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Abstract: In this study, an electro-mechanical valve (EMV) system for the intake valve of a four stroke, single cylinder, overhead valve and spark ignition (SI) engine was designed and constructed. An engine with the EMV system and a standard engine were tested to observe the effects of the EMV on engine performance and emissions at different speeds under full load. The EMV engine showed improved engine power, engine torque and break specific fuel consumption (BSFC). A 66% decrease in CO emissions was also obtained with the EMV system, but hydrocarbons (HC) and NO_x emissions increased by 12% and 13% respectively.

[1] Ahmad, T., Theobald, M.A., 1989. A Survey of Variable-Valve-Actuation Technology. SAE Paper 891674.

[2] Akbaş, A., 2000. The Effects of Variable Valve Lift and Timing on Spark Ignition Engine Performance. MS Thesis, GÜ Fen Bilimleri Enstitüsü, Ankara, Turkey (in Turkish).

[3] Asmus, T.W., 1991. Perspectives on Applications of Variable Valve Timing. SAE Paper 910445.

[4] Barkan, P., Dresner, T., 1989. A Review of Variable Valve Timing Benefits and Modes of Operation. SAE Paper 891676.

[5] Boie, K., 2001. Open and Closed-loop Control Strategies for Actuators of an Electromechanical Valve-train Assembly. 3rd Symposium, Control Systems for the Powertrain of Motor Vehicles, Berlin.

[6] Chang, S., Parlikar, T.A., Seeman, M.D., Perreault, D.J., Kassakian, J.G., Keim, T.A., 2002. A New Electromagnetic Valve Actuator. IEEE Workshop on Power Electronics in Transportation, p.109-118.

[7] Çınar, C., 1998. The Effects of Cam Geometry on SI Engine’s Performance. Ms Thesis, GÜ Fen Bilimleri Enstitüsü, Ankara, Turkey (In Turkish).

[8] Cope, D., Wright, A., Corcoran, C.J., Pasch, K., Fischer, D., 2008. Fully Flexible Electromagnetic Valve Actuator: Design, Modelling, and Measurements. SAE Paper 2008-01-1350.

[9] Demmelbauer, W., Ebner, A.D., Lenz, H.P., 1991. Variable Valve Actuation Systems for the Optimization of Engine Torque. SAE Paper 910447.

[10] Dresner, T., Barkan, P., 1989. A Review and Classification of Variable Valve Timing Mechanisms. SAE Paper 890674.

[11] Ergeneman, M., Mutlu, M., Kutlar, O.A., Arslan, H., 1998. Exhaust Pollutants through Vehicles. Birsen Yayınevi, Istanbul, p.21 (in Turkish).

[12] Gould, L., Richeson, W., Erickson, F., 1991. Performance Evaluation of a Camless Engine Using Valve Actuation with Programmable Timing. SAE Paper 910450.

[13] Hammarlund, P., 2008. Simulation and Analysis of a Continuously Variable Cam Phasing Internal Combustion Engine Vehicular Systems. Department of Electrical Engineering, Linköpings Universitet SE-581 83 Linköping, Sweden.

[14] Hatano, K., Lida, K., Higashi, H., Murata, S., 1993. Development of a New Multi-mode Variable Valve Timing Engine. SAE Paper 930878.

[15] Hoffmann, W., Stefanopoulou, A., 2003. Iterative learning control of electromechanical camless valve actuator. IEEE Transactions on Control System Technology, 11(2):174-184.

[16] Kamış, Z., Yüksel, İ., 2003. Design of electromechanic valve mechanism and investigation of design parameters. Mühendis ve Makine Dergisi, 44:523 (in Turkish).

[17] Kamış, Z., Yüksel, İ., 2005. The contribution of spring energy on electro-mechanic valve mechanism’s performance. Mühendis ve Makina Dergisi, 46:543 (in Turkish).

[18] Kassakian, J.G., Wolf, H.C., Miller, J.M., Hurton, C.J., 2005. Automotive electrical systems. IEEE Spectrum, 33(8):22-27.

[19] Krauter, P., Heuser, P., Schebitz, M., 1992. Strategies to Improve SI-engine Performance by Means of Variable Intake Lift, Timing and Duration. SAE Paper 920449.

[20] Lancefield, T.M., Gayler, R.J., Chattopadhay, A., 1993. The Practical Application and Effects of a Variable Event Valve Timing System. SAE Paper 930825.

[21] Lee, J.C., Lee, C.W., Nitkiewicz, J.A., 1995. The Application of a Last Motion VVT System to a DOHC SI Engine. SAE Paper 950816.

[22] Leroy, T., Chauvin, J., Petit, N., 2008. Motion planning for experimental air path control of a variable-valve-timing spark ignition engine. Control Engineering Practice, 17(12):1432-1439.

[23] Levin, M.B., Schlecter, M.M., 1996. Camless Engine. SAE Paper 960581.

[24] Moriya, Y., Watanabe, A., Uda, H., Kawamura, H., Yoshioka, M.A., 1996. Newly Developed Intelligent Variable Valve Timing System—Continuously Controlled Cam Phasing as Applied to a New Liter Inline Engine. SAE Paper 960579.

[25] Nitu, C., Gramescu, B., Nitu, S., 2004. Application of electromagnetic actuators to a variable distribution system for a automobile engines. Journal of Materials Processing Technology, 161(1-2):253-257.

[26] Peterson, K.S., Stefanopoulou, A.G., 2004. Extremum seeking control for soft landing of an electromechanical valve actuator. Automatica, 40:1063-1069.

[27] Pischinger, M., Salber, W., Staay, F.V., Baumgarten, H., Kemper, H., 2000. Low fuel consumption and low emissions electromechanical valve train in vehicle operation. International Journal of Automotive Technology, 1(1):17-25.

[28] Stein, R.A., Galietti, K.M., Leone, T.G., 1995. Dual Equal VCT—A Variable Camshaft Timing Strategy for Improved Fuel Economy and Emissions. SAE Paper 950975.

[29] Stubbs, A., 2000. Modeling and Controller Design of an Electromagnetic Engine Valve. MS Thesis, University of Illinois, Illinois, p.68.

[30] Tai, C., 2002. Modeling of Control of Camless Engine Valvetrain Systems. PhD Thesis, University of California, Los Angeles, p.139.

[31] Trevett, R.N., 2002. New Technologies for 42 V Bus Automobile of the Future. Partial Fulfillment of the Requirements for Graduation with Honors, South Carolina Honors College.

[32] Urata, Y., Umiyama, H., Shimizu, K., Fujiyoshi, Y., Sono, H., Fukuo, K., 1993. A Study of Vehicle Equipped with Non-throttling SI Engine with Early Intake Valve Closing Mechanism. SAE Paper 930820.

[33] Wang, Y., 2001. Camless Engine Valvetrain: Enabling Technology and Control Techniques. PhD Thesis, University of California, p.194.

[34] Wang, Y., Stefanopoulou, A., Peterson, K., Megli, T., Haghgooie, M., 2002. Modeling and Control of Electromechanical Valve Actuator. SAE Paper 2002-01-1106.

[35] Yan, Z.D., Zhou, C.G., Shen, Y.M., Yu, X.L., Jin, H., 2000. The Effect of LPG on Power and Emissions in Engineering Vehicle. Better Air Quality (BAQ) Motor Vehicle Control and Technology Workshop, Hong Kong.