{"id":6290,"date":"2016-03-14T00:17:42","date_gmt":"2016-03-14T00:17:42","guid":{"rendered":"http:\/\/www.autolexicon.net\/?p=6290"},"modified":"2016-03-26T10:49:06","modified_gmt":"2016-03-26T10:49:06","slug":"puretech","status":"publish","type":"post","link":"https:\/\/www.autolexicon.net\/cs\/articles\/puretech\/","title":{"rendered":"PureTech"},"content":{"rendered":"

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V\u00a0roce 2012 p\u0159edstavil koncern PSA nov\u00e9 p\u0159epl\u0148ovan\u00e9 t\u0159\u00edv\u00e1lcov\u00e9 motory \u0159ady EB. Tato nov\u00e1 \u0159ada se stala n\u00e1stupcem \u0159ady TU uveden\u00e9 ji\u017e v\u00a0roce 1986. Obchodn\u00ed ozna\u010den\u00ed agreg\u00e1t\u016f \u0159ady EB je PureTech.<\/strong> Motory PureTech se vyr\u00e1b\u011bj\u00ed na severov\u00fdchod\u011b Francie v\u00a0z\u00e1vod\u011b Tr\u00e9mery a koncern PSA po\u010d\u00edt\u00e1 s\u00a0pou\u017eit\u00edm t\u011bchto motor\u016f do v\u011bt\u0161iny vyr\u00e1b\u011bn\u00fdch model\u016f<\/strong>: Peugeot 108, 208, 301, 308, 2008, 3008 a 5008 a Citro\u00ebn C1, C3, C4, C4 Cactus, C4 Picasso a Berlingo a d\u00e1le automobily DS3 a DS4.<\/span><\/p>\n

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Konstrukce motoru:
\n<\/strong>Jako v\u011bt\u0161ina t\u0159\u00edv\u00e1lcov\u00fdch motor\u016f i motory PureTech jsou typick\u00e9 vysok\u00fdm kroutic\u00edm momentem<\/strong> dostupn\u00fdm ji\u017e od n\u00edzk\u00fdch ot\u00e1\u010dek. U v\u00fdkonn\u011bj\u0161\u00edch verz\u00ed tohoto motoru je \u00factyhodn\u00e9ho maxima to\u010div\u00e9ho momentu 230 Nm dosahov\u00e1no ji\u017e od 1750 ot\/min! Motor 1.2 PureTech s\u00a0v\u00fdkonem 96 kW (130 ko\u0148sk\u00fdch sil<\/a>) lze ve sv\u00e9 t\u0159\u00edd\u011b dokonce ozna\u010dit jako pap\u00edrov\u011b nejv\u00fdkonn\u011bj\u0161\u00ed<\/strong>. Nap\u0159\u00edklad: motor 1.2 TSI<\/a> koncernu VW b\u011b\u017en\u011b nab\u00edz\u00ed jen 81 kW; motor 1.2 TCe<\/a> sp\u0159\u00edzn\u011bn\u00e9 zna\u010dky Renault sice nab\u00eddne 96 kW, ale o 25 Nm men\u0161\u00ed kroutic\u00ed moment.<\/span><\/p>\n

Motory PureTech jsou leh\u010d\u00ed a kompaktn\u011bj\u0161\u00ed ne\u017e jejich p\u0159edch\u016fdci. Jsou vybaveny turbodmychadlem<\/strong> a prom\u011bnn\u00fdm \u010dasov\u00e1n\u00edm sac\u00edch i v\u00fdfukov\u00fdch ventil\u016f<\/strong><\/a>. Ventilov\u00e9 rozvody typu DOHC se \u010dty\u0159mi ventily na v\u00e1lec jsou poh\u00e1n\u011bny pomoc\u00ed \u0159emenu v olejov\u00e9 l\u00e1zni. Podobn\u011b jako u konkuren\u010dn\u00edch motor\u016f TSI<\/a> a EcoBoost<\/a>, m\u00e1 i motor PureTech sb\u011brn\u00e9 potrub\u00ed integrovan\u00e9 do hlavy motoru.<\/strong> T\u00edm se mimo jin\u00e9 zkracuje cesta v\u00fdfukov\u00fdch plyn\u016f k\u00a0turbodmychadlu, d\u00edky tomu maj\u00ed motory PureTech dobrou odezvu na plyn a kompaktn\u00ed konstrukci.<\/span><\/p>\n

\"\"<\/a>\u00a0\u00a0\u00a0\u00a0 \"\"<\/a><\/p>\n

Je zn\u00e1mo, \u017ee t\u0159\u00edv\u00e1lcov\u00e9 motory maj\u00ed oproti \u010dty\u0159v\u00e1lcov\u00fdm p\u0159irozen\u011b hrub\u0161\u00ed chod, ne\u017e\u00e1douc\u00ed vibrace t\u0159\u00edv\u00e1lcov\u00e9ho motoru PureTech jsou proto tlumeny prost\u0159ednictv\u00edm vyva\u017eovac\u00ed h\u0159\u00eddele<\/strong>. Konstrukt\u00e9\u0159i tak\u00e9 v\u011bnovali velkou pozornost sn\u00ed\u017een\u00ed vnit\u0159n\u00edho t\u0159en\u00ed motoru<\/strong>. Toho se poda\u0159ilo dos\u00e1hnout za pomoci syntetick\u00e9ho diamantu, kter\u00fdm jsou pota\u017eeny nap\u0159\u00edklad p\u00edstn\u00ed \u010depy, p\u00edstn\u00ed krou\u017eky a zdvih\u00e1tka ventil\u016f.<\/span><\/p>\n

Zlep\u0161en\u00ed efektivity spalov\u00e1n\u00ed bylo dosa\u017eeno vyu\u017eit\u00edm vysokotlak\u00e9ho p\u0159\u00edm\u00e9ho vst\u0159ikov\u00e1n\u00ed benz\u00ednu<\/strong><\/a> a vyu\u017eit\u00edm a\u017e t\u0159ech trysek b\u011bhem jednoho pracovn\u00edho cyklu motoru. Vst\u0159ikovac\u00ed tlak dosahuje a\u017e 200 bar\u016f<\/strong> (pro srovn\u00e1n\u00ed naftov\u00e9 motory dosahuj\u00ed mnohem vy\u0161\u0161\u00edch tlak\u016f 2000 – 2500 bar\u016f, ale u nafty tyto vysok\u00e9 tlaky souvis\u00ed s\u00a0jin\u00fdm principem spalov\u00e1n\u00ed). N\u00edzkotlak\u00e9 turbo dmychadlo zvy\u0161uje v\u00fdkon motoru a pom\u00e1h\u00e1 mu k ploch\u00e9 k\u0159ivce kroutic\u00edho momentu.<\/span><\/p>\n

Video:<\/strong><\/span><\/p>\n