JECET; June 2014-August 2014; Vol.3.No.3, 1609-1618. E-ISSN: 2278–179X Journal of Environmental Science, Computer Science and Engineering & Technology An International Peer Review E-3 Journal of Sciences and Technology Available online at www.jecet.org Section C: Engineering & Technology Research Article JECET; June 2014-August 2014; Sec. C, Vol.3.No.3, 1609-1618 1609 Motions Study of a Single Cylinder High Speed Spark Ignition Linear Engine with Electromagnetic System as Return Cycle Erastus O. Ogunti* and Popoola R. Olaoluwa *Department of Electrical and Electronics Engineering, SEET Federal University of Technology Akure (FUTA), Ondo State, Nigeria Received: 03 May 2014; Revised: 28 May 2014; Accepted: 04 June 2014 Abstract: This paper looks into the design and modeling of a linear engine. Quite a number of researches to improve the almost ubiquitous engines are going on. The linear engine is any engine that does not work by rotation but by linear reciprocating motion (a kind of up and down motion) by removing the crank mechanism of the conventional internal Combustion(IC) engines. Hence after the combustion process, a restoring force is required. Sequel to the development and design of the linear engine, it is necessary to carry out motion and torque analysis. The principle of combustion as it relates to the working of the linear engine is also explicated and its oscillation profiles are examined. The system relevant mathematical laws are modeled in 3D and engines models have been simulated. Five different software tools have been used in the simulation process. Autodesk Inventor3D has been used to design assembly and section out the engine models. However, combustion dynamics and torque profile generation was carried out in MATLAB. Electromagnetic force design and restoration process was shown using Simulink and the final simulation of the engine oscillation is carried out by Autodesk 3Ds max and VRML linked up with the Simulink package. Results have been generated in kinematics showing the pressure volume profiles and in dynamics showing the torque generation and work-done profile of the new engine model. The results have been compared to that of the conventional Otto cycle engine to observe the electromagnetic effect. Keywords: Linear Engine, dynamic Analysis, kinematics, Electromagnetics, MATLAB.