مجله علمی صوت و ارتعاش

مجله علمی صوت و ارتعاش

طراحی و ارائه نمونه صداخفه‌کن مناسب برای موتوراحتراق داخلی سنگین

نوع مقاله : مقاله پژوهشی

نویسندگان
مهدی نامی 1
مهدی پورسیفی 2
مصطفی میرطبائی 3
1 مهندسی مکانیک-دانشگاه تبریز-تبریز-ایران
2 استادیار دانشگاه افسری امام علی (ع)، تهران، ایران
3 رئیس دایره مهارت‌آموزی دانشگاه افسری امام علی (ع)، تهران، ایران
چکیده
هدف اصلی این مقاله، طراحی و ارائه یک صداخفه‌کن نوآورانه است که با شکستن فرکانس‌های صوتی ناشی از حرکت سیال در خروجی اگزوز خودروهای سنگین، صدای تولیدی را حداقل 50 دسی‌بل کاهش دهد. این کاهش صدا، به بهبود تمرکز و آرامش اپراتور در هنگام انجام مأموریت کمک می‌کند. در این مطالعه، پس از بررسی سه نوع صداخفه‌کن، صداخفه‌کن‌های جذبی به دلیل استفاده از مواد جاذب متخلخل برای جذب امواج صوتی عبوری انتخاب و تحلیل شدند. این صداخفه‌کن برای موتور OM457 شرکت صنعتی ایدم[i] طراحی شده است و توانایی کار در دمای اگزوز ورودی تا 520 درجه سانتی‌گراد و توان خروجی تا 315 کیلووات را دارد. این سیستم بهینه‌سازی شده است تا حداقل افت فشار 50 میلی بار را با فشار نسبی تخلیه 185 میلی بار و فشار نسبی ورودی 400 میلی بار تضمین کند. نوآوری این طراحی در کاهش موثر صدا با حفظ کارایی موتور و افت فشار حداقلی می‌باشد.
 
[i]  https://www.idem.ir/


 


 

 
 
کلیدواژه‌ها
صدا‌خفه‌کن
اگزوز
افت انتقال
موتور احتراق داخلی
لوله روزنه‌دار
موضوعات

عنوان مقاله English

Designing and presenting a silencer suitable for a heavy internal combustion engine

نویسندگان English

Mahdi Nami 1
Mahdi pourseifi 2
Mostafa mirtabaei 3
1 Mechanical Engineering - Tabriz University - Tabriz - Iran
2 Assistant Professor of Imam Ali Officer University (AS), Tehran, Iran
3 Head of Skill Training Department, Imam Ali Officer University (AS), Tehran, Iran
چکیده English

Sound is one of the forms of mechanical energy and the two main characteristics of sound are intensity or power and frequency or wavelength of sound.

their performance against the incoming sound wave, industrial silencers can be divided into two general groups of resonating and absorption silencers, the main difference between these silencers is the release of sound energy from the channeling system, which is one of the common examples of the use of resonating type silencers, their use in It is the internal combustion engines that distinguish absorption silencers from the resonator type based on the fact that the main and visible part of the act of muting the sound is achieved by changing sound energy to heat energy.

The goal of this article is to design a muffler based on the breaking of sound frequencies resulting from the movement of fluid in the exhaust output of vehicles, which leads to a reduction of at least 50 db of sound and gives the operator enough peace and concentration. In this article, after examining three types of mufflers, absorbent mufflers that use the properties of porous absorbent material to absorb passing sound and are the simplest form of mufflers, have been selected, analyzed and reviewed and are suitable for the OM457 engine of Idem Industrial Company. It designed for maximum inlet exhaust temperature is 520 and for the maximum kW power is 315 with the maximum discharge relative pressure of 185 mbar for homogenization with the standard atmosphere.

کلیدواژه‌ها English

silencer
design
acoustics
internal combustion engine
noise reduction
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