Knock Inzwa. Umgomo we operation futhi yokuqinisekisa

izimoto Modern anemisila izinzwa ezihlukahlukene ngesisekelo ubufakazi bokuthi le control unit ilawula ukusebenza kwe-yonke iyunithi. Enye yalezi izakhi ezihilelekile ohlelweni uphethiloli umjovo, inzwa detonation, isimiso ogxile umphumela piezoelectric.

Knock inzwa esisogwini injini yemoto. Kungenisa voltage pulses kusukela detonation yokuqhuma e injini. Ngesisekelo ubufakazi ethole kulo, i-control unit elawula ukunikezelwa fuel, kanjalo nokufeza esiphezulu amandla injini kanye petrol kahle.

Nazi izinhlobo engqongqoza izinzwa

Kunezinhlobo ezimbili zama-device - broadband resonant. Kodwa manje inzwa resonance engqongqoza akuyona zifakwa njengoba standard. Kufanele bazi ukuthi akuzona nezilandiso, ngakho setha, isibonelo, esikhundleni broadband resonant ngeke zisebenze.

Umgomo we operation

ukusebenza Inzwa kusekelwe umphumela piezoelectric. Isilawuli kutshela inzwa kusuka DC voltage ka 5V. Kuyinto Resistor, okuyinto kunciphisa voltage ukuze 2.5V, futhi ubuyela kuNkulunkulu isignali isilawuli AC. reverse ukudluliswa isignali wenziwa ukuthola circuit inkomba voltage. Lokhu kungenzeka ngoba isilawuli ithola yengeza izitshengiselo ezivela kwamanye zinamandla DC, kube yibo - AC voltage. Lapho iqhume ku Isignali ye-inzwa injini detonation ekhiqizwa AC amplitude kanye nokuvama okuyinto encike ngqo kwi amandla detonation. Uma ngesikhathi operation evamile isilawuli motor ibuyisela i-AC isignali voltage 2.5V, isilawuli eshiya ukusebenza injini ikumodi zamanje. Uma ku Isignali ye-ewumphumela ukuphambuka yenani isikhundla, isilawuli eshintsha isikhathi ukuthungela, ukucima detonation nokudluliselwa ekusebenzeni injini e imodi ukonga futhi iphephile.

Ihlola engqongqoza inzwa

Ekhaya, inzwa oshaya futhi ukusebenza kwawo kungaba ihlolwe nge multimeter. Okokuqala, kufanele ixhumeke kumsindo isixhumi kagesi, bese uyasikrufulula ke kusukela injini. Ukuxhumanisa umhloli ukuze kwenziwe uphenyo ngale ndlela: obomvu (positive) wire ixhunyiwe koxhumene isixhumi, kanye black (negative) - ukuze izindlu. Ukuhlola kahle ezidingekayo kancane badonsa ngentambo, lapho inzwa engqongqoza kumele kukhiqize pulses afika ku-300 mV voltage, okuyinto kubhaliswe multimeter. Uma amandla yokwanda kwama ezingabhaliswanga ke inzwa ayilungile. Uma voltage multimeter Ubamba emva unhlangothi ngasinye, hlola isixhumi inzwa izintambo. Isikhathi esining impela kuba oxhumana ezimbi kungekho isilawuli zokuxhumana kanye inzwa, ngakho kufanele ukuhlanza oxhumana nabo. Godu hlola wiring i wesifunda evulekile. Kungenzeka ukuthi ikhebuli is frayed endaweni ethile nje noma imiswe.