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Optimization of Diesel Engine and After-treatment Systems for a Series Hybrid Forklift Application
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 14, 2020 by SAE International in United States
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This paper investigates an optimal design of a diesel engine and after-treatment systems for a series hybrid electric forklift application. A holistic modeling approach is developed in GT-Suite® to establish a model-based hardware definition for a diesel engine and an after-treatment system to accurately predict engine performance and emissions. The used engine model is validated with the experimental data. The engine design parameters including compression ratio, boost level, air-fuel ratio (AFR), injection timing, and injection pressure are optimized at a single operating point for the series hybrid electric vehicle, together with the performance of the after-treatment components. The engine and after-treatment models are then coupled with a series hybrid electric powertrain to evaluate the performance of the forklift in the standard VDI 2198 drive cycle. In addition, the thermal management strategies like retarding injection timing and late post-injection of fuel during cold start are analyzed in this work. The results show the reduction of tailpipe- NOx emission is possible by properly retarding the injection timing without a significant effect on unburned hydrocarbon emissions.
The designed series hybrid powertrain uses a heuristic-based controller to define different modes of operation. The performance of powertrain is then evaluated in the VDI 2198 cycle. The energy flows from the battery and the engine fuel consumption are optimized to overcome the rolling resistance and lifting hydraulic load in an energy-efficient way. The energy recuperation possibility in the forklift application is high as it consists of intermittent peak loads in the VDI cycle. The simulation results show that the designed series hybrid powertrain forklift can save fuel up to 20% compared to forklifts with conventional powertrain operating in the VDI 2198 cycle. In addition, the operational cost of the after-treatment system is reduced by 19.8%.
CitationMaharjan, R., Shahbakhti, M., Rezaei, R., Möllmann, R. et al., "Optimization of Diesel Engine and After-treatment Systems for a Series Hybrid Forklift Application," SAE Technical Paper 2020-01-0658, 2020, https://doi.org/10.4271/2020-01-0658.
Data Sets - Support Documents
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- TechSci Research https://www.techsciresearch.com/report/global-forklift-market/1652.html
- VDI 2198 2012
- Conte , M. , Genovese , A. , Ortenzi , F. , and Vellucci , F. Hybrid Battery-Supercapacitor Storage for an Electric Forklift: A Life-cycle Cost Assessment Journal of Applied Electrochemistry 44 4 523 532 2014 10.1007/s10800-014-0669-z
- Vadlamudi , S.D.V.R. , Kumtepeli , V. , Ozcira , S. , and Tripathi , A. Hybrid Energy Storage Power Allocation and Motor Control for Electric Forklifts 2016 Asian Conference on Energy, Power and Transportation Electrification IEEE 2016 1 5
- Keränen , T.M. , Karimäki , H. , Viitakangas , J. , Vallet , J. et al. Development of Integrated Fuel Cell Hybrid Power Source for Electric Forklift Journal of Power Sources 196 21 9058 9068 2011 10.1016/j.jpowsour.2011.01.025
- Hosseinzadeh , E. , Rokni , M. , Advani , S.G. , and Prasad , A.K. Performance Simulation and Analysis of a Fuel Cell/Battery Hybrid Forklift Truck International Journal of Hydrogen Energy 38 11 4241 4249 2013 10.1016/j.ijhydene.2013.01.168
- Zhang , Z. , Mortensen , H.H. , Jensen , J.V. , and Andersen , M.A. Fuel Cell and Battery Powered Forklifts Vehicle Power and Propulsion Conference (VPPC) IEEE 2013 1 5
- Ogawa , K. , Futahashi , K. , Teshima , T. , and Akahane , F. Development of the World’s First Engine/Battery Hybrid Forklift Truck Mitsubishi Heavy Industries Technical Review 47 1 46 2010
- Kim , S. , Choi , S. , Lee , J. , Hong , S. , and Yoon , J. A Study of Hybrid Propulsion System on Forklift Trucks World Electric Vehicle Symposium and Exhibition 2013 1 8
- Gamma Technology LLC https://www.gtisoft.com/gt-suite-applications/propulsion-systems/combustion-and-emissions/
- Sampara , C.S. , Bissett , E.J. , and Chmielewski , M. Global Kinetics for a Commercial Diesel Oxidation Catalyst with Two Exhaust Hydrocarbons Industrial & Engineering Chemistry Research 47 2 311 322 2008 10.1021/ie070813x
- Zhang , Z. , Yang , S.L. , and Johnson , J.H. Modeling and Numerical Simulation of Diesel Particulate Trap Performance during Loading and Regeneration SAE Int. J. Fuel Lubr. 111 4 471 483 2002 https://doi.org/10.4271/2002-01-1019
- Metkar , P.S. , Harold , M.P. , and Balakotaiah , V. Experimental and Kinetic Modeling Study of NH 3 -SCR Of NO x on Fe-ZSM-5, Cu-Chabazite and Combined Fe-And Cu-Zeolite Monolithic Catalyst Chemical Engineering Science 87 51 66 2013 10.1016/j.ces.2012.09.008
- https://qpsearch.bt- forklifts.com/PDFSearch/GetPDF.asp?artno=745567-040
- Ehsani , M. , Gao , Y. , Longo , S. , and Ebrahimi , K. Modern Electric, Hybrid Electric, and Fuel Cell Vehicles Third CRC Press 2018 13: 978-1-4987-6177-2
- Investopedia https://www.investopedia.com/terms/c/coefficient-of-determination.asp 2019
- Jackson , T. https://www.aggman.com/diesel-exhaust-fluid-tier-4-final-equipment/ 2019
- Dallmann , T. , Posada , F. , and Bandivadekar Costs of Emission Reduction Technologies for Diesel Engines Used in Non-Road Vehicles and Equipment The International Council on Clean Transportation 2018