Management and Maintenance of Cummins Diesel Generator Solenoid Valve

When the Cummins diesel generator set is running, you can see, hear, touch, and check the smell of the unit while running. The starting method of Cummins diesel generator set, for example, press the start button for three seconds, and you can start. During the three seconds of the startup process, two clicks can be heard under normal circumstances. If it is only for the first ring and the second ring, you need to check that the start solenoid valve is working properly.

For the long-term of a static Cummins diesel generator set, the set itself will be various materials and petroleum, cooling water, diesel, air, after complex chemical and physical changes, there will be hidden units, but continuous damage, we can manage from Diesel and lubricating oil are maintained and repaired.

Please pay attention to the storage location of diesel fuel: diesel fuel tanks should be placed in a closed room. On the one hand, it is a consideration of the fire safety system, on the other hand, diesel fuel will not deteriorate. Due to the change of condensing temperature, due to the water vapor in the air, the condensed water droplets will hang together and connect to the tank wall. If diesel fuel, diesel fuel flows into it will cause excessive moisture, and the diesel engine high-pressure fuel pump with excessive moisture content will gradually Rusty unit components, thorough couplings and other anti-corrosion properties will have a major impact, if it will damage the entire unit, it will be seriously affected. The piston ring slides back and forth along the cylinder wall under high load and high temperature atmosphere. In order to better perform its functions, it is necessary to have a small amount of oil to lubricate the cylinder and piston, but also to properly scrape off the excess oil attached to the cylinder wall to prevent it from running up to keep the oil consumption moderate.

As we all know, during the intake stroke of a four-stroke engine, the pressure in the combustion chamber is lower than the pressure in the crankcase. Because this pressure difference plays a role in pumping oil, the oil passes through the tiny gaps between piston rings, pistons and cylinders. It is sucked into the combustion chamber, resulting in a large increase in oil consumption due to oil leakage. Especially when the engine is idling, the throttle is basically closed, and this phenomenon becomes more serious when the negative pressure in the cylinder is large. In order to control the upward movement of the oil, the outer circle of the two gas rings on the piston is generally made into a tapered surface. The tapered ring can not only lay an oil film on the sliding surface of the piston when it moves up, but also effectively scrape off excess oil at the lower end of the cylinder wall when the piston ring moves down.

In order to more effectively scrape the oil splashed to the lower part of the cylinder wall of the Cummins diesel generator set, a steel-plate combined oil scraper ring is added to the lower part of the second gas ring of the piston. This kind of ring is characterized only by its high contact pressure, and because the upper and lower scrapers can act separately, it has good adaptability even for cylinders with poor roundness. What's more important is that each scraper not only maintains a seal with the sliding part between the cylinder, but also maintains the airtight effect on the oil between the upper and lower ends of the ring groove.

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