Opposed-Piston Crankshaft System Dynamics Simulation and Durability Analysis in a Neotype Two-Stroke Diesel Engine

Chang Ming He; Si Chuan Xu

doi:doi:10.11648/j.ajmie.20170202.11

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Opposed-Piston Crankshaft System Dynamics Simulation and Durability Analysis in a Neotype Two-Stroke Diesel Engine

Chang Ming He, Si Chuan Xu

Published in American Journal of Mechanical and Industrial Engineering (Volume 2, Issue 2)

Received: 27 October 2016 Accepted: 8 December 2016 Published: 16 January 2017

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Abstract

For the opposed-piston and opposed-cylinder (OPOC) diesel engine with higher power density, recently it has drawn even more attentions than ever in several developed countries, such USA and Germany, et al, which is regarded as a technical innovation to further reduce emission, and decrease fuel consumption, attributed to outstanding thermal efficiency and engine package downsizing. To explore the interrelation of this special crank system in concept design stage, the multi-body dynamics and durability of the piston-opposed crankshaft system was investigated. Firstly the optimized function model of the unique crankshaft system in an OP2S (Opposed-piston two stroke) engine was established. Then it was to figure out the influence of all structural design parameters on OPE crankshaft averaged output torque, respectively. The calculated results show that the initial crank angle difference between inner crank web and outer crank web was the most critical contributor to elevate the averaged torque output than other structural parameters. The parametric 3D model of crankshaft system was refreshed automatically based on the optimized variables. Finally an OPE crankshaft prototype was manufactured and bend fatigue experiment was carried out in a relevant laboratory to obtain the material S-N Curve. The HCF (High Cycle Fatigue) result was indicated that the minimum safety factor on crank journal fillets can reach relevant estimation criterion without crankshaft failure occurring for an engine speed sweep.

Published in	American Journal of Mechanical and Industrial Engineering (Volume 2, Issue 2)
DOI	10.11648/j.ajmie.20170202.11
Page(s)	54-63
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Opposed Piston Engine, Averaged Torque Output, Durability, High Cycle Fatigue

References

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[2]	Foster, D., Herold, R., Lemke, J., and Regner, G., et al., Thermodynamic Benefits of Opposed-piston Two-stroke Engines, SAE International Technical Paper, 2011-01-2216.
[3]	Flint, M. and Pirault, J., “Opposed Piston Engines: Evolution, Use, and Future Applications,” (Warrendale, SAE International, 2009), doi:10.4271/R-378.
[4]	Hofbauer, P., “Opposed Piston Opposed Cylinder (OPOC) Engine for Military Ground Vehicles,” SAE Technical Paper 2005-01-1548, 2005, doi:10.4271/2005-01-1548.
[5]	Hofbauer, P., Stroke of Genius OPOC Takes Two. Engine Technology International, June, 1999.
[6]	Xu, H. J., Song J. O, Yao C. D. and Liu C. Z., et al., Simulation on In-cylinder Flow on Mixture Formation and Combustion in OPOC engine. NeiRanJi XueBao, 27, 5, 395-400.
[7]	Lee, P., and Wahl, M. (2012). Cylinder cooling for improved durability on an opposed-piston engine. SAE International Technical Paper, 2012-01-1215.
[8]	Franke, M., Huang, H., Liu, J., Geistert, A. et al., “Opposed Piston Opposed Cylinder (opoc™) 450 hp Engine: Performance Development by CAE Simulations and Testing,” SAE Technical Paper 2006-01-0277, 2006, doi:10.4271/2006-01-0277.
[9]	Ping, H. Analysis of Self-Balance Characteristics of OPOC Engine. Advanced Materials Research, 211-212, 93-96.
[10]	Wang, Z. H., The Analysis and Comparison of Subaru and Porsche Opposed-cylinder Engine [EB/OL]. http://info.52che.com/taizhou/ news 287 653.html, August, 26, 2011.
[11]	Foudray, H. and Ghandhi, J., “Scavenging Measurements in a Direct-Injection Two-Stroke Engine,” SAE Technical Paper 2003-32-0081, 2003, doi:10.4271/2003-32-0081.
[12]	Wojdyla, B. (2010). Ecomotors Opposed Piston Opposed cylinder (OPOC). Popular Mechanics [EB/OL].http://www.popularmechanics.com/cars/news/fuel-economy/6-prototype-engines-to-get-your-brain-firing #fbIndex1.
[13]	Walker, J. R. Exploring Power Technology. South Holland: The Goodheart-Willcox Co., Inc.
[14]	He Changming, Xu Sichuan, Zuo Chaofeng, etc. Multi-valve Intake Port Parametric Design and Performance Optimization of the Horizontal Diesel Engine, Mechanika, Vol.17 (6): 643-648.
[15]	Kalkstein, J., Röver, W., Campbell, B., Zhong, L. et al., “Opposed Piston Opposed Cylinder (opoc™) 5/10 kW Heavy Fuel Engine for UAVs and APUs,” SAE Technical Paper 2006-01-0278, 2006, doi:10.4271/2006-01-0278.
[16]	Fabien Redon, Christopher Kalebjian, John Kessler and Nicholas Rakovec, et al., “Meeting Stringent 2025 Emission and Fuel Efficiency Regulations with an Opposed-Piston, Light-Duty Diesel Engine,” SAE Technical Paper 2014-01-1187, 2014, doi:10.4271/2014-01-1187.
[17]	Micheal Wittler, Opposed Piston Opposed Cylinder Engine (OPOC) – Advanced Technology Development at FEV, China Internal Combustion Engine Industry Association, Aachen, February 28th, 2011.
[18]	Willcox, M., Cleeves, J., Jackson, S., Hawkes, M. et al., “Indicated Cycle Efficiency Improvements of a 4-Stroke, High Compression Ratio, S. I., Opposed-Piston, Sleeve-Valve Engine Using Highly Delayed Spark Timing for Knock Mitigation,” SAE Technical Paper 2012-01-0378, 2012, doi:10.4271/2012-01-0378.
[19]	Changming, H. and Sichuan, X., “The Investigation of Self-Balanced Property and Vibration on the Particular Crankshaft System for an Opposed Piston Engine,” SAE Technical Paper 2016-01-1768, 2016, doi:10.4271/2016-01-1768.

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APA Style

Chang Ming He, Si Chuan Xu. (2017). Opposed-Piston Crankshaft System Dynamics Simulation and Durability Analysis in a Neotype Two-Stroke Diesel Engine. American Journal of Mechanical and Industrial Engineering, 2(2), 54-63. https://doi.org/10.11648/j.ajmie.20170202.11

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ACS Style

Chang Ming He; Si Chuan Xu. Opposed-Piston Crankshaft System Dynamics Simulation and Durability Analysis in a Neotype Two-Stroke Diesel Engine. Am. J. Mech. Ind. Eng. 2017, 2(2), 54-63. doi: 10.11648/j.ajmie.20170202.11

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AMA Style

Chang Ming He, Si Chuan Xu. Opposed-Piston Crankshaft System Dynamics Simulation and Durability Analysis in a Neotype Two-Stroke Diesel Engine. Am J Mech Ind Eng. 2017;2(2):54-63. doi: 10.11648/j.ajmie.20170202.11

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@article{10.11648/j.ajmie.20170202.11,
  author = {Chang Ming He and Si Chuan Xu},
  title = {Opposed-Piston Crankshaft System Dynamics Simulation and Durability Analysis in a Neotype Two-Stroke Diesel Engine},
  journal = {American Journal of Mechanical and Industrial Engineering},
  volume = {2},
  number = {2},
  pages = {54-63},
  doi = {10.11648/j.ajmie.20170202.11},
  url = {https://doi.org/10.11648/j.ajmie.20170202.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajmie.20170202.11},
  abstract = {For the opposed-piston and opposed-cylinder (OPOC) diesel engine with higher power density, recently it has drawn even more attentions than ever in several developed countries, such USA and Germany, et al, which is regarded as a technical innovation to further reduce emission, and decrease fuel consumption, attributed to outstanding thermal efficiency and engine package downsizing. To explore the interrelation of this special crank system in concept design stage, the multi-body dynamics and durability of the piston-opposed crankshaft system was investigated. Firstly the optimized function model of the unique crankshaft system in an OP2S (Opposed-piston two stroke) engine was established. Then it was to figure out the influence of all structural design parameters on OPE crankshaft averaged output torque, respectively. The calculated results show that the initial crank angle difference between inner crank web and outer crank web was the most critical contributor to elevate the averaged torque output than other structural parameters. The parametric 3D model of crankshaft system was refreshed automatically based on the optimized variables. Finally an OPE crankshaft prototype was manufactured and bend fatigue experiment was carried out in a relevant laboratory to obtain the material S-N Curve. The HCF (High Cycle Fatigue) result was indicated that the minimum safety factor on crank journal fillets can reach relevant estimation criterion without crankshaft failure occurring for an engine speed sweep.},
 year = {2017}
}

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TY  - JOUR
T1  - Opposed-Piston Crankshaft System Dynamics Simulation and Durability Analysis in a Neotype Two-Stroke Diesel Engine
AU  - Chang Ming He
AU  - Si Chuan Xu
Y1  - 2017/01/16
PY  - 2017
N1  - https://doi.org/10.11648/j.ajmie.20170202.11
DO  - 10.11648/j.ajmie.20170202.11
T2  - American Journal of Mechanical and Industrial Engineering
JF  - American Journal of Mechanical and Industrial Engineering
JO  - American Journal of Mechanical and Industrial Engineering
SP  - 54
EP  - 63
PB  - Science Publishing Group
SN  - 2575-6060
UR  - https://doi.org/10.11648/j.ajmie.20170202.11
AB  - For the opposed-piston and opposed-cylinder (OPOC) diesel engine with higher power density, recently it has drawn even more attentions than ever in several developed countries, such USA and Germany, et al, which is regarded as a technical innovation to further reduce emission, and decrease fuel consumption, attributed to outstanding thermal efficiency and engine package downsizing. To explore the interrelation of this special crank system in concept design stage, the multi-body dynamics and durability of the piston-opposed crankshaft system was investigated. Firstly the optimized function model of the unique crankshaft system in an OP2S (Opposed-piston two stroke) engine was established. Then it was to figure out the influence of all structural design parameters on OPE crankshaft averaged output torque, respectively. The calculated results show that the initial crank angle difference between inner crank web and outer crank web was the most critical contributor to elevate the averaged torque output than other structural parameters. The parametric 3D model of crankshaft system was refreshed automatically based on the optimized variables. Finally an OPE crankshaft prototype was manufactured and bend fatigue experiment was carried out in a relevant laboratory to obtain the material S-N Curve. The HCF (High Cycle Fatigue) result was indicated that the minimum safety factor on crank journal fillets can reach relevant estimation criterion without crankshaft failure occurring for an engine speed sweep.
VL  - 2
IS  - 2
ER  -

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Author Information

Chang Ming He

School of Automotive Studies, Tongji University, Shanghai, China
Si Chuan Xu

School of Automotive Studies, Tongji University, Shanghai, China

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Plain Text BibTeX RIS

APA Style

Chang Ming He, Si Chuan Xu. (2017). Opposed-Piston Crankshaft System Dynamics Simulation and Durability Analysis in a Neotype Two-Stroke Diesel Engine. American Journal of Mechanical and Industrial Engineering, 2(2), 54-63. https://doi.org/10.11648/j.ajmie.20170202.11

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ACS Style

Chang Ming He; Si Chuan Xu. Opposed-Piston Crankshaft System Dynamics Simulation and Durability Analysis in a Neotype Two-Stroke Diesel Engine. Am. J. Mech. Ind. Eng. 2017, 2(2), 54-63. doi: 10.11648/j.ajmie.20170202.11

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AMA Style

Chang Ming He, Si Chuan Xu. Opposed-Piston Crankshaft System Dynamics Simulation and Durability Analysis in a Neotype Two-Stroke Diesel Engine. Am J Mech Ind Eng. 2017;2(2):54-63. doi: 10.11648/j.ajmie.20170202.11

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@article{10.11648/j.ajmie.20170202.11,
  author = {Chang Ming He and Si Chuan Xu},
  title = {Opposed-Piston Crankshaft System Dynamics Simulation and Durability Analysis in a Neotype Two-Stroke Diesel Engine},
  journal = {American Journal of Mechanical and Industrial Engineering},
  volume = {2},
  number = {2},
  pages = {54-63},
  doi = {10.11648/j.ajmie.20170202.11},
  url = {https://doi.org/10.11648/j.ajmie.20170202.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajmie.20170202.11},
  abstract = {For the opposed-piston and opposed-cylinder (OPOC) diesel engine with higher power density, recently it has drawn even more attentions than ever in several developed countries, such USA and Germany, et al, which is regarded as a technical innovation to further reduce emission, and decrease fuel consumption, attributed to outstanding thermal efficiency and engine package downsizing. To explore the interrelation of this special crank system in concept design stage, the multi-body dynamics and durability of the piston-opposed crankshaft system was investigated. Firstly the optimized function model of the unique crankshaft system in an OP2S (Opposed-piston two stroke) engine was established. Then it was to figure out the influence of all structural design parameters on OPE crankshaft averaged output torque, respectively. The calculated results show that the initial crank angle difference between inner crank web and outer crank web was the most critical contributor to elevate the averaged torque output than other structural parameters. The parametric 3D model of crankshaft system was refreshed automatically based on the optimized variables. Finally an OPE crankshaft prototype was manufactured and bend fatigue experiment was carried out in a relevant laboratory to obtain the material S-N Curve. The HCF (High Cycle Fatigue) result was indicated that the minimum safety factor on crank journal fillets can reach relevant estimation criterion without crankshaft failure occurring for an engine speed sweep.},
 year = {2017}
}

Copy | Download

TY  - JOUR
T1  - Opposed-Piston Crankshaft System Dynamics Simulation and Durability Analysis in a Neotype Two-Stroke Diesel Engine
AU  - Chang Ming He
AU  - Si Chuan Xu
Y1  - 2017/01/16
PY  - 2017
N1  - https://doi.org/10.11648/j.ajmie.20170202.11
DO  - 10.11648/j.ajmie.20170202.11
T2  - American Journal of Mechanical and Industrial Engineering
JF  - American Journal of Mechanical and Industrial Engineering
JO  - American Journal of Mechanical and Industrial Engineering
SP  - 54
EP  - 63
PB  - Science Publishing Group
SN  - 2575-6060
UR  - https://doi.org/10.11648/j.ajmie.20170202.11
AB  - For the opposed-piston and opposed-cylinder (OPOC) diesel engine with higher power density, recently it has drawn even more attentions than ever in several developed countries, such USA and Germany, et al, which is regarded as a technical innovation to further reduce emission, and decrease fuel consumption, attributed to outstanding thermal efficiency and engine package downsizing. To explore the interrelation of this special crank system in concept design stage, the multi-body dynamics and durability of the piston-opposed crankshaft system was investigated. Firstly the optimized function model of the unique crankshaft system in an OP2S (Opposed-piston two stroke) engine was established. Then it was to figure out the influence of all structural design parameters on OPE crankshaft averaged output torque, respectively. The calculated results show that the initial crank angle difference between inner crank web and outer crank web was the most critical contributor to elevate the averaged torque output than other structural parameters. The parametric 3D model of crankshaft system was refreshed automatically based on the optimized variables. Finally an OPE crankshaft prototype was manufactured and bend fatigue experiment was carried out in a relevant laboratory to obtain the material S-N Curve. The HCF (High Cycle Fatigue) result was indicated that the minimum safety factor on crank journal fillets can reach relevant estimation criterion without crankshaft failure occurring for an engine speed sweep.
VL  - 2
IS  - 2
ER  -

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