Indian Railways operates 12000 trains everyday and half of them are hauled by the diesel locomotives. There are currently two types of locomotives being used over Indian Railways, the four stroke American Locomotive Company locomotives (ALCO) and the two stroke General Motors Electro Motive Division locomotives. There are commonalities as well as differences in these two locomotive engine technologies (EMD).For the past 6 decades ALCO locomotives are serving the nation and past 2 decades EMD locomotives are pressed into service. Salient features of these two technologies are not compared and as such this paper is an effort to compare the two engine technologies. All the major issues pertaining to locomotive engines are being compared in detail to have a good information of the same for a fair comparison. The paper includes the data made available by these two loco manufacturers originally from USA as well as data from diesel locomotive works, where they are currently under production.
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The narrow gauge steam locomotives of the Darjeeling Himalayan Railways are the existing examples of the external combustion engines, which played a key role for transportation in the region before the advent of the automobiles. However, their condition today is grim. In this paper we present the various technical shortcomings and suggestions for improvement of the Class B narrow gauge steam locomotives.
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It is an INDUSTRIAL CASE STUDY and PROJECT REPORT on the topic of "PRODUCTION PLANNING OF UNDER FRAME FABRICATION OF DIESEL LOCOMOTIVE WORKS BY LINE BALANCING" at Dankuni. Production Planning is the planning of production and manufacturing modules in a company or industry. It utilizes the resource allocation of activities of employees, materials and production capacity, in order to serve different customers. Production Planning is concerned with two main aspects: (i) routing or planning work tasks (ii) layout or spatial relationship between the resources. Line Balancing: A production strategy that involves setting an intended rate of production for required materials to be fabricated within a particular time frame. In addition, effective line balancing requires assuring that every line segment's production quota can be met within the time frame using the available production capacity. The Aim of The Project is to increase the production of Diesel loco under frame being produced at Dankuni Diesel Loco Component works with their existing infrastructure without much injection of Capitals. At present this workshop produces 4 under frames per month in 2 shifts. The production of finished under frame in 2 shifts employing total workforce. This finished under frames are dispatched to DLW Varanasi for housing engine, bogie, body components and control panel units.
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Study of a diesel engine.
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; Diesel generating units (DG Sets) are widely used in various places, Diesel generators are used to produce electricity without connecting to a power grid. DG Sets are used for the emergency power supply as well as it is used where electrical power is not available. DG Set Installation requires to be carried out as per Standard Installation guidelines to ensure satisfactory operation of the DG set. Installation guideline provides the detailed guideline for theinstallation of DG sets.
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The key idea behind this work is to evolve a robust mechanism of Energy Conservation for all the kinetic energy wasted today as resistive heat during the dynamic braking of typical EMD Diesel Electric Locomotive (WDM4 or similar) hauling express trains with avge. Speeds 120 – 130Kph. During dynamic braking the kinetic energy of the moving train is transformed into regenerative electrical energy in the Traction motors, then in a super synchronous region will be fed back to traction inverters and is converted to DC, raising the DC link voltage. The current scheme will take an intelligent decision to switch on the DBR. This idea aims to store the otherwise wasted energy as electrical energy in fast and lightweight rechargeable capacitors (called Ultra capacitors). The idea behind this paper is also to present on a moderate scale, an estimation of the amount of energy usable from braking for such an average train. The efforts made herein distinguish the concept from others on records, by way of using ultracapacitors and management of space and power by distributing the energy storage to each coach undercarriage. The effort presents a modular architecture that can be used to extend the existing design of the locomotives and coaches. The proposed capacitor charging computer shall support functions to compute which bank needs the charging and when to divert the DB power from rheostat to the ultracapacitors. This paper also presents a wireless communication system for controlling the flow of energy. As per estimates on a conservative scale, each braking operation of a Diesel Electric loco hauled trainset generates about 90MJ of useful, and practically storable energy per mixed braking cycle and for all the fast trains. This recoverable energy can be another source of non-conventional energy, which would otherwise go wasted. The concept herein should be initiated on a test scale, and extended to all railway locomotive classes that waste energy during electrical braking.
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