Wace abu ne ya zama sababinsa na fittura na intake manifold?

Karamin yadda ake samuwa da tsoro na yadda ake samuwa da tsoro na abubuwa a cikin karamin gaba na zamani

Yaya yadda ake samuwa da tsoro na yadda ake samuwa da tsoro na abubuwa a cikin karamin gaba na nylon-musamman

Masu karɓar kayan haɗin nailan suna magance wasu matsaloli masu tsanani na damuwa lokacin da injuna ke gudana. Canjin yanayin zafi daga kusan digiri 40 na Celsius a lokacin sanyi zuwa sama da digiri 150 a ƙarƙashin cikakken kaya yana haifar da matsaloli na gaske. Wadannan sassan filastik suna fadadawa da kuma raguwa kusan sau uku fiye da bangarorin injin na aluminum saboda yawan fadadawarsu na thermal ya fi girma - kimanin 80x10 ^ -6 a kowace Kelvin idan aka kwatanta da kawai 23x10 ^ -6 don aluminum. Bambanci yana haifar da damuwa a wuraren da abubuwa ke haɗuwa: wuraren hawa, haɗin haɗin, hanyoyin sanyaya, da kewayen kusoshi. A duk lokacin da injin ya yi zafin zafi da sanyaya, ƙananan fasa suna fara a cikin gilashin da aka ƙarfafa nailan 6/6. Bayan wani wuri tsakanin 5,000 zuwa 7,000 hawan keke, wanda ya fassara zuwa kimanin kilomita 50k zuwa 70k a kan hanya, waɗannan ƙananan fasa suna juya cikin ainihin fashewa. Gwaje-gwajen dakin gwaje-gwaje sun nuna cewa nailan ya rasa kusan kashi 40 cikin dari na ƙarfinsa bayan sa'o'i 1,200 na sake zagayowar zafi. Wannan ya bayyana dalilin da ya sa muke ganin yawancin gazawar farko a cikin motoci waɗanda ke sanya buƙatu masu yawa ga waɗannan abubuwan haɗin lokaci.

Tashin Kashe: Kammala na 3.8L da 4.2L V6 na Fuskanci (NHTSA, 2015–2022)

Ku duba raportin National Highway Traffic Safety Administration yana nuna cewa duka biyu na modelin injini V6 suka hada da karamin fayilin 15% daga 2015 zuwa 2022. Duk waɗannan injinin suka amfani da manifol din gurasa ta nylon composite wanda ba su ka raba su a matsayin saukin kariya don bayanin kariya. A cikin lokacin da aka fi yawa, kushe suka faru a cikin wani abu da ke ciki da sarrafa sosai a wani abu da ke cikin EGR valve mounts da kuma a wani abu da ke cikin manifol din da ke cikin cylinder head. Akwai karin 200 kasuwa da aka rubuta cewa coolant ya fito ne saboda kushe na manifol din. Kamar yadda aka sani, akwai 85% na wannan abu da aka faru ne lokacin da koyaushe suka samu daga 60,000 zuwa 90,000 miles a odometer, wanda ya zama daidai da abin da muna sani game da lokacin da glass reinforced nylon 6/6 zai iya kariya kafin ya kushe. Don sanin wannan abu, masu sayarwa na koyaushe sun fara bukatar rabi mai kyau a wadannan abubuwan da ke ciki da sarrafa. Wadannan canji suka taimaka wajen kuskure a cikin 70% bayan 2019 models suka faru. Wannan yana nuna cewa akwai abu da yawa wanda yana da muhimmanci amma kadara yana amince: lokacin da farkon bayanin kariya ba suka raba su a matsayin saukin kariya, suna zama abubuwa da yawa da suka faru a cikin koyaushe da yawa.

Kusurin Gasket na Intake Manifold: Bayanin Sababin Da Zaman Lafiya

Kusurin Kimiyya daga Coolant, Yawa na Zaki, da Bayanan Kafin Daka

A cikin bayanin da aka saba kuma tattaunawa na 2023, yanzu 42% na matsaloli na gasket na intake manifold suna daga wani tsari na kimiyar bayanai na abubuwa biyu. Lokacin da glycols na coolant su dace da materials na gasket na kamar rubber, suka faru su zama su yanka su ta hanyar hydrolysis. A sama lokacin da vapors na oil su haɗa da wadannan materials, suka haɗa su kuma su rufe shakara da karami su a lokacin da suka fiye. Wata matsala ta hanyar gas na combustion su kawo da piston rings. Wadannan gas su dace da parts na aluminum kuma su haɗa nitric acid, wanda ya ci da surfaces na metal kuma ya rage seals. Wannan ya zama mafi kyau lokacin da motor su yi amfani da fuels da ke ciki ethanol mai yawa saboda wadannan fuels suna ciki acid mai yawa kuma suna ciki volatility mai yawa. Don haka, dukkanin wadannan matsalolin kimiyar biyu suna yi amfani da kari da kari kuma su yanka karamin sealing a lokacin da ke fiye da kadan lokacin da mutane su fahimci, kadan lokacin da suke ciki 60,000 miles a odometer.

Rashin Inganci na Wuta: Rashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin

Tsarin zafin jiki yana haifar da ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙarancin ƙaran Wannan karkatarwa yana haifar da matsin lamba mara daidaituwa, yana hanzarta hanyoyin lalacewa guda uku masu alaƙa da juna:

• Rashin ƙarancin ƙarancin : Bolt danniya rage ta 25% bayan kawai 200 zafi hawan keke saboda sakawa shakatawa da thermal creep;
• Ƙarƙashin ƙuƙwalwar ƙuƙwalwa : Silicone-tushen da kuma nitrile roba seals sha m nakasawa karkashin ci gaba matsawa kaya;
• Ƙungiyar matsawa : Elastomers sun rasa har zuwa 40% na juriya bayan shekaru biyarko da ba tare da sake zagayowar thermalrage dawowa daga bugun jini.

Sakamakon ƙananan ƙananan ƙananan ƙananan ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin ƙwayoyin Don magance wannan, manyan OEMs yanzu suna ƙayyade gaskets na ƙarfe mai yawa (MLS) tare da murfin nickel ko PTFE mai ƙyama don mahimman abubuwan haɗin kai zuwa kai.

Matsalolin Ajiye da Kammalun Tattaunawa a Cikin Kafafin Intake

Idan aka sa akwai manifolddi na kwayoyin aiki da wayo, suna gaskiya da yawa kafin su ci gaba, amma idan mutane su biyo kuma yadda suka yi amfani da torque sequence, flatness na surface, ko kuma su faru da yawa da fasteners da suka tsoro. Bolts na mounting da ba su dawo da madaidaici ko su dawo sosai zasu iya yin flange area ya kara kari, wanda zai iya yin gasket ya kara kari da yawa kuma ya bai gas na exhaust da yawa su tashi cikin abubuwa masu kari a lokacin da suka ci gaba. Manifolddi na nylon composite suna kara kari da wannan matsala saboda abubuwan da suka yi su kara kari da yawa kamar metal idan suka ci gaba da aluminum ko iron cylinder heads. Vibration na engine ba ta taimaka ba, kuma ta iya yin wannan mounting spots su tashi da yawa, amma a cikin abubuwa masu kari kamar EGR valves. Wanda za a sani shi ne kara kari na vacuum leaks wanda mechanics suna iya fahimci su da matsaloli na MAF sensors ko oxygen sensors. Idan mutum ya sani cewa engine ya amfani da yawa da propane enrichment a karamar manifolddi idan ya ci gaba da yawa da cold, wannan shine irin alama ce cewa abubuwan da suka yi su kara kari da yawa kafin su ci gaba da kari.

Saba Daga Sabon Wannan

Wace abu ne ya zama sababinsan taka wani a cikin manifolds na kuma?

Taka wani a cikin manifolds na kuma yana daga sababin canzawa na hanyar yin amfanin gaba daya, wanda ya sa abubuwan da suka daga nylon su kama da kariya kamar yadda suka daga abubuwan da suka daga metal, wanda ya sa haɗa na karami.

Yaya yana ƙarfi neman manifolds na kuma?

Neman manifolds na kuma yana ƙarfi, saboda canzawa na kimika da karamin maki suka iya zama sababin karamin fadada, kuma suka iya rarraba nisba na hawayi da kuma suka iya zama sababin karamin kuma.

Shin kuskuren kuma yana iya fuskanci tsawon manifolds?

Ee, kuskuren kuma yana iya zama sababin karamin kuma da karamin fadada, wanda ya sa manifolds ya kara karamin kuma.