| A fuel with a higher cetane number will shorten the time during which unburned fuel is emitted to the atmosphere. |
| Biodiesel has a higher cetane number than petrodiesel because of its oxygen content. |
| Increasing the cetane number of the fuel can decrease the amount of knock by shortening the ignition delay. |
| Fuels with good ignition quality give short ignition delays and are assigned high cetane numbers. |
| Higher cetane numbers are usually associated with smoother running engines and ease of engine start-up in cold climates. |
| The higher the cetane number of a diesel fuel, the better the ignition and combustion and the softer and better the concentricity. |
