Ma injini amakono a jakisoni ndi dizilo amagwiritsa ntchito makina owongolera okhala ndi masensa ambiri omwe amawunika magawo ambiri.Pakati pa masensa, malo apadera amakhala ndi gawo la sensa, kapena camshaft position sensor.Werengani za ntchito, kapangidwe ndi kagwiritsidwe ka sensa iyi m'nkhaniyi.
Kodi gawo sensa ndi chiyani
Phase sensor (DF) kapena camshaft position sensor (DPRV) ndi sensa yamakina owongolera ma jakisoni amafuta ndi ma dizilo omwe amayang'anira momwe amagawira gasi.Mothandizidwa ndi DF, chiyambi cha kuzungulira kwa injini kumatsimikiziridwa ndi silinda yake yoyamba (pamene TDC ikufika) ndipo njira yopangira jekeseni imayendetsedwa.Sensa iyi imalumikizidwa bwino ndi crankshaft position sensor (DPKV) - makina oyendetsa injini zamagetsi amagwiritsa ntchito kuwerengera kwa masensa onsewa, ndipo, potengera izi, amapanga ma pulses a jekeseni wamafuta ndi kuyatsa mu silinda iliyonse.
Ma DF amagwiritsidwa ntchito pamainjini a petulo omwe ali ndi jakisoni wogawidwa pang'onopang'ono komanso pamitundu ina ya injini za dizilo.Ndipo ndi chifukwa cha sensa kuti mfundo ya jekeseni pang'onopang'ono ikugwiritsidwa ntchito mosavuta, ndiko kuti, jekeseni wamafuta ndi kuyatsa pa silinda iliyonse, malingana ndi momwe injini ikuyendera.Palibe chifukwa cha DF mu injini za carburetor, popeza kusakaniza kwamafuta-mpweya kumaperekedwa kwa masilindala kudzera pamtundu wamba, ndipo kuyatsa kumayendetsedwa ndi wogawira kapena sensa ya crankshaft.
DF imagwiritsidwanso ntchito pamainjini okhala ndi ma valve osintha nthawi.Pankhaniyi, masensa osiyana amagwiritsidwa ntchito kwa ma camshafts omwe amawongolera ma valve olowa ndi kutuluka, komanso machitidwe ovuta kwambiri olamulira ndi machitidwe awo ogwiritsira ntchito.
Mapangidwe a masensa a gawo
Pakadali pano, DF yotengera mphamvu ya Hall imagwiritsidwa ntchito - kuchitika kwa kusiyana komwe kungachitike mu chowotcha cha semiconductor chomwe chimayenda molunjika chikayikidwa mu mphamvu ya maginito.Masensa a Hall effect amakhazikitsidwa mosavuta.Zimakhazikitsidwa ndi chowotcha chozungulira kapena cha rectangular semiconductor, kumbali zinayi zomwe zolumikizira zimalumikizidwa - zolowera ziwiri, zoperekera mwachindunji, ndi ziwiri zotulutsa, pochotsa chizindikirocho.Kuti zikhale zosavuta, mapangidwewa amapangidwa ngati chip, chomwe chimayikidwa mu nyumba ya sensa pamodzi ndi maginito ndi mbali zina.
Pali mitundu iwiri yopangira ma phase sensors:
- Zochepa;
- Mapeto (ndodo).
Sensa yapakati
Sensa yomaliza
Sensa ya slotted gawo ili ndi mawonekedwe a U, mu gawo lake pali malo ofotokozera (chizindikiro) cha camshaft.Thupi la sensa limagawidwa m'magawo awiri, m'modzi muli maginito osatha, chachiwiri pali chinthu chodziwika bwino, m'mbali zonse ziwiri pali maginito amtundu wapadera, omwe amapereka kusintha kwa maginito panthawi yamagetsi. ndime ya benchmark.
Sensa yotsiriza ili ndi mawonekedwe a cylindrical, camshaft reference point imadutsa kutsogolo kwa mapeto ake.Mu sensa iyi, chinthu chomverera chili kumapeto, pamwamba pake pali maginito okhazikika ndi maginito.
Tiyenera kuzindikira apa kuti camshaft position sensor ndiyofunikira, ndiye kuti, imaphatikiza chinthu chodziwitsira chizindikiro chomwe chafotokozedwa pamwambapa ndi chosinthira chachiwiri chomwe chimakulitsa chizindikirocho ndikuchisintha kukhala mawonekedwe oyenera kukonzedwa ndi makina owongolera zamagetsi.Transducer nthawi zambiri imamangidwa mwachindunji mu sensa, yomwe imathandizira kwambiri kukhazikitsa ndikusintha dongosolo lonse.
Mfundo Yogwira Ntchito ya Phase Sensor
Sensa ya gawo imaphatikizidwa ndi master disc yoyikidwa pa camshaft.Chimbale ichi chili ndi malo ofotokozera a mapangidwe amodzi kapena ena, omwe amadutsa kutsogolo kwa sensa kapena kusiyana kwake panthawi ya injini.Podutsa kutsogolo kwa sensa, malo owonetserako amatseka mizere ya maginito yomwe imatulukamo, zomwe zimapangitsa kusintha kwa maginito kudutsa chinthu chovuta.Zotsatira zake, mphamvu yamagetsi imapangidwa mu sensa ya Hall, yomwe imakulitsidwa ndikusinthidwa ndi chosinthira, ndikudyetsedwa ku unit control control unit.
Kwa masensa otsekeka komanso omaliza, ma disc a masters amitundu yosiyanasiyana amagwiritsidwa ntchito.Kuphatikizidwa ndi masensa otsekeka, diski yokhala ndi mpweya wabwino imagwira ntchito - kugunda kwamphamvu kumapangidwa podutsa kusiyana uku.Kuphatikizidwa ndi sensa yomaliza, disk yokhala ndi mano kapena zizindikiro zazifupi zimagwira ntchito - mphamvu yolamulira imapangidwa pamene benchmark idutsa.
Sensa ya gawo imaphatikizidwa ndi master disc yoyikidwa pa camshaft.Chimbale ichi chili ndi malo ofotokozera a mapangidwe amodzi kapena ena, omwe amadutsa kutsogolo kwa sensa kapena kusiyana kwake panthawi ya injini.Podutsa kutsogolo kwa sensa, malo owonetserako amatseka mizere ya maginito yomwe imatulukamo, zomwe zimapangitsa kusintha kwa maginito kudutsa chinthu chovuta.Zotsatira zake, mphamvu yamagetsi imapangidwa mu sensa ya Hall, yomwe imakulitsidwa ndikusinthidwa ndi chosinthira, ndikudyetsedwa ku unit control control unit.
Kwa masensa otsekeka komanso omaliza, ma disc a masters amitundu yosiyanasiyana amagwiritsidwa ntchito.Kuphatikizidwa ndi masensa otsekeka, diski yokhala ndi mpweya wabwino imagwira ntchito - kugunda kwamphamvu kumapangidwa podutsa kusiyana uku.Kuphatikizidwa ndi sensa yomaliza, disk yokhala ndi mano kapena zizindikiro zazifupi zimagwira ntchito - mphamvu yolamulira imapangidwa pamene benchmark idutsa.
Nthawi yotumiza: Aug-24-2023