Development of a novel engine starter using a compression spring
Automotive starting system requires an external torque to overcome the cranking resistance in order to initiate the engine operation. Conventionally, this is accomplished by applying an electrical starter motor powered by a lead acid battery. As commonly known, this battery consists of harmful chem...
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| Format: | Thesis |
| Language: | English English |
| Published: |
2017
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| Subjects: | |
| Online Access: | http://eprints.utem.edu.my/id/eprint/20531/1/Development%20Of%20A%20Novel%20Engine%20Starter%20Using%20A%20Compression%20Spring.pdf http://eprints.utem.edu.my/id/eprint/20531/2/Development%20of%20a%20novel%20engine%20starter%20using%20a%20compression%20spring.pdf http://eprints.utem.edu.my/id/eprint/20531/ https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=105945 |
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| Summary: | Automotive starting system requires an external torque to overcome the cranking resistance in order to initiate the engine operation. Conventionally, this is accomplished by
applying an electrical starter motor powered by a lead acid battery. As commonly known, this battery consists of harmful chemical substances which give rise to lots of pollution through explosions, fires, leaks, and poisoning the environment that contaminates and destroys the ecosystem. Alternatively, the spring offers a means for mechanical energy storage in elastic deformation and is a well suited replacement in the engine-starting application due to its ability to provide high power densities and to discharge quickly. Therefore, in this project, the focus is on designing the compression spring that provides sufficient amount of force to rotate the starter shaft by achieving the minimum torque required on the starter pinion. Besides that, the spring is tested through fatigue analysis by using calculations and the Finite Element Analysis (FEA) simulation in ANSYS WORKBENCH. As a comparison between both results on the spring life, the results of simulation is lower than that from calculations. The analysis offers a life estimation of the mechanical starter where it can be expected to last 317, 960 cycles of the operation before failure. Moreover, the new concept of mechanical spring starter is modelled in CATIA V5R20 in order to test the physical working of the compression spring as an energy storage device and also to test workings of the other mechanisms such as rotating part, locking mechanism and engagement of pinion. In the end, the results seem very promising. |
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