| Answer | Crossword Clue |
|---|---|
| instroke | (in an engine) the stroke during which the piston moves into the cylinder |
| expansions | The increase in the volume of fuel on combustion in the cylinder of an engine, or the piston stroke in which this occurs |
| expansion | The increase in the volume of fuel on combustion in the cylinder of an engine, or the piston stroke in which this occurs |
| scavenges | Remove (combustion products) from the cylinder of an internal combustion engine on the return stroke of the piston |
| scavenging | Remove (combustion products) from the cylinder of an internal combustion engine on the return stroke of the piston |
| scavenged | Remove (combustion products) from the cylinder of an internal combustion engine on the return stroke of the piston |
