Some engines use fewer strokes per cycle. A two-stroke engine accomplishes everything in two movements of the piston. But it's sloppier, because it burns oil and leaves some fuel unburnt.

Well, that claim is utter hokum here. The combustion cycle is textbook two-stroke. Can we believe the other claims Granada, Spain-based INNengine is making for its e-Rex "Patented 1 Stroke" engine?

Back in late 2020, American defense contractor GE announced the arrival of something it referred to as the “world’s first-ever flight-weight, three-stream adaptive cycle engine.” The unit ...

Variable cycle engine design embodies a transformative approach in aero‐propulsion, enabling engines to adapt their thermodynamic cycle to meet diverse operational demands, from fuel efficiency ...

Trick-Cycle Turbine Ltd. (TCT) is a South Dakota-based company led by inventor Reggie Huff that has created an engine design known as the Tomahawk TX Trick-Cycle Turbine engine.

Compared to the four-stroke engine that produces one power stroke per two revolutions at 3,000 rpm, the four-stroke has 1,500 power strokes while the six-stroke would have 2,000.