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Senin, 12 Desember 2011

Basic series Diesel Engine

Although diesel engines have a deficiency in terms of noise than petrol engines. Dieselengines because the fuel efficiency advantages of choice for many users of motor vehiclefuel. As the effects of increasingly strict regulations on environmental pollution, dieselengines became one of the options in the use of internal-combustion engine system.Internal-combustion engines we encounter in car systems, ships, portable electricgenerators, buses, tractors etc. One of the advantages of diesel engines is to use thesystem Compression-ignition combustion (burning-press), which does not require spark plugs.
This system enables the achievement of high initial pressure before the combustionprocess, this will increase the thermal-effisiency compared to other systems. Anotheradvantage is the flexibility of fuel types that can be used, since the combustion that occursdoes not need to control sparks, various types of fuel can be used. For example:petroleum, palm oil, heavy oil products from crude oil, alcohol, emulsion (a mixture of waterand diesel fuel) and so on.

Application of diesel combustion systems can be found in the automotive world for heavytransport, tractors, bulldozers, power plants in the villages, emergency power generators athospitals, hotels etc.. But besides the advantage of being owned, diesel systems also havespecial problems associated with environmental pollution is smoke / fumes and exhaust gases, especially Nitrogen Oxide (NOx).
Both of these pollutant contradictory in appearance. Smoke / soot / smoke form when fuelsare unable mixed well with ogsigen so that incomplete combustion reaction, in this condition is not very high combustion temperatures (<1800 ° C) or Nitrogen Oxide NOxformed is not much.However, when mixing fuel and air going so well that complete combustion is achieved,then the high combustion temperatures (> 1800 ° C), this resulted in the occurrence of the reaction between N2 gas in the air with oxygen to form nitrogen oxide compounds, althoughthe production of smoke / soot / smoke will shrink.
To overcome the above dilemma, various studies have been conducted specifically to enable the reduction of smoke / soot / smoke and Nitrogen Oxide together.

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