
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  Toilet inside a control car.