title: Ernakulam–Patna Express (via Chennai)
text: # Ernakulam–Patna Express (via Chennai)
  
  The 22643 / 44 Ernakulam Junction–Patna Junction Express is a Express train belonging to Indian Railways southern zone that runs between Ernakulam Junction and Patna Junction in India.
  
  It operates as train number 22643 from Ernakulam Junction to Patna Junction and as train number 22644 in the reverse direction, serving the states of Tamil Nadu, Kerala, Andhra Pradesh, Odisha, West Bengal, Jharkhand and Bihar.
  
  ## Coaches
  
  The 22643 / 44 Express has one AC 2-tier, two AC 3-tier, 14 sleeper class, three general unreserved and two SLR (seating with luggage rake) coaches and two high capacity parcel van coaches. It carries a pantry car.
  
  As is customary with most train services in India, coach composition may be amended at the discretion of Indian Railways depending on demand.
  
  ## Service
  
  The 22643 Ernakulam Junction –Patna Junction express covers the distance of 2,795 km (1,737 mi) in 51 hours 15 mins (56 km/h) and in 51 hours 50 mins as the 22644 Patna Junction–Ernakulam Junction (55 km/h).
  
  As the average speed of the train is slightly above 55 km/h (34 mph), as per railway rules, its fare includes a Superfast surcharge.
  
  ## Routing
  
  The 22643 / 44 runs from Ernakulam Junction via Palakkad Junction, Coimbatore Junction, Perambur (Chennai), Tiruvottiyur (Chennai),Vijayawada Junction, Visakhapatnam, Bhubaneswar, Asansol Junction, Kiul Junction to Patna Junction.
  
  ## Traction
  
  As the route is fully electrified, an Erode or Royapuram-based WAP-4 locomotive powers the train up to Visakhapatnam. Later, an Visakhapatnam Loco Shed-based WAP-4 locomotive takes the reversed direction and pulls the train up to Asansol Junction, later a Howrah Junction-based WAP-4 electric locomotive takes one reversal and pulls the train to its destination.
  
  