Kungakanani Okwaziyo Nge-Lambda Sensor?

Inzwa ye-Lambda, eyaziwa nangokuthi inzwa ye-oxygen noma i-λ-sensor, iwuhlobo lwegama lenzwa esingavamise ukulizwa.Kungabonakala egameni ukuthi umsebenzi wayo uhlobene "nokuqukethwe kwe-oxygen".Ngokuvamile kuba nezinzwa ezimbili ze-oxygen, eyodwa ngemuva kwepayipi le-exhaust kanye nenye ngemuva kwesiguquli se-catalytic yezindlela ezintathu.Eyokuqala ibizwa ngokuthi inzwa ye-oxygen yangaphambili, kanti lena yakamuva ibizwa ngokuthi inzwa ye-oxygen yangemuva.

Inzwa ye-oxygen inquma ukuthi ingabe uphethiloli uyavutha ngokujwayelekile ngokuthola okuqukethwe komoyampilo kushejuli.Imiphumela yayo yokuthola ihlinzeka i-ECU ngedatha ebalulekile yokulawula isilinganiso se-air-fuel yenjini.

Indima yenzwa ye-oxygen

Ukuze uthole izinga eliphezulu lokuhlanza igesi ephumayo kanye nokunciphisa (CO) i-carbon monoxide, (HC) i-hydrocarbon kanye (NOx) izingxenye ze-nitrogen oxide ekuphumeni, izimoto ze-EFI kufanele zisebenzise i-catalyst yezindlela ezintathu.Kodwa ukuze ukwazi ukusebenzisa isiguquli se-catalytic yezindlela ezintathu ngokuphumelelayo, isilinganiso se-air-fuel kufanele silawulwe ngokunembile ukuze sihlale siseduze nenani lethiyori.Isiguquli se-catalytic sivamise ukufakwa phakathi kwe-exhaust manifold kanye ne-muffler.Inzwa ye-oksijini inesici sokuthi i-voltage yayo yokuphuma inoshintsho olungazelelwe endaweni ye-theoretical air-fuel ratio (14.7:1).Lesi sici sisetshenziselwa ukuthola ukugcwala komoyampilo emshinini wokukhipha umoya futhi sifundle uwubuyisele kukhompuyutha ukuze ulawule isilinganiso sikaphethiloli womoya.Lapho isilinganiso sangempela sikaphethiloli womoya siba phezulu, ukugcwala komoyampilo kugesi yokukhipha umoya kuyanda futhi inzwa ye-oksijini yazisa i-ECU ngesimo esithambile sengxube (amandla amancane e-electromotive: 0 volts).Uma isilinganiso se-air-fuel siphansi kune-theory ye-air-fuel ratio, ukuhlushwa komoya-mpilo ku-exhaust gas kuncipha, futhi isimo senzwa ye-oxygen siyaziswa kukhompyutha (ECU).

I-ECU iyahlulela ukuthi isilinganiso se-air-fuel siphansi noma siphezulu ngokusekelwe kumehluko wamandla e-electromotive asuka kwinzwa yomoya-mpilo, futhi ilawula ubude besikhathi sokujova uphethiloli ngokufanele.Nokho, uma inzwa yomoya-mpilo inephutha futhi amandla e-electromotive okukhiphayo engajwayelekile, ikhompuyutha ye-(ECU) ayikwazi ukulawula ngokunembile isilinganiso samafutha omoya.Ngakho-ke, inzwa ye-oxygen ingaphinda ibuyisele iphutha lesilinganiso se-air-fuel elibangelwa ukuguga kwezinye izingxenye zesistimu yomjovo wemishini kanye ne-electronic.Kungashiwo ukuthi yiyona kuphela inzwa "ehlakaniphile" ohlelweni lwe-EFI.

Umsebenzi wenzwa ukunquma ukuthi ingabe i-oksijini ekukhishweni ngemva kokusha kwenjini yeqile, okungukuthi, okuqukethwe komoyampilo, kanye nokuqukethwe komoyampilo kuguqulwa kube isignali kagesi kukhompyutha yenjini, ukuze injini ikwazi ukubona. isilawuli seluphu evaliwe enesici somoya eseqile njengokuhlosiwe.Isiguquli se-catalytic sezindlela ezintathu sisebenza kahle kakhulu ekuguquleni ezintweni ezintathu ezingcolisa ama-hydrocarbon (HC), i-carbon monoxide (CO) nama-nitrogen oxides (NOX) kugesi yokukhipha umoya, futhi sandisa ukuguqulwa nokuhlanzwa kokungcola .

Kwenzekani uma inzwa ye-lambda ihluleka?

Ukuhluleka kwenzwa ye-oxygen kanye nomugqa wayo wokuxhuma ngeke nje kubangele ukukhishwa ngokweqile, kodwa futhi kuzolimaza izimo zokusebenza zenjini, okubangela ukuthi imoto ibonise izimpawu ezifana nezitebhisi ze-idling, ukusebenza kwenjini okungalungile, nokuwa kwamandla.Uma kwenzeka ukwehluleka, kufanele kulungiswe futhi kushintshwe ngesikhathi.

Inzwa ye-oxygen yangaphambili isetshenziselwa ukulungisa ukugxiliswa kwegesi exutshwe, futhi inzwa ye-oksijeni yangemuva iwukuqapha isimo sokusebenza sesiguquli se-catalytic yezindlela ezintathu.Umthelela wokuhluleka kwenzwa ye-oxygen ngaphambili emotweni wukuthi ingxube ayikwazi ukulungiswa, okuzokwenza ukuthi ukusetshenziswa kukaphethiloli kwemoto kunyuke namandla ehle.

Khona-ke ukwehluleka kwe-oksijeni kusho ukuthi izimo zokusebenza ze-catalysis yezindlela ezintathu azikwazi ukwahlulelwa.Uma i-catalysis yezindlela ezintathu ihluleka, ayikwazi ukushintshwa ngesikhathi, okuzogcina kuthinte izimo zokusebenza zenjini.

Ungatshala kuphi ku-lambda sensor?

I-YASEN, njengomkhiqizi ohamba phambili wezinzwa zezimoto e-China, besihlinzeka ngenkonzo yobungcweti nemikhiqizo yekhwalithi ephezulu namakhasimende.Uma ufunainzwa ye-lambda enkulu, wamukelekile ukuthintana nathi ngesales1@yasenparts.com.