Assertion: carbon monoxide | /r/CreatedBy | the engine
Facets:
Source sentences:
text: In modern cars and trucks, the levels of carbon monoxide produced by the engine are much higher than the levels that are actually released to the atmosphere.
text: Carbon monoxide is produced in the engine and is one of the three exhaust gasses that result from combustion however if your car has a functioning catalytic converter the carbon monoxide should be transformed into carbon dioxide.