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Native Over-Expanded Engine Based on a Planetary Crankshaft with Enhanced Balancing
Technical Paper
2019-01-1194
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Over-expansion is one of the promising strategies for improving Internal combustion engine (ICE) efficiency and emissions. It can be implemented by using an unconventional crankshaft. These mechanisms have mass production potential and acceptable friction losses, but also a complex kinematic and dynamic behaviour. This paper proposes such a crank design, a small planetary hypotrochoid over-expanded single cylinder engine - UMotor - and compares it to equivalent conventional ICEs with similar intake or expansion strokes. A suitable crankshaft counter weight geometry was determined in order to minimize the overall reaction forces. The mass balancing studies were conducted via a dynamic motion analysis of the crank drive, including a Fast Fourier Transform (FFT) frequency analysis. For the tested engine speeds, the UMotor average and peak magnitude reaction forces proved to be similar to those generated in the conventional engines for intermediate and high engine speeds. Also, the UMotor displayed fewer high frequency harmonics, indicating a lower structural disturbance of the chassis of a vehicle equipped with one of these engines.
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Capela, G., Costa, T., Meireles, J., Martins, J. et al., "Native Over-Expanded Engine Based on a Planetary Crankshaft with Enhanced Balancing," SAE Technical Paper 2019-01-1194, 2019, https://doi.org/10.4271/2019-01-1194.Data Sets - Support Documents
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References
- Hoeltgebaum , T. , Simoni , R. , and Martins , D. Reconfigurability of Engines: A Kinematic Approach to Variable Compression Ratio Engines Mechanism and Machine Theory 96 308 322 2016
- Martins , J. , Uzuneanu , K. , Ribeiro , B. , and Jasansky , O. Thermodynamic Analysis of an Over-Expanded Engine SAE Technical Paper 2004-01-0617 2004 10.4271/2004-01-0617
- Heywood , J. Internal Combustion Engine Fundamentals McGraw Hill 1988
- Martins , J. Motores de Combustão Interna Fourth Porto Publindustria 2013 978-989-723-033-2
- Kutlar O.A. , Arslan H. and Calik A.T. Methods to Improve Efficiency of Four Stroke, Spark Ignition Engines at Part Load Energy Conversion and Management 46 3202 3220 2005
- Martins , J. Thermodynamic Analysys of an Over-Expanded Engine SAE Technical Paper 2004-01-0617 2004 10.4271/2004-01-0617
- Ribau , J. , Silva , C. , Brito , F.P. , and Martins , J. Analysis of Four-Stroke, Wankel, and Microturbine Based Range Extenders for Electric Vehicles Energy Conversion and Management 58 120 133 2012
- Pinto , J. , Costa , T. , Martins , J. , and Brito , F. Hypo-Cycloidal Crank Mechanism to Produce an Over-Expanded Cycle Engine 2015
- Watanabe , S. , Koga , H. , and Kono , S. Research on Extended Expansion General-Purpose Engine - Theoretical Analysis of Multiple Linkage System and Improvement of Thermal Efficiency SAE Technical Paper 2006-32-0101 2006 10.4271/2006-32-0101
- Atkinson J. 1887
- Pertl , P. , Lang , M. , Schmidt , S. , and Kirchberger , R. Mass Balancing Measures of a Linkage-Based Extended Expansion Engine SAE Technical Paper 2016-32-0096 2016 10.4271/2016-32-0096
- Pertl , P. , Zojer , P. , Lang , M. , Schoegl , O. et al. Extended Expansion Engine with Mono-Shaft Cam Mechanism for Higher Efficiency - Layout Study and Numerical Investigation of a Twin Engine SAE Technical Paper 2014-32-0102 2014 10.4271/2014-32-0102
- Honda Motor Co., Ltd. Performing more work with less fuel - EXlink (Extended Expansion Linkage Engine) http://world.honda.com/powerproducts-technology/exlink/
- Honda Motor Co., Ltd. Honda Engines - GX35 http://engines.honda.com/models/model-detail/gx35
- Engine 139QMA Maintenance Manual http://www.49ccscoot.com/manuals/139QM_Engine_Manual.pdf
- Dassault Systèmes SolidWorks Corp. Understanding Motion Simulation https://www.solidworks.com/sw/images/content/Training/SIM_Motion_UnderstandingMotion_WP_ENG.pdf
- Smaili , A.A. and Khetawat , M.P. Dynamic Modeling of Automotive Engine Crankshafts Mechanism and Machine Theory 29 7 995 1006 1994
- Foale , T. Motorcycle Handling and Chassis Design - the Art and Science Spain Tony Foale Designs 2002
- Watanabe , S. , Naoe , G. , and Tokubi , K. Research on Inertia Force Characteristics and its Reduction in Extended Expansion Linkage Engine Honda R&D Technical Review 24 21 2012