When the pistons reach their respective bottoms, fresh air flows in from ports at the bottom, while exhaust is rejected through ports at the top. That fresh air is squeezed into a small pocket in the ...

Pop the hood on a classic Mazda RX-7 or RX-8 and the engine bay looks oddly empty. That is the charm of the rotary engine: a compact lump of metal that trades pistons and valves for a spinning ...

As we begin the last article in this series on the basics of the internal combustion engine, let's stop to review what we've covered during the last five articles. We began last May by detailIing the ...