Hello all,
Found this forum about a week ago. I am currently a Mechanical Engineer in training and am very interested in engine design. About a year ago, the idea of a miniature engine fascinated me so much I decided to take a whack at designing one myself. At the time I was learning some 2D cad stuff in college, mostly Autodesk AutoCAD 2012. I designed a very crude 900cc direct acting over head cam 4 cylinder engine with 9:1 compression. I had been enamored with engine design for a while before that and it was a completely indigenous design. It was, lets say, an interesting design. The lobe separation angle was set at 90 degrees, the compression ratio was completely accidental that it came out to exactly 9:1, etc... but aside from the cam design issues I think it would have ran.
For my Autodesk Inventor 2013 class I took up actually designing an engine that would be something I could actually make. This time, I was armed with a lot more knowledge, and have came up with a design for a 12.5cc two cylinder, four stroke engine that I have designed to be quite machinable. I am currently still working on getting the design perfected and will probably be asking for design help in the near future. I have about 3 or 4 months to get the design finalized before I have access to my college's machine tool lab. Most of the parts will be made on CNC.
Found this forum about a week ago. I am currently a Mechanical Engineer in training and am very interested in engine design. About a year ago, the idea of a miniature engine fascinated me so much I decided to take a whack at designing one myself. At the time I was learning some 2D cad stuff in college, mostly Autodesk AutoCAD 2012. I designed a very crude 900cc direct acting over head cam 4 cylinder engine with 9:1 compression. I had been enamored with engine design for a while before that and it was a completely indigenous design. It was, lets say, an interesting design. The lobe separation angle was set at 90 degrees, the compression ratio was completely accidental that it came out to exactly 9:1, etc... but aside from the cam design issues I think it would have ran.
For my Autodesk Inventor 2013 class I took up actually designing an engine that would be something I could actually make. This time, I was armed with a lot more knowledge, and have came up with a design for a 12.5cc two cylinder, four stroke engine that I have designed to be quite machinable. I am currently still working on getting the design perfected and will probably be asking for design help in the near future. I have about 3 or 4 months to get the design finalized before I have access to my college's machine tool lab. Most of the parts will be made on CNC.
