eprintid: 20103
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/02/01/03
datestamp: 2024-06-04 14:19:51
lastmod: 2024-06-04 14:19:51
status_changed: 2024-06-04 14:16:36
type: article
metadata_visibility: show
creators_name: Raheem, A.T.
creators_name: Aziz, A.R.A.
creators_name: Zulkifli, S.A.
creators_name: Ayandotun, W.B.
creators_name: Baharom, M.B.
title: Development and Validation of a Free Piston Engine Linear Generator Simulation Model Including Cycle-To-Cycle Variation and Ignition Timing Sub-Models
ispublished: pub
keywords: Crankshafts; Electric generators; Engine pistons; Free piston engines; Ignition; MATLAB; Thermal efficiency, Cycle to cycle variation; Engine performance; Free-piston engine; Ignition timing; Linear generators; Modeling results; Performance; Simulation model; Submodels; Top dead center, Timing circuits
note: cited By 0; Conference of International Conference on Renewable Energy and E-mobility, ICREEM 2022 ; Conference Date: 1 December 2022 Through 2 December 2022; Conference Code:309409
abstract: Free piston engine linear generator (FPELG) is a novel and promising engine for the next generation of hybrid engines. It has several benefits over conventional engines, including minimal friction, a multi-fuel engine, fewer parts, minimal emissions, and excellent thermal efficiency. FPELG is an engine that lacks a crankshaft, and cycle-to-cycle variation (CCV) is viewed as the critical challenge affecting its stability and performance. Therefore, in the present research, the simulation model of FPELG including two sub-models was developed. The CCV and ignition timing (IG) were proposed as sub-models. The FPELG model was demonstrated and run via MATLAB/Simulink. The experimental data were used to validate the model. The validation results indicate that the error was about 5 for the most of cycles, which is within an acceptable range, indicating that the model is valid for accurately predicting future outcomes. Analysis of the simulation model's result showed that the CCV occurs when certain parameters vary during engine running, one of which is the IG variation. Two scenarios were executed for the IG variation in order that CCV variation could be generated using IG variation. In the first scenario where IG occurs after top dead centre (TDC), the modeling results indicated the formation of two peaks and low in-cylinder pressure. While in the second scenario which involves IG occurring early before TDC, the single peak shape and high in-cylinder pressure were produced. Therefore, the IG significantly impacts on combustion characteristics, which is reflecting on the stability and performance of the FPELG. Therefore, further investigation into the effect of the ignition timing on the combustion characteristics is required. In addition, the optimal IG and control of IG are required for achieving high engine performance with stability, this could be achieved in our next work. © Institute of Technology PETRONAS Sdn Bhd (Universiti Teknologi PETRONAS) 2024.
date: 2024
publisher: Springer Science and Business Media Deutschland GmbH
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85188719917&doi=10.1007%2f978-981-99-5946-4_19&partnerID=40&md5=ef8a03fe5f73e9726e5a03951c7a22a3
id_number: 10.1007/978-981-99-5946-4₁₉
full_text_status: none
publication: Lecture Notes in Mechanical Engineering
pagerange: 239-254
refereed: TRUE
isbn: 9789819959457
issn: 21954356
citation:   Raheem, A.T. and Aziz, A.R.A. and Zulkifli, S.A. and Ayandotun, W.B. and Baharom, M.B.  (2024) Development and Validation of a Free Piston Engine Linear Generator Simulation Model Including Cycle-To-Cycle Variation and Ignition Timing Sub-Models.  Lecture Notes in Mechanical Engineering.  pp. 239-254.  ISSN 21954356