Ceramic Particle Reinforced Camshaft Lobes: A Performance Evaluation and Comparative Analysis

Year 2024, Volume: 12 Issue: 1, 297 - 307, 25.03.2024

Afşın Alper Cerit , Fehmi Nair , Hafız Muhammad Numan Zafar

https://doi.org/10.29109/gujsc.1427270

Abstract

Ceramic reinforced metal matrix composite (CMMC) cams in engines could improve fuel efficiency and wear resistance compared to traditional steel cams but require absolute evaluation. However, ensuring safe CMMC cam operation demands extensive wear testing, mimicking real-world conditions over longer durations instead of limited lab evaluations. This study is an extension of the previously reported feasibility analysis of the ceramic particle reinforced Al matrix composite labs. The performance of the best selected (Al + 20, 30 vol. % SiC(2µm)) composites for a wear duration of 2.5, 5, 7.5, and 15 h is reported with various combinations of pressures and compared with the reference cam lobes. Results showed that the higher content of ceramic particles improved the wear resistance, however, the influence diminished at larger durations due to surface hardening of the composites. The wear performance of the composite (Al + 30 vol.% SiC) reaches 73% of the conventional cams but it also causes significant wear in the counterface due to initiation of three-body-wear by the dislodged ceramic particles.

Keywords

Metal Matrix Composites, Camshafts, Tribology, Powder Metallurgy, Cam materials

Ethical Statement

We declare that this manuscript is original, has not been previously published, and contains no plagiarized material. We have obtained informed consent from all human participants and adhered to all applicable animal welfare guidelines. We have no conflicts of interest to declare.

Supporting Institution

the Scientific and Technological Research Council of Türkiye (TUBITAK)

Thanks

The authors are grateful for the financial support of the Erciyes University Scientific Research Projects Coordination Unit, grant number FBT07-55, and the Scientific and Technological Research Council of Türkiye (TUBITAK), grant number 106M021.

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