M'makina oziziritsa magalimoto okhala ndi fani yamagetsi yamagetsi, fani imayatsidwa yokha ndikuzimitsa kutentha kwa kozizira kumasintha.Udindo waukulu pamakinawa umaseweredwa ndi fani yoyatsa sensa - mutha kuphunzira zonse za gawo ili m'nkhaniyi.
Kodi sensor yosinthira mafani ndi chiyani?
Sensa ya fan switch-on ndi chipangizo chamagetsi kapena chamagetsi chokhala ndi gulu lolumikizana (magulu) lomwe limatseka kapena kutsegula dera lamagetsi malinga ndi kutentha.Sensayi imaphatikizidwa mu gawo loperekera mphamvu kapena kuwongolera kwa fani yamagetsi yamagetsi oziziritsira injini, ndi chinthu chodziwika bwino chomwe chimapereka chizindikiro kuti muyatse kapena kuzimitsa fan kutengera kutentha kwa choziziritsa (kuzizira) .
Masensa awa amangogwiritsidwa ntchito m'magalimoto okhala ndi mafani oziziritsira ma radiator oyendetsedwa ndi magetsi.Mafani oyendetsedwa ndi injini ya crankshaft amayatsidwa ndikuzimitsidwa pogwiritsa ntchito makina owoneka bwino kapena njira zina zomwe sizikuganiziridwa pano.
Mitundu ya ma sensor switch-on
Masensa onse a fan amagawidwa m'magulu awiri malinga ndi mfundo ya ntchito:
• Electromechanical;
• Zamagetsi.
Komanso, masensa electromechanical amagawidwa m'magulu awiri:
• Ndi chinthu chodziwikiratu chozikidwa pamadzimadzi ogwirira ntchito okhala ndi kuchuluka kwakukulu kwa kukulitsa (sera);
• Ndi chinthu chozindikira chozikidwa pa mbale ya bimetallic.
Chifukwa cha kapangidwe kake, masensa a electromechanical amatha kulumikizidwa mwachindunji ndi gawo lamagetsi la fan (ngakhale nthawi zambiri sensa imaphatikizidwa mugawo la fan relay), ndipo masensa amagetsi amatha kulumikizidwa ndi gawo lowongolera ma fan drive.
Komanso, masensa a electromechanical amagawidwa m'mitundu iwiri malinga ndi kuchuluka kwa magulu olumikizana:
• Liwiro limodzi - khalani ndi gulu limodzi lolumikizana, lomwe limatseka mumtundu wina wa kutentha;
• Ma liwiro awiri - khalani ndi magulu awiri olumikizana omwe amatseka pa kutentha kosiyana, zomwe zimakulolani kuti musinthe liwiro la fan kutengera kutentha kwa ozizira.
Pamenepa, magulu olumikizana akhoza kukhala m'modzi mwa zigawo ziwiri: nthawi zambiri otseguka komanso otsekedwa.Choyamba, zimakupiza zimayatsa pamene ojambula atsekedwa, kachiwiri - akatsegula (mabwalo owonjezera angagwiritsidwe ntchito pano).
Pomaliza, masensa amasiyana ndi kutentha / kutseka kwa mafani.Pazida zapakhomo, nthawi ya 82-87, 87-92 ndi 94-99 ° C imaperekedwa, mu zipangizo zakunja kutentha kwapakati kumakhala pafupifupi m'malire omwewo, kusiyana ndi madigiri awiri kapena awiri.
Kupanga ndi mfundo yogwiritsira ntchito kachipangizo ka electromechanical ndi sera
Uwu ndiye mtundu wodziwika kwambiri wa masensa a fan.Maziko a sensa ndi chidebe wodzazidwa ndi mafuta sera (ceresite, tichipeza makamaka paraffins) ndi admixture ufa wamkuwa.Chidebe chokhala ndi sera chimatsekedwa ndi nembanemba yosinthika pomwe chopondera chili, cholumikizidwa ndi njira yoyendetsera cholumikizira chosunthika.Kuyendetsa galimoto kungakhale kwachindunji (pogwiritsa ntchito pusher yomweyo) kapena yosalunjika, pogwiritsa ntchito lever ndi kasupe (pamenepa, kutsekedwa kodalirika ndi kutsegula kwa dera kumatheka).Zigawo zonse zimatsekedwa muzitsulo zazitsulo zokhala ndi mipanda (izi zimapereka kutentha kofanana kwa madzi ogwira ntchito) ndi ulusi ndi cholumikizira magetsi.
Mfundo yogwiritsira ntchito sensa yotereyi imachokera ku zotsatira za kusintha kwa madzi amadzimadzi pamene kutentha kumasintha (amagwiritsidwanso ntchito muzitsulo zamagalimoto).Sera, yomwe imagwira ntchito yamadzimadzi yogwira ntchito mu sensa, imakhala ndi coefficient yayikulu yowonjezera kutentha, ikatenthedwa, imakula ndikuchotsedwa m'chidebecho.Sera yomwe ikukulirakulira imakhazikika motsutsana ndi nembanemba ndikupangitsa kuti iwuke - zomwe, zimasuntha chopondera ndikutseka zolumikizirana - fan imayatsa.Kutentha kumatsika, nembanemba imatsika ndipo zolumikizira zimatseguka - fan imazimitsa.
Masensa awiri-liwiro amagwiritsira ntchito, motero, ma nembanemba awiri ndi maulendo awiri osunthika, omwe amayambitsidwa pazigawo zosiyanasiyana za kutentha.
Sensa imayikidwa pa radiator yozizira (kudzera pa gasket yosindikiza), gawo lake logwira ntchito limalumikizana mwachindunji ndi choziziritsa kukhosi, pomwe madzi ogwirira ntchito amawotcha.Nthawi zambiri, galimoto imagwiritsa ntchito sensa imodzi ya fan, koma lero mutha kupezanso mayankho ndi masensa awiri a liwiro limodzi omwe amayikidwa kutentha kosiyana.
Mapangidwe ndi mfundo yogwiritsira ntchito sensa yokhala ndi mbale ya bimetallic
Pali mitundu yambiri ya masensa amtunduwu, koma kawirikawiri, mapangidwe awo ndi ophweka.Maziko a sensa ndi mbale ya bimetallic ya mawonekedwe amodzi kapena ena, pomwe kukhudzana kosunthika kuli.Pakhoza kukhalanso zigawo zothandizira mu sensa kuti mutseke odalirika kwambiri.Mbaleyi imayikidwa muzitsulo zosindikizidwa, zomwe zimapereka ulusi ndi cholumikizira chamagetsi kuti chigwirizane ndi makina oyendetsa mafani.
Mfundo ntchito kachipangizo zachokera chodabwitsa mapindikidwe wa bimetallic mbale pamene kutentha kusintha.Bimetallic mbale ndi mbale ziwiri zazitsulo zomwe zimagwirizanitsidwa ndi ma coefficients osiyana a kukula kwa kutentha.Kutentha kumakwera, zitsulo zimakula m'njira zosiyanasiyana, chifukwa chake, mbale ya bimetallic imapindika ndikusuntha kukhudzana kosunthika - dera limatseka (kapena limatsegula ndi zolumikizira zomwe zimatsekedwa), zimakupiza zimayamba kuzungulira.
Kulumikizana kwa sensor ndi kofanana ndi komwe tafotokozera pamwambapa.Zomverera zamtunduwu ndizochepa kwambiri chifukwa cha mtengo wawo wapamwamba komanso zovuta.
Kupanga ndi mfundo ya ntchito ya sensa yamagetsi
Mwamapangidwe, sensa iyi ndi yophweka kwambiri: imachokera pa chotenthetsera choyikidwa muzitsulo zazikulu zachitsulo ndi ulusi wopopera mu radiator ndi cholumikizira magetsi.
Mfundo yogwiritsira ntchito sensayi imachokera ku zotsatira za kusintha kukana kwa magetsi kwa thermistor pamene kutentha kumasintha.Kutengera ndi mtundu wa thermistor, kukana kwake kumatha kuchepa kapena kuwonjezereka ndi kutentha kowonjezereka.Kusintha kwa kukana kwa thermistor kumayang'aniridwa ndi dera lamagetsi, lomwe, pamene kutentha kwina kukufika, kumatumiza zizindikiro zowongolera kuti zitsegule, kusintha liwiro la kuzungulira kapena kuzimitsa fan.
Mwamapangidwe, sensa iyi ndi yophweka kwambiri: imachokera pa chotenthetsera choyikidwa muzitsulo zazikulu zachitsulo ndi ulusi wopopera mu radiator ndi cholumikizira magetsi.
Mfundo yogwiritsira ntchito sensayi imachokera ku zotsatira za kusintha kukana kwa magetsi kwa thermistor pamene kutentha kumasintha.Kutengera ndi mtundu wa thermistor, kukana kwake kumatha kuchepa kapena kuwonjezereka ndi kutentha kowonjezereka.Kusintha kwa kukana kwa thermistor kumayang'aniridwa ndi dera lamagetsi, lomwe, pamene kutentha kwina kukufika, kumatumiza zizindikiro zowongolera kuti zitsegule, kusintha liwiro la kuzungulira kapena kuzimitsa fan.
Nthawi yotumiza: Aug-24-2023