Assertion: gas's amount | /r/CapableOf | reduce the air-fuel ratio
Facets:
value: to 13
type: OTHER
value: to the stoichiometric 14.7
type: OTHER
value: typically
type: DEGREE
Source sentences:
text: The amount of extra fuel varies, but typically reduces the air-fuel ratio to between 11 and 13, instead of the stoichiometric 14.7 (in petrol engines).