It's quite different. What you show on from the Prius is basically the way that the power is delivered to the transmission and the generator.
Trying not to get too technical...
It is kind of hard to explain the way that the Crankshaft works without moving diagrams or models, but lets see if I can find some web resources...
Alright, cool found something with motion:
http://auto.howstuffworks.com/engine.htm
Alright, looking at the diagram
O is the crankshaft on a standard piston engine.
N is the connecting rod. What this guy has designed is a crankshaft that allows the connecting rod to be able to go straight up and down.
Hopefully this clears it up a little bit.