Consequently, the direction of the power stroke might be reversed.

This used high pressure steam to drive the engine by one power stroke.

In one revolution of the rotor, four power strokes are created.

Barrett, not known for his power stroke, hit the ball into the left field stands.

If one were on dead center, the other would be off and ready to start the engine turning with a power stroke.

The new system allowed better cylinder filling and a longer power stroke.

This part of the power stroke is called "adiabatic expansion."

Requires a supply of pure water to act as the medium for the second power stroke.

Fuel is then injected and fired to produce the power stroke.

There is no power stroke on the final 180 of rotation.