How does the output of one rotor compare with the output of a piston engine?
Look again at the working chamber. How many of these chambers are there in the housing?
There are three - three working chambers between the rotor and housing, and three lobes on the rotor. This means that for each complete rotation of the rotor, there are three power pulses. Let’s see how this occurs.
Start near the end of an intake phase for working chamber A. Apex 1 is compressing the fresh fuel-air mixture as it approaches the plugs. At the same time, chamber B has ignition and combustion, and the start of a power phase. Chamber C is full of exhaust gases being pushed out of the open exhaust port.
The mixture in chamber A keeps being compressed, getting ready for ignition. Chamber B has uncovered the exhaust port and is starting to push out its exhaust gases. Chamber C has moved on for more fuel-air mixture.
Chamber A ignites. The combustion produces a power phase for A. Chamber B keeps pushing out exhaust gases. Chamber C‘s inlet port is about to be closed after receiving more mixture.
Chamber A moves on to push out exhaust gases, B gets more fuel-air mixture, and C approaches ignition.
A finishes discharging exhaust gases and moves on for more fuel-air mixture, B is at ignition, and C is pushing out its exhaust gases. Which is where we started.
The 3 chambers continue in different phases. The top chamber is in Intake, the right chamber is in ignition and power, and the bottom one is in exhaust. All at once.
