Assertion: engine's compression ratio | /r/AtLocation | petrol
Facets:
value: between 12∶1
type: OTHER
value: between 8∶1
type: OTHER
value: typically
type: DEGREE
Source sentences:
text: In petrol (gasoline) engines used in passenger cars for the past 20 years, compression ratios have typically been between 8∶1 and 12∶1.