Assertion: engine | /r/CapableOf | use the piston
Facets:
value: to drive the crankshaft
type: PURPOSE
value: to accomplish scavenging
type: PURPOSE
value: as a positive displacement pump
type: PURPOSE
Source sentences:
text: While a 4-stroke engine uses the piston as a positive displacement pump to accomplish scavenging taking 2 of the 4 strokes, a 2-stroke engine uses the last part of the power stroke and the first part of the compression stroke for combined intake and exhaust.
text: An engine with a 4-cylinder setup uses four pistons, which are usually arrayed in a line, to drive the crankshaft.