What is the ignition temperature of oil?
2 Answers
Gasoline has an ignition temperature of around 427°C, while diesel ignites at approximately 220°C. Hazards of low ignition point: An excessively low ignition point indicates the presence of light components in gasoline, which poses safety risks during storage, transportation, and usage. It can also lead to engine malfunction. Relationship between gasoline's ignition point and flash point: Gasoline is highly volatile with a low flash point of about 28°C. The flash point refers to the minimum temperature at which a fuel can vaporize to form an ignitable mixture with air near its surface, while the autoignition temperature is the lowest temperature at which it spontaneously ignites in normal atmosphere without an external source of ignition. Generally, the lower the flash point, the higher the autoignition temperature. Therefore, gasoline has a lower flash point but higher autoignition temperature than diesel. To conclude, gasoline's high volatility (unlike diesel which has negligible volatility) and low flash point make it more combustible than diesel.
As someone who has driven for over a decade, I understand that the flash point of oil is quite crucial for automotive safety. Engine oil typically has a flash point above 200°C, with some premium oils reaching around 300°C. This is because engine temperatures can rise to over 100°C or even higher during operation, and the oil must remain stable without igniting to be considered safe. Once when I was repairing my car, oil accidentally splashed onto a hot exhaust pipe that had just been turned off, but it didn't catch fire thanks to the high flash point, preventing a potential hazard. I recommend regularly changing the oil and conducting inspections to prevent oil leaks and buildup, especially in high-temperature environments, as this can reduce accidents. Choosing high-quality branded engine oil is also important—the flash point parameters are indicated in the product manual, so don't overlook these small details.
