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Di Nicola F.,University of Surrey | Sorniotti A.,University of Surrey | Holdstock T.,University of Surrey | Viotto F.,Oerlikon Graziano Drive Systems | Bertolotto S.,Oerlikon Graziano Drive Systems
SAE International Journal of Alternative Powertrains | Year: 2012

The research presented in this paper focuses on the effects of downsizing the electric motor drive of a fully electric vehicle through the adoption of a multiple-speed transmission system. The activity is based on the implementation of a simulation framework in Matlab / Simulink. The paper considers a rear wheel drive case study vehicle, with a baseline drivetrain configuration consisting of a single-speed transmission, which is compared with drivetrains adopting motors with identical peak power but higher base speeds and lower peak torques coupled with multiple-speed transmissions (double and three-speed), to analyze the benefits in terms of energy efficiency and performance. The gear ratios and gearshift maps for each multiple-speed case study are optimized through a procedure developed by the authors consisting of cost functions considering energy efficiency and performance evaluation. The cost functions are explained in the paper along with the models adopted for the research. Copyright © 2012 SAE International.


Sorniotti A.,University of Surrey | Pilone G.,University of Surrey | Viotto F.,Oerlikon Graziano Drive Systems | Bertolotto S.,Oerlikon Graziano Drive Systems | And 3 more authors.
SAE International Journal of Engines | Year: 2011

This article deals with a novel 2-speed transmission system specifically designed for electric axle applications. The design of this transmission permits seamless gearshifts and is characterized by a simple mechanical layout. The equations governing the overall system dynamics are presented in the paper. The principles of the control system for the seamless gearshifts achievable by the novel transmission prototype - currently under experimental testing at the University of Surrey and on a prototype vehicle - are analytically demonstrated and detailed through advanced simulation tools. The simulation results and sensitivity analyses for the main parameters affecting the overall system dynamics are presented and discussed. © 2011 SAE International.


This report studies Gear Box in Global market, especially in North America, Europe, China, Japan, Southeast Asia and India, focuses on top manufacturers in global market, with capacity, production, price, revenue and market share for each manufacturer, covering ABB Bonfiglioli Emerson Electric Rexnord SEW Eurodrive Siemens Brevini Power Transmission Cone Drive Operations Curtis Machine Company David Brown Engineering Horsburgh & Scott Oerlikon Graziano Drive Systems Market Segment by Regions, this report splits Global into several key Regions, with production, consumption, revenue, market share and growth rate of Gear Box in these regions, from 2011 to 2021 (forecast), like North America Europe China Japan Southeast Asia India Split by product type, with production, revenue, price, market share and growth rate of each type, can be divided into Standard Gearbox Precision Gearbox Split by application, this report focuses on consumption, market share and growth rate of Gear Box in each application, can be divided into Passenger Vehicle Commercial Vehicle For Detailed Reading Please visit WiseGuy Reports @ https://www.wiseguyreports.com/reports/982436-global-gear-box-market-research-report-2017 Some Major Points from Table of content: Global Gear Box Market Research Report 2017 1 Gear Box Market Overview 1.1 Product Overview and Scope of Gear Box 1.2 Gear Box Segment by Type 1.2.1 Global Production Market Share of Gear Box by Type in 2015 1.2.2 Standard Gearbox 1.2.3 Precision Gearbox 1.3 Gear Box Segment by Application 1.3.1 Gear Box Consumption Market Share by Application in 2015 1.3.2 Passenger Vehicle 1.3.3 Commercial Vehicle 1.3.4 Application 3 1.4 Gear Box Market by Region 1.4.1 North America Status and Prospect (2012-2022) 1.4.2 Europe Status and Prospect (2012-2022) 1.4.3 China Status and Prospect (2012-2022) 1.4.4 Japan Status and Prospect (2012-2022) 1.4.5 Southeast Asia Status and Prospect (2012-2022) 1.4.6 India Status and Prospect (2012-2022) 1.5 Global Market Size (Value) of Gear Box (2012-2022) 2 Global Gear Box Market Competition by Manufacturers 2.1 Global Gear Box Production and Share by Manufacturers (2015 and 2016) 2.2 Global Gear Box Revenue and Share by Manufacturers (2015 and 2016) 2.3 Global Gear Box Average Price by Manufacturers (2015 and 2016) 2.4 Manufacturers Gear Box Manufacturing Base Distribution, Sales Area and Product Type 2.5 Gear Box Market Competitive Situation and Trends 2.5.1 Gear Box Market Concentration Rate 2.5.2 Gear Box Market Share of Top 3 and Top 5 Manufacturers 2.5.3 Mergers & Acquisitions, Expansion Buy now @ https://www.wiseguyreports.com/checkout?currency=one_user-USD&report_id=982436 3 Global Gear Box Production, Revenue (Value) by Region (2012-2017) 3.1 Global Gear Box Production by Region (2012-2017) 3.2 Global Gear Box Production Market Share by Region (2012-2017) 3.3 Global Gear Box Revenue (Value) and Market Share by Region (2012-2017) 3.4 Global Gear Box Production, Revenue, Price and Gross Margin (2012-2017) 3.5 North America Gear Box Production, Revenue, Price and Gross Margin (2012-2017) 3.6 Europe Gear Box Production, Revenue, Price and Gross Margin (2012-2017) 3.7 China Gear Box Production, Revenue, Price and Gross Margin (2012-2017) 3.8 Japan Gear Box Production, Revenue, Price and Gross Margin (2012-2017) 3.9 Southeast Asia Gear Box Production, Revenue, Price and Gross Margin (2012-2017) 3.10 India Gear Box Production, Revenue, Price and Gross Margin (2012-2017) For more information or any query mail at sales@wiseguyreports.com About Us Wise Guy Reports is part of the Wise Guy Consultants Pvt. Ltd. and offers premium progressive statistical surveying, market research reports, analysis & forecast data for industries and governments around the globe. Wise Guy Reports understand how essential statistical surveying information is for your organization or association. Therefore, we have associated with the top publishers and research firms all specialized in specific domains, ensuring you will receive the most reliable and up to date research data available. For more information, please visit https://www.wiseguyreports.com/sample-request/982436-global-gear-box-market-research-report-2017

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