Lub tsheb muffler ua haujlwm li cas, lub hauv paus ntsiab lus ntawm kev ua haujlwm yog dab tsi

Lub tsheb muffler yog tsim los txo cov suab nrov hauv lub tshuab tso pa tawm raws li cov qauv thoob ntiaj teb. Qhov no yog ib rooj plaub hlau, sab hauv ntawm cov partitions thiab chambers yog tsim, tsim raws nrog txoj kev nyuaj. Thaum cov pa pa tawm dhau los ntawm cov cuab yeej no, lub suab vibrations ntawm ntau zaus tau nqus thiab hloov mus rau hauv lub zog cua sov.

Lub hom phiaj tseem ceeb ntawm lub muffler nyob rau hauv lub tso pa system

Nyob rau hauv lub cav tso pa system, lub muffler yog ntsia tom qab lub catalytic converter (rau petrol tsheb) los yog cov particulate lim (rau diesel xyaw). Feem ntau, muaj ob yam:

• Preliminary (muffler-resonator) - tsim los ua kom muaj suab nrov thiab ua kom muaj kev hloov pauv hauv cov dej ntws tawm ntawm lub tshuab hluav taws xob. Nws yog ntsia ua ntej, uas yog vim li cas nws yog feem ntau hu ua "pem hauv ntej". Ib qho ntawm nws lub luag haujlwm tseem ceeb yog kev faib tawm cov pa pa hauv qhov system.
• Main Silencer - Tsim los txo cov suab nrov tshaj plaws.

Hauv kev xyaum, lub tsheb muffler ntaus ntawv muab cov kev hloov pauv hauv qab no los txo cov suab nrov nrov:

• Hloov qhov hla ntawm qhov tso pa tawm. Nws yog nqa tawm vim muaj nyob rau hauv kev tsim ntawm chav tsev ntawm cov seem sib txawv, uas tso cai rau koj los nqus cov suab nrov nrov. Lub hauv paus ntsiab lus ntawm thev naus laus zis yog qhov yooj yim: ua ntej, lub xov tooj ntawm tes ntawm cov pa roj tso tawm tau nqaim, uas ua rau qee lub suab tsis kam, thiab tom qab ntawd nthuav dav, vim tias lub suab tsis tawg.
• Exhaust redirection. Nws yog nqa tawm los ntawm partitions thiab hloov chaw ntawm lub axis ntawm cov hlab. Los ntawm tig cov pa tso pa tawm ntawm lub kaum sab xis ntawm 90 degrees lossis ntau dua, lub suab nrov nrov yog damped.
• Hloov cov roj oscillations (kev cuam tshuam ntawm lub suab nthwv dej). Qhov no yog ua tiav los ntawm lub xub ntiag ntawm perforations nyob rau hauv cov kav dej uas lub tso pa tawm. Cov tshuab no tso cai rau koj tshem tawm cov suab nrov ntawm ntau zaus.
• "Autoabsorption" ntawm lub suab nthwv dej hauv Helmholtz resonator.
• Absorption ntawm suab tsis. Ntxiv nrog rau cov chambers thiab perforations, lub cev muffler muaj cov khoom siv suab nrov kom cais cov suab nrov.

Hom mufflers thiab lawv cov qauv tsim

Muaj ob hom mufflers siv nyob rau hauv cov tsheb niaj hnub: resonant thiab ncaj-dhau. Ob leeg tuaj yeem ntsia tau ua ke nrog lub resonator (pre-muffler). Qee zaum, tus qauv tsim ncaj nraim tuaj yeem hloov lub muffler pem hauv ntej.

Kev tsim kho ntawm lub resonator

Structurely, lub muffler resonator, uas tseem hu ua nplaim taws ntes, yog ib lub raj perforated nyob rau hauv ib lub tsev kaw, muab faib ua ob peb chav. Nws muaj cov ntsiab lus hauv qab no:

• lub cev cylindrical;
• thermal rwb thaiv tsev txheej;
• qhov muag tsis pom kev;
• perforated yeeb nkab;
• lub tog raj kheej.

Resonant Silencer ntaus ntawv

Tsis zoo li qhov ua ntej, lub ntsiab resonant muffler yog qhov nyuaj dua. Nws muaj ob peb lub perforated kav ntsia tau rau hauv ib lub cev, sib cais los ntawm partitions thiab nyob rau ntawm txawv axes:

• perforated pem hauv ntej raj;
• perforated rear tube;
• inlet yeeb nkab;
• pem hauv ntej baffle;
• nruab nrab muab faib;
• rov qab baffle;
• cov yeeb nkab;
• oval cev.

Yog li, txhua yam kev hloov pauv ntawm lub suab tsis sib txawv yog siv nyob rau hauv lub resonant silencer.

Cov yam ntxwv ntawm ib tug ncaj muffler

Lub ntsiab qhov tsis zoo ntawm lub resonant muffler yog lub zog rov qab los ntawm kev hloov pauv ntawm cov pa tso pa tawm (thaum sib tsoo nrog baffles). Nyob rau hauv no hais txog, ntau tus neeg tsav tsheb nqa tawm tuning ntawm lub tso pa system los ntawm kev txhim kho ib tug ncaj muffler.

Structurally, ncaj muffler muaj cov nram qab no Cheebtsam:

• kaw vaj tsev;
• tso pa tawm thiab nqus cov yeeb nkab;
• trumpet nrog perforation;
• soundproofing khoom - feem ntau siv fiberglass yog resistant rau high kub thiab muaj zoo suab-absorbing zog.

Nyob rau hauv kev xyaum, ib tug ncaj-los ntawm Silencer ua hauj lwm raws li nram no: ib tug perforated yeeb nkab hla mus rau tag nrho cov chamber. Yog li, tsis muaj suab nrov los ntawm kev hloov cov kev taw qhia thiab hla ntu ntawm cov pa roj ntws, thiab cov suab nrov tsis ua tiav tsuas yog vim muaj kev cuam tshuam thiab kev nqus.

Vim tias qhov dej ntws tawm ntawm cov pa tso pa tawm los ntawm kev xa mus rau pem hauv ntej-flow muffler, qhov tshwm sim rov qab siab yog tsawg heev. Txawm li cas los xij, hauv kev xyaum, qhov no tsis tso cai kom muaj zog ntxiv (3% - 7%). Ntawm qhov tod tes, lub suab ntawm lub tsheb dhau los ua tus yam ntxwv ntawm lub tsheb kis las, txij li cov thev naus laus zis ua suab nrov tam sim no tsuas yog cuam tshuam cov zaus siab.

Kev nplij siab ntawm tus neeg tsav tsheb, cov neeg caij tsheb thiab cov neeg taug kev yog nyob ntawm kev ua haujlwm ntawm cov muffler. Yog li, thaum lub sijhawm ua haujlwm ntev, qhov nce ntawm lub suab nrov tuaj yeem ua rau muaj kev cuam tshuam loj heev. Txog rau tam sim no, kev teeb tsa ntawm lub tshuab hluav taws xob ncaj qha rau hauv kev tsim lub tsheb txav mus rau hauv cheeb tsam hauv nroog yog kev tswj hwm kev ua txhaum cai uas cuam tshuam nrog kev nplua thiab kev txiav txim kom rhuav tshem cov cuab yeej. Qhov no yog vim lub suab nrov dhau ntawm cov qauv tsim los ntawm cov qauv.