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June 22, 2020
June 22, 2020
June 26, 2021
Engineering Design Graphics
A cylinder head design project is used to assess computer aided design skills during a capstone course sequence. The conceptual cylinder head design project is used to ensure that all students are assessed using a similar CAD project. The capstone course sequence generally features a large, multi-year project that may not have CAD components of similar complexity for all students. The geometric model is designed to support the creation of a physical prototype that may be used for airflow development models. Some of the models are printed using filament deposition printing techniques. The geometric model also supports the use of virtual airflow analysis using computational fluid dynamics. Earlier versions of the assignment utilized specifications of existing engine components--valves, valve springs, and valve seats--to guide the design of a four valve per cylinder suitable for compressed natural gas fuel in a long haul truck engine. Later versions of the assignment added the use of parametric tables to drive cylinder head geometry using a spreadsheet. During one capstone series, students designed and cast engine blocks for the prototype cylinder head. During this series, students also used engine simulation tools to predict the performance of the engine. The cylinder head CAD design project has allowed all of the program graduates to be assessed and to ensure that their CAD skills are marketable as they graduate.
Leonhardt, E. (2020, June), Conceptual Cylinder Head CAD Project for Assessment Paper presented at 2020 ASEE Virtual Annual Conference Content Access, Virtual On line . 10.18260/1-2--34323
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