I-Camshaft position sensor, imisebenzi yayo enjinini yangaphakathi yomlilo

Izinjini zesimanje zinomklamo oyinkimbinkimbi futhi zilawulwa yi-electronic control unit (ECU) ethola ulwazi kuzinzwa. Inzwa ngayinye iqapha amapharamitha athile abonisa ukusebenza kwenjini ngesikhathi samanje, futhi idlulisela ulwazi ku-ECU. Kulesi sihloko, sizobheka enye yezingxenye ezibaluleke kakhulu zesistimu yokuphatha injini - inzwa ye-camshaft position (DPRS).

Iyini inzwa yesikhundla se-camshaft

I-DPRV isho inzwa yendawo ye-camshaft. Amanye amagama: Inzwa yehholo, inzwa yesigaba noma i-CMP (isifinyezo sesiNgisi). Kusukela egameni kuyacaca ukuthi kuhileleke ekusebenzeni kwendlela yokusabalalisa igesi. Ngokunembayo, isistimu ibala umjovo kaphethiloli ofanele nesikhathi sokuthungela ngokusekelwe kudatha yayo.

Le nzwa isebenzisa i-voltage yereferensi yereferensi - 5V, futhi isici sayo senzwa iyinzwa yeHholo. Ayinqumi isikhathi sokujova noma ukuthungela, kodwa inikeza kuphela ulwazi mayelana nokuthi ipiston ifika nini ku-TDC kusilinda sokuqala. Ngokusekelwe kule datha, isikhathi somjovo nobude besikhathi kuyabalwa.

Emsebenzini wayo, i-DPRV ixhumeke ngokusebenza ku-crankshaft position sensor (DPKV), nayo enesibopho sokusebenza kahle kwesistimu yokuthungela. Uma ngesizathu esithile kwenzeka ukungasebenzi kahle kwenzwa ye-camshaft, ulwazi lwenzwa ye-crankshaft luzocatshangelwa. Isignali evela ku-DPKV ibaluleke kakhulu ekusebenzeni kwesistimu yokuthungela nokujova, ngaphandle kwayo, injini ngeke isebenze.

I-DPRV isetshenziswa kuzo zonke izinjini zesimanje, okuhlanganisa izinjini ezivuthayo zangaphakathi ezinezikhathi zevalvu eziguquguqukayo. Kuye ngomklamo wenjini, ifakwe ekhanda lesilinda.

Umphumela wehholo kanye nomklamo we-DPRV

Njengoba sekushiwo, inzwa isebenza kumphumela weHholo. Lo mphumela watholwa ngekhulu le-19 ngusosayensi wegama elifanayo. Waqaphela ukuthi uma i-current eqondile igeleza ngepuleti elincane futhi ibekwe endaweni yesenzo samagnet unomphela, khona-ke umehluko ongase ube khona udalwa kwezinye iziphetho zawo. Lokhu kusho ukuthi ngaphansi kwesenzo sokungeniswa kazibuthe, amanye ama-electron ayaphambuka bese enza i-voltage encane kwamanye amaphethelo epuleti (i-Hall voltage). Isetshenziswa njengesignali.

I-DPRV ihlelwe ngendlela efanayo, kodwa kuphela ngendlela ethuthukisiwe. Iqukethe uzibuthe unomphela kanye ne-semiconductor okuxhunywe kuyo izikhonkwane ezine. Isiginali inikezwa okokufaka kwesekethe ehlanganisiwe, lapho icutshungulwa khona bese inikezwa othintana nabo abaphumayo benzwa, etholakala kundlu yezinzwa. Umzimba ngokwawo wenziwe ngepulasitiki.

Indlela inzwa yokuma ye-camshaft esebenza ngayo

I-drive disk (isondo le-impulse) ifakwe ku-camshaft ukusuka ohlangothini oluphambene ne-DPRV. Ngakolunye uhlangothi, kukhona amazinyo akhethekile noma ama-protrusions kudiski ye-camshaft drive. Lapho lezi protrusions zidlula inzwa ye-DPRV, ikhiqiza isignali yedijithali yefomu elikhethekile, elibonisa ukushaywa kwamanje kumasilinda.

Kuyadingeka ukuthi ujwayelane nokusebenza kwenzwa ye-camshaft ngokunembile ngokuhlangana ne-DPKV. Ama-revolution amabili e-crankshaft ahambisana nokuphenduka okukodwa kwe-camshaft. Lena imfihlo yokuvumelanisa umjovo kanye nezinhlelo zokuthungela. Ngamanye amazwi, i-DPRV ne-DPKV zibonisa umzuzu wokushaywa unhlangothi kusilinda sokuqala.

I-crankshaft drive disc inamazinyo angama-58, ngakho-ke lapho udlula endaweni lapho amazinyo amabili engekho khona ngenzwa ye-crankshaft, uhlelo luhlola amasignali avela ku-DPRV ne-DPKV bese lunquma isikhathi sokujova kusilinda sokuqala. Ngemuva kwamazinyo angama-30, umjovo uvela, ngokwesibonelo, ku-cylinder yesithathu, bese kuthi owesine nowesibili. Lena yindlela ukuvumelanisa okusebenza ngayo. Wonke lawa masignali angama-pulses futhi afundwa wuphiko lokulawula injini. Zingabonwa kuphela ku-oscillogram.

Ukungasebenzi kahle kwenzwa

Kufanele kushiwo ngaso leso sikhathi ukuthi uma inzwa ye-camshaft ihluleka, injini izoqhubeka nokusebenza futhi iqale, kodwa ngokubambezeleka.

Ukungasebenzi kahle kwe-DPRV kungakhonjiswa yizimpawu ezilandelayo:

• ukwanda kokusetshenziswa kukaphethiloli ngenxa yokungavumelanisi kohlelo lomjovo;
• imoto iyagxumagxuma futhi ilahlekelwe umfutho;
• ukulahlekelwa okuphawulekayo kwamandla, imoto ayikwazi ukusheshisa;
• injini ayiqali ngokushesha, kodwa ngokubambezeleka kwemizuzwana engu-2-3 noma izitebele;
• uhlelo lokuthungela lusebenza ngamaphasi;
• ikhompuyutha esebhodini inikeza iphutha, ukukhanya kwe-Check Engine kuvuliwe.

Lezi zimpawu zingase zibonise ukuthi i-RPP ayisebenzi kahle, kodwa ingase ibonise ezinye izinkinga. Kuyadingeka ukwenza ukuxilonga enkonzweni.

Izizathu zokwehluleka kwe-DPRV:

• ukuxhumana kanye/noma ukuhluleka kwezintambo;
• kungase kube ne-chip noma ukugoba ekuphumeni kwediski ngamazinyo, ngenxa yokuthi inzwa ifunda idatha engalungile;
• ukulimala kwenzwa uqobo.

Inzwa ngokwayo ayivamile ukuhluleka.

Izindlela zokuxilonga inzwa

Njenganoma iyiphi enye inzwa yomphumela wehholo, inzwa yendawo ye-camshaft ayikwazi ukuhlolwa ngokulinganisa i-voltage kuwo wonke amaphini nge-multimeter. Isithombe esiphelele sokusebenza kwayo singatholakala kuphela ngokusihlola nge-oscilloscope. I-waveform izobonisa ama-pulses nama-dips. Udinga futhi nolwazi oluthile nolwazi lokufunda idatha ye-waveform. Lokhu kungenziwa nguchwepheshe onekhono esiteshini sesevisi noma esikhungweni senkonzo.

Uma kutholwa ukungasebenzi kahle, inzwa ithathelwa indawo entsha, ukulungiswa akunikeziwe.

I-DPRV idlala indima ebalulekile ohlelweni lokuthungela nokujova. Ukwehluleka kwayo kuholela ezinkingeni ekusebenzeni kwenjini. Lapho izimpawu zitholwa, kungcono ukuxilonga ngochwepheshe abaqeqeshiwe.