Significados de unburned fuel en inglés

Knocking occurs when some unburned fuel-air mixture explodes in the wrong place and time in an engine's four-stroke cycle.

The flames had already died down and the place simply smoked and smoldered, stinking of burned plastic and unburned fuel.

Loss due to unburned fuel which is carried by the draft, as small particles, beyond the bridge wall into the setting or up the stack.