REMEMBER those wailing banshee motorcycles with plumes of acrid blue smoke billowing behind them? Your correspondent came of age astride one. But few two-stroke engines survived the draconian ...

The German automaker sees your four-stroke engine and raises you... two more strokes. Ready for some math? Porsche just patented an engine design titled: "Method for a Combustion Machine With Two ...

The four-stroke engine has dominated internal combustion for more than a century, but a British engineering firm is ready to topple that technology with what it calls a 150-horsepower "five-stroke" ...

It could feel more sporting; the benefiting Alfas are still heavy First there was the four-stroke petrol engine, devised by Niklaus Otto. That's why the four-stroke system is known as the Otto cycle.

The Audi Q1 project is officially official now and reports about the smallest quattro SUV ever are coming out the woodwork. According to a company statement, the debut will take place some time in ...

Two-strokes are far simpler machines than four-stroke engines. They’re also lighter, easier to work on, and downright angrier, pumping out a lot more power per cubic centimeter of displacement, which ...