Aqua Silencer

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Diesel power invitably finds a very important role in the development of the plant?s economy and technical growth. Inspite of their high thermal efficiency, one cannot ignore the fact about the effect of their exhaust, in the atmosphere. It is a well-known fact that the toxic gases emitted in diesel engines are less than the engines. Due to high cost of petrol, diesel engines are more in use. Anticipating the use of diesel engines, even more in the near future; this system developed can be used to control the toxic gases, coming out of the diesel engines.

??????????? These toxic gases are harmful not only to the atmosphere, but also to the human & animal race. Objective of this project is to design & fabricate a simple system, where the toxic levels are controlled through chemical reaction to more agreeable level. This system acts itself as a silencer; there is no need to separate the silencer. The whole assembly is fitted in the exhaust pipe; it does not give rise to any complications in assembling it. This system is VERY COST EFFECTIVE AND MORE ECONOMICAL.


Diesel engines are playing a vital role in Road and sea transport, Agriculture, mining and many other industries. Considering the available fuel resources and the present technological development, Diesel fuel is evidently indispensable. In general, the consumption of fuel is an index for finding out the economic strength of any country. Inspite, we cannot ignore the harmful effects of the large mass of the burnt gases, which erodes the purity of our environment everyday.

?It is especially so, inmost developed countries like USA and EUOPE. While, constant research is going on to reduce the toxic content of diesel exhaust, the diesel power packs find the ever increasing applications and demand. This project is an attempt to reduce the toxic content of diesel exhaust, before it is emitted to the atmosphere. This system can be safely used for diesel power packs which could be used in inflammable atmospheres, such as refineries, chemicals processing industries, open cost mines and other confined areas, which demands the need for diesel power packs.


The high temperature high pollutant exhaust gas is allowed to pass through the belt ? mouth assembly of the scrubber in the first phase. The bell ? mouth at the inlet/outlet is approximately 2 ? times more in an area is that of the inlet. This allows the exhaust gas to expand considerably. This expansion allows the gas to cool, because the temperature is a function of pressure. This considerable reduction of backpressure allows for the additional involved due to the introduction of water and lime stone container. The venture effect of the bell ? mouth is minimized because the exhaust gas escapes out of the bell ? mouth randomly along the periphery.

After expansion, the emission comes in contact with oil; (which could be otherwise being any alkaline solution) where the obnoxious products of combustion are scrubbed when bubbled through it. The bell ? mouth also allows for more contact area with water, so that effective cooling takes place with in the short span of time available for the gas to pass through the oil. The length of bubbling can be increased by the oil level in the scrubber tank. But this will be increased result in an abnormal backpressure, which inadvertently affect the performance of the engine. And for this reason the bell ? mouth is a multipurpose component, to allow for reduction in back pressure, and provides for an increased contact area with the scrubbing agent.
After bubbling through the oil, it comes in contact with bubbles, which encourage turbulence of the exhaust gas with in and below the oil surface without unduly increasing the back pressure of the exhaust. This allows for the thorough scrubbing of the emission, so that more obnoxious product is absorbed in the allowed time. The baffles are of invaluable help to reduce the carry over of oil particles which are converted into steam, which otherwise will escape out of the system. The filter is used to filter the carbon particles in the exhaust gas.

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