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Je dostupný v 51 jazykoch" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-51" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">51 jazykov</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Oktaangetal" title="Oktaangetal – afrikánčina" lang="af" hreflang="af" data-title="Oktaangetal" data-language-autonym="Afrikaans" data-language-local-name="afrikánčina" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B1%D9%82%D9%85_%D8%A7%D9%84%D8%A3%D9%88%D9%83%D8%AA%D8%A7%D9%86" title="رقم الأوكتان – arabčina" lang="ar" hreflang="ar" data-title="رقم الأوكتان" data-language-autonym="العربية" data-language-local-name="arabčina" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Oktan_%C9%99d%C9%99di" title="Oktan ədədi – azerbajdžančina" lang="az" hreflang="az" data-title="Oktan ədədi" data-language-autonym="Azərbaycanca" data-language-local-name="azerbajdžančina" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%90%D0%BA%D1%82%D0%B0%D0%BD%D0%B0%D0%B2%D1%8B_%D0%BB%D1%96%D0%BA" title="Актанавы лік – bieloruština" lang="be" hreflang="be" data-title="Актанавы лік" data-language-autonym="Беларуская" data-language-local-name="bieloruština" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9E%D0%BA%D1%82%D0%B0%D0%BD%D0%BE%D0%B2%D0%BE_%D1%87%D0%B8%D1%81%D0%BB%D0%BE" title="Октаново число – bulharčina" lang="bg" hreflang="bg" data-title="Октаново число" data-language-autonym="Български" data-language-local-name="bulharčina" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Oktanski_broj" title="Oktanski broj – bosniačtina" lang="bs" hreflang="bs" data-title="Oktanski broj" data-language-autonym="Bosanski" data-language-local-name="bosniačtina" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/%C3%8Dndex_d%27oct%C3%A0" title="Índex d'octà – katalánčina" lang="ca" hreflang="ca" data-title="Índex d'octà" data-language-autonym="Català" data-language-local-name="katalánčina" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%DA%98%D9%85%D8%A7%D8%B1%DB%95%DB%8C_%D8%A6%DB%86%DA%A9%D8%AA%D8%A7%D9%86" title="ژمارەی ئۆکتان – kurdčina (sorání)" lang="ckb" hreflang="ckb" data-title="ژمارەی ئۆکتان" data-language-autonym="کوردی" data-language-local-name="kurdčina (sorání)" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Oktanov%C3%A9_%C4%8D%C3%ADslo" title="Oktanové číslo – čeština" lang="cs" hreflang="cs" data-title="Oktanové číslo" data-language-autonym="Čeština" data-language-local-name="čeština" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Oktantal" title="Oktantal – dánčina" lang="da" hreflang="da" data-title="Oktantal" data-language-autonym="Dansk" data-language-local-name="dánčina" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Oktanzahl" title="Oktanzahl – nemčina" lang="de" hreflang="de" data-title="Oktanzahl" data-language-autonym="Deutsch" data-language-local-name="nemčina" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%91%CF%81%CE%B9%CE%B8%CE%BC%CF%8C%CF%82_%CE%BF%CE%BA%CF%84%CE%B1%CE%BD%CE%AF%CE%BF%CF%85" title="Αριθμός οκτανίου – gréčtina" lang="el" hreflang="el" data-title="Αριθμός οκτανίου" data-language-autonym="Ελληνικά" data-language-local-name="gréčtina" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Octane_rating" title="Octane rating – angličtina" lang="en" hreflang="en" data-title="Octane rating" data-language-autonym="English" data-language-local-name="angličtina" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Oktana_indico" title="Oktana indico – esperanto" lang="eo" hreflang="eo" data-title="Oktana indico" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/N%C3%BAmero_de_octano" title="Número de octano – španielčina" lang="es" hreflang="es" data-title="Número de octano" data-language-autonym="Español" data-language-local-name="španielčina" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Oktaaniarv" title="Oktaaniarv – estónčina" lang="et" hreflang="et" data-title="Oktaaniarv" data-language-autonym="Eesti" data-language-local-name="estónčina" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Oktano-zenbaki" title="Oktano-zenbaki – baskičtina" lang="eu" hreflang="eu" data-title="Oktano-zenbaki" data-language-autonym="Euskara" data-language-local-name="baskičtina" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B9%D8%AF%D8%AF_%D8%A7%DA%A9%D8%AA%D8%A7%D9%86" title="عدد اکتان – perzština" lang="fa" hreflang="fa" data-title="عدد اکتان" data-language-autonym="فارسی" data-language-local-name="perzština" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Oktaaniluku" title="Oktaaniluku – fínčina" lang="fi" hreflang="fi" data-title="Oktaaniluku" data-language-autonym="Suomi" data-language-local-name="fínčina" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Indice_d%27octane" title="Indice d'octane – francúzština" lang="fr" hreflang="fr" data-title="Indice d'octane" data-language-autonym="Français" data-language-local-name="francúzština" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Uimhir_ocht%C3%A1in" title="Uimhir ochtáin – írčina" lang="ga" hreflang="ga" data-title="Uimhir ochtáin" data-language-autonym="Gaeilge" data-language-local-name="írčina" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%9E%D7%A1%D7%A4%D7%A8_%D7%90%D7%95%D7%A7%D7%98%D7%9F" title="מספר אוקטן – hebrejčina" lang="he" hreflang="he" data-title="מספר אוקטן" data-language-autonym="עברית" data-language-local-name="hebrejčina" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Oktanski_broj" title="Oktanski broj – chorvátčina" lang="hr" hreflang="hr" data-title="Oktanski broj" data-language-autonym="Hrvatski" data-language-local-name="chorvátčina" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Okt%C3%A1nsz%C3%A1m" title="Oktánszám – maďarčina" lang="hu" hreflang="hu" data-title="Oktánszám" data-language-autonym="Magyar" data-language-local-name="maďarčina" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%95%D5%AF%D5%BF%D5%A1%D5%B6%D5%A1%D5%B5%D5%AB%D5%B6_%D5%A9%D5%AB%D5%BE" title="Օկտանային թիվ – arménčina" lang="hy" hreflang="hy" data-title="Օկտանային թիվ" data-language-autonym="Հայերեն" data-language-local-name="arménčina" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Bilangan_oktan" title="Bilangan oktan – indonézština" lang="id" hreflang="id" data-title="Bilangan oktan" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonézština" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Numero_di_ottano" title="Numero di ottano – taliančina" lang="it" hreflang="it" data-title="Numero di ottano" data-language-autonym="Italiano" data-language-local-name="taliančina" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%82%AA%E3%82%AF%E3%82%BF%E3%83%B3%E4%BE%A1" title="オクタン価 – japončina" lang="ja" hreflang="ja" data-title="オクタン価" data-language-autonym="日本語" data-language-local-name="japončina" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%9E%D0%BA%D1%82%D0%B0%D0%BD_%D1%81%D0%B0%D0%BD%D1%8B" title="Октан саны – kazaština" lang="kk" hreflang="kk" data-title="Октан саны" data-language-autonym="Қазақша" data-language-local-name="kazaština" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%98%A5%ED%83%84%EA%B0%80" title="옥탄가 – kórejčina" lang="ko" hreflang="ko" data-title="옥탄가" data-language-autonym="한국어" data-language-local-name="kórejčina" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%9E%D0%BA%D1%82%D0%B0%D0%BD_%D1%81%D0%B0%D0%BD%D1%8B" title="Октан саны – kirgizština" lang="ky" hreflang="ky" data-title="Октан саны" data-language-autonym="Кыргызча" data-language-local-name="kirgizština" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Oktaninis_skai%C4%8Dius" title="Oktaninis skaičius – litovčina" lang="lt" hreflang="lt" data-title="Oktaninis skaičius" data-language-autonym="Lietuvių" data-language-local-name="litovčina" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Okt%C4%81nskaitlis" title="Oktānskaitlis – lotyština" lang="lv" hreflang="lv" data-title="Oktānskaitlis" data-language-autonym="Latviešu" data-language-local-name="lotyština" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%92%E0%B4%95%E0%B5%8D%E0%B4%9F%E0%B5%87%E0%B5%BB_%E0%B4%B8%E0%B4%82%E0%B4%96%E0%B5%8D%E0%B4%AF" title="ഒക്ടേൻ സംഖ്യ – malajálamčina" lang="ml" hreflang="ml" data-title="ഒക്ടേൻ സംഖ്യ" data-language-autonym="മലയാളം" data-language-local-name="malajálamčina" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Penarafan_oktana" title="Penarafan oktana – malajčina" lang="ms" hreflang="ms" data-title="Penarafan oktana" data-language-autonym="Bahasa Melayu" data-language-local-name="malajčina" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Octaangetal" title="Octaangetal – holandčina" lang="nl" hreflang="nl" data-title="Octaangetal" data-language-autonym="Nederlands" data-language-local-name="holandčina" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Oktantall" title="Oktantall – nórčina (bokmal)" lang="nb" hreflang="nb" data-title="Oktantall" data-language-autonym="Norsk bokmål" data-language-local-name="nórčina (bokmal)" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Liczba_oktanowa" title="Liczba oktanowa – poľština" lang="pl" hreflang="pl" data-title="Liczba oktanowa" data-language-autonym="Polski" data-language-local-name="poľština" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D8%A7%D9%88%DA%A9%D9%B9%DB%8C%D9%86_%DA%AF%D9%86%D8%AA%DB%8C" title="اوکٹین گنتی – Western Punjabi" lang="pnb" hreflang="pnb" data-title="اوکٹین گنتی" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Octanagem" title="Octanagem – portugalčina" lang="pt" hreflang="pt" data-title="Octanagem" data-language-autonym="Português" data-language-local-name="portugalčina" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Cifr%C4%83_octanic%C4%83" title="Cifră octanică – rumunčina" lang="ro" hreflang="ro" data-title="Cifră octanică" data-language-autonym="Română" data-language-local-name="rumunčina" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9E%D0%BA%D1%82%D0%B0%D0%BD%D0%BE%D0%B2%D0%BE%D0%B5_%D1%87%D0%B8%D1%81%D0%BB%D0%BE" title="Октановое число – ruština" lang="ru" hreflang="ru" data-title="Октановое число" data-language-autonym="Русский" data-language-local-name="ruština" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Octane_rating" title="Octane rating – Simple English" lang="en-simple" hreflang="en-simple" data-title="Octane rating" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/Oktanski_broj" title="Oktanski broj – srbčina" lang="sr" hreflang="sr" data-title="Oktanski broj" data-language-autonym="Српски / srpski" data-language-local-name="srbčina" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Oktantal" title="Oktantal – švédčina" lang="sv" hreflang="sv" data-title="Oktantal" data-language-autonym="Svenska" data-language-local-name="švédčina" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%8E%E0%AE%9F%E0%AF%8D%E0%AE%9F%E0%AE%95_%E0%AE%8E%E0%AE%A3%E0%AF%8D" title="எட்டக எண் – tamilčina" lang="ta" hreflang="ta" data-title="எட்டக எண்" data-language-autonym="தமிழ்" data-language-local-name="tamilčina" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Oktan_say%C4%B1s%C4%B1" title="Oktan sayısı – turečtina" lang="tr" hreflang="tr" data-title="Oktan sayısı" data-language-autonym="Türkçe" data-language-local-name="turečtina" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9E%D0%BA%D1%82%D0%B0%D0%BD%D0%BE%D0%B2%D0%B5_%D1%87%D0%B8%D1%81%D0%BB%D0%BE" title="Октанове число – ukrajinčina" lang="uk" hreflang="uk" data-title="Октанове число" data-language-autonym="Українська" data-language-local-name="ukrajinčina" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Oktan_soni" title="Oktan soni – uzbečtina" lang="uz" hreflang="uz" data-title="Oktan soni" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="uzbečtina" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Ch%E1%BB%89_s%E1%BB%91_octan" title="Chỉ số octan – vietnamčina" lang="vi" hreflang="vi" data-title="Chỉ số octan" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamčina" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E8%BE%9B%E7%83%B7%E5%80%BC" title="辛烷值 – čínština" lang="zh" hreflang="zh" data-title="辛烷值" data-language-autonym="中文" data-language-local-name="čínština" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q193423#sitelinks-wikipedia" title="Upraviť medzijazykové odkazy" class="wbc-editpage">Upraviť odkazy</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Menné priestory"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo" title="Zobraziť obsah stránky [c]" accesskey="c"><span>Stránka</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Diskusia:Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo" rel="discussion" title="Diskusia o obsahu stránky [t]" accesskey="t"><span>Diskusia</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Změnit 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mw-list-item"><a href="/w/index.php?title=Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo&veaction=edit" title="Upraviť túto stránku [v]" accesskey="v"><span>Upraviť</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo&action=edit" title="Upraviť zdrojový kód tejto stránky [e]" accesskey="e"><span>Upraviť zdroj</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo&action=history" title="Minulé revízie tejto stránky. [h]" accesskey="h"><span>Zobraziť históriu</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Nástroje stránky"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Nástroje" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Nástroje</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Nástroje</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">presunúť do postranného panelu</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">skryť</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Další možnosti" > <div class="vector-menu-heading"> Akcie </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo"><span>Čítať</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo&veaction=edit" title="Upraviť túto stránku [v]" accesskey="v"><span>Upraviť</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo&action=edit" title="Upraviť zdrojový kód tejto stránky [e]" accesskey="e"><span>Upraviť zdroj</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo&action=history"><span>Zobraziť históriu</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Všeobecné </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/%C5%A0peci%C3%A1lne:%C4%8CoOdkazujeSem/Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo" title="Zoznam všetkých wiki stránok, ktoré sem odkazujú [j]" accesskey="j"><span>Odkazy na túto stránku</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/%C5%A0peci%C3%A1lne:S%C3%BAvisiacePosledn%C3%A9%C3%9Apravy/Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo" rel="nofollow" title="Posledné úpravy na stránkach, na ktoré odkazuje táto stránka [k]" accesskey="k"><span>Súvisiace úpravy</span></a></li><li id="t-upload" class="mw-list-item"><a href="//commons.wikimedia.org/wiki/Special:UploadWizard?uselang=sk" title="Nahranie súborov [u]" accesskey="u"><span>Nahrať súbor</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/%C5%A0peci%C3%A1lne:%C5%A0peci%C3%A1lneStr%C3%A1nky" title="Zoznam všetkých špeciálnych stránok [q]" accesskey="q"><span>Špeciálne stránky</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo&oldid=7738491" title="Trvalý odkaz na túto verziu stránky"><span>Trvalý odkaz</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo&action=info" title="Viac informácií o tejto stránke"><span>Informácie o stránke</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=%C5%A0peci%C3%A1lne:Citova%C5%A5&page=Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo&id=7738491&wpFormIdentifier=titleform" title="Informácie ako citovať túto stránku"><span>Citovať túto stránku</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=%C5%A0peci%C3%A1lne:UrlShortener&url=https%3A%2F%2Fsk.wikipedia.org%2Fwiki%2FOkt%25C3%25A1nov%25C3%25A9_%25C4%258D%25C3%25ADslo"><span>Získať skrátené URL</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=%C5%A0peci%C3%A1lne:QrCode&url=https%3A%2F%2Fsk.wikipedia.org%2Fwiki%2FOkt%25C3%25A1nov%25C3%25A9_%25C4%258D%25C3%25ADslo"><span>Stiahnuť QR kód</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Tlačiť/exportovať </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=%C5%A0peci%C3%A1lne:Knihy&bookcmd=book_creator&referer=Okt%C3%A1nov%C3%A9+%C4%8D%C3%ADslo"><span>Vytvoriť knihu</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=%C5%A0peci%C3%A1lne:DownloadAsPdf&page=Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo&action=show-download-screen"><span>Stiahnuť ako PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo&printable=yes" title="Verzia tejto stránky pre 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id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Vzhľad</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">presunúť do postranného panelu</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">skryť</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">z Wikipédie, slobodnej encyklopédie</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="sk" dir="ltr"><figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/S%C3%BAbor:HE15_-_Voorburg.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/26/HE15_-_Voorburg.JPG/220px-HE15_-_Voorburg.JPG" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/26/HE15_-_Voorburg.JPG/330px-HE15_-_Voorburg.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/26/HE15_-_Voorburg.JPG/440px-HE15_-_Voorburg.JPG 2x" data-file-width="2288" data-file-height="1712" /></a><figcaption>Označenie oktánového čísla na čerpacom stojane</figcaption></figure> <p><b>Oktánovým číslom</b> (OČ) sa hodnotí odolnosť <a href="/wiki/Benz%C3%ADn" title="Benzín">benzínu</a> (a iných <a href="/wiki/Palivo" title="Palivo">palív</a> pre <a href="/wiki/Z%C3%A1%C5%BEihov%C3%BD_motor" title="Zážihový motor">zážihové motory</a>) proti <a href="/wiki/Detona%C4%8Dn%C3%A9_spa%C4%BEovanie" title="Detonačné spaľovanie">detonačnému spaľovaniu</a>. Čím je vyššie oktánové číslo, tým je palivo odolnejšie proti detonačnému spaľovaniu. </p><p>Oktánové číslo paliva sa zisťuje porovnávaním na skúšobnom zariadení s referenčným palivom. Oktánové číslo paliva odpovedá percentuálnemu objemovému podielu čistého <a href="/wiki/Izookt%C3%A1n" title="Izooktán">izooktánu</a> (C<sub>8</sub>H<sub>18</sub>) v zmesi s <i>n</i>-<a href="/wiki/Hept%C3%A1n" title="Heptán">heptánom</a> (C<sub>7</sub>H<sub>16</sub>), ktoré sa na skúšobnom zariadení začína detonačne spaľovať pri rovnakom <a href="/wiki/Kompresn%C3%BD_pomer" title="Kompresný pomer">kompresnom pomere</a> ako porovnávané palivo. Čistý izooktán má oktánové číslo 100, heptán má oktánové číslo 0. Oktánové číslo teda môže mať aj hodnotu vyššiu ako 100, ak je dané palivo ešte odolnejšie proti samovznieteniu než čistý izooktán. Napríklad oktánové číslo 95 znamená, že palivo je rovnako odolné proti samovznieteniu ako zmes pozostávajúca z 95% oktánu a 5% heptánu. </p><p>Oktánove číslo je jedna zo základných charakteristík motorových palív pre zážihové motory. Je súčasťou označenia paliva, uvádza sa napr. na stojanoch čerpacích stanic a pod. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Zisťovanie_oktánového_čísla"><span id="Zis.C5.A5ovanie_okt.C3.A1nov.C3.A9ho_.C4.8D.C3.ADsla"></span>Zisťovanie oktánového čísla</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo&veaction=edit&section=1" title="Upraviť sekciu: Zisťovanie oktánového čísla" class="mw-editsection-visualeditor"><span>upraviť</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo&action=edit&section=1" title="Editovat zdrojový kód sekce Zisťovanie oktánového čísla"><span>upraviť zdroj</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Správanie paliva je v skúšobnom jednovalcovom motore s premenlivým kompresným pomerom porovnané so správaním zmesi izo-oktánu a n-heptánu. Kompresný pomer sa postupne zvyšuje, až kým nezačne dochádzať k detonačnému spaľovaniu. Podľa spôsobu merania sa rozpoznávajú dve definície oktánového čísla: </p> <ul><li><b>Oktánové číslo merané výskumnou metódou</b> (OČ-VM) je určené pri 600 otáčkach za minútu, stálom predstihu zapaľovania 13° a teplote nasávanej zmesi 52 °C. Je vhodné pre popis správania pri nízkych otáčkach.</li> <li><b>Oktánové číslo merané motorovou metódou</b> (OČ-MM) je určené pri 900 otáčkach za minútu, automaticky regulovanom predstihu zapaľovania v rozsahu 19 - 26° a teplote nasávanej zmesi 149 °C. Popisuje hlavne správanie pri prevádzke vo vyšších teplotách.</li></ul> <p>Rozdiel oktánových čísiel rovnakého paliva meraných oboma metódami býva 2 - až 12 jednotiek. Nazýva sa tiež <i>citlivosť paliva na oktánové číslo</i>. Oktánové číslo merané motorovou metódou je typicky o cca 10 bodov nižšie. V praxi sa vo väčšine krajín uvádza oktánove číslo podľa výskumnej metódy, oktánove číslo podľa motorovej metódy je však definované v normách. </p><p>Niektoré krajiny (napr. USA, Kanada) používajú tiež oktánové číslo vypočítané ako priemer z OČ-VM a OČ-MM. Vďaka hore spomenutému rozdielu medzi oboma metódami, oktánové čísla na benzínových pumpách v USA sú zhruba o 4 až 5 jednotiek nižšie ako v Európe. 87-oktánový benzín v USA ("regular") tak zhruba zodpovedá 91-oktánovému v Európe. </p> <div class="mw-heading mw-heading2"><h2 id="Detonačné_spaľovanie"><span id="Detona.C4.8Dn.C3.A9_spa.C4.BEovanie"></span>Detonačné spaľovanie</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo&veaction=edit&section=2" title="Upraviť sekciu: Detonačné spaľovanie" class="mw-editsection-visualeditor"><span>upraviť</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo&action=edit&section=2" title="Editovat zdrojový kód sekce Detonačné spaľovanie"><span>upraviť zdroj</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Detonačné spaľovanie nastáva pri dostatočne vysokých teplotách a tlakoch vo valci v závislosti od odolnosti paliva. Prejavuje sa tak, že rýchlosť spaľovania dosahuje rýchlosť zvuku a v priestore valca sa šíria rázové vlny, ktoré sa odrážajú od vnútorných stien spaľovacieho priestoru. Tieto zvuky je možné rozoznať sluchom, preto sa jav nazýva laicky „klepanie motora“. </p> <div class="mw-heading mw-heading2"><h2 id="Antidetonačné_prísady"><span id="Antidetona.C4.8Dn.C3.A9_pr.C3.ADsady"></span>Antidetonačné prísady</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo&veaction=edit&section=3" title="Upraviť sekciu: Antidetonačné prísady" class="mw-editsection-visualeditor"><span>upraviť</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo&action=edit&section=3" title="Editovat zdrojový kód sekce Antidetonačné prísady"><span>upraviť zdroj</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Čistý benzín má veľmi nízke oktánové číslo. Preto sa do neho pridávajú prísady, ktoré ho zvyšujú. V minulosti boli najpoužívanejšie zlúčeniny <a href="/wiki/Olovo" title="Olovo">olova</a> (hlavne tetraetyl olova a tetrametyl olova). Liter benzínu tak obsahoval niekoľko desatín gramu olova, ktoré je však toxické. Dnes sú preto prímesi na báze olova zakázané. Ako antidetonátory sa používajú napr. aromatické amíny či halogenidy kovov. </p> <div class="mw-heading mw-heading2"><h2 id="Oktánove_čísla_niektorých_palív"><span id="Okt.C3.A1nove_.C4.8D.C3.ADsla_niektor.C3.BDch_pal.C3.ADv"></span>Oktánove čísla niektorých palív</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo&veaction=edit&section=4" title="Upraviť sekciu: Oktánove čísla niektorých palív" class="mw-editsection-visualeditor"><span>upraviť</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Okt%C3%A1nov%C3%A9_%C4%8D%C3%ADslo&action=edit&section=4" title="Editovat zdrojový kód sekce Oktánove čísla niektorých palív"><span>upraviť zdroj</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>Automobilový benzín: 87–98, dnes obvykle najmenej 95</li> <li>Letecký benzín: cca 87–107</li> <li>izooktán: 100</li> <li>Pretekársky benzín: cca 95–130</li> <li>Benzín používaný vo Formule 1: 95–102 (stanovené pravidlami)</li> <li><a href="/wiki/Skvapalnen%C3%BD_ropn%C3%BD_plyn" title="Skvapalnený ropný plyn">LPG</a>: cca 110</li> <li>V modelárstve do leteckých modelov a súťažných áut 10-16</li></ul> <div style="border: solid #aaa 1px; background: #f9f9f9; padding: 0ex 1ex; font-size: 90%;" class="tright" title="Portál, ktorého súčasťou je táto stránka"> <table style="margin: 0; padding: 0ex"> <tbody><tr> <td style="vertical-align:middle;margin: 0;"><span class="noviewer" typeof="mw:File"><a href="/wiki/S%C3%BAbor:Portal.svg" class="mw-file-description" title="Portal"><img alt="Portal" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c9/Portal.svg/36px-Portal.svg.png" decoding="async" width="36" height="32" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c9/Portal.svg/54px-Portal.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c9/Portal.svg/72px-Portal.svg.png 2x" data-file-width="36" data-file-height="32" /></a></span> </td> <td style="text-align:left;font-style:italic; font-weight:bold;"><a href="/wiki/Port%C3%A1l:Ch%C3%A9mia" title="Portál:Chémia">Chemický portál</a> </td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1&useformat=desktop" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Zdroj: „<a dir="ltr" href="https://sk.wikipedia.org/w/index.php?title=Oktánové_číslo&oldid=7738491">https://sk.wikipedia.org/w/index.php?title=Oktánové_číslo&oldid=7738491</a>“</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/%C5%A0peci%C3%A1lne:Kateg%C3%B3rie" title="Špeciálne:Kategórie">Kategória</a>: <ul><li><a href="/wiki/Kateg%C3%B3ria:Vlastnosti_pohonn%C3%BDch_hm%C3%B4t" title="Kategória:Vlastnosti pohonných hmôt">Vlastnosti pohonných hmôt</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Skryté kategórie: <ul><li><a href="/wiki/Kateg%C3%B3ria:Port%C3%A1l:Ch%C3%A9mia/Zapojen%C3%A9_%C4%8Dl%C3%A1nky" title="Kategória:Portál:Chémia/Zapojené články">Portál:Chémia/Zapojené články</a></li><li><a href="/wiki/Kateg%C3%B3ria:Wikip%C3%A9dia:%C4%8Cl%C3%A1nky_priamo_volaj%C3%BAce_%C5%A1abl%C3%B3nu_Port%C3%A1l" title="Kategória:Wikipédia:Články priamo volajúce šablónu Portál">Wikipédia:Články priamo volajúce šablónu Portál</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> Dátum a čas poslednej úpravy tejto stránky: 15. november 2023, 17:42.</li> <li id="footer-info-copyright">Text je dostupný za podmienok <a rel="nofollow" class="external text" href="//creativecommons.org/licenses/by-sa/4.0/">Creative Commons Attribution/Share-Alike License 4.0 Unported</a>; prípadne za ďalších podmienok. 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