Tilting Trains

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  • Topic: Rail transport, High-speed rail, Tilting train
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  • Published : March 24, 2013
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Vishveshwaraya Technological University, Belgaum

TILTING TRAINS

DEPARTMENT OF MECHANICAL ENGINEERING

[pic]

GUIDE : VINAY B U
PRESENTED BY : ARUN
USN : 4SF09ME014

SYNOPSIS

With the invention of new technologies in various features of the railway transportation the human beings are more benefited.

One of the technology that the railway engineers thinking is about the “THE TILTING TRAINS”, which provide the passengers and the goods to reach the destination with a minimum time.

The technology involved in TILTING TRAIN is that when ever the trains pass over the curves and turnings of the railway tracks the compartments of the train is tilted to a certain angle by which the trains can travel with no reduction in speed.

By adopting this technology of TILTING TRAINS the fuel consumed by the trains can be saved ,the passengers can feel comfort and also time can be saved.

CONTENTS

1. Introduction

2. Problem with corners

3. What is tilting train?

4. Why tilting helps?

5. How do trains tilt?

6. Problems associated in tilting the track

7. Passenger comfort ness

8. Countries who developed the tilting technology

9. Advantages and Disadvantages of tilting trains

10. Summary

11. Bibliography

INTRODUCTION

Train is a mass transporter, which transports humans and goods from one place to another place. We have trains, which run by diesel and electricity. Among goods and passenger trains the most concerned one is passenger trains.

The passenger train should move quickly with high speeds. The rail road will not be always straight it should pass through curves and turns. We all know that if you are driving in your car and you take a turning at speed you feel centrifugal forces. Well it is no different from trains, if a train takes a turning at speeds centrifugal forces will be experienced.

The major problem for any trains is to pass over the curves and turns of the railroads. If the train moves with the same speed at the curves and turns the train may slip from the track, so the speed of the train will be slowdown drastically to avoid slip.

This results in wastage of fuel and in turn reduces the speed of the train, which is main consideration for the passenger trains. One of the solution found to avoid this situation is the tilting trains.

PROBLEMS WITH CORNERS

We all know that if your driving in your car and you take a corner at speed you feel centrifugal forces. Well it is no different from trains; if a train takes a corner at speed then centrifugal forces come in. Often train operating companies face a decision for building a high speed railway transport system... they can either invest money in the train to make it tilt but use existing railway lines, or they invest money in a new railway but don't need to spend money on expensive tilting mechanisms. This is why TGV, and ICE and bullet trains do not tilt, because they have their own dedicated high speed railway lines where curves are built with very high radii.

It is worth pointing out that the centrifugal force is a function of v2/r where v is the velocity and r is the radius. This means if you double the velocity, you quadruple the centrifugal force. Similarly, if you want to triple the velocity but keep the centrifugal force the same, you must increase the radius by a factor of nine! Something not always possible. This is why even apparently gentle curves can be much more of a problem with high speeds than one might thing, because the force rises with the square of velocity.

WHAT IS TILTING TRAIN ?

Tilting train consists of a tilting mechanism that enables increased speed on regular tracks....
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