eprintid: 19482
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/94/82
datestamp: 2024-06-04 14:11:57
lastmod: 2024-06-04 14:11:57
status_changed: 2024-06-04 14:05:49
type: article
metadata_visibility: show
creators_name: Zulkifli, S.A.
creators_name: Mohd, M.S.
creators_name: Abd Aziz, A.R.
title: Modeling and Validation of Engine Cylinder Pressure During Starting of Free-Piston Linear Generator by Brushless Motor Commutation
ispublished: pub
keywords: Engine pistons; Expansion; Linear motors; Mass transfer, Brushless motors; Compression-expansion; Cylinder pressures; Expansion process; Free piston; Free-piston linear generators; Linear engine generators; Mechanical modeling; Modeling and validation; Pressure profiles, Engine cylinders
note: cited By 0; Conference of 7th International Conference on Production, Energy and Reliability, ICPER 2020 ; Conference Date: 14 July 2020 Through 16 July 2020; Conference Code:284729
abstract: This paper describes mechanical modeling of a specific configuration of free-piston linear engine-generator (FPLG) during starting, by brushless commutation of linear motor.To account for piston blow-by, or air leakage through piston rings at low starting speeds, the model incorporates an air mass transfer algorithm for the air compression-expansion process in the engine cylinders.The model is verified with experimental data.Pressure profiles obtained during experimental validation of the FPLG are discussed, for different motoring conditions.The improved model shows a reduction of 28 in compression pressure compared to the ideal case.In single-stroke tests, the airflow corrective factor value of C = 3.7 � 10�7 is found to give the closest profile to experimental pressure for the right cylinder and C = 5.5 � 10�7 for the left cylinder, while C = 4.1 � 10�7 best matches the data of cyclic motoring tests.Results show that by increasing motoring voltage, the piston�s amplitude remains unchanged, since increasing motoring energy leads to better compression-expansion process, more effective air spring and a pressure profile closer to the lossless system. © 2023, Institute of Technology PETRONAS Sdn Bhd.
date: 2023
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85140772179&doi=10.1007%2f978-981-19-1939-8_23&partnerID=40&md5=90df1e551eec2c0851166a6dff43f554
id_number: 10.1007/978-981-19-1939-8₂₃
full_text_status: none
publication: Lecture Notes in Mechanical Engineering
pagerange: 263-279
refereed: TRUE
citation:   Zulkifli, S.A. and Mohd, M.S. and Abd Aziz, A.R.  (2023) Modeling and Validation of Engine Cylinder Pressure During Starting of Free-Piston Linear Generator by Brushless Motor Commutation.  Lecture Notes in Mechanical Engineering.  pp. 263-279.