Kev nyeem ntawv siab Lambda txhais li cas?
Kev nyeem ntawv siab Lambda txhais li cas?

Video: Kev nyeem ntawv siab Lambda txhais li cas?

Video: Kev nyeem ntawv siab Lambda txhais li cas?
Video: Mam saib koj ua neej # 2. 10/14/2017 2024, Kaum ib hlis
Anonim

Cov lambda nyeem ntawv ntawm ib tug gas tester yog, rov hais dua, ib qho kev qhia ntawm huab cua rau roj piv, ib yam nkaus thiab siab a lambda nyeem ntawv cuam tshuam rau oxygen ntau dhau. Tsawg heev a nyeem ntawv cuam tshuam rau roj ntau dhau. Yog tias qhov voltage siab dua tshaj qhov no, piv txwv li 0.8 - 1.2 volts ces muaj yuav ua tus nplua nuj khiav los yog roj ntau dhau.

Kuj kom paub yog, dab tsi yog qhov zoo Lambda nyeem ntawv?

Yog tias qhov sib xyaw muaj cov pa oxygen ntau dhau rau cov roj (qhov sib tov sib xyaw), lambda yuav ntau dua 1.00. Yog tias qhov sib tov muaj cov pa oxygen tsawg dhau rau cov roj (cov khoom sib xyaw nplua nuj), lambda yuav tsawg dua 1.00.

Tsis tas li ntawd, tus nqi lambda txhais li cas? Cov lambda nqi yog siv rau thermal xam ntawm cov tsev thiab thermal Cheebtsam. Greek tsab ntawv λ, lambda , [W / mK] yog siv los sawv cev cov khoom siv hluav taws xob. Lub tshav kub conductivity ntawm ib yam khoom yog li nrov npe hu ua nws lambda nqi.

Yog li ntawd, kev nyeem ntawv Lambda yog dab tsi?

Lambda nyeem ntawv Nyob rau hauv lub emission test yog cov ntsiab lus ntawm cov pa oxygen tso pa tawm gas, yog lwm tus nyeem ntawv yog ok nws ib txwm ib lub qhov nyob rau hauv lub tso pa tawm tso cai rau huab cua los kos rau hauv (tej zaum tawg manifolds / cov pob qij txha tawg hauv lub system). Tuav lub revs nce siab dua pab tau tab sis qhov kev sim yuav tsum tau noj ntawm 2500 txog 3000rpm.

Dab tsi yog lambda hauv lub tsheb?

Cov lambda sensor, tseem hu ua oxygen sensor, yog ib qho me me sojntsuam nyob rau ntawm lub tsheb tso pa tawm, nruab nrab ntawm cov pa tawm manifold thiab lub catalytic converter. Nws tau tsim los ntawm Volvo hauv 70s. Yog koj muaj tus tshiab tsheb , nws yuav nruab nrog 2 lambda sensors.

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