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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Zulkifli, S.A. Karsiti, M.N. Aziz, A. |
| Copyright Year | 2008 |
| Description | Author affiliation: Univ. Teknol. PETRONAS, Bandar Sri Iskandar (Zulkifli, S.A.; Karsiti, M.N.; Aziz, A.) |
| Abstract | Starting a free-piston linear engine-generator (LG) involves reciprocating a freely moving piston-magnet-translator assembly between two oppositely placed engine cylinders for combustion to occur. The machine is operated as a brushless linear motor to produce the required motion. However, due to the very large peak compression force during starting, limited current rating of stator coils and insufficient motor force constant, it is not possible to push the translator end to end in a single stroke. A strategy is proposed which utilizes the air-spring quality of the engine cylinders prior to combustion. Energizing the coils with fixed DC voltage and open-loop, rectangular commutation of injected current, sufficiently high motoring force is produced to reciprocate the translator in small amplitudes initially. Due to repeated compression-expansion of the engine cylinders and constant application of motoring force in the direction of natural bouncing motion, the translatorpsilas amplitude and speed is expected to grow - due to mechanical resonance - to finally reach the required parameters for combustion. This work discusses the starting problem and its mechanical aspects for a specific LG configuration, builds a mechanical model of LG and presents simulation results on the viability of the starting strategy using different values of constant-magnitude motoring force. |
| Starting Page | 1 |
| Ending Page | 7 |
| File Size | 1051298 |
| Page Count | 7 |
| File Format | |
| ISBN | 9781424418480 |
| DOI | 10.1109/VPPC.2008.4677748 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-09-03 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Resonance Internal combustion engines Pistons Engine cylinders Power generation Flywheels Commutation Coils Automotive components Motion control Permanent-Magnet Brushless Motor Free-Piston Linear Engine Linear Electric Generator Linear Generator Starting Rectangular Commutation |
| Content Type | Text |
| Resource Type | Article |
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