N55 engine - mafi muhimmanci bayanai game da inji

Sabuwar injin N55 ita ce injinin man fetur na farko na BMW mai tagwaye mai turbocharged tare da Valvetronics da allurar mai kai tsaye. Karanta game da fasahar BMW da takamaiman N55.

Injin N55 - menene tsarin naúrar?

Lokacin da aka kera na'urar injin mai na N55, an yanke shawarar yin amfani da camshafts sama da sama - buɗaɗɗe da ƙirar lamellar - tare da crankcase na aluminum wanda ke kusa da injin. An yi crankshaft da baƙin ƙarfe na simintin kuma shugaban silinda an yi shi da aluminum. Hakanan ƙirar ta haɗa da bawul ɗin ci tare da diamita na 32,0 mm. Bi da bi, an cika bawul ɗin sha da sodium.

N55 na amfani da injin turbocharger na tagwaye. An sanye shi da kusoshi daban-daban guda biyu waɗanda ke jagorantar iskar gas ɗin zuwa injin turbine. Kamar yadda aka ambata a baya, haɗin turbocharging tare da allurar mai kai tsaye da Valvetronic shima sabon abu ne ga N55.

Yadda tsarin Valvetronic ke aiki

Valvetronic na ɗaya daga cikin sabbin fasahohin da BMW ke amfani da shi. Wannan ɗaga bawul ɗin sha ne mara iyaka, kuma amfani da shi yana kawar da buƙatar shigar da ma'aunin nauyi.

Fasahar tana sarrafa yawan iskar da ake bayarwa don konewa ga sashin tuƙi. Haɗin tsarin uku (turbo, allurar mai kai tsaye da Valvetronic) yana haifar da ingantattun halaye na konewa da ingantaccen amsawar injin idan aka kwatanta da N54.

Bambance-bambancen na BMW N55 powertrain

Injin tushe shine N55B30M0, wanda ya fara samarwa a 2009.

1. Its ikon ne 306 hp. da 5-800 rpm;
2. karfin juyi shine 400 nm a 1-200 rpm.
3. An shigar da motar akan motocin BMW tare da ma'anar 35i.

Injin N55

Wani sabon sigar injin turbocharged shine N55. Rarraba yana gudana tun 2010, kuma sabon fasalin yana ba da 320 hp. da 5-800 rpm. da 6 Nm na karfin juyi a 000-450 rpm. Mai sana'anta yayi amfani da shi a cikin samfura tare da index 1i da 300i.

Zaɓuɓɓuka N55B30O0 da N55HP

An fara sayar da N55B30O0 a shekarar 2011. Wannan nau'in analog ne na N55, kuma sigogin fasaha sune kamar haka:

• karfin 326 hp da 5-800 rpm;
• 450 nm na karfin juyi a 1-300 rpm.

An shigar da injin akan samfura tare da fihirisar 35i.

Wani zaɓi, wanda ya fara samarwa a cikin 2011, shine N55HP. Yana da zaɓuɓɓuka masu zuwa:

• ikon 340 hp da 5-800 rpm. da 6 Nm na karfin juyi a 000-450 rpm. (mafi karfin 1Nm).

An yi amfani da shi a cikin BMW model tare da 35i index.

Hakanan ana samun naúrar a cikin nau'in wasanni (injin S55 tare da har zuwa 500 hp). Ya kamata a lura da cewa mafi iko version na M4 GTS amfani da ruwa allura.

Bambance-bambancen ƙira tsakanin BMW N54 da N55

Maganar N55, ba za a iya kasa ambaton wanda ya gabace ta ba, watau. naúrar N54. Akwai kamanceceniya da yawa tsakanin samfuran, kamar abubuwan da aka ambata a baya, ban da simintin ƙarfe na crankshaft, wanda ya fi nauyi kilogiram 3 fiye da wanda aka yi amfani da shi akan N54.

Bugu da kari, injin N55 yana amfani da turbocharger daya kacal, maimakon biyu kamar yadda yake a cikin N54B30. Bugu da kari, a cikin N54, kowanne daga cikin 3 cylinders yana da alhakin turbocharger daya. Bi da bi, a cikin N55, silinda ke da alhakin daya daga cikin tsutsotsi guda biyu masu sarrafa wannan sinadari. Godiya ga wannan, ƙirar turbocharger yana da haske da kusan kilogiram 4 idan aka kwatanta da tsohuwar sigar naúrar.

BMW engine aiki. Wadanne matsaloli ke tasowa lokacin amfani?

Yin amfani da sabon injin BMW N55 na iya haifar da wasu matsaloli. Ɗayan da aka fi sani shine ƙara yawan man fetur. Wannan yana faruwa da farko saboda bawul ɗin samun iska. Saboda haka, yana da daraja a kai a kai duba yanayin fasaha na wannan bangaren.

Wani lokaci kuma akan sami matsala wajen tada motar. Mafi sau da yawa sanadin konewar hanyoyin ɗagawa na hydraulic. Bayan duba yanayin fasaha na sashin, yi amfani da man inji mai inganci.

Me kuke buƙatar sani game da aikin naúrar?

Hakanan yakamata ku tuna canza allurar mai a kai a kai. Ya kamata su yi aiki kusan kilomita 80 ba tare da matsala ba. Idan an lura da lokacin maye gurbin, aikin su ba zai haifar da matsalolin da ke tattare da girgizar injin da ya wuce kima ba.

Abin takaici, N55 har yanzu yana da matsala mai ban haushi game da babban famfon mai.

Kun riga kun san ƙayyadaddun sigogin naúrar BMW guda ɗaya. Injin N55, duk da wasu kurakurai, ana iya bayyana shi a matsayin abin dogaro kuma mai dorewa. Kulawa na yau da kullun da kulawa da hankali ga saƙonni zai ba ku damar amfani da shi na dogon lokaci.

Hoto. babban: Michael Sheehan ta hanyar Flickr, CC BY 2.0