In Thermodynamics, we’ve started studying more cycles. Specifically, engine cycles. This is a pretty interesting point, as you can clearly see examples of these types of cycles in real life. We’ve studied the Otto Cycle, the Diesel Cycle, and more.
The key difference between these cycles is how they bring in heat. In the Otto cycle, heat is brought in at a constant volume, whereas in the Diesel cycle, heat is brought in at a constant pressure.
There are only two equations that we needed to learn, however, which were the two new thermal efficiency equations. Most of it is now being able to visualize and understand what is happening at each phase of the cycle. The easiest way is through creating graphs of the process path of the cycle.