The goal of my project is to help increase the understanding of how different car parts function. The two parts I chose were a braking system and an Inline-4 (I4) engine. In my project, I created different parts in Onshape and used the assembly feature to create a working animation of an I4 engine, as well as using Blender to animate a braking system. I met with Jacob Nikolajczyk, a Mechanical Engineer, to discuss the importance of 3D CAD models in the engineering space, and how they develop an understanding of different complex systems, for both engineers and non-engineers.
Details of I4 Engine Parts in CAD
Piston Head
Piston Ring
Piston Pin
Connecting Rod Cap
Crankshaft
Connecting Rod
Details of I4 Engine Assembly in CAD
View of connecting rod/rod cap attached to crankshaft
Side view of a piston with Piston rings
Details of crankshaft
Diagonal view of piston with piston rings
Note: An engine's average idle speed is ~1k RPM (Revolutions per Minute), which equates to about 17 revolutions per second. When a car is accelerating, RPMs can range from 2-4k RPMs. Under full power, some supercar engines can reach over 9k RPMs (About 150 times per second.)
Details of Braking System in CAD
Carbon-Ceramic Brake Disc
Brake Pads
Brake CaliperÂ
Brake Assembly