Research Papers: Internal Combustion Engines

Optimization Method and Simulation Study of a Diesel Engine Using Full Variable Valve Motions

[+] Author and Article Information
Yong Lu

College of Power and Energy Engineering,
Harbin Engineering University,
Harbin 150001, Heilongjiang, China
e-mail: luyong0806@126.com

Daniel B. Olsen

Department of Mechanical Engineering,
Colorado State University,
Fort Collins, CO 80523
e-mail: Daniel.Olsen@ColoState.EDU

Contributed by the IC Engine Division of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received November 13, 2016; final manuscript received December 16, 2016; published online March 7, 2017. Editor: David Wisler.

J. Eng. Gas Turbines Power 139(7), 072804 (Mar 07, 2017) (8 pages) Paper No: GTP-16-1532; doi: 10.1115/1.4035736 History: Received November 13, 2016; Revised December 16, 2016

Variable valve timing technologies for internal combustion engines are used to improve power, torque, and increase fuel efficiency. Details of a new solution are presented in this paper for optimizing valve motions of a full variable valve actuation (FVVA) system. The optimization is conducted at different speeds by varying full variable valve motion (variable exhaust open angle, intake close angle, velocity of opening and closing, overlap, dwell duration, and lift) parameters simultaneously; the final optimized valve motions of CY4102 diesel engine are given. The CY4102 diesel engine with standard cam drives is used in large quantities in Asia. An optimized electrohydraulic actuation motion used for the FVVA system is presented. The electrohydraulic actuation and optimized valve motions were applied to the CY4102 diesel engine and modeled using gt-power engine simulation software. Advantages in terms of volumetric efficiency, maximum power, brake efficiency, and fuel consumption are compared with baseline results. Simulation results show that brake power is improved between 12.8% and 19.5% and torque is improved by 10%. Brake thermal efficiency and volumetric efficiency also show improvement. Modeling and simulation results show significant advantages of the full variable valve motion over standard cam drives.

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Leroy, T. , Chauvin, J. , and Nicolas, P. , 2009, “ Motion Planning for Experimental Air Path Control of a Variable-Valve-Timing Spark Ignition Engine,” Control Eng. Pract., 17(12), pp. 1432–1439. [CrossRef]
Lancefield, T. , Methley, L. , Räse, U. , and Kuhn, T. , 2000, “ The Application of Variable Event Valve Timing to a Modern Diesel Engine,” SAE Technical Paper No. 2000-01-1229.
Allen, J. , and Dopson, C. , 1991, “ The Development and Application of Two Camshaft Profile Switching Systems,” Institution of Mechanical Engineers, Seminar Variable Geometry Engines, London, June, Paper No. 00102.
Buuck, B. , and Hampton, K. , 1997, “ Engine Trends and Valvetrain Systems for Improved Performance, Fuel Economy and Emissions,” International Symposium on Valve Train System Design and Materials, Detroit, MI, Apr. 14–15, p. 3.
Abagnale, C. , Migliaccio, M. , and Pennacchia, O. , 2013, “ Mechanical Variable Valve Actuation Systems for Motorcycle Engines,” World Congress on Engineering, London, July 3–5, Vol. 3, pp. 1809–1814.
Abagnale, C. , Migliaccio, M. , and Pennacchia, O. , 2012, “ Design of a New Mechanical Variable Valve Actuation System for Motorcycle Engines,” ASME Paper No. ESDA2012-82317.
Fontana, G. , and Galloni, E. , 2009, “ Variable Valve Timing for Fuel Economy Improvement in a Small Spark-Ignition Engine,” Appl. Energy, 86(1), pp. 96–105. [CrossRef]
Kocher, L. , Koeberlein, E. , Van Alstine, D. G. , Stricker, K. , and Shaver, G. , 2012, “ Physically Based Volumetric Efficiency Model for Diesel Engines Utilizing Variable Intake Valve Actuation,” Int. J. Engine Res., 13(2), pp. 169–184. [CrossRef]
Tomoda, T. , Ogawa, T. , Ohki, H. , Kogo, T. , Nakatani, K. , and Hashimoto, E. , 2010, “ Improvement of Diesel Engine Performance by Variable Valve Train System,” Int. J. Engine Res., 11(5), pp. 331–344. [CrossRef]
Milovanovic, N. , Chen, R. , and Turner, J. , 2004, “ Influence of Variable Valve Timings on the Gas Exchange Process in a Controlled Auto-Ignition Engine,” Proc. Inst. Mech. Eng. Part D, 218(5), pp. 567–583. [CrossRef]
Elkady, M. , Elmarakbi, A. , Knapton, D. , Saleh, M. , Abdelhameed, M. , and Bawady, A. , 2013, “ Theoretical and Experimental Analysis of Electromagnetic Variable Valve Timing Control Systems for Improvement of Spark Ignition Engine Performance,” Adv. Automob. Eng., 3(1), p. 105.
Mihalcea, S. , Stanescu, N. D. , and Popa, D. , 2015, “ Synthesis and Kinematic and Dynamic Analysis of a Variable Valve Lift Mechanism With General Contact Curve,” Proc. Inst. Mech. Eng., 229(1), pp. 65–83.
Stricker, K. , Kocher, L. , Koeberlein, E. , Van Alstine, D. , and Shaver, G. M. , 2012, “ Effective Compression Ratio Estimation in Engines With Flexible Intake Valve Actuation,” American Control Conference, Montreal, QC, Canada, June 27–29, pp. 1248–1289.
Xingyong, S. , Pradeep, G. , and Zongxuan, S. , 2013 “ A New Stabilizer for LTV Internal Model Based System and Its Application to Camless Engine Valve Actuation,” American Control Conference, Washington, DC, June 17–19, pp. 5276–5281.
Oyama, H. , and Yamakita, M. , 2015, “ Speed Control of Vehicles With Variable Valve Lift Engine by NMPC Based on Application of SDAGM With Continuation Method,” IEEE Conference on Control and Applications, Sydney, Australia, Sept. 21–23, pp. 1026–1031.
Adam, H. , Pradeep, G. , and Zongxuan, S. , 2011, “ Iterative Learning Control of a Camless Valve Actuation System With Internal Feedback,” American Control Conference, San Francisco, CA, June 29–July 1, pp. 408–413.
Pradeep, K. G. , 2012, “ Design and Control of Fully Flexible Valve Actuation Systems for Camless Engines,” Ph.D. thesis, University of Minnesota, Minneapolis, MN.
Homann, W. , Peterson, K. , and Stefanopoulou, A. G. , 2003, “ Iterative Learning Control for Soft Landing of Electromechanical Valve Actuator in Camless Engines,” IEEE Trans. Control Syst. Technol., 11(2), pp. 174–184. [CrossRef]
Carrie, H. M. , Gregory, S. M. , Chauvin, J. , and Petit, N. , 2012, “ Control-Oriented Modeling of Combustion Phasing for a Fuel-Flexible Spark-Ignited Engine With Variable Valve Timing,” Int. J. Eng. Res., 13(5), pp. 448–463. [CrossRef]
Xingyong, S. , Yu, W. , and Zongxuan, S. , 2014, “ Robust Stabilizer Design for Linear Time-Varying Internal Model Based Output Regulation and Its Application to an Electro Hydraulic System,” Automatica, 50(4), pp. 1128–1134. [CrossRef]
Yongsoon, Y. , and Zongxuan, S. , 2014, “ Nonlinear Identification and Robust Tracking Control of a Camless Engine Valve Actuator Based on a Volterra Series Representation,” American Control Conference, Portland, OR, June 4–6, pp. 1535–1540.
Dongfeng Chaoyang Diesel Co., Ltd., 1999, “ CY4102 Engine Specifications,” Chaoyang City, China.
Ashhab, M.-S. S. , Stefanopoulou, A. G. , Cook, J. A. , and Levin, M. B. , 1998, “ Control-Oriented Model for Camless Intake Process,” ASME J. Dyn. Sys., Meas., Control, 122(1), pp.122–130.
Fouad, R. H. , Ashhab, M. S. , Mukattash, A. , and Ldwan, S. , 2012, “ Simulation and Energy Management of an Experimental Solar System Through Adaptive Neural Networks,” IET Sci. Meas. Technol., 6(6), pp. 427–431. [CrossRef]


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Fig. 1

Overall schematic of the model from gt-power

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Fig. 2

Comparison of data obtained from experiments and model simulations at 1900 rpm: (a) pressure versus crank angle and (b) intake port static pressure versus crank angle

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Fig. 3

Comparisons between the profile of base cam and camless

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Fig. 4

FVVA model from AMESim

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Fig. 5

Configuration of optimized FVVA: 1—thread bolt, 2—spring, 3 and 4—cone piston, 5—valve interface, 6—body frame, 7—hydraulic pipe, 8—flange, 9—valve interface, 10—actuator chamber, 11—hydraulic pipe, 12—valve interface, 13—top chamber, 14—connect rod, 15—top piston, and 16—hydraulic pipe

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Fig. 6

Valve event performance parameters for a given cycle: (a) control signals of valve events, (b) valve profile at different engine speeds, and (c) seating velocity at different engine speeds

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Fig. 7

Comparisons of optimization results and baseline results: (a) power versus engine speed, (b) torque versus engine speed, (c) brake thermal efficiency versus engine speed, and (d) volumetric efficiency versus engine speed

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Fig. 8

Comparison of air flow rates into the engine

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Fig. 9

Comparison of optimized and baseline energy losses: (a) friction mean effective pressure versus engine speed and (b) pumping mean effective pressure versus engine speed



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