Series E4 offers high capacity at high speed

first_imgBYLINE: Yoshihiko SatoGeneral Manager, Transport and Rolling Stock Department,East Japan RailwayJR EAST has adopted a two-part strategy for replacing the 700 Series 200 cars that entered service with the opening of the Tohoku and Joetsu shinkansen in 1982. The fine detail is still under discussion, but Series E2 sets running at up to 275 km/h will accelerate journey times from Tokyo to Morioka and Niigata, and double-deck Series E4 units will increase capacity on profitable peak-hour commuter services to destinations within a 150 km radius of Tokyo. Work continues on the best way to operate E2 and E4 trainsets together.JR East’s first all double-deck shinkansen trainset, the Series E1 ’MAX’ (RG 5.94 p287), has enjoyed considerable success and boosted capacity on commuter services. Each E1 trainset has 12 cars, providing high capacity at peak periods but offering insufficient flexibility for economic operation at other times. To achieve this, the eight-car E4 will run in pairs during peak periods and singly at other times, and will be compatible with E2, E3 and Series 400 trainsets (Fig 1).Three E4 trainsets are currently under construction and are due to enter service at the end of this year. Each unit will have a total of 817 seats, with 54 in green car accommodation (first class) and 763 in second. We believe that commuter services operated with pairs of E4 trainsets will offer the greatest high-speed capacity anywhere in the world, with 1634 seats provided in a 16-car formation 400m long.Less weight, more powerWith car bodies fabricated from aluminium alloy rather than carbon steel, the E4 has a lower axleload than its E1 predecessor. With a 1 h rating of 6 720 kW, each E4 trainset has four powered and four trailer vehicles. In place of the 410 kW traction motors fitted to the E1, the E4 has 420 kW motors which will provide sufficient capacity for continued operation in the event of power car failure.To reduce weight further, VVVF traction equipment incorporating IGBT technology has replaced the GTO-based drive of the E1. As a result, a fully-laden E4 has a highest axleload of 16 tonnes, 1 tonne less than the E1. Bolsterless bogies with a wheelbase of 2500mm have been specified; wheel diameter is 910mm, as with the E1.Maximum speed is 240 km/h, with regenerative and air braking systems fitted as on the E1. The nose design of the E4 has been modified to reduce pressure waves generated when the train enters or leaves a tunnel.The driving trailer at the Tokyo end of each E4 trainset (Car 1) has 75 unreserved second class seats, arranged in a 3+3 configuration on the upper deck and as a 2+3 layout on the lower deck. Folding seats are provided in the vestibule of Car 1, which is equipped with toilets. Car 2 is a motor car with 133 unreserved second class seats, arranged in the same 3+3 and 2+3 configurations as Car 1.Transformer equipment is located in Car 3, a motor car with 119 second class seats for smokers arranged in 3+3 and 2+3 formats. Car 4 is a trailer equipped with a pantograph, with 124 reserved second class seats for smokers in a 2+3 configuration on both decks.Reserved seating in a 2+3 configuration for 110 second class passengers is provided in Car 5, a trailer vehicle with a kiosk, conductor’s office and toilets (including one for disabled passengers) at vestibule level. Car 6 is powered and equipped with a pantograph, offering 122 reserved second class seats and a compartment with disabled accommodation, at vestibule level adjacent to Car 5.The upper deck of Car 7, a power car with transformer equipment, has seats for 36 first class passengers, arranged in a 2+2 layout (Fig 2). On the lower deck there are 55 reserved second class seats in a 2+3 arrangement. Car 8, a driving trailer, has reserved smoking accommodation for 18 first class passengers on the upper deck and 25 standard class passengers on the lower deck. Disabled accommodation is provided on the upper deck, reached by a lift from the vestibule.Seating throughout the E4 is the same as that supplied for the E1, with electric motors fitted to turn the seats through 180° at the end of each journey. Each car on the E4 has a lift for transferring refreshment trolleys between decks, and public telephones have been fitted in Cars 2, 3, 5 and 8. oCAPTION: Nose design has concentrated on reducing the pressure waves generated when entering and leaving tunnels CAPTION: Fig 1. The E4 has been designed to operate with JR East’s E3 (top), Series 400 (middle) and E2 (bottom) trainsetsCAPTION: Fig 2. Two cars of Series E4 have first class accommodation on the upper deckSeries E4 car dimensionsTABLE: Width mm 3380Height mm 4493Length over (driving car) 25700 couplers mm (intermediate car) 25000Bogie wheelbase mm 2500last_img read more

Nigeria v Serbia: Battle of Eagles in London’s Hive

first_imgDuro IkhazuagbeAfter the inspiring start of Nigeria in the warm up series to the World Cup 2018 in Russia by claiming a 1-0 victory against Poland in Wroclaw last Friday, the Super Eagles will file out against Serbia this evening at The Hive, Canons Park in London for another trial game. The match is scheduled to begin at 8pm.Although the victory against Poland was heart warming to both the players and Nigerian ball fans, the match threw up some of the grey areas that need to really work on. Team Handler, Gernot Rohr, has said it loud and clear to all who care to listen: This team is still work in progress! The Franco-German gaffer is not deluding himself that with the defeat of the sixth ranked team in the world, his wards have arrived at the global stage. Instead, Rohr has thrown in more hours of work to correct the many flaws noticed in the clash with Poland.“We’ve seen a lot of good things and some things we must work on before the World Cup in Russia,” Rohr observed in his post match review of the game.“Friendly matches provide a great opportunity to see everything about your team.“It is not really the same as a World Cup game. Our preparation is still a work in progress to be ready. We know winning friendly matches could give us false hope but we want to keep working hard,” stressed the Eagles coach ahead of tonight’s clash with Serbia.From the rear, the lad between the sticks for Nigeria at Stadion Miejski, Francis Uzoho, have another chance tonight to prove he’s good enough to pick the Nigerian Number 1 jersey. He was all bundle of fright in his first few minutes on the pitch against Poland. Though he later gained confidence as the game progressed, he has not proved yet he has the capacity to organise his backline in the heat of action.Eagles right and left backs need more attention. Shehu Abdullahi and Bryann Idowu still need to up their games to gain the confidence of Nigerians. The ‘Oyinbo’ wall in the central defence appears impenetrable but in situation where Leon Balogun or Williams Troost Ekong is injured (as we have it today with a likely absence of Balogun due to a knock), Rohr needs to experiment more for a perfect stand in.The problem appears more in the midfield with the absence of skipper John Mikel Obi. Torino player, Joel Obi who is just warming himself back to the team is yet to hit that form that endeared him to ball fans mainly due to his absence from the team due to injuries. There were lapses not common with him against Poland. Mikel Agu, and injured Oghenekaro Etebo are in the wing. One player who stands out of the pack, in that middle, is Wilfred Ndidi. He didn’t disappoint even if he needs to be cautioned on the why ‘too much hardness’ can lead to early exit.Junior Ajayi, Gabriel Okechukwu and a host of some of the players who didn’t get the chance to exhibit their skills against Poland have the Serbian game a clear opportunity to stake for places in the Russia bound final list of 23 Eagles!Up front, Odion Ighalo, Kelechi Iheanacho as well as Alex Iwobi showed good foot-works even though the Leicester City forward appears lost for the greater part of the game.As for Victor Moses, the Serbs are there for his picking! Which rule says Eagles cannot have both Moses and Ahmed Musa on at same time? Moses can effectively operate from the left with Musa doing his thing from the right wing.Serbia on the other hand will be disappointed this evening if they fail to get a result like they did in the tense friendly they lost against Morocco last Friday.The Serbians who had only lost once in their previous ten games before the fall to Morocco, will need to see a vast improvement before June as they have one of the tougher groups, consisting of Costa Rica, Switzerland and most worryingly, Brazil.Serbia Head Coach Mladen Krstajic may look to experiment after his side fell to Morocco last week, with the option to include Cardiff City midfielder Marko Grujic a possibility to add more attacking capabilities into the midfield. Manchester United’s Nemanja Matic and Dusan Tadic, the Southampton forward remain the biggest names for Rohr and his wards to worry about. Adem Ljajic is also to watch out for due to his splitting passes with Luka Milivojević (Crystal Palace), and Aleksandar Mitrović (Fulham) are the other Britain-based stars in the Serbia squad for the match against Nigeria.(Today)Spain vs ArgentinaNigeria vs SerbiaEngland vs ItalyGermany vs BrazilRussia vs FranceDenmark vs ChileEgypt vs GreeceBelgium vs S’ArabiaShare this:FacebookRedditTwitterPrintPinterestEmailWhatsAppSkypeLinkedInTumblrPocketTelegramlast_img read more