OICC Press Majlesi Journal of Electrical Engineering 2345-3796 11 4 2024 02 18 Electromagnetic Valve Control in Internal Combustion Engines by PID EN Hossein Sharifi Department of electrical engineering, Majlesi Branch, Islamic Azad University, Isfahan, Iran 0000-0001-9543-5327 Hasan Ghafori Department of Advanced Engineering Research, Majlesi Branch, Islamic Azad University, Isfahan, Iran Behrooz Sadeghian Department of Aerospace Engineering, Malek Ashtar University of Technology, Shahin Shahr, Iran Journal Article 2024 02 18 Engines with variable poppet valve timing systems are among numerous efforts that aim to reduce engine emissions and/or increase efficiency. In the present paper we have investigated the stability of a magnetic valve system in MATLAB. First we designed the magnet and interactive forces inside the electromagnetic valve system, then we produced a mechanical model for the system by using a two degree of freedom mass and spring system and finally designed a PID controller to maintain system stability. The results of the present study indicate that the controller had decreased the maximum valve displacement domain and duration from 2 mm to 0.001 mm and 0.1 seconds to 0.022 seconds, respectively. Poppet valve settling speed was 0.0126 and had a standard deviation of 0.1304 while the armature settling speed was 0.0184, with a standard deviation of 0.1363. Passes for the phases were -37.5 and -169, with gains of 10.3 and -9.35.