Unburned Hydrocarbons

Some articles on unburned hydrocarbons, unburned:

Wankel Engine - Design - Engineering - Fuel Economy and Emissions
... to relatively incomplete combustion of the air-fuel charge, with a larger amount of unburned hydrocarbons released into the exhaust ... paradoxically enriching the air-fuel ratio to the point where the unburned hydrocarbons (HC) in the exhaust would support complete combustion in the ... research, the extreme that controls the amount of unburned HC in the exhaust is the rotor surface temperature, higher temperatures producing less HC ...