Audi 4.2 v8 engine - nkọwapụta powertrain

Injin 4.2 V8 nwere akụkụ ndụdụ 90°. Ihe ndị ọzọ pụrụ iche gụnyere oghere cylinder 90 mm na ebe agbụ oge dị n'akụkụ njigide. A na-ewere akụkụ 4.2 V8 dị ka ọ gbanwere naanị, n'ihi na ndị injinia nke ndị na-emepụta German jiri ahụmahụ bara ụba jikọtara ya na ọrụ na mmepụta nke ụdị engine gara aga.

4.2 V8 engine - data teknụzụ

Enyere ngalaba ike ahụ aha BVN. Mkpokọta nchụpụ bụ 4134 cm3 nwere ike nke 240 kW (360 hp), nke nwere 83 mm na strok piston nke 95,5 mm nwere oke mkpakọ nke 16,4: 1. Ọ dịkwa mma ịkọwapụta usoro ịgba egbe: 1-5-4-8-6-3-7-2. Ngụkọta arọ nke otu mbanye bụ 255 kg.

Moto ahụ na-eji sistemụ njikwa Bosch - ụdị EDC-16 CP +, yana sistemu okporo ụzọ nkịtị nwere nrụgide injection ruo 1600 mmanya na nozzles nwere oghere 8. Ejikwa igwe nju oyi iyuzucha mmiri agbakwunyere na sistemu ịsa ọcha nke nwere ihe abụọ oxidation catalysts yana nzacha mmanụ dizel na-enweghị mmezi (DPF). Mkpọpu ikuku dabara na ụkpụrụ Euro IV.

Chepụta ngwọta na mbanye

Ndị na-emepụta ihe na-ahọrọ ihe nkedo nke vermicular, nke kewara n'akụkụ axis nke crankshaft. Akụkụ nke ala na-eji etiti siri ike, nke bụ ụlọ nke isi ihe na-ebu. N'ihi ihe ngwọta ndị a, yana ihe ndị a na-eji eme ihe, ịdị arọ nke 4.2 V8 aghọwo ihe dị arọ dị ka kilogram 10 ma e jiri ya tụnyere ụdị 4.0 lita.

Ejiri ígwè 42 CR MO S4 kpụọ engine crankshaft na profaịlụ nke mere na mbụ na nke abụọ iji torques guzozie. Akụrụngwa a na-agbanye na 5 bearings. Ekwesiri iburu n'uche na radii mgbanwe nke crankpins agbakwunyere ọzọ iji mee ka ike nke crankshaft dịkwuo ike.

Nhazi nke moto na-emetụta omenala dị elu nke ọrụ

Otu n'ime mkpebi ndị dị mkpa n'akụkụ a bụ sistemu crank-piston nke na-adịghị emetụta ya nke ọma, nke mere na injin anaghị emepụta oke mkpọtụ. Na mgbakwunye, ịdị arọ agbakwunyere nke damper vibration torsional na efere mbanye na-enye nguzozi kachasị mma nke ngalaba ike. 

E nwekwara mmetụta dị elu nke injin 4.2 V8 site na ụzọ e si emepụta isi cylinder ahụ, gbaziri site na ụdị 3.0 L V6. Ọ nwere valvụ anọ n'otu cylinder, mpịachi camshafts, mmezi adịghị mma hydraulic, ogwe aka roller na spur lash correct sprockets.

N'ihi na eziokwu na-ebu okpu na-etolite a nkịtị etiti na a flat sealing elu, na ihe nke okpu bụ plastic, na fastening nke ọcha dị ike, magburu onwe acoustic mkpuchi nke akụkụ na-hụ na.

Usoro jụrụ oyi nke ọma

Ọ mejupụtara mgbapụta mmiri na thermostat, nke a na-etinye n'ime ụlọ a na-ahụkarị nke dị n'èzí ụgbọala ụgbọala. A na-eji yinye D na-ebugharị mgbapụta ahụ site na ogwe abụọ na gia na mgbapụta mmanụ.

Jaketị mmiri ahụ na-erute n'akpa ahụ site na ọdụ ụgbọ mmiri ịgba ntụtụ abụọ na-ebunye coolant n'akụkụ mpụta nke ngọngọ ụlọ ọrụ ọkụ. A na-atụba ndị na-anakọta mmiri n'akụkụ abụọ nke ihe a, nke ọ bụla n'ime ha nwere oghere anọ nke a na-enye ihe ahụ.

Ọ na-akwakọba n'ime ụlọ n'etiti ụlọ akụ cylinder ma na-asọba na radiator ma ọ bụ ozugbo na akụkụ mmiri nke mgbapụta mmiri, dabere na ntọala thermostat.

Sistemu mkpochapụ na-agbanwe site na DPF

4.2 V8 na-eme mgbanwe ma e jiri ya tụnyere nsụgharị ndị gara aga. Nke a na-ezo aka n'iji nkwado carborundum dị mkpa. N'ihi n'eziokwu na mgbidi mgbidi na-ebelata site na 37% ma e jiri ya tụnyere ụdị 3.0L V8, ebe dị irè nke ihe na-emepụta na-abawanye.

Nke a na-ebelata nrụgide azụ iyuzucha ma na-ebelata oge nzacha nzacha. Usoro a mekwara ka o kwe omume ịmegharị ihe mejupụtara ahụ ugbua na okpomọkụ nke 580-600 Celsius C ebe ị na-ejigide mgbagha ikuku gas dị ala.