Pdf design and development for exhaust back pressure. I was scouring the internet, and was able to find a couple different ways to make your very own silencer. Design and development of automobile silencer for effective. First of all, a degree of silencing is chosen that will satisfy the noise requirements unique to each engine and location. The exhaust pipe is made of mild steel tubing on the cheaper bikes, stainless steel on the better ones. Page objectoftheinvestigation 1 theory 3 calculationofmuffleralonglines followedinpreceedingtheory 11 thetests 15 descriptionofapparatus 16 descriptionofliufilerstested 19 datasheet 20 calculationofresults 21 resultsandconclusions 22 curves 25 figures 30. Based on new muffler design parameters, a model is fabricated and tested. The remainder of this document first discusses the experimen. Best price silencer and exhaust you get here make you to stand out in the streets of chennai, bangalore, mumbai, kolkata, gurgaon, pune, ahmedabad. Modified exhaust is the prime most thing when a biker decided to modify a bike. Also if there are bikes without them, there will some mechanism that may silence the engine.
Design and thermal analysis of motor bike exhaust silencer. Lower exhaust noise from better silencer design techniques. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. How to turn a motorbike exhaust from a roar to a purr. Vent silencers 1 a vent silencer or a blow off silencer is a device used to. Inside silencer there are small tubes which cancels sounds and thereby sound is reduced that originate from engine. If vehicles did not have a muffler there would be an unbearable amount of engine exhaust noise in our environment. Exhaust mufflers are designed to reduce sound levels at these frequencies. Rout control box from handle bars along the stock wire harness. Silencer can also be termed as a muffler or resonator. There is steep increase in the number of two wheelers during the last few years.
Royal enfield classic, royal enfield standard, royal enfield thunderbird this concludes the list of 16 exhaust mods which you can use with your royal enfield motorcycle. The silencer is typically a hollow metal tube manufactured from steel, aluminum, or titanium and contains expansion chambers. Diy plans for a super simple diy silencer concerned. Have seen a lot of people asking for advice for mufflers silencers and primarily people wants to change from stock factory provided to custom to alter the exhaust note aka sound of the bike, some of them are also concerned about performance and engine life. Of above approaches computational approach will give results more close to practical values through simulation analyses. Simply measure from one end of the pipe until you reach ten inches, mark the spot with a pencil, and then cut the pipe accordingly. This report summarizes the initial experimental and computational investigation into suppressors for 22 and 38 caliber 9 mm guns. Design and fabrication of silencer waste heat power generation system 3 efficiency of the vehicles. A motorcycle exhaust system also known as muffler is made to route exhaust gases away from the engine.
In lab the silencer would be tested to give results required. The experimental effort tested a commercial suppressor as well as a cylindrical baffle design used to evaluate the computational code. All this are increasing exhaust pollution and particularly in metros as density of. The size of your nail will determine the size drill bit to use. Bikes have to throw out the exhaust gases out of the combustion chamber during the exhaust stroke and it has to travel through the silencer. Design of mufflers and silencers noise and vibration short course dept. The silencer is made of aluminized steel and consists of gas expansion chamber and designed. Pro caken universal mx dirt pit bike exhaust muffler silencer protector guard for crf motocross moto. The more steel wool you use, the quieter your muffler will sound. G resonators used as side branches attenuate sound in the main duct or pipe.
Drill a hole into the top of your muffler near the end. Free pdf reader software available here information on vent silencers. Remember that if you measure twice, youll only have to cut once. The automobile plays an important role in the transport system of india. Silencer accomplishes the muffling of this exhaust noise. Advanced twostroke tuned exhaust system the challenge the society of automotive engineers clean snowmobile challenge 2002 sae csc 2002 is an engineering design competition for college and university student members of the society of. Thereactive silencer proposedhere consists of5parallelrows ofresonatorcells, referred to as ba. As fuel burn inside the engine gases and fume are produced, so this gases and fumes need to be taken out from the engine. Study of design of existing silencer the silencer opted for the project is reactive type of silencer i. We are going to start the next part off by talking about silencer design basics, caliber ratings and submitting your batfe form 1. Design and thermal analysis of motor bike exhaust silencera. Pdf ijertdesign and thermal analysis of motor bike.
High performance silencer design using autodesk inventor pro 2009 3d models. The gas and noise enters the silencer through the single stage or multi stage diffuser where it is permitted to expand through many small holes into the. Stuff some steel wool into the end of your muffler. Your new performance exhaust shall be designed and your pdf document emailed to you within 48hrs after filling in the form below with your engine details and the payment of 50 euro via either paypal or credit card. The silencer muffler is engineered as an acoustic sound proofing device designed to reduce the. First, decide the host that your project will eventually live on and make sure its suitable to be suppressed. Flow considerations in industrial silencer design george feng, kinetics noise control, inc. A simple silencer can be made using soft drink bottle caps.
Second, take some time to do a little research on your own. Engineering 21 university of kentucky g the sidebranch resonator is analogous to the tuned dynamic absorber. Journal of research in science, technology, engineering. Wonnacott military vehicles and enghzeering establishment, chertsey, surrey, england received 19 april 1974 subject to the analytical and experimental work completed by drs p. So whether you have a 50cc road bike, a 500cc motocrosser or a classic racer, we will design the perfect exhaust system for you. Zip tie harnesses together leave loose in air box area. Sound is attenuated due to absorption conversion to heat sound absorbing material e. Rhomboid shaped resonators see figure 3 were used in the design because they have.
Diy plans for a super simple diy silencer 1 the maglite suppressor. Vent silencers controlling noise creating within a. The silencer is a product used in combination with a bike. A vent silencer or a blow off silencer is a device used to reduce unwanted noise created by gas or steam flow in a pipeline discharging directly into the atmosphere. Secondly, the silencer size is selected to accommodate the specified volume. Two typical reactive muffler designs are shown in figure 3.
The use of software like ansys for analysis has a following objectives. The fabrication of aqua silencer requires the following components to complete the operation of the silencer. Some cantype silencers socalled as they often resemble a beverage can may be detached by the user and attached to a different firearm. When we finally got our hands on our new indian scout, we knew shed look amazing.
Silencer or muffler can affect performance of a bike. If there are no silencer then there wont be silence. A racy silencer would set the tone for bike modification. Outlaw racing or2034 4stroke atv dirt bike exhaust silencer spark arrester muffler packing repack. The torque has increased thru the rpm range and thats what gets you thru. We have worked upon design of parts and drawing of aqua silencer. The machine height is suitable to and 28700c inch wheel diameter. This is one of the coolest ways to make a diy silencer. John borrowed jims copy of the two stoke tuners handbook and used it and tips from fast by gast to create one fast bike. Engine exhaust silencers choosing the correct exhaust silencer for a given engine is an important although not difficult task.
Journal of sound and vibration 1974 371, 1726 lower exhaust noise from better silencer design techniquest e. The pipe temperature varies a lot but at full throttle it can get up to a dullred heat, about 850c. In general, sound waves propagating along a pipe can be attenuated using either a. The silencers are of reactive absorptive type design. The acoustic attenuation and acoustic pressure levels of a singlecylinder diesel engine are computed using comsol multiphysics tool to evaluate the performance of the reactive muffler. The science and types of silencers mufflers for your. Ganesha b b department of mechanical engineering vvce mysuru, india mr. Muffler, exhaust gas, backpressure, noise pollution. Bharath m n department of mechanical engineering vvce mysuru, india abstract the hot gases which generate from combustion of fuel passes through the exhaust system of the automobile as they. In bangladesh we often use the term silencer to indicate the exhaust system. This list contains the best possible modes for performance improvements, sound alterations and exhausts for changing the visual appeal of your bike. Tubeless suppressors are those build in such way they dont have a tube. Design and fabrication of silencer waste heat power. A leader in our industry, we know youll be satisfied with your 2stroke silencers when you buy from us.
But you also dont want it to whisper so quietly you can barely hear it. It should be noted that teg technology can be incorporated with other technologies such as pv, turbocharger or even rankine bottoming cycle technique to maximize energy efficiency, reduce fuel consumption and green house gas ghg emissions. This device, typically cylindrical in shape, attaches to the muzzle of a pistol, submachine gun, or rifle. Better yet, ive also included a few videos to help give you a visual and make the building process simpler. You can cut the pipe using a handsaw, a hacksaw, a plastic pipe cutter, or a miter saw.
The hole should only be big enough to slip a nail into. Pdf cfd approach to firearms sound suppressor design. Static analysis of silencer design for the same repeated cycles. Click here to download or view this catalogue as an acrobat pdf file. Investigation of heat dissipation between dimple and normal. Studies thermal analysis for motorbike exhaust silencer for ensuring reduction in hot spots through design enhancement, ii ivjulysept. General design principles for an automotive muffler australian.
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