The document presents an aqua silencer designed to replace commonly used vehicle exhaust silencers. It consists of a perforated tube surrounded by an activated charcoal layer and metallic mesh, housed inside an outer shell. Exhaust gases enter through the inlet and pass through the perforated tube, which converts high mass bubbles to low mass bubbles. The gases then pass through the charcoal layer for purification before exiting into a lime water solution. The aqua silencer significantly reduces harmful exhaust emissions and noise compared to conventional silencers through this multi-stage filtration and absorption process. It provides pollution control benefits while maintaining similar fuel efficiency to standard silencers.

1. “AQUA SILENCER”
PRESENTATION BY
B.NITHISH REDDY
E.JAGADEESH KUMAR
DEPARTMENT OF
MECHANICAL ENGINEERING
RSREC

2.  INTRODUCTION
 The aqua silencer is the design for replace commonly used
single unit silencers.
 It plays a major role in preventing air pollution which causes
harmful effect on human beings and environment.
 This system reduces the dangerous exhaust gases(co, Nox and
lead) coming from automobiles these emissions are controlled by
the charcoal layer and lime water.
 The smoke or emission gases and noise level in aqua silencer is
very very less than the commonly used silencers.

3.  CONSTRUCTION
 The main component of aqua silencer is perforated tube.
 It consists different diameter of holes to convert increase in mass bubble
to decreasing mass bubbles on perforated tube.
 Generally four sets of holes are drilled.
 The activated charcoal layer and metallic mesh covers are provided
around the perforated tube.

4.  PARTS OF AQUA SILENCER
 Perforated tube
 Non–return valve
 Outer shell
 Flange
 Charcoal layer

5.  Perforated Tube
 It consist no. of holes of various diameter mainly there are
four sets of holes.
It is used to convert the high mass of bubble to low mass
and very important activated charcoal layer is pasted on
it.

6.  NON-RETURN VALVE
 It is the most important part used to avoid the backflow of
exhaust gases and water.

7.  OUTER SHELL
 In outer shell the whole set up is kept inside it. It is mainly
made up of steel or iron. water outlet, inlet also the exhaust
tube was provide in the shell itself.

8.  FLANGE
 A flange is the connection of pipe where the connecting
pieces have flanges by which the parts are bolted together
flange is essential part it connect the silencer to engine.

9.  CHARCOAL LAYER
 This layer having high absorption capacity because it having
large surface area. This type of charcoal called activated
charcoal.

10. 4.0 WORKING OFAQUA SILENCERS
 The exhaust gases from engine enters from inlet to aqua silencer then
perforated tube convert high mass of bubble to the low mass of
bubbles.
 Then this gases passes through charcoal layer which again purify the
gases.
 When exhaust gases enter into lime water then carbon particles are
precipitated to down.
FIG 7 Cross-Sectional view of Aqua silencer in solid works

11. MERITS AND DEMERITS
 MERITS
 No vibration when the engine is running.
 Easy to start the engine.
 Emission and Noise is controlled at greater level
 DEMERITS
 Lime water filling is required once in a year.
 Silencer weight is more comparing to conventional silencers.
 Additional space is required.

12. 6.0 CONCLUSION
 An aqua silencer has more efficiency to reduce emission gases from
engine.
 In this system fuel consumption remain same as conventional silencers
because the use of perforated tube.
 Due to the use of water as a medium sound reduces this system
having pollution free emission and smokeless.
 This system is very cheap.
 This system is used for both two wheelers and four wheelers.
 It plays important role in industries.

13. THANKING YOU FOR GIVING THIS
WONDERFUL OPPORTUNITY