I-relay yezimoto iyisici esibalulekile kumasekethe ezimoto. Umsebenzi wayo oyinhloko ukulawula i-current enkulu nge-current encane, ukufeza ukushintshwa kwesifunda okuzenzakalelayo nokuvikelwa. Ikakhulukazi, lapho inani lokokufaka (elifana ne-voltage, yamanje, izinga lokushisa, njll.) lifinyelela umkhawulo osethiwe, isistimu kagesi yangaphakathi ye-relay ishayela abathintwayo ukuthi bavale noma bavule, ngaleyo ndlela ilawule isimo sokuvala/ukuvala sesekethe enkulu. Lesi sici siyivumela ukuthi yenze imisebenzi eminingi kumasistimu kagesi wezimoto:
Ukulawulwa Kwesekethe Nokushintsha: Ukudluliselwa kwezimoto kusetshenziswa kakhulu kumayunithi okulawula injini (ECUs), amasistimu okukhanyisa, amawipha amawindshi, ama-air conditioning, nezinye izimo. Isibonelo, lapho umshayeli evula imishayo ephakeme, i-relay ithola isignali kagesi ebuthakathaka esuka kuswishi, icupha ikhoyili yangaphakathi kazibuthe kagesi ukuze inikeze amandla, okubangela ukuthi abathintwayo bavale, ngaleyo ndlela ixhume isekethe yesibani bese ikhanyisa izibani. Lokhu "kulawulwa-kwesilinganiso esincane-kwesikali" sedizayini sigwema ukuphakama okuphezulu okudlula ngqo ekushintshani, kunwebe ubude bempilo bemishini.
Ukuhlukaniswa Kokulayishwa Kakhulu Nokuphepha: Esimeni lapho injini iqala noma iphutha lesifunda esifushane, i-relay ingavimbela ukulimala kwemishini ngokunqamula ngokushesha isekethe. Isibonelo, i-starter relay inqamula ngokuzenzakalelayo ngemva kokuba injini iqalile, ivimbela injini yokuqalisa ekushiseni ngokweqile ngenxa yokusebenza isikhathi eside. Okwamanje, ama-relay ahlukanisa{2}}amasekhethi e-voltage aphezulu kusukela kumasekhethi okulawula ama-voltage aphansi{3}, okuqinisekisa ukuphepha komsebenzisi.
Ukusebenza Okunengqondo Nokukhulisa Isignali: Izimoto zesimanje zisebenzisa amayunithi amaningi okulawula ama-elekthronikhi (ama-ECU), futhi ama-relay anika amandla{0}}ukulawula okunengqondo kwemibandela eminingi. Isibonelo, amasistimu e-airbag adinga ukutholwa kanyekanye kwezimpawu zenzwa yokushayisana namasignali esivinini semoto; ama-relay asebenzisa ingqondo ehlangene ukuze anqume ukuthi kufanele acuphe i-airbag, okuqinisekisa ukuthi idivayisi yokuvikela isebenza kuphela ngaphansi kwezimo ezithile.
Okuningi-Ukusatshalaliswa Kwezimpawu: Kumojuli Yokulawula Umzimba (BCM), ukudluliselwa okukodwa kungalawula imithwalo eminingi. Isibonelo, i-relay eyodwa ingaphatha kanyekanye izibani zokufunda zangaphakathi, izibani zeminyango, namalambu e-trunk, yenza ukwakheka kwezintambo kube lula nokunciphisa izinga lokuhluleka.
