Skip to main content


Ignition Spark plugs ignite fuel/air mixture.

As the chamber passes over the spark plugs, they fire to ignite the mixture. All modern Wankel engines have two spark plugs to ensure that the fuel/air mixture burns evenly throughout the chamber.

Explained in

    How a rotary Wankel engine works

    One of the problems with conventional car engine designs is that the pistons move in a straight line up and down in their cylinders, to produce what is known as reciprocating motion. Read more