Lub automotive tso pa system yog ib qho tseem ceeb los ua ke lub luag hauj lwm rau kev sau, thauj, thiab purifying pa pa gases generated thaum lub cav combustion. Nws cov haujlwm tseem ceeb suav nrog kev sib sau ua ke thiab tso tawm cov pa tawm, kev ua kom huv ntawm cov pa phem los ntawm kev hloov pauv catalytic, thiab txo suab nrov los ntawm muffler. Lub kaw lus feem ntau muaj xws li cov pa hluav taws xob, cov kav dej tso tawm, lub tshuab hluav taws xob catalytic, qhov cua kub sensor, lub muffler, thiab tailpipe.
Kev khiav dej num yog raws li hauv qab no: cov pa roj tawm ntawm lub cav li qub thiab dhau los ntawm cov pa hluav taws xob (rau kev sau thiab xa tawm), lub catalytic converter (rau kev lim dej), thiab cov muffler (rau cov suab nrov txo thiab dampening), ua ntej thaum kawg tau tawm mus rau hauv qhov chaw ntawm lub tailpipe.
Raws li qhov pib ntawm qhov system, lub tso pa tawm ntawm lub tog raj kheej txuas ncaj qha mus rau lub tog raj kheej lub cav thiab yog lub luag haujlwm rau kev sib sau cov pa tawm ntawm txhua lub tog raj kheej; ib qho sib npaug -ntev tsim pab kom sib npaug ntawm cov pa tawm tiv thaiv thoob lub tog raj kheej, yog li ua kom muaj txiaj ntsig zoo.
Lub catalytic converter yog lub hauv paus ntsiab lus ntawm kev tiv thaiv ib puag ncig. Feem ntau ntsia downstream ntawm lub tso pa manifold, nws nta ib tug sab hauv substrate coated nrog precious hlau (xws li platinum, rhodium, thiab palladium). Thaum qhov kub thiab txias, nws catalyzes redox cov tshuaj tiv thaiv uas hloov cov pa phem -tshwj xeeb carbon monoxide, hydrocarbons, thiab nitrogen oxides - mus rau cov pa roj carbon dioxide, dej, thiab nitrogen.
Lub muffler feem ntau yog nyob rau hauv nruab nrab los yog rear seem ntawm lub tso pa system. Nws sab hauv tsim muaj xws li ib tug series ntawm baffles, chambers, perforations, thiab kav; nws attenuates suab zog los ntawm kev siv lub hauv paus ntsiab lus ntawm kev puas tsuaj cuam tshuam (qhov twg muaj kev cuam tshuam lub suab nthwv dej ib leeg tawm), yog li txo cov suab nrov. Cov mufflers niaj hnub no muaj cov qauv tsim tshiab, xws li modular ceev - tso tawm cov qauv thiab cov tshuab ntse acoustic tuning, los txhim kho kev ua haujlwm zoo.
Lub ntsuas kub ntawm qhov ntsuas cua ntsuas qhov ntsuas pa tawm hauv lub sijhawm tiag tiag - thiab xa cov ntaub ntawv xa mus rau lub tsheb ECU. Qhov no ua kom lub catalytic converter ua haujlwm zoo nyob rau hauv qhov ntsuas kub zoo thaum tiv thaiv kev puas tsuaj los ntawm cov cua kub ntau dhau. Cov kav dej tso pa tawm yog lub luag haujlwm rau kev thauj cov pa tawm tsis tu ncua mus rau hauv qab purification thiab suab nrov - txo cov khoom; nws txoj kab uas hla thiab routing yog tsim los sib npaug cov pa ntws efficiency nrog lub tsheb tag nrho cov yuav tsum tau ntim. Raws li qhov kawg qhov hluav taws xob qhov hluav taws xob, lub tailpipe tsis tsuas yog tso pa tawm xwb tab sis feem ntau muaj cov qauv tsim uas ua kom lub tsheb zoo nkauj zoo nkauj.
