What type of fuel should a 1.4T Sagitar use?
1 Answers
1.4T Sagitar should use 95-octane gasoline to prevent engine knocking. Difference between 92 and 95-octane gasoline: 92-octane gasoline contains 92% isooctane and 8% n-heptane, while 95-octane gasoline contains 95% isooctane and 5% n-heptane. The gasoline octane rating represents the fuel's anti-knock performance. A higher octane number indicates better anti-knock properties, but it does not relate to the fuel's quality. A higher octane rating does not mean the gasoline is better or contains fewer impurities. Anti-knock performance refers to the gasoline's ability to resist knocking during combustion in the engine. It is the primary indicator of gasoline combustion performance. Knocking occurs when gasoline burns abnormally in the engine. The octane rating is designed to measure gasoline's resistance to knocking. A higher octane value means stronger anti-knock performance. Engines with higher compression ratios and higher combustion chamber pressures are more prone to knocking if low-octane gasoline is used. Since 95-octane gasoline has a higher octane content than 92-octane, it provides better anti-knock performance. The choice of gasoline octane should be based on the engine's compression ratio. Using higher-octane fuel unnecessarily is not advisable. If the engine's compression ratio is insufficient, the benefits of high-octane fuel cannot be utilized. Using gasoline that doesn't match the compression ratio may cause premature combustion of the fuel-air mixture during piston compression, negatively affecting engine performance.
