Mavuto a Injector ya Mafuta ndi Kuthetsa Mavuto
Ma jakisoni a singano… M'mainjini amakono, jekeseni wa singano amagwiritsidwa ntchito makamaka mu injini zamafuta, makamaka mu GDI (jekeseni wolunjika wa gasi). Monga tafotokozera m'nkhani zam'mbuyomu, GDI imayatsa ma atomu ndikuyatsa mafuta mwachindunji muchipinda choyaka, pamwamba pa pisitoni. Chifukwa cha kasinthidwe ka pintal, ma depositi a kaboni amapanga pa pintal cone, zomwe zimasokoneza mawonekedwe opopera. Pamene kuchulukana kukuchulukirachulukira, kugawanika kosagwirizana kwa jeti kumapangitsa kuti pakhale kutentha kosafanana komwe kumatha kukhala kuphulika kapena kugwedezeka ... ndipo mwina kungapangitse malo otentha pa pisitoni kapena, zikavuta kwambiri, kusungunula dzenje la pisitoni. Tsoka ilo, vutoli limakonzedwa (mwina) pogwiritsa ntchito "kuyeretsa" mafuta owonjezera, kuthamangitsa makina a jakisoni ndi zida zapadera ndi yankho lokhazikika, kapena kuchotsa majekeseni kuti agwiritse ntchito kapena kusintha.
Ma jekeseni a Multihole ndi majekeseni akuluakulu omwe amagwiritsidwa ntchito mu injini za dizilo. Vuto lalikulu lomwe injini iliyonse yamakono ya dizilo ikukumana nayo masiku ano ndi khalidwe ndi ukhondo wa mafuta. Monga tanena kale, makina amakono a Common Rail amafikira kupsinjika mpaka 30,000 psi. Kuti mukwaniritse zovuta zotere, kulolerana kwamkati kumakhala kolimba kwambiri kuposa m'mitundu yam'mbuyomu ya nozzles (zololera zina zozungulira ndi ma microns 2). Popeza mafuta ndi mafuta okhawo a jekeseni choncho majekeseni, mafuta oyera amafunika. Ngakhale mutasintha zosefera panthawi yake, gawo lina la vuto ndilopereka mafuta ... pafupifupi matanki onse apansi panthaka ali ndi zonyansa (zonyansa, madzi kapena algae) zokhazikika pansi pa thanki. MUSAMAwonjezere mafuta mukaona galimoto yamafuta ikupereka mafuta (chifukwa kuthamanga kwamafuta omwe akubwera kumakhudza zomwe zili mu tanki) - vuto ndilakuti van ikanangochoka ndipo simunawone!!
Madzi mumafuta ndi vuto lalikulu chifukwa madzi amawonjezera kuwira kwa mafuta, koma makamaka amakhudza kwambiri mafuta amafuta omwe ndi ovuta kwambiri ... makamaka popeza sulfure yomwe inalipo monga mafuta anachotsedwa ndi lamulo la EPA. . Madzi mumafuta ndizomwe zimayambitsa kulephera kwa nsonga ya jekeseni. Ngati muli ndi matanki osungira pamwamba pa nthaka, condensate yomwe imapanga mkati mwa thanki pamwamba pa mzere wa mafuta (makamaka kutentha kwachangu) imapanga madontho ndikupita pansi pa thanki. Kusunga matanki osungira odzaza kumachepetsa vutoli… Kulumikizanso thanki yosungirako ndikoyenera ngati muli ndi mphamvu yokoka pansi pa thanki.
Mafuta onyansa kapena algae amakhalanso ndi vuto ndi machitidwe amakono apamwamba. Nthawi zambiri mumatha kudziwa ngati kuipitsidwa ndi vuto poyang'anira ... zithunzi zochepa zimamangiriridwa ku kalatayo.
Vuto lina limene timakumana nalo ku North America ndilo khalidwe lenileni kapena kuyaka kwa mafuta omwewo. Nambala ya cetane ndi muyeso wa izi. Mafuta a dizilo ali ndi zigawo zoposa 100 zomwe zimakhudza nambala ya cetane (yofanana ndi nambala ya octane ya mafuta).
Ku North America, chiwerengero chochepa cha cetane ndi 40 ... ku Ulaya, osachepera ndi 51. Ndizoipa kuposa momwe zimamvekera chifukwa ndi logarithmic scale. Chokhacho chomwe chingachitike ndikugwiritsa ntchito chowonjezera kuti musinthe nambala ya cetane komanso mafuta. Amapezeka mosavuta…ingokhala kutali ndi omwe amamwa mowa…ayenera kugwiritsidwa ntchito ngati njira yomaliza pomwe chingwe chamafuta chazizira kapena parafini ilipo. Mowa umawononga mafuta amafuta, zomwe zimapangitsa kuti pampu kapena majekeseni agwire.
