TDI

TDI: Theoretical Diesel Idid. Something like that. As a part of my Engine Fluid Dynamics course, we are to increase the output of a chosen engine by 15%. This is fairly simple, as there are no restrictions on what you can do, such as turbocharging, adding more valves per cylinder, etc. My group chose to baseline ourselves with a 1.9L VW TDI engine. This It was rated at 90 horsepower at 4,000 RPM, and 149 pound-feet of torque at 1,900 RPM. The engine is undersquare, with a bore of 79.5mm, and a 95.5mm stroke. The compression ratio is 19.5:1 nominal. Peak intake manifold pressure was controlled to 9.6 psig. Simply increasing the turbo pressure and changing the fueling curve is going to get us the power we need, but I am also working out a new cam profile, larger intake valves, cylinder head ports, and valve angle. What you see is a model of the engine which was developed using Ricardo WAVE software. Its a powerful tool, just takes a while to click through everything to get it right. Since all of the parameters for the engine aren't readily available, we are winging it with some of the default values from the tutorials. Fun, just ready to be done with it.