Kodi mumadziwa bwanji za Lambda Sensor?

Lambda sensor, yomwe imadziwikanso kuti oxygen sensor kapena λ-sensor, ndi mtundu wa dzina la sensor lomwe timatha kumva nthawi zambiri.Zitha kuwoneka kuchokera ku dzina kuti ntchito yake ikugwirizana ndi "oxygen content".Nthawi zambiri pamakhala masensa awiri a okosijeni, imodzi kuseri kwa chitoliro chotulutsa mpweya ndipo ina kumbuyo kwa chosinthira chanjira zitatu.Yoyamba imatchedwa sensa yakutsogolo ya okosijeni, ndipo yomalizayo imatchedwa sensor yakumbuyo ya oxygen.

Sensa ya okosijeni imazindikira ngati mafuta akuyaka nthawi zonse pozindikira zomwe zili mu dongosololi.Zotsatira zake zodziwikiratu zimapatsa ECU chidziwitso chofunikira pakuwongolera kuchuluka kwamafuta amafuta a injini.

Udindo wa sensa ya oxygen

Kuti mupeze kuchuluka kwa kuyeretsedwa kwa mpweya wotulutsa mpweya komanso kuchepetsa (CO) carbon monoxide, (HC) hydrocarbon ndi (NOx) nitrogen oxide oxide mu utsi, magalimoto a EFI ayenera kugwiritsa ntchito njira zitatu zothandizira.Koma kuti athe kugwiritsa ntchito bwino njira zitatu zosinthira mphamvu, chiŵerengero cha mpweya wa mafuta chiyenera kuyendetsedwa bwino kuti nthawi zonse chikhale pafupi ndi mtengo wamaganizo.Chosinthira chothandizira nthawi zambiri chimayikidwa pakati pa manifold otopetsa ndi muffler.The mpweya kachipangizo ali ndi khalidwe kuti linanena bungwe voteji ali ndi kusintha mwadzidzidzi pafupi ndi theoretical mpweya-mafuta chiŵerengero (14.7: 1).Izi zimagwiritsidwa ntchito pozindikira kuchuluka kwa okosijeni mu utsi ndikubwezeretsanso pakompyuta kuti ziwongolere kuchuluka kwamafuta a mpweya.Pamene chiŵerengero chenicheni cha mpweya-mafuta chikukhala chapamwamba, kuchuluka kwa mpweya mu mpweya wotulutsa mpweya kumawonjezeka ndipo kachipangizo ka oxygen kumadziwitsa ECU za chikhalidwe chowonda cha osakaniza (mphamvu yaing'ono ya electromotive: 0 volts).Pamene chiŵerengero cha mpweya-mafuta ndi otsika kuposa theoretical mpweya-mafuta chiŵerengero, ndende ya mpweya mu mpweya mpweya amachepetsa, ndi udindo wa kachipangizo mpweya amadziwitsidwa kompyuta (ECU).

ECU imaweruza ngati chiŵerengero cha mpweya wa mafuta ndi chochepa kapena chokwera kutengera kusiyana kwa mphamvu ya electromotive kuchokera ku sensa ya okosijeni, ndikuwongolera nthawi ya jekeseni wamafuta moyenerera.Komabe, ngati sensa ya okosijeni ili yolakwika ndipo mphamvu yotulutsa ma elekitirodi ndi yachilendo, kompyuta ya (ECU) siyingathe kuwongolera molondola kuchuluka kwamafuta a mpweya.Chifukwa chake, sensa ya okosijeni imathanso kubweza kulakwitsa kwa chiŵerengero chamafuta a mpweya chifukwa cha kuvala kwa mbali zina zamakina ojambulira makina ndi zamagetsi.Zinganenedwe kuti ndi "sensor" yokhayo mu dongosolo la EFI.

Ntchito ya sensa ndiyo kudziwa ngati mpweya wotuluka mu injini ikayaka moto, ndiye kuti, kuchuluka kwa okosijeni, ndi zomwe zili ndi mpweya zimasinthidwa kukhala chizindikiro chamagetsi pamakompyuta a injini, kuti injiniyo izindikire. chiwongolero chotsekedwa ndi chowonjezera mpweya monga chandamale.Chosinthira chothandizira chanjira zitatu chimakhala ndi kusinthika kwakukulu kwazinthu zitatu zowononga ma hydrocarbon (HC), mpweya wa carbon monoxide (CO) ndi ma nitrogen oxides (NOX) mu gasi wopopa, komanso kumakulitsa kutembenuka ndi kuyeretsa zowononga zotulutsa.

Kodi chimachitika ndi chiyani ngati sensa ya lambda ikulephera?

Kulephera kwa sensa ya okosijeni ndi mzere wake wogwirizanitsa sizidzangowonjezera mpweya wochuluka, komanso kusokoneza kayendedwe ka injini, zomwe zimapangitsa kuti galimotoyo iwonetsere zizindikiro monga zitsulo zotayirira, ntchito yolakwika ya injini, ndi madontho amphamvu.Ngati zolephera zikuchitika, ziyenera kukonzedwa ndikusinthidwa munthawi yake.

Front mpweya kachipangizo ntchito kusintha ndende ya mpweya wosakanikirana, ndi kachipangizo mpweya kumbuyo ndi kuwunika mmene ntchito njira zitatu chothandizira Converter.Zotsatira za kulephera kwa sensa ya okosijeni kutsogolo kwa galimoto ndikuti kusakaniza sikungakonzedwe, zomwe zidzachititsa kuti mafuta a galimoto achuluke komanso mphamvu ikugwetsa.

Ndiye kulephera kwa okosijeni kumatanthauza kuti machitidwe ogwiritsira ntchito njira zitatu za catalysis sangathe kuweruzidwa.Kamodzi katatu catalysis kulephera, sichitha kukonzedwanso nthawi, zomwe pamapeto pake zidzakhudza momwe injini ikugwirira ntchito.

Momwe mungasungire ndalama mu lambda sensor?

YASEN, monga opanga otsogola a sensa yamagalimoto ku China, takhala tikupereka chithandizo chaukadaulo komanso zinthu zapamwamba kwambiri ndi makasitomala.Ngati mukufunawholesale lambda sensor, mwalandiridwa kuti mutitumiziresales1@yasenparts.com.