AKI

AKI: Anti-Knock Index

• Definition: AKI stands for Anti-Knock Index, which is an average of two measurements: Research Octane Number (RON) and Motor Octane Number (MON). It is used to rate the anti-knock properties of gasoline.
• Function: AKI indicates the gasoline’s resistance to engine knocking or detonation under compression in an internal combustion engine. Higher AKI values signify greater resistance to knocking.
• Retail Gasoline Pumps: The AKI number, typically displayed as 87, 89, or 92 octane, indicates the gasoline’s anti-knock performance available for consumer vehicles. Higher octane ratings (e.g., 92) generally indicate better performance and are suitable for high-performance or high-compression engines.
• Racing Gasoline: Racing fuels often have higher AKI values, ranging from 100 to 118, to meet the demands of high-performance racing engines and to prevent engine knocking under extreme conditions.

Understanding the AKI rating is essential for selecting the appropriate gasoline for different types of vehicles and engines, ensuring optimal performance and engine health.