{"id":14458,"date":"2015-10-12T19:37:11","date_gmt":"2015-10-12T17:37:11","guid":{"rendered":"http:\/\/mixmotor.eu\/?p=14458"},"modified":"2015-10-12T19:37:11","modified_gmt":"2015-10-12T17:37:11","slug":"audi-a4-avant-pod-drobnohladom","status":"publish","type":"post","link":"https:\/\/mixmotor.eu\/de\/14458\/audi-a4-avant-pod-drobnohladom","title":{"rendered":"Audi A4 Avant pod drobnoh\u013eadom"},"content":{"rendered":"

Audi je jedna z ve\u013emi m\u00e1la zna\u010diek, ktor\u00e1 sa sna\u017e\u00ed svoj\u00edm priaznivcom-z\u00e1kazn\u00edkom uk\u00e1za\u0165, \u010do je pod plechmi a netla\u010d\u00ed iba na \u0161tandardn\u00e9 marketingov\u00e9 \u0165ahy.<\/p>\n

Aerodynamika. Nemyslite si, \u017ee sa to osob\u00e1kov net\u00fdka<\/h3>\n

Prirodzene je na aerodynamiku, teda na pr\u00e1cu s obtekaj\u00facim vzduchom kladen\u00fd d\u00f4raz hlavne v s\u00fa\u0165a\u017eiach, \u010di u\u017e s\u00fa to aut\u00e1 triedy GT, LMS, alebo DTM. No pr\u00e1ve v\u010faka s\u00fa\u0165a\u017eiam dok\u00e1zali v Audi na\u0161tudova\u0165 vplyv vzduchu pri obtekan\u00ed a mo\u017enosti jeho usmernenia a vyu\u017eitia.<\/p>\n

Audi A4 Avant m\u00e1 super n\u00edzky s\u00fa\u010dinite\u013e odporu vzduchu, ktor\u00fd n\u00e1jdete pod ozna\u010den\u00edm cw<\/sub>, iba 0,26 (bezjednotkov\u00e9 \u010d\u00edslo). Je potrebn\u00e9 vedie\u0165, \u017ee \u010d\u00edm ni\u017e\u0161ie \u010d\u00edslo, t\u00fdm men\u0161\u00ed odpor je kladen\u00fd vzduchu. SUV-\u010dka maj\u00fa odpor okolo 0,5. Formulu nejdeme rozobera\u0165, to je samostatn\u00e1 jednotka. Aut\u00e1, ktor\u00e9 pre\u0161li aerodynamick\u00fdm tunelom maj\u00fa cw pribli\u017ene 0,3. Mercedes-Benz prelomil t\u00fato bari\u00e9ru pr\u00e1ve s gu\u013ekou triedy B, s ktorou dosiahli hodnotu 0,25. \u010cere\u0161ni\u010dkou na torte je Tatra T77A s cw=0,212.<\/p>\n

\"large_Upside-Down_Audi-A4-Avant_Unterboden_21_9\"<\/a><\/p>\n

Probl\u00e9mom je, \u017ee auto nem\u00f4\u017ee ma\u0165 st\u00e1le ni\u017e\u0161\u00ed a ni\u017e\u0161\u00ed odpor vzduchu, preto\u017ee by nemuselo by\u0165 v r\u00fdchlostiach nad 110km\/h ovl\u00e1date\u013en\u00e9. Vzduch toti\u017eto auto aj pritl\u00e1\u010da na cestu. No takisto nem\u00f4\u017ee by\u0165 tento odpor ani privysok\u00fd, preto\u017ee osobn\u00e9 auto by malo spotrebu n\u00e1kladn\u00e9ho auta.<\/p>\n

Ako sa s t\u00fdm teda vysporiadali v Audi? Ka\u017ed\u00fd poriadny tuner vie, \u017ee vzduch prech\u00e1dzaj\u00faci popod auto je obrovsk\u00fdm probl\u00e9mom. Tak\u00e9 R8 LMS ultra GT3 je odspodu zakryt\u00e9 jednou ve\u013ekou plat\u0148ou, len aby sa vzduch r\u00fdchlo popod auto “pre\u0161mykol” a o ni\u010d nenar\u00e1\u017eal a nebrzdil. A4 Avant 2015 dostalo do vienka aero-podvozok. Motorov\u00fd priestor je kompletne uzavret\u00fd, kab\u00edna je prekryt\u00e1 plastovou plat\u0148ou, minispojler pred kolesom a spojler pred n\u00e1dr\u017eou zase riadene ved\u00fa vzduchu. Koniec koncov, pozrite si obr\u00e1zky, ak\u00e9 boli s\u00e9riov\u00e9 aut\u00e1 a ak\u00e9 s\u00fa\u0165a\u017en\u00e9 a ich kr\u00ed\u017een\u00edm sme dostali nov\u00fd A4 Avant 2015.<\/p>\n

Audi A4 Avant
\n2015<\/h4>\n

\"large_Upside-Down_Audi-A4-Avant_Seitenansicht_21_9\"<\/a> \"teaser_Upside-Down_Audi-A4-Avant_Unterboden_4_3\"<\/a><\/p>\n

    \n
  1. Pred-spojler kolesov\u00e9ho priestoru (podblatn\u00edk)<\/li>\n
  2. Spojler kolesa<\/li>\n
  3. Riadenie a ty\u010d riadenia prednej n\u00e1pravy<\/li>\n
  4. Tlmiaca va\u0148a<\/li>\n
  5. Katalyz\u00e1tor<\/li>\n
  6. Spojler telev\u00edzneho plechu (pardon, ale netu\u0161\u00edm o \u010do sa jedn\u00e1. Toto je doslovn\u00fd preklad)<\/li>\n
  7. Spojler tunelovej v\u00fdstu\u017ee<\/li>\n
  8. Spojler zadn\u00e9ho kolesa<\/li>\n
  9. Spojler n\u00e1dr\u017ee<\/li>\n
  10. Riadenie a hnacia ty\u010d zadnej n\u00e1pravy<\/li>\n
  11. Diferenci\u00e1l zadnej n\u00e1pravy<\/li>\n
  12. Kryt pru\u017e\u00edn<\/li>\n
  13. Kryt koryta rezervn\u00e9ho kolesa<\/li>\n
  14. Kryt SCR n\u00e1dr\u017ee<\/li>\n
  15. Spojler koryta rezervn\u00e9ho kolesa<\/li>\n<\/ol>\n

    Audi 80
    \n1972<\/h4>\n

    \"large_Upside-Down_Audi-80_Seitenansicht_21_9\"<\/a> \"teaser_Upside-Down_Audi-80_Unterboden_21_9\"<\/a><\/p>\n

    Audi R8
    \n2015<\/h4>\n

    \"large_Upside-Down_Audi-R8_Seitenansicht_21_9\"<\/a> \"large_Upside-Down_Audi-R8_Unterboden_21_9\"<\/a><\/p>\n

    Audi quattro
    \n1980<\/h4>\n

    \"large_Upside-Down_Audi-quattro_Seitenansicht_21_9\"<\/a> \"large_Upside-Down_Audi-quattro_Unterboden_21_9\"<\/a><\/p>\n

    Audi Rallye quattro A2
    \n1984<\/h4>\n

    \"large_Upside-Down_Audi-Rallye-quattro-A2_Seitenansicht_21_9\"<\/a> \"large_Upside-Down_Audi-Rallye-quattro-A2_Unterboden_21_9\"<\/a><\/p>\n

    Audi R15 TDI
    \n2009<\/h4>\n

    \"large_Upside-Down_Audi-R15-TDI_Seitenansicht_21_9\"<\/a>\"large_Upside-Down_Audi-R15-TDI_Unterboden_21_9\"<\/a><\/p>\n

    Aby sme ale neutekali od hlavn\u00e9ho hrdinu \u010dl\u00e1nku, tak A4 Avant dosahuje ni\u017e\u0161iu hlukov\u00fa hladinu upraven\u00fdm obtekan\u00edm vzduchu. \u017dal\u00fazie (alebo klapky, nazvite to ako chcete) na prednej mrie\u017eke chladi\u010da s\u00fa prednostne zavret\u00e9 a vzduch sa po nich k\u013a\u017ee na predn\u00fa kapotu a \u010falej. Ak sa chladiaca kvapalina zohreje nad pr\u00edpustn\u00fa teplotu, otvor\u00ed sa spodn\u00e1 \u010das\u0165 lamiel (\u017eal\u00fazii, klapiek, …) a umo\u017en\u00ed tak prietok vzduchu priamo do chladi\u010da. Ak ani to nesta\u010d\u00ed na odovzdanie tepla od chladiacej kvapaliny, otvor\u00ed sa aj horn\u00e1 \u010das\u0165 lamiel.
    \nSpojlery kolesov\u00e9ho priestoru rozde\u013euj\u00fa vzduch tak, aby \u010das\u0165 obtekala koles\u00e1 a \u010das\u0165 vy\u0161la na karos\u00e9riu a po nej odtiekla pre\u010d. Sp\u00e4tn\u00e9 zrkadl\u00e1 maj\u00fa jemn\u00e9 dr\u00e1\u017eky pre zn\u00ed\u017eenie aeroakustiky, teda hluku.<\/p>\n

    \"Audi<\/a> \"Audi-A4-Aerodynamic_21_9\"<\/a><\/p>\n

    A e\u0161te aby som nezav\u00e1dzal z\u00e1ujemcov a priaznivcov. Audi A4-Limusine (sedan) m\u00e1 e\u0161te ni\u017e\u0161\u00ed s\u00fa\u010dinite\u013e odporu vzduchu, cw=0,23.<\/p>\n

    Karos\u00e9ria. Hlin\u00edk se odstehoval do Audi<\/h3>\n

    Aj napriek v\u00e4\u010d\u0161\u00edm rozmerom v\u00e1\u017eia A4 a A4 Avant menej kilogramov, ako ich predchodcovia. \u00dadajne a\u017e 120kg menej celkovo. Z\u00e1kladn\u00fd Avant 1.4 TFSI m\u00e1 na v\u00e1he len 1.370kg (bez vodi\u010da, polovodi\u010da a nevodi\u010da). Karos\u00e9ria stratila 15kg skrz inteligentn\u00e9 vyu\u017eitie zmie\u0161ania plastov a \u013eahkej kon\u0161trukcie.<\/p>\n

    \"Audi<\/a> \"teaser_01-A4-Avant-Rohbau-Explo_4_3\"<\/a><\/p>\n

    Nosn\u00e1 prie\u010dna kon\u0161trukcia \u0161asi pred pr\u00edstrojovou doskou je z lisovan\u00fdch profilov z hlin\u00edkovej zliatiny a plechov (modr\u00e1 a \u010derven\u00e1 farba). Predn\u00e1 prie\u010dna kon\u0161trukcia je obdobne z lisovan\u00fdch hlin\u00edkov\u00fdch profilov. Z hlin\u00edka je aj zadn\u00e1 \u010das\u0165 kufra (zelen\u00e1 farba). Vlastne u Audi by sme sk\u00f4r mohli porozm\u00fd\u0161\u013ea\u0165, \u010do nie je z hlin\u00edkov\u00fdch zliatin, preto\u017ee Audi je na hlin\u00edk \u0161pecialistom.
    \nZ ocele je kapot\u00e1\u017e, no je vyr\u00e1ban\u00e1 studen\u00fdm pretv\u00e1rnen\u00edm, t.j. \u0161upli do obrovsk\u00e9ho lisu kus plechu a on stl\u00e1\u010dal plech dovtedy, k\u00fdm nebol dosiahnut\u00fd potrebn\u00fd tvar (siv\u00e1 farba). Teplom pretv\u00e1rnen\u00e9 oce\u013eov\u00e9 \u010dasti tvoria iba 17% celej kon\u0161trukcie auta a to v chrbtovej \u010dasti a v st\u013apikoch (fialov\u00e1 farba). Pre\u010do na to Audi chcelo upozorni\u0165? Preto\u017ee na tepeln\u00e9 pretv\u00e1rnenie je potrebn\u00e9 obrovsk\u00e9 mno\u017estvo energii a na v\u00fdrobu energii je potrebn\u00e9 doslova obera\u0165 pr\u00edrodu o pr\u00edrodn\u00e9 zdroje. \u0160koda len, \u017ee ekologicky nemysleli aj ke\u010f os\u00e1dzali motory s falo\u0161n\u00fdmi emisiami do predch\u00e1dzaj\u00facich modelov.<\/p>\n

    Podvozok a jazdn\u00e1 dynamika<\/h3>\n

    Podvozok bol laden\u00fd s d\u00f4razom na v\u00e4\u010d\u0161\u00ed komfort, ak\u00fd pon\u00fakala A4 doteraz. No st\u00e1le si zachovala jazdn\u00fa dynamiku, ktor\u00e1 prispeje vodi\u010dovi k \u00fasmevu na tv\u00e1ri. Riadenie je zlo\u017een\u00e9 z 5 \u010dast\u00ed: volant, predn\u00e1 n\u00e1prava (2 \u010dasti), zadn\u00e1 n\u00e1prava (2 \u010dasti). Jazdn\u00e1 dynamika sa teraz chov\u00e1 pod\u013ea vodi\u010da a jeho sp\u00f4sobu pr\u00e1ce s volanom a s plynov\u00fdm ped\u00e1lom po\u010das celej jazdy. Audi drive select toti\u017e zah\u0155\u0148a aj magnetick\u00e9 tlmi\u010de, ktor\u00e9 menia svoju tuhos\u0165 pod\u013ea potreby (\u0161koda \u017ee je to za pr\u00edplatok).<\/p>\n

    \"Audi<\/a>

    Zadn\u00e1 n\u00e1prava modelu quattro sport<\/p><\/div>\n

    \"Audi<\/a>

    Predn\u00e1 n\u00e1prava<\/p><\/div>\n

    \"Audi-A4-quattro_21_9\"<\/a><\/p>\n

    To\u013eko nezmyseln\u00fdch slov, aby sme zistili, \u017ee Audi m\u00e1 opr\u00e1vnen\u00fa cenovku na svojich aut\u00e1ch.<\/p>\n

    Autor: Ing. Vladislav Baniari; Zdroj+foto: Audi Illustrated<\/p>\n","protected":false},"excerpt":{"rendered":"

    Audi je jedna z ve\u013emi m\u00e1la zna\u010diek, ktor\u00e1 sa sna\u017e\u00ed svoj\u00edm priaznivcom-z\u00e1kazn\u00edkom uk\u00e1za\u0165, \u010do je pod plechmi a netla\u010d\u00ed iba na \u0161tandardn\u00e9 marketingov\u00e9 \u0165ahy. Aerodynamika. Nemyslite si, \u017ee sa to osob\u00e1kov net\u00fdka Prirodzene je na aerodynamiku, teda na pr\u00e1cu s obtekaj\u00facim vzduchom kladen\u00fd d\u00f4raz hlavne v s\u00fa\u0165a\u017eiach, \u010di u\u017e s\u00fa to aut\u00e1 triedy GT, LMS, […]<\/p>\n","protected":false},"author":1,"featured_media":14479,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[9,4],"tags":[552,697,103,1473,1474,1478,1476,885,150,1479,1475,1477],"class_list":["post-14458","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-audi","category-dokumentarne","tag-a4","tag-aerodynamika","tag-audi-2","tag-avant","tag-cw","tag-kryt","tag-magneticke-tlmice","tag-podvozok","tag-quattro","tag-spojler","tag-sucinitel-odporu-vzduchu","tag-variabilne-riadenie"],"translation":{"provider":"WPGlobus","version":"3.0.0","language":"de","enabled_languages":["sk","en","de"],"languages":{"sk":{"title":true,"content":true,"excerpt":false},"en":{"title":false,"content":false,"excerpt":false},"de":{"title":false,"content":false,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/mixmotor.eu\/de\/wp-json\/wp\/v2\/posts\/14458","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mixmotor.eu\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mixmotor.eu\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mixmotor.eu\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mixmotor.eu\/de\/wp-json\/wp\/v2\/comments?post=14458"}],"version-history":[{"count":3,"href":"https:\/\/mixmotor.eu\/de\/wp-json\/wp\/v2\/posts\/14458\/revisions"}],"predecessor-version":[{"id":14482,"href":"https:\/\/mixmotor.eu\/de\/wp-json\/wp\/v2\/posts\/14458\/revisions\/14482"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mixmotor.eu\/de\/wp-json\/wp\/v2\/media\/14479"}],"wp:attachment":[{"href":"https:\/\/mixmotor.eu\/de\/wp-json\/wp\/v2\/media?parent=14458"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mixmotor.eu\/de\/wp-json\/wp\/v2\/categories?post=14458"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mixmotor.eu\/de\/wp-json\/wp\/v2\/tags?post=14458"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}