SFC - Specific Fuel Consumption
Engine:
For the locomotive, the SFC of the engine can be calculated by measuring time to calculate the Horse Power output in terms of BHP.Hr for a specific amount of fuel consumption while the engine is put on load during load box test.
This is more accurate in order to calculate engine efficiency, because output of the engine is measured at the crankshaft, neglecting all other losses of the locomotive.
Train:
Goods | 2.50 Liters per 1000 GTKMs |
Passenger | 4 Liters per 1000 GTKMs |
Goods | 1.52 Liters per 1000 GTKMs |
Passenger | 2.81 Liters per 1000 GTKMs |
SEC - Specific Energy Consumption
The figures of SECs (Approx), accordingly are:
Factors that affect SFC
Engineless loaded
Weak Engine
Other factors P.Way, Signaling, Operating facilities
Vehicle Design
Driving techniques
Steps were taken to bring fuel efficiency
Arresting any leakages.
Application of Fuel Kit
High performance & high capacity turbo supercharger
Improved Air Cooler
Improved Piston and Piston ring
Use of Multigrade oil
Minimum inventory in RCDs - From 15 days to 5 days
Use of B-5 blended HSD - 5 % Bio Diesel
Fuel pattern - Cheaper RCDs are fuelling more to Diesel Locomotives to avoid fuelling at costlier RCDs
Withdrawn overaged WDMs Locomotives from mainline services
DPC - Driving Power Car of DEMU train - Conversion to dual-fuel i.e., Diesel + CNG
Auxiliary Power Unit - introduced in Diesel Locomotives - for automatic shutting down of Diesel Locomotives while standing idle.
CReDI - Common Rail electronic Direct Injection - Developed & Fitted in Diesel Locomotives
Developing alternative fuel systems like Traction, Solar Power to reduce the consumption of Diesel.
IROAF - Indian Railways Organization of Alternate Fuels, Chennai - Developing the alternative fuel.
The performance of Loco Pilots is being monitored regularly.
Monitoring of idling of Locomotives has been started through REMMLOT - Remote Monitoring and Management of Locomotive and Trains fitted in Locomotives.
All overaged Broad Guage Diesel Mixed Traffic Engines (WDM2) locomotives have been withdrawn from mainline service.
Retro-fitment of Microprocessor control system in diesel Locomotives have been executed to achieve fuel efficiency.
Miller cycle-based turbochargers and Variable Turbine Geometry (VTG) Turbochargers have been developed for ALCo locomotives to achieve fuel efficiency.
Solar Energy
Indian railways have planned for 1000 MW of solar power plants by 2020-21 with 500 MW at railway rooftops for non-traction use and 500 MW land-based for mostly in traction use.
The solar power from land-based plants shall be mostly used in train operations.
IROAF is implementing the provision of Solar Panels on the rooftop of coaches and Brake Vans of freight trains for taking up part of hotel load (electric lighting and fans load).
In Goods train, Solar Panels on a trial basis have been fitted on the rooftop of 50 Nos. Guard Brake Vans.
In passenger Trains, Solar panels on a trial basis have been fitted on the rooftop of 06 Nos. Trailer Coaches of Diesel Electric Multiple Units (DEMU).
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