【柴(chai)油(you)(you)機消(xiao)聲器(qi)】柴(chai)油(you)(you)機消(xiao)聲器(qi)有作用嗎 柴(chai)油(you)(you)機消(xiao)聲器(qi)原理(li)

柴油機消聲器原理

是利用多孔吸聲材料來降低噪聲。把吸聲材料固定在氣流通道的內壁上或按照一定方式在管道中排列，就(jiu)(jiu)構成(cheng)了阻(zu)(zu)性(xing)(xing)消音(yin)器(qi)(qi)(qi)。當(dang)聲波(bo)進入阻(zu)(zu)性(xing)(xing)消聲器(qi)(qi)(qi)時，一部分聲能在(zai)多孔(kong)(kong)材料的孔(kong)(kong)隙中摩擦(ca)而轉化成(cheng)熱能耗(hao)散掉，使(shi)通過消聲器(qi)(qi)(qi)的聲波(bo)減弱。阻(zu)(zu)性(xing)(xing)消音(yin)器(qi)(qi)(qi)器(qi)(qi)(qi)就(jiu)(jiu)好像(xiang)電(dian)學上的純電(dian)阻(zu)(zu)電(dian)路，吸聲材料類似(si)于電(dian)阻(zu)(zu)。因此，人們就(jiu)(jiu)把(ba)這(zhe)種消聲器(qi)(qi)(qi)稱為阻(zu)(zu)性(xing)(xing)消聲器(qi)(qi)(qi)。阻(zu)(zu)性(xing)(xing)消聲器(qi)(qi)(qi)對(dui)中高頻消聲效果(guo)奸、對(dui)低(di)頻消聲效果(guo)較差。

柴油機消聲器有作用嗎

消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)按(an)其(qi)工(gong)作原理可分(fen)為(wei)阻性(xing)(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)、抗(kang)性(xing)(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)和(he)阻抗(kang)復(fu)合消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)。阻性(xing)(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)主要是(shi)用(yong)(yong)吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材料(liao)(liao)來消(xiao)(xiao)(xiao)減噪聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，把吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材料(liao)(liao)固定在(zai)(zai)(zai)氣(qi)流(liu)流(liu)通的管(guan)道內壁或按(an)一定方式(shi)(shi)排列在(zai)(zai)(zai)管(guan)道中，當(dang)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波進入消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)時，大部分(fen)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)能(neng)被(bei)吸(xi)收，起到消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作用(yong)(yong)，阻性(xing)(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)的優點(dian)(dian)是(shi)能(neng)在(zai)(zai)(zai)較(jiao)(jiao)寬(kuan)(kuan)的中高(gao)頻(pin)(pin)范圍(wei)內消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)，特別(bie)對(dui)高(gao)頻(pin)(pin)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波有(you)(you)突出的消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作用(yong)(yong)。缺點(dian)(dian)是(shi)在(zai)(zai)(zai)高(gao)溫(wen)水蒸氣(qi)以(yi)及對(dui)吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材料(liao)(liao)有(you)(you)侵蝕(shi)作用(yong)(yong)的氣(qi)體(ti)中使用(yong)(yong)壽(shou)命較(jiao)(jiao)短。通常用(yong)(yong)于家庭、辦公室空調機(ji)(ji)；大型風洞(dong)，噴氣(qi)發動機(ji)(ji)試車間等(deng)處。抗(kang)性(xing)(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)又稱聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)學濾波器(qi)(qi)(qi)，它又分(fen)為(wei)共振式(shi)(shi)、擴(kuo)(kuo)張室式(shi)(shi)和(he)干(gan)涉式(shi)(shi)等(deng)幾(ji)種。最(zui)簡單(dan)的擴(kuo)(kuo)張室式(shi)(shi)是(shi)在(zai)(zai)(zai)氣(qi)流(liu)通道管(guan)上接一段截(jie)面較(jiao)(jiao)大的粗管(guan)，但其(qi)終端是(shi)細管(guan)，調節擴(kuo)(kuo)張室（大管(guan)）的截(jie)面扣長度以(yi)改變聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波的反射(she)和(he)干(gan)涉性(xing)(xing)(xing)能(neng)，從而(er)改變消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)量和(he)最(zui)大消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin)(pin)率。它與阻性(xing)(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)不同之處在(zai)(zai)(zai)于其(qi)中沒有(you)(you)放置吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材料(liao)(liao)，抗(kang)性(xing)(xing)(xing)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)的優點(dian)(dian)是(shi)結構(gou)簡單(dan)，耐高(gao)溫(wen)耐氣(qi)體(ti)侵蝕(shi)，有(you)(you)良(liang)好的低頻(pin)(pin)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)性(xing)(xing)(xing)能(neng)．缺點(dian)(dian)是(shi)消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin)(pin)帶窄，主要用(yong)(yong)于汽車發動機(ji)(ji)及其(qi)它活塞(sai)發動機(ji)(ji)的進氣(qi)和(he)排氣(qi)口。阻抗(kang)復(fu)合消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)綜合前兩種優點(dian)(dian)制成(cheng)。在(zai)(zai)(zai)其(qi)內部既有(you)(you)阻性(xing)(xing)(xing)吸(xi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)材料(liao)(liao)，又有(you)(you)共振腔，擴(kuo)(kuo)張室等(deng)抗(kang)性(xing)(xing)(xing)濾波元件，因(yin)此在(zai)(zai)(zai)較(jiao)(jiao)寬(kuan)(kuan)頻(pin)(pin)率范圍(wei)內有(you)(you)良(liang)好消(xiao)(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)效果。