The Engineer

COMSA provides its rail expertise to expand the Ankara Metro

Feb 25th, 2014 | By | Category: Articles, Current Issue ID, February14, The Engineer

The history of the underground in Turkey began with the construction in 1875 of the so-called Tünel in Istanbul, being the second oldest underground railway in the world. In the city of Ankara, the history of the underground is newer and began with the construction of the Ankaray light rail, between 1992 and 1996. The […]



Contact wires – conductivity is of prime importance

Feb 25th, 2014 | By | Category: Articles, Current Issue ID, February14, The Engineer

Introduction The contact wire is a very important element of the electric overhead railway system. In order to be installed, this contact wire has to meet a complex system of conditions which impose strict requirements to the manufacturing process. For over a decade, FUX SA has been dealing with the manufacturing of overhead wires and […]



Railway infrastructure financing – an aspect with vast implications in railway transport system operation (part IV)

Feb 25th, 2014 | By | Category: Articles, Current Issue ID, February14, The Engineer

5. Strategy elements of railway infrastructure modernization 1.1 The effects of the increase of maximum speed and maximum admitted tonnage as a result of investments In the following, the considerations will be focused on investment strategies in railway infrastructure through modernization works. Regarding the aim of investments, the infrastructure manager has to choose between two […]



Railway infrastructure financing – an aspect with vast implications in railway transport system operation (part III)

Jan 28th, 2014 | By | Category: Articles, Current issue F&L, January14, The Engineer

3.The influence of railway infrastructure stress on its quality Considering the parameters presented in figure 18, we can note that: Ci3<Ci2<Ci1 ,  Cf3<Cf2<Cf1 and      Pr3=Pr2=Pr1. The decrease of both quality limits due to underfinancing has negative effects on the essential requirements and especially on railway safety – as a result of the deterioration of  […]



Railway infrastructure financing – an aspect with vast implications in railway transport system operation (part II)

Dec 19th, 2013 | By | Category: Articles, Current Issue MT, December13, The Engineer

3.The influence of railway infrastructure stress on its quality The type of the draft, connection and buffing gears has a significant influence on the dynamic and power behaviour of a train. Transversal forces are influenced by the rigidity or the mobility of the used coupling systems. The concepts presented above are relevant especially for the […]



railpowerbox – the energy solution for future railways

Nov 28th, 2013 | By | Category: Articles, Current Issue ID, November 13, The Engineer

The railpower box is the leading energy metering system for the railways of the future. It is a complete energy measurement solution for cross-border rail traffic that enables environmentally friendly Energy Management through clear and transparent calculation of locomotive electricity demand. Thus makes it the optimum base for energy and cost-saving measures. The specially developed […]



Sustrail: The Sustainable “Freight vehicle-Track” system

Nov 28th, 2013 | By | Category: Articles, Current Issue ID, November 13, The Engineer

A sustainable and efficient freight transport in Europe plays a vital role in having a successful and competitive economy. Freight transport is expected to grow by some 50 % (in tonne-kilometres) by 2020 when more freight and more passengers will have to travel by rail to meet Europe’s short, medium, and long-term traffic needs. In […]



Railway infrastructure financing – an aspect with vast implications in railway transport system operation (part I)

Nov 28th, 2013 | By | Category: Articles, Current Issue ID, November 13, The Engineer

1. Introduction Railway infrastructure particularities, together with the high level of technical compatibility with railway vehicles, ge-nerate direct influences upon the entire operational process of the railway system. In other words, a very specialized domain is the maintenance of the  structural subsystem infrastructure, command-control, signalling and energy. Due to its complexity and technical regulation level, […]



Railway signals with LED units

May 23rd, 2013 | By | Category: Articles, Current Issue ID, Mai 13, The Engineer

WHY Signals with LED EU Units ? Because ISAF is continuously preoccupied with creating and promoting new products on the market that, beside high performance, quality and safety level, should also bring added value for the customer, we have joined forces with Zelisko Austria for the adapting to the Romanian market and commercialising Signals with […]



DRRSss-y bogie for rapid freight trains in Germany

Jan 23rd, 2013 | By | Category: Articles, Current issue F&L, January 13, Recommended, The Engineer

Increasing freight transport speed has also imposed the technical adaptation of wagons so as to cope with speeds of up to 160 km/h. Therefore, for the Inter Cargo Express freight service, German railway operator DB has bought DRSS-bogie container wagons for maximum speeds of 160 km/h as early as 1991. Germany’s initiative in terms of […]