Every new internal combustion car and truck sold in America today is equipped with a four-stroke engine, as are the vast majority of motorcycles. Today, if you hear the loud, ringing song of a ...

You may have heard your car has a four-stroke engine, but you're not sure what that means. Why are there four? And what is a stroke, anyway? A modern gas engine most commonly uses pistons and a ...

Two-stroke engines are relatively cheaper to manufacture but require more upkeep than four-stroke engines. ... Whenever a car is in use, its pistons pump harder than any action humanly possible.

If you’ve spent any time shopping for a vehicle over the last decade, you’ve noticed it—just about every car company has a ...

Porsche's 6-stroke patent seems to indicate it could eke more power out of an engine Unless you drive an early 2-stroke Saab , your car probably has a 4-stroke engine . But Porsche wants to see if ...

From the January/February 2025 issue of Car and Driver. A patent for a six-stroke engine would normally go directly into our crackpot-engine file, but when the patent filer is Porsche, we feel ...

By design, the six-stroke engine of Porsche's dreams would use a novel operation; the automaker says the process is "six individual strokes that can be divided into two three-stroke sequences." ...

The Australian firm settled on a 1.2-litre three-cylinder design that was smaller than an equivalent overhead-valve four-stroke, £100 cheaper to produce and more powerful to boot.