What issue can lead to the production of carbon monoxide during combustion?

The production of carbon monoxide during combustion is closely associated with the condition of low temperature. When combustion occurs at low temperatures, the combustion process does not achieve optimal efficiency. In these cases, there is often insufficient energy available to fully oxidize the carbon in the fuel to carbon dioxide. As a result, some carbon remains unoxidized, leading to the formation of carbon monoxide.

While flame stability and flame impingement can affect the efficiency of combustion and contribute to various operational issues, they are not directly responsible for the formation of carbon monoxide in the same manner that low temperature is. High pressure can influence the combustion environment but does not inherently lead to the production of carbon monoxide either. Instead, it can affect the overall combustion reaction and the behavior of flame dynamics, but again, it is not a direct cause of carbon monoxide formation.