Automatic greasing to reduce noise from trains | india | Hindustan Times
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Automatic greasing to reduce noise from trains

india Updated: May 06, 2011 01:35 IST
Sanjeev K Ahuja

Much to the relief for those living in colonies near Metro tracks, trains running on the upcoming rapid metro in Gurgaon will use a new lubrication system to reduce the screeching sound at sharp turns.

According to RMGL (Rapid Metrorail Gurgaon Limited), the Wheel Flange Lubrication (WFL) system installed in trains would get activated automatically at turns and start spraying grease on the wheels.

The rapid metro, which is expected to become operational by 2013, will meander through residential colonies such as DLF City as well as several corporate office areas.

“The average speed of our trains would remain around 45kmph and it would get reduced to about 35 kmph at turns. We have also decided to introduce the WFL system. Instead of greasing the tracks, WFL would have nozzles that would get automatically activated at turns and spray grease on the wheels,” said Sanjiv Rai, the managing director RMGL.

Besides, the company has also hired V Mohnan, former president of the Acoustic Society of India and retired scientist from the National Physical Laboratory, to help install acoustic insulators and curb noise level.

Acoustic sound observers are used near flyovers and expressways to reduce noise caused by heavy vehicles.

The Delhi Metro Rail Corporation (DMRC) has also hired Mohnan for setting up acoustic noise busters for its tracks in Delhi and the national capital region.

Residents of Essel Towers near MG Road Metro station of the DMRC have complained about frequent disturbance when trains apply brakes at a sharp curve near that area.

The RMGL claims that with the new lubrication system, the noise level can be restricted up to 45 decibel.