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Heads Under Pressure. Design Project: Instrumented Head for the Clean Snowmobile Challenge. Nick Harker Chris Tockey Peter Britanyak. Project Goals:. Head Re-designed with pressure sensors for in-cylinder pressure data. Modify the combustion chamber to given specs.
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Heads Under Pressure Design Project: Instrumented Head for the Clean Snowmobile Challenge Nick Harker Chris Tockey Peter Britanyak
Project Goals: • Head Re-designed with pressure sensors for in-cylinder pressure data. • Modify the combustion chamber to given specs.
Combustion Chamber dimensions and Specs • Dome radius .75 inches • Cone to plug distance is -.08 inches • Squish velocity of 15-20 m/s • Squish diameter of 1.95 inches • Squish radius from cone to squish .25 inches (double turbo head) • No dome offset • Squish area same as turbo head 34% • Dome height approx. 1 inch as necessary for compression ratio • Dome angle needs to be determined for the correct compression ratio • Compression ratio of 6.5:1
Combustion Chamber Iterations Sparkplug boss protruding into combustion chamber Drawing showing the location of a regular and extended electrode Final iterations of unsymmetrical combustion chambers to bring the sparkplug electrode into the fuel cone
Injector and Sensor Boss Injector and sensor boss passes through the cap to reduce the over all height.
Skidoo 600 Head Design Skidoo sled will be much easier to adapt to our system
Skidoo Head Skidoo Combustion Chamber Polaris Combustion Chamber
Water Jacket Comparison Skidoo Head Polaris Head
Current Progress • Head designed • Aluminum stock arrived • Received Kistler pressure sensor tools • Received ARP head bolts and gasket material
Current Tasks • Get solid model approved for manufacture Sept. 19 • Complete MasterCam Oct. 9 • Begin machining Oct. 11 • Testing End of Oct.