When the gasoline engine is used under the condition that the ambient temperature is lower than -20 °C, the lubricating oil and the fuel oil become thick and sticky, the fuel gasification is insufficient, and the fire is difficult, which makes the gasoline engine start up difficult. In order to ensure that the unit can start successfully within 20 seconds, it is necessary to give the engine a low-temperature start-up measure, such as heating the oil.
