In winter, the vehicle cannot start. As the name suggests, when the starter switch is turned, the engine can be heard rotating, but the engine cannot start normally, which means the engine is idling and no smoke comes out. In the case of a fault like this, you can check to see if the fuel you selected has accumulated wax and blocked the fuel supply pipeline. This means that your diesel is not used properly and has become waxy and cannot flow normally. It is necessary to replace the diesel oil with the appropriate grade according to the weather temperature before it can be used normally.
According to the freezing point, diesel can be divided into six types: 5#; 0#; -10#; -20#; -35#; -50#. Since the condensation point of diesel is higher than the freezing point at ambient temperature, diesel is generally selected based on how many degrees the ambient temperature is lowered.
The following introduces the specific ambient temperatures used for each grade of diesel:
■ 5# diesel is suitable for use when the temperature is above 8℃
■ 0# diesel is suitable for use at temperatures between 8℃ and 4℃
■ -10# diesel is suitable for use at temperatures between 4℃ and -5℃
■ -20# diesel is suitable for use at temperatures from -5℃ to -14℃
■ -35# diesel is suitable for use at temperatures from -14°C to -29°C
■ -50# diesel is suitable for use at temperatures from -29°C to -44°C and even lower temperatures.
If diesel with a high condensation point is used, it will turn into crystal wax in the cold environment and block the fuel supply pipe. Stop the flow, so that fuel will not be supplied when the vehicle is started, causing the engine to idle.
This phenomenon is also called fuel wax accumulation or hanging wax. Wax accumulation in a diesel engine is a very troublesome thing. Not only will it fail to start in cold weather, it will also cause certain damage to the high-pressure pump and injectors. Especially today’s diesel engines have relatively high emissions. Unsuitable fuel will cause great damage to the engine. Wax is often attached and heated during operation to produce moisture, which is bound to cause damage to the injector high-pressure pump and even cause malfunction or scrapping.
After reading the above article, I believe you have a certain understanding of diesel selection. If your high-pressure pump, fuel injector or engine spare parts have been damaged, you may wish to come to CCMIE to purchase related spare parts. CCMIE – your one-stop supplier of construction machinery.
Post time: Mar-12-2024