Exhaust silencer design software

You must take into account your engine displacement, head size, cam timing, intake design, carb size, and other aspects of the engine package. General design principles for an automotive muffler australian. Jul 25, 2007 exhaust pipe design with cone layout software by paul crowe if you have ever tried to layout a conic section on sheet metal, cutting just the right piece, that when rolled over and joined on edge, you have a cone with the exact shape, size and angled openings desired, you know its not easy. The exhaust note is in the design, not the material.

Sidlab suite is a combination of software and hardware solutions for the analysis and measurement of sound generation and propagation inside duct networks. Billy boat summed up the muffler design process by saying, muffler design is fairly complex. Generator silencers and mufflers sound ratings, types and. Engine exhaust silencers choosing the correct exhaust silencer for a given engine is an important although not difficult task. Eforcar exhaust pipe muffler,2pcs motorcycle exhaust db killer muffler adjustable exhaust silencer 48mm. An improved method for design of expansionchamber mufflers with application to an operational helicopter by tony l. Established muffler design has been an iterative process by trial and.

Sound attenuator selection software and acoustical duct. Industrial silencers and fan silencers db noise reduction. The program produces a report that displays whether or not your design meets your required noise level within the critical space. Maso exhaust muffler silencer pipe universal 60mm motorcycle exhaust can mufflers pipe baffle db killer. We take every application and determine what is going to be the best configuration of muffler inside and what our latest technology is to develop the system. Exhaust silencers, silencers for noise reduction by penn. Reactive silencer design is based either on the principle of a. The basic converter is constructed of a honeycomb grid design that is placed in the exhaust system directly after the exhaust manifold.

Aug 16, 2015 you need the right plan, exhaust system design, and component selection. Flow considerations in industrial silencer design george feng, kinetics noise control, inc. Design and development of industrial generator silencer. Nachiketa tiwari,department of mechanical engineering,iit kanpur. Stuff some steel wool into the end of your muffler. Suppressor designers and manufacturers work hard to make suppressors easy, convenient, goodlooking, not harmful to actually increasing accuracy, and all this while significantly reducing noise. An effective silencer can then be manufactured accordingly. Using its mature versatile dynamic database of acoustic elements, you can compute all performance parameters relevant to acoustic performance, measurement and testing in industry and design all types practical mufflers, silencers and resonators for intake and exhaust systems. Engine exhaust considerations the exhaust system of a generator has several inherent design problems that must be considered. Exhaust optimization for viking motorsports formula sae team. First of all, a degree of silencing is chosen that will satisfy the noise requirements unique to each engine and location.

The muffler software aed 8001 acousticalc silencer is a powerful tool for the acoustic design of single elements and complex systems of silencers and. Top success stories 1st 2015 bsa bantam championship. Flexibility is the key to designing and developing any custom project, regardless of size and scope. The hole should only be big enough to slip a nail into. The further to the rear the silencer is fitted the less it will have an impact on the performance. Standard engine silencers exhaust flow rate cfm silencer inlet pipe area ft2 exhaust flow rate estimation if exhaust flow rate is unavailable, estimate through the following equation. Generator silencers and mufflers sound ratings, types. Muffler design types fall into three basic categories. Most auto repair stores and shops carry muffler silencers to fit many makes and models.

Industrial process silencers vent silencers mufflers. Inhouse cfd studies verify the silencer design, taking into consideration flow noise, pressure drop, and mechanical stability. Reactive silencers, which are commonly used in automotive applications, reflect the sound waves back towards the source and prevent sound from being transmitted along the pipe. Blade passing frequency is often the defining noise. We offer the highest quality acoustically optimised silen. This drawing shows a 3 chamber critical grade muffler. A performance exhaust system is a characterizing element for any internal combustion conveyance. This is the 6120 model with 20 inlet and 20 outlets.

Particulate matter content of the exhaust gas is also addressed in tier iv regulations. Like most of the high performance muffler companies, noward explains the software involved in muffler design. Improve the performance of your twostroke engine with a torqsoft designed exhaust system. The design software we run allows us to calculate optimum pipe size, silencer volumes and the internal layout of the silencer to produce the best results. There are several other terms in usage today, like turbo, bullet and multiple baffle. A high intensity pressure wave generated by combustion in the engine cylinder propagates along the exhaust pipe and. Dhe best short bottle empty free flow exhaust silencer. Particulate matter filters can be used to reduce the soot content of the exhaust. Webbased engine exhaust system design and sizing tool for design of power generation, gascompression, marine, industrial or offroad engineexhaust systems. By integrating them both to a single software environment, the user does not need to use. Calculation and design of exhaust noise mufflers for power. If pressure drop through the silencer is important to the application, efficient flow modifiers such as turning vanes or diffusers can be added upstream of the silencers. Discharge silencers for industrial fans are often required to accommodate very high volumetric flow rates cfm at high temperatures and velocities.

Click on the image below to open a sample exhaust design pdf file. The db noise reduction team is here to help you with innovative and effective solutions for noise control, including a full line of absorptive and reactive industrial silencers. Vanec vent and blowdown silencers are designed for use in suppressing the noise associated with venting highpressure gas or steam to atmospheric pressure. We use advanced computer software to model the acoustic properties of an existing or planned gas discharge system and predict the characteristics of the sound it will produce. You cannot simply select a random collection of exhaust parts and expect to realize top performance. So whether you have a 50cc road bike, a 500cc motocrosser or a classic racer. Parts club motorcycle exhaust muffler silencer fits for 140cc 150cc 160cc 125cc 38mm 1. In figure 14 and figure 15, the silencer downstream of a butterfly. Noise levels can be high and contain low frequency content.

If vehicles did not have a muffler there would be an unbearable amount of engine exhaust noise in our environment. Full range of exhaust silencer grades plus system piping accessories. To comply with government ordinances and protection of employees from excessive plant noise, pulsco vent silencers can be sized to handle a wide range of valve. The design and construction of a suppressor involves baffles welded inside of a tube. We shall send you a pdf document with the templates for manufacturing your exhaust. So whether you have a 50cc road bike, a 500cc motocrosser or a classic racer, we will design the perfect exhaust system for you. For the love of physics walter lewin may 16, 2011 duration. On receipt of your engine details, we will design an exhaust system and create a pdf document with all the templates required to fabricate your pipe as shown below.

A practical approach towards muffler design, development and. This location allows the exhaust gas to be at the maximum temperature needed for proper operation. Design principles for an automotive muffler 485 that the vibration of the exhaust system is not transferred to the chassis and then to the passenger cabin. Schalldampfersoftware, simulation schalldampfung, auslegung. Inerco uses fem finite element method software to design the silencers. Pd blower silencers to control intake and discharge noise on rotary and screw type pd blowers. Exhaust stack silencer design using finite element analysis. Pdf design and acoustic analysis of exhaust mufflers for. Acoustic and system backpressure calculations based on silencer grade selections and pipinglayout onscreen 3d workspace with split screen view allows modifications. You need the right plan, exhaust system design, and component selection.

These characteristics impose severe limitations on what can be done to silence the engine exhaust noise. With its unique modeling concepts and userfriendly windows environment, adem is a compact, easytouse, powerful software for engineers involved in modeling, computation, optimization, measurement and testing of mufflers, silencers and flow duct networks. Adem is powerful userfriendly software for modeling, calculation. Predicting the sound emission of a muffler design via simulation. Pdf design and development of industrial generator silencer. Internal and external areas, weights, number of internal and external stiffeners are provided as well as quantity of infill and perforated metal sheets. Many new silencers combine the converter design with the silencer. Torqsoft twostroke exhaust system designer programme. Ideal for fan inlet and exhaust silencers and duct silencers. Engineered to order eto products whether it is a 2 inch tube or a massive 40 foot tower exhaust silencer, gt exhaust s ability to engineer a custom solution is unparalleled by the industry. Calculation and design of exhaust noise mufflers for power engineering equipment igolkin a. From the outside looking in, a tube wrapped around another tube with some packing isnt the way the technology is anymore. Exhaust design our design department will design a product to your specification on size, noise and back pressure. A practical approach towards muffler design, development and prototype validation.

Nov 07, 2014 the project consists of redesigning ghaddar machinery co. This pdf document will then be emailed to yourself. Diesel engine generator sets in heavy industry plants and residentialofficial buildings can cause serious noise problems. Internal and external areas, weights, number of internal and external stiffeners are provided as.

Then the software will provide necessary bending instructions such as length, rotation, and angles, of the tubes with accurate exhaust tube bending and fabricating. Penn makes two models of exhaust silencers to reduce noise levels. Design rectangular and circular silencers for air movement applications. Dhe best short bottle chrome exhaust silencer glasswool chrome silencer exhaust features. Gt exhaust a2016100 series super critical grade industrial engine silencer. The sp silencer the sp exhaust silencer is a single pass silencer designed to give maximum attenuation of both low and high frequency noise for air, steam, or gas exhausting to atmosphere. Using its mature versatile dynamic database of acoustic elements, you can compute all performance parameters relevant to acoustic. The exhaust designer programme enables the user to design a twostroke exhaust system with ease, then with one click of the mouse, create a pdf document in any of the common paper sizes a4, a3, letter. This noise deadening device is especially one forming part of the exhaust system of an automotive vehicle. A muffler silencer in british english is a device for reducing the noise emitted by the exhaust of an internal combustion engine. Flow restriction from the silencer, if not a completely flowthrough design, contributes to total exhaust restriction and to back pressure which restricts the engine a bit. Sidlab software suite for muffler and silencer design navcon.

Defining the acoustic profile and influencing the powerband exhaust design is a more dynamic science than stringing together a few pipes and tacking on some mufflers. Industrial process silencers provided by systech attenuate noise from many types of industrial process equipment. But muffler requires specific design and construction considering various noise parameters produced by the engine. Webbased engine exhaust system design and sizing tool for design of power generation, gascompression, marine, industrial or offroad engine exhaust systems. The type and number of silencers fitted to the exhaust system will typically be dictated by law and personal preference for noise and tone. If your cars muffler is so loud its waking the neighbors and scaring small dogs, consider installing a muffler silencer. Lower exhaust noise from better silencer design techniques. Blade passing frequency is often the defining noise characteristic when designing an exhaust silencer. Page objectoftheinvestigation 1 theory 3 calculationofmuffleralonglines followedinpreceedingtheory 11 thetests 15 descriptionofapparatus 16 descriptionofliufilerstested 19.

Automotive noise, muffler design, hvac noise, muffler performance. Engineering 26 university of kentucky source engine pump compressor intake or exhaust area change expansion chamber helmholtz resonator quarterwave resonator termination we would like to predict the sound pressure level at the termination. Design of mufflers and silencers noise and vibration short course dept. For example my suzuki 100 gained 10kph more top speed when the silencer was removed. Does anyone know anything about exhaust silencer design. During the exhaust stroke there is a period of approximately 10 o where both the intake and exhaust valves are open, providing an opportunity to actively pull the reacted gases out of the. The silencer design and selection have an impact on performance, noise and the tone of the engine. Excessive exhaust restriction also adds to engine heat.

The muffler software aed 8001 acousticalc silencer is a powerful tool for the acoustic design of single elements and complex systems of silencers and mufflers by simulating the insertion loss and the transmission loss the working principle of the simulation software for silencers is based on the analytical description of the specific elements. Inerco uses fem finite element method software to design the silencers, studying the mechanical performance in order to avoid resonance and undesirable. Parrott langley research center summary an improved method for the design of expansionchamber mufflers is described and applied to the task of reducing exhaust noise generated by a helicopter. Attaching a muffler in the exhaust pipe is the most effective means of reducing noise. Silentor is a danish based company developing, producing and marketing exhaust silencer solutions principally for diesel and gas engines. A practical approach towards muffler design, development. Alfredson on the optimization of reactive type exhaust silencers in 1970. Exhaust optimization for viking motorsports formula sae. More than 45 years of research and development into silencing has created unique silencer principles. Exhaust silencers are a passive element of noise control, which inerco designs. With the help of ansys acoustics, a powerful finite element software, the acoustical performance of the exhaust silencer is optimised using acoustical filtering methods.

Journal of sound and vibration 1974 371, 1726 lower exhaust noise from better silencer design techniquest e. Ventx are specialists in the design, manufacture and installation of such industrial acoustic silencer systems. The first step in generator exhaust noise control design is to determine if a single muffler by itself can meet the project requirements. Years ago there was big gains possible from what the factory put out to the aftermarket. Welcome to silentor as silentor as full spectra silencers. Secondly, the silencer size is selected to accommodate the specified volume. Pdf exhaust stack silencer design using finite element. Wonnacott military vehicles and enghzeering establishment, chertsey, surrey, england received 19 april 1974 subject to the analytical and experimental work completed by drs p. At a given set of operating conditions, each vent silencer is designed to attenuate the noise level to the required level criteria at a given distance from the silencer.

Vanec offers models capable of supressing gas discharge noise to a community located as close as 400 ft from the vent or blowdown. Understanding muffler design and sound absorption strategies. Page objectoftheinvestigation 1 theory 3 calculationofmuffleralonglines followedinpreceedingtheory 11 thetests 15 descriptionofapparatus 16 descriptionofliufilerstested 19 datasheet 20 calculationofresults 21 resultsandconclusions 22 curves 25 figures 30. We design our exhaust systems to have stock or near stock levels of ground clearance, added noward. Engineered to order eto products whether it is a 2 inch tube or a massive 40 foot tower exhaust silencer, gt exhausts ability to engineer a custom solution is unparalleled by the industry. The size of your nail will determine the size drill bit to use.

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 automotive engineers sae. We also offer models that reduce noise to an acceptable level at 800 ft or 1600 ft from the source. Design and create exhaust tubes around axles, mufflers, gas tanks, and etc. That is why the reduction of exhaust noise from engines is, nowadays, an important issue. Acoustic and system backpressure calculations based on silencergrade selections and pipinglayout onscreen 3d workspace with split screen view allows modifications. The intent of the competition is to provide universities with an. Enhances overall looks of the vehicle and makes it more appealing. Silencer design, with an understanding of the application, equipment, and process, is critical when it comes to meeting specific noise attenuation requirements. The calculations also address the flow pressure drops that contribute to the overall performance of the system. Sidlab is a software and hardware solutions for the simulation and analysis of sound. The more steel wool you use, the quieter your muffler will sound. Drill a hole into the top of your muffler near the end. The project consists of redesigning ghaddar machinery co. Theres a lot of things going on in modern mufflers that helps achieve the sound and performance that we are looking for.