What is the density of 92 and 95 gasoline?
1 Answers
The density of 92-octane gasoline is 0.725g/ml, and the density of 95-octane gasoline is 0.737g/ml. The higher the compression ratio, the tighter the gas is compressed, and the smaller the relative distance between molecules. This shortens the flame propagation path, requiring higher isooctane content in gasoline to reduce the likelihood of detonation, hence the need for higher-octane fuel. Long-term use of incorrect gasoline octane ratings can have the following effects: For vehicles designed for low-octane fuel, accidentally using high-octane gasoline will not cause damage. However, the increase in octane rating alters the fuel's ignition point, leading to delayed combustion in the engine. This reduces the engine's power output and thermal efficiency, resulting in poorer performance as experienced by the driver. For vehicles designed for high-octane fuel, using low-octane gasoline can cause engine knocking. Because the octane rating is too low, the reduced ignition point causes premature ignition during the compression stroke. If detonation occurs before the spark plug fires during the compression stroke, resistance will arise during the upward stroke. This resistance makes the engine run very unevenly. If the knocking is imperceptible, it only increases noise without significant engine damage. However, noticeable knocking indicates severe engine conditions, affecting not only driving stability but also causing abnormal wear on pistons and cylinders, with severe cases leading to cylinder scoring.