Investigation of the Effects of the Magnetic Circuit Design Parameters on the Electromechanical Valve Actuators

550 163


The paper describes the suitable type of magnetic circuits used in the electromechanical valve actuators (EVAs). Two different types of EVA models with the disc type of magnetic circuits were designed and the effects of various design parameters such as spring constant, moving mass, supply voltage, holding force on the system were investigated. The static and dynamic equations of the system were derived and their numerical solutions were obtained with MATLAB/Simulink program. The detailed theoretical analysis and experimental tests were carried out on the manufactured different prototypes of the EVAs. Simulation and experimental results showed a good agreement with each other. 


Electromechanical valve actuator (EVA), static and dynamic characteristics, magnetic circuit design parameters of magnetic circuit.

Full Text:



Park SH, Lee J, Yoo J, Kim D, Park K (2003) Effects of design and operating parameters on the static and dynamic performance of an electromagnetic valve actuator. Journal of Automobile Engineering, 217: 193-201. doi: 10.1243/09544070360550480

Nitu, C, Gramescu, B, Nitu, S (2005) Application of electromagnetic actuators to a variable distribution system for automobile engines. Journal of Materials Processing Technology, 161: 253-257. doi:10.1016/j.jmatprotec.2004.07.032

Clark RE, Jewell GW, Forrest SJ, Rens J, Maerky C (2005) Design features for enhancing the performance of electromagnetic valve actuation systems. IEEE Transactions on Magnetics. 41-3: 1163-1168. doi:10.1109/TMAG.2004.843342.

Cope D, Wright A (2006) Electromagnetic Fully Flexible Valve Actuator, SAE Technical Paper 2006-01-0044, doi:10.4271/2006-01-0044.

Chladny RR, Koch CR, Lynch AF (2005) Modeling automotive gas-exchange solenoid valve actuators. IEEE Transactions on Magnetics 41-3: 1155-1162. doi:10.1109/TMAG.2004.841701

Kamis, Z. (2005) The investigation of design and control of electromechanical actuator for engine valves (in Turkish). PhD Dissertation. University of Uludağ.

Xiang, JY (2002) Modeling and control of a linear electro-mechanical actuator (LEMA) for operating engine valves. Industry Applications Conference, 37th IAS Annual Meeting. Conference Record of the (Volume:3). doi: 10.1109/IAS.2002.1043799

Eyabi P, Washington G (2006) Modeling and sensorless control of and electromagnetic valve actuator. Mechatronics. 16:159-175. doi:10.1016/j.mechatronics.2005.11.008.

Peterson KS (2005) Control methodologies for fast & low impact electromagnetic actuators for engine valves. Dissertation. The University of Michigan.

Mohamed E (2012) Modeling and performance evaluation of an electromechanical valve actuator for a camless IC engine. International Journal of Energy and Environment. 3-2: 275-294.

Velasco CIH (2011) Modelling, analysis, control and experimental validation of electromechanical valve actuators in automotive systems. Dissertation. University of Naples Federico II.

Chukwuneke JL, Achebe CH, Okolie PC, Anisiji OE (2013) Modelling of electromechanical control of camless internal combustion engine valve actuator. International Journal of Science and Engineering Investigations. 2-15: 123-136.

Topcu, EE., Kamis, Z., Yüksel, I. (2008) Simplified numerical solution of electromechanical systems by look-up tables. Mechatronics. 18:559–565. doi:10.1016/j.mechatronics. 2008.05.006

Roters HC (1941) Electromagnetic devices. John Wiley, USA.

Sefkat G (2010) Investigating static and dynamic characteristics of electromechanical actuators (EMA) with MATLAB GUIs. Computer Applications in Engineering Education. 18-2:383-396 (2010) doi: 10.1002/cae.20279

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.