This is the Stirling Engine for my Machine Design and Manufacturing (MEAM 2010) class.
For the design I chose to make a hamster running in a wheel.
How does a Stirling Engine Work?
1) Heating the gas in the hot cylinder causes it to expand and push the piston outward.
2) The gas is then transferred to the cold cylinder, where cooling reduces pressure and pulls the piston back.
3) The flywheel maintains momentum, ensuring continuous compression, expansion, heating, and cooling cycles.
CAD
The CAD for this project was created using SOLIDWORKS. Most parts were modeled based on provided drawings, while others required me to design within specified constraints. Fasteners were sourced and downloaded from McMaster-Carr. The renders were done using SOLIDOWRKS Visualize.
Isometric View
Back View
Side View
Manufacturing
Nearly all the parts were machined at UPenn's Precision Machining Laboratory using, Mill, Lathe, and CNC Operations. The hexagon-patterned Bedplate was laser cut and outsourced to Send-Cut-Send, while the wooden part of the Base was also laser cut. The materials used included aluminum, brass, and steel. All the parts were polished to achieve a matte finish.
CNC-ing the Balance Weigh
Face milling the Base Plate
Press-fitting bearing for assembly
Isometric View
Back View
Side View
Running
During testing the engine's Flywheel reached speeds over 1700 rpm.