Frequent use of diesel engine consumption materials and the use of common sense

Frequent use of diesel engine consumption materials and the use of common sense

.Oil filter:

In use, the engine oil will contain some foreign particles. These particles have friction-generated particles, parts do not clean the remaining impurities, and there are also parts of the early oxidation metamorphic particles produced by high temperatures. These particles contain iron pins, sand particles, and colloidal particles. And so on, mixed in the oil will cause frictional side effects, damage and even burn tile, reduce the service life and reliability. The oil filter must be used on the diesel engine. The oil filter is mainly used for paper filtration. The filter paper filters the impurities in the oil. Some filters can be divided into the primary filter and the fine filter. The 0.040mm particle can be filtered out by 100%, and the 0.030-0.040mm particle can be filtered out by 99%. If the particle is lower than 0.030mm, if the concentration is too large, the oil will be deteriorated. Can be more than 0.010mm particles can be filtered out 100%, 95% of the filter over 0.005mm, if you use a poor quality oil filter, in case of use in the event of blockage or resistance increases so that the main oil pressure drop caused The amount of oil in the main bearing is not enough, causing serious consequences.

.Diesel filter:

The diesel filter mainly filters out the dust and impurities that enter the fuel pump, because the dust and impurities will damage the fuel pump and the injector and other components, so the user must use high-quality standard diesel filter.

Water grid:

Coolant should be filtered because of mud, sand, dust, oil and scale, iron after processing, rust deposits, precipitated protective agents, and deteriorating gasket debris. These dirties accumulate in the engine, especially After a certain period of storage, (supplementary water also contains dust, silt, etc.) will hinder the operation of the thermostat, contaminate and plug the water pipes in the oil cooler, block the radiator (water tank), hoses, pipes and cylinders The cooling water channel in the body. Silt and other scales of metal shavings may cause abrasion of the impeller and the shaft of the pump, causing damage to the cylinder liner seal, the seal of the pump's face and the wear of the thermostat, these particles and metal chips, seal fragments, etc., if stuffed into the thermostat, The thermostat can no longer be opened and closed, so a standard water filter must be used and replaced regularly.

.air filter:

The Cummins diesel engine (generator unit) uses an ordinary light single-stage dry air filter. The high-quality standard filter element is made of specially processed filter paper and can be replaced with an efficiency of 99.5%. Fresh air is filtered from the air. Into the air filter around the device, the air required for diesel engine combustion also depends on the air filter, so the smaller the resistance of the air filter, the better, after a certain time, the air filter will become dirty, The resistance will also increase. If the resistance increases beyond the specified value, the diesel engine will not be able to get enough air for combustion, so it will produce smoke, lack of power, etc., and the air resistance indicator installed in the air intake The device can indicate whether the air resistance is normal. If the resistance exceeds the specified value, the indicator will change from normal green to abnormal red. Then the filter should be replaced and then pressed at the end of the indicator to restore it to green. .

.Oil oil:

The use of high quality oil, as well as the use of appropriate oil changes and oil filter replacement cycles, are an important factor in extending the life of the diesel engine. Cummins and Rolls-Royce do not recommend any specific grade of motor oil.

The role of oil:

1) The oil used in high-speed diesel engines such as CUMMINS & PERKINS must be multi-functional and have the following main functions:

Lubrication: Provide oil film lubrication between moving parts to reduce friction and wear.

Cooling: As a thermal medium, it removes heat from the critical surface and acts as a cooling element.

Sealing: filling the cylinder wall, the uneven surface of the valve stem and sealing in the oil seal of the turbocharger.

Cleaning: Suspend dirt in it so as not to form scale on the surface of engine parts, and to clean it.

Damping and cushioning: especially high pressure components such as gears and push rods.

Prevents oxidation and corrosion: protects parts.

2) When the engine oil in the diesel engine loses the above functions, it must be replaced. The engine oil is rarely lost under normal conditions, but it is easily contaminated, thus losing the role of protecting the diesel engine. Oil contamination is a normal result of the diesel engine after operation. During the operation of the diesel engine, many contaminants enter the engine oil. They are: By-products from the combustion of diesel engines: Bitumen produced from incomplete combustion of fuel oil, soot, and acids. Acids, coke, and scale: Due to cracking of engine oils or decomposition Dirt produced by oxidation: Contaminants that enter the diesel engine through intake air, fuel oil, and engine oil or oil.

2. Performance specifications of oil

The API (AMERICIAN, PETROLEUM, INSTITUTE American Petroleum Institute) classification of CF-4 and SAE15W-40 grades is the American Petroleum Institute's current level for high-speed diesel engines.

.Coolant:

Cooling water for diesel engines should be clean. There are no corrosive compounds such as chlorides, sulfates and acids. The water should be slightly alkaline. The PH value is between 8.5-10.5, and DCA rust-proof water is added in a certain proportion.

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