{"id":594,"date":"2015-01-26T19:22:58","date_gmt":"2015-01-26T18:22:58","guid":{"rendered":"http:\/\/reconstruccionaccidentestrafico.com\/neumaticos-nuevos-siempre-atras-2\/"},"modified":"2024-08-27T10:49:13","modified_gmt":"2024-08-27T08:49:13","slug":"neumatics-nous-sempre-enrere","status":"publish","type":"post","link":"https:\/\/reconstruccionaccidentestrafico.com\/ca\/neumatics-nous-sempre-enrere\/","title":{"rendered":"Neum\u00e0tics nous, sempre enrere …"},"content":{"rendered":"\t\t
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On instal\u00b7lar els pneum\u00e0tics de millors prestacions?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Aquesta \u00e9s una reflexi\u00f3 de perqu\u00e8 \u00e9s recomanable instal\u00b7lar els neum\u00e0tics de millors prestacions, en el cas de no ser possible instal\u00b7lar els quatre pneum\u00e0tics de les mateixes caracter\u00edstiques, en l’eix posterior del vehicle.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Turismes subviradors<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Els vehicles tipus turisme moderns, entenent com moderns els fabricats en els \u00faltims 20 anys, en la seva gran majoria, estan dissenyats per ser subviradors. Aix\u00f2 vol dir que, davant d’una situaci\u00f3 en la qual s’excedeix l’acceleraci\u00f3 lateral m\u00e0xima suportada pel vehicle (per exemple en el tra\u00e7at d’un tram corb per sobre de la velocitat cr\u00edtica de la corba), el seu comportament esperat \u00e9s que se\u2019n “vagi “del tren davanter i no del de \u00a0darrere. Aquest comportament s’aconsegueix a partir d’un correcte disseny de la carrosseria i sobretot mitjan\u00e7ant el correcte disseny i ajustament del xass\u00eds del vehicle. El xass\u00eds d’un vehicle modern est\u00e0 composat b\u00e0sicament pels elements que fins ara es coneixien com la massa no suspesa<\/i>, entre ells les rodes. El disseny d’un vehicle es realitza considerant que aquest equipar\u00e0 neum\u00e0tics amb la mateixa capacitat d’adher\u00e8ncia en tots dos eixos i l’ajustament del sistema per aconseguir el comportament desitjat s’aconsegueix variant par\u00e0metres com la caiguda, l’angle de sortida, la converg\u00e8ncia, l’avan\u00e7, etc … de les rodes de cada eix. De la mateixa manera s’utilitzen sistemes com ara el repartidor de frenada per evitar que, independentment de la c\u00e0rrega del vehicle,\u00a0mai no\u00a0<\/span>s’arribi a bloquejar l’eix posterior abans que l’anterior durant una maniobra de frenada, per evitar aquest comportament sobrevirador no desitjat; o b\u00e9 l’ESP (Control d’estabilitat) que corregeix aquests comportaments en la mesura del possible un cop ja s’han produ\u00eft. Aquest comportament subvirador desitjat es justifica amb el fet que \u00e9s molt m\u00e9s f\u00e0cil controlar un vehicle que “se’n va” del tren davanter que del posterior, ja que aquesta \u00faltima situaci\u00f3, en la major part dels casos, acaba amb els t\u00edpics “virolles “i la p\u00e8rdua total del control del vehicle.<\/span><\/p>

\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Pneum\u00e0tics de l'eix posterior en pitjor qualitat: perills<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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En el cas d’un vehicle que no equipi neum\u00e0tics amb la mateixa capacitat d’adher\u00e8ncia en els dos eixos, sent els neum\u00e0tics de l’eix posterior de menor qualitat o trobant-se en pitjor estat, converteix aquest turisme en un vehicle amb tend\u00e8ncia sobreviradora en condicions de baixa adher\u00e8ncia , com \u00e9s el cas de cal\u00e7ada mullada. Com m\u00e9s gran sigui la difer\u00e8ncia de qualitat o estat entre els neum\u00e0tics d’ambd\u00f3s eixos, major ser\u00e0 la tend\u00e8ncia sobreviradora del turisme i, per tant, m\u00e9s dif\u00edcil de controlar en cas de p\u00e8rdua d’adher\u00e8ncia. En aquest cas, el fet d’equipar uns neum\u00e0tics de majors prestacions o en millor estat a l’eix anterior \u00e9s perjudicial en el correcte comportament del vehicle.<\/p>\n

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Per evitar aquesta situaci\u00f3, els fabricants sempre recomanen instal\u00b7lar els neum\u00e0tics en millor estat, en el cas de substituir els d’un sol eix, en l’eix posterior. No obstant aix\u00f2, la pr\u00e0ctica habitual, derivada del major desgast dels neum\u00e0tics de l’eix davanter (tracci\u00f3 davantera), \u00e9s la de col\u00b7locar els neum\u00e0tics nous o en millor estat en l’eix davanter, i els m\u00e9s gastats en l’eix posterior per allargar la vida dels mateixos.<\/p>\n

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Neum\u00e0tics nous, sempre enrere.<\/p>\n

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Jordi Rivera Garcia<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

T’expliquem perqu\u00e8 \u00e9s important instal\u00b7lar els pneum\u00e0tics de millors prestacions a l’eix posterior del vehicle si no s\u00f3n tots de les mateixes caracter\u00edstiques.<\/p>\n","protected":false},"author":3,"featured_media":592,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"_joinchat":[],"footnotes":""},"categories":[1],"tags":[],"class_list":["post-594","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticies"],"acf":[],"yoast_head":"\n\u25b7Neum\u00e0tics nous, sempre enrere ... - \u3010 Perito de Accidentes de Tr\u00e1fico en Barcelona | Investigaci\u00f3n y Reconstrucci\u00f3n \u3011<\/title>\n<meta name=\"description\" content=\"Reflexi\u00f3 sobre com l'estat dels neum\u00e0tics pot influir en un accident de transit.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/reconstruccionaccidentestrafico.com\/ca\/neumatics-nous-sempre-enrere\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Com influeix l'estat dels neum\u00e0tics en un accident de transit. 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