Rotating valve cylinder head for a conventional four-stroke engine

Carey, Mattew John Frederick (2005). Rotating valve cylinder head for a conventional four-stroke engine B.Sc Thesis, School of Engineering, The University of Queensland.

       
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Author Carey, Mattew John Frederick
Thesis Title Rotating valve cylinder head for a conventional four-stroke engine
School, Centre or Institute School of Engineering
Institution The University of Queensland
Publication date 2005
Thesis type B.Sc Thesis
Supervisor Dr Bill Daniel
Total pages 87
Language eng
Subjects 290501 Mechanical Engineering
Formatted abstract

Throughout the history of the internal combustion engine, satisfying airflow parameters has absorbed countless lifetimes of research and development. It is a specialized field, which can rely on experience as much as science. To illustrate this point by way of an example, there are currently in excess of twenty, camshaft manufacturers in Australia who combined, offer over 400 different profiled cams for the 5.7 litre generation II Chevrolet engine. For any given engine, each manufacturer will specify a different shaped cam based on their technicians’ experience and any two cams may yet still deliver similar performance. However, there are certainly trends associated with cam profiling based on sound fluid dynamics so from a given starting point a camshaft can be tailored or tuned until it is optimized. The infinite range of profiles, which are possible with this new design, would require research into complex fluid dynamics to optimize a design. This type of investigation is beyond the scope of this study and would most likely be incompatible or inaccurate given the totally different layout of the components.

As a platform for this study, a generic design will be specified to suit a particular engine capacity. This will provide a set of basic parameters, which the design will fit into. The cylinder bore, stroke, engine RPM, power output, certain aspects of air flow, lubricant system and the camshaft drive chain mechanism will be a guideline for the design. This can be used to provide some basic comparisons of expected performance gains due to parasitic loss and it’s ability to provide airflow.

Keyword Valve cylinder head
Cylinder design
Additional Notes * Mechanical engineering undergraduate theses. Sem 2, 2005

Document type: Thesis
Collection: UQ Theses (non-RHD) - UQ staff and students only
 
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