Winter is coming, and how do you keep the gasoline engines on construction, municipal sanitation, fire rescue, equipment repair and other equipment running properly in the declining temperatures? Remember that our engines, like humans, suffer from the cold and need more care to make sure they work well.
Poor start is often encountered in cold weather and how to ensure that the engine can start normally, do the following four key.
First of all, we need to know that winter gasoline and summer gasoline are different, the difference is mainly gasoline vapor pressure (Reid vapor pressure, referred to as RVP), winter temperature is lower, gasoline evaporation (vaporization ability) will be weakened. Therefore, our country supplies low vapor pressure gasoline (62KPa) in summer (From April 1 to October 31), and high vapor pressure gasoline (69KPa) in winter (from November 1 to March 31). These winter gasoline can improve the engine's starting performance in winter.
API grade (e.g., SJ) it indicates the quality grade of the engine oil. The "S" series stands for gasoline engine oil, the specifications are :SA, SB, SC, SD, SE, SF, SG, SH, SJ,SL,SM,SN, etc.
When the normal operating temperature is reached, the choke valve will return to normal state. After starting, the choke must be fully opened, otherwise it will cause black smoke, insufficient power, carbon deposition and other problems due to high oil-gas mixture ratio and incomplete combustion.
When purchasing equipment, specify a good low-temperature start engine. Most single-cylinder gasoline engines for winter and summer use are not capable of starting at temperatures below -18 degrees Celsius.
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