The Dippy and Diggy Fours

January 24, 2009 at 14:49 3 comments

Mr Shubhranshu, CMPE of UBL DLS makes a presentation on the EMD locos.

Most comprehensive ToT ever for India. Includes entire technology plus technology of the original equipment suppliers.

Training of IR personnel in GM-EMD factories in USA/Canada.

Do you know what the GT46MAC abbreviated for?

G: Single Cab
T: Turbo charged
M: Full width cab

M does not stand for Mixed as is popularly thought. And there is no GT46PAC!! PAC is only an Indian corruption of terminology!

EMD locos NEVER need a POH.
Maximum stall starting torque of 54tonnes.
Higher fuel and lube efficiencies.
Very low maintenance loco
Max dynamic braking effort of 27tonnes
On board testing of loads of parameters.
16 cyliner 2 stroke 4000hp 710G3B loco.

Diagrams of the loco interiors and engine layout shown.

Complete lowdown of the locos, details of all parts.

The loco computer has information about every function, malfunction and events taking place. Includes speed recorder, power generation record.

EM2000 software helps in running a self load test without the need of a loadbox.
Opposite Direction braking (‘discovered’ just 6 months back!)
Alerter vigilance control system.
Automatic sanding and AEB.
Locked wheel/ slipped pinion detection.

Computer based Electro-pneumatic Air Brake system.
A Radar Transceiver compares linear speed and wheel rotation speed to minimise slip or give controlled slip.

Comparison between WDM-2/WDG-3/WDG-4/WAG-7/WAG-9 locos based on performance.

Surpasses all emission standards.

IGBT better than GTO

Upgraded to 4500HP now.
Has resulted in use of only 4 locos vs 6 on the Shiradi Ghats.

EMD locos now at UBL, KJM, SGUJ, BGKT.
Planned at Sabarmati, GY, BNDM and R !!

Shubhranshu now takes questions.

As for Dual cab locos, there was some issue in communications between the two cabs.
It is under the process of development and next year 2 such prototype locos would be manufactured.


Entry filed under: Sessions.

Bisi-bele bhath! Railway Heritage: Pride of India

3 Comments Add your own

  • 1. Bharath  |  January 24, 2009 at 15:15

    Can Mr. Shubaranshu explain why the dual cab option was not pushed harder?

  • 2. Ranga  |  January 24, 2009 at 17:29

    I wonder what he meant by communication between the cabs

  • 3. Akshay Marathe  |  January 24, 2009 at 18:38

    Any more details about “Opposite Direction braking”?

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