{"id":1536,"date":"2023-05-03T16:57:52","date_gmt":"2023-05-03T14:57:52","guid":{"rendered":"https:\/\/motycs.it\/?page_id=1536"},"modified":"2023-05-09T08:07:34","modified_gmt":"2023-05-09T06:07:34","slug":"banchi-prova-potenza-monorullo-birullo","status":"publish","type":"page","link":"https:\/\/motycs.it\/pt\/bancadas-de-potencia-biroll-de-rolo-unico\/","title":{"rendered":"Bancos de ensaio de rolos duplos ou de rolos simples"},"content":{"rendered":"<div data-vc-full-width=\"true\" data-vc-full-width-init=\"false\" class=\"vc_row wpb_row vc_row-fluid vc_custom_1473769871896 vc_row-has-fill\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"sc_section margin_top_large margin_bottom_huge\" data-animation=\"animated fadeInUp normal\" style=\"max-width: 1030px; margin: auto;\"><div class=\"sc_section_inner\"><h6 class=\"sc_section_subtitle sc_item_subtitle\">Teoria<\/h6><div class=\"sc_section_content_wrap\">\n\t<div class=\"wpb_text_column wpb_content_element  vc_custom_1683612450690\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<h4 class=\"p1\"><span class=\"s1\">A IMPORT\u00c2NCIA DO DI\u00c2METRO DOS ROLOS<\/span><\/h4>\n<p class=\"p1\"><span class=\"s1\">Em bancos de ensaio de pot\u00eancia, <strong>o di\u00e2metro dos rolos \u00e9 um dos principais factores que limitam a pot\u00eancia mensur\u00e1vel.<\/strong><\/span><\/p>\n<p><strong>Este limite \u00e9<\/strong> <strong>imposto<\/strong> pela velocidade m\u00e1xima que pode ser atingida no banco de ensaios, que \u00e9 determinada <strong>por dois factores:<\/strong><\/p>\n<ul>\n<li><strong>Di\u00e2metro exterior dos rolos do banco de ensaio<\/strong><\/li>\n<li><strong>Velocidade m\u00e1xima em rpm dos rolamentos de apoio utilizados no banco de ensaio<\/strong><\/li>\n<\/ul>\n<p><strong>Os suportes verticais <\/strong>(rolamentos)<strong> dispon\u00edvel no mercado<\/strong>, adequados aos di\u00e2metros e pesos necess\u00e1rios para este tipo de utiliza\u00e7\u00e3o, <strong>est\u00e3o certificados para velocidades m\u00e1ximas de cerca de 3.000 rpm<\/strong> (com algumas excep\u00e7\u00f5es a 3.500 rpm).<\/p>\n<p>Assim sendo, <strong>dado o di\u00e2metro dos rolos<\/strong> (e a sua circunfer\u00eancia) <strong>podemos deduzir a velocidade m\u00e1xima que pode ser atingida no banco de ensaio <\/strong>(sabendo que cada volta do rolo corresponde obviamente a uma determinada quilometragem).<\/p>\n<p>Para efeitos dos c\u00e1lculos a seguir apresentados, tom\u00e1mos como refer\u00eancia<\/p>\n<ul>\n<li>i <strong>rolamentos com o mais alto desempenho dispon\u00edvel<\/strong>, certificado a<strong> 3.500 rpm <\/strong><\/li>\n<li>i <strong>Di\u00e2metros de rolos populares<\/strong> entre os diferentes produtores:<\/li>\n<\/ul>\n<h6><strong>VELOCIDADES M\u00c1XIMAS NOS BANCOS DE ROLOS<\/strong><\/h6>\n<ul>\n<li><strong>Rolos de 240 mm<\/strong>\u00a0&#8211; <strong>Velocidade m\u00e1xima 158 km\/h<\/strong><\/li>\n<li><strong>Rolos de 318 mm<\/strong>\u00a0&#8211; <strong>Velocidade m\u00e1xima 210 km\/h<\/strong><\/li>\n<li><strong>Rolos de 400 mm<\/strong>\u00a0&#8211; <strong>Velocidade m\u00e1xima\u00a0<\/strong><strong>264 km\/h<\/strong><\/li>\n<\/ul>\n<p>I <strong><a href=\"https:\/\/motycs.it\/pt\/product\/teste-de-potencia-4wd\/\">Bancos de ensaio de pot\u00eancia Sport Devices<\/a><\/strong> <strong>est\u00e3o equipados com<\/strong>:<\/p>\n<ul>\n<li><a href=\"https:\/\/motycs.it\/pt\/product\/teste-de-potencia-4wd\/\"><strong>Rolos de 500 mm<\/strong><\/a>\u00a0&#8211; <strong>Velocidade m\u00e1xima <\/strong><strong>330 km\/h<\/strong><\/li>\n<li><a href=\"https:\/\/motycs.it\/pt\/product\/teste-de-potencia-4wd\/\"><strong>Rolos de 635 mm<\/strong><\/a> &#8211; <strong>Velocidade m\u00e1xima <\/strong><strong>419 km\/h<\/strong><\/li>\n<\/ul>\n<p>A <strong>o rolo de grande di\u00e2metro \u00e9 tamb\u00e9m de import\u00e2ncia fundamental<\/strong>, a fim de <strong>evitar a derrapagem dos pneus<\/strong> durante os ensaios em banco de ensaio (que gerariam perdas de leitura de energia),<\/p>\n<p>Este <strong>gra\u00e7as ao natural e \u00e9 mais largo<\/strong> <strong>superf\u00edcie de contacto entre o pneu e o rolo.<\/strong><\/p>\n<h6><strong>INDENTA\u00c7\u00c3O DO PNEU<\/strong><\/h6>\n<p class=\"p1\"><span class=\"s1\"><strong>Quanto menor for esta \u00e1rea de contacto <\/strong>entre o pneu e o rolo, <strong>quanto maior for a carga de cisalhamento <\/strong>('indenta\u00e7\u00e3o'), <strong>que actua na superf\u00edcie de contacto da banda de rodagem<\/strong>.<span class=\"Apple-converted-space\"> \u00a0<\/span><\/span><\/p>\n<p class=\"p1\"><span class=\"s1\">Estas for\u00e7as, <strong>n\u00e3o previsto <\/strong>na concep\u00e7\u00e3o normal dos pneus de estrada, <strong>deformam e tensionam continuamente as paredes laterais durante os ensaios em banco de ensaio. <\/strong><\/span><\/p>\n<p class=\"p1\"><span class=\"s1\">Combina\u00e7\u00e3o<strong> alta pot\u00eancia e alta velocidade, com rolos de pequeno di\u00e2metro<\/strong>, esta elevada deforma\u00e7\u00e3o (indenta\u00e7\u00e3o) <strong>pode sobreaquecer os pneus, <\/strong>com o risco de<strong> comprometer a sua integridade e os resultados dos testes<\/strong>.<\/span><\/p>\n<div id=\"attachment_1191\" style=\"width: 810px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/motycs.it\/wp-content\/uploads\/2022\/03\/alfarome-gt-awd-dyno-motycs-sportdevices.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1191\" class=\"wp-image-1191 size-full\" src=\"https:\/\/motycs.it\/wp-content\/uploads\/2022\/03\/alfarome-gt-awd-dyno-motycs-sportdevices.jpg\" alt=\"aparelhos desportivos banco de rolos dyno\" width=\"800\" height=\"800\" srcset=\"https:\/\/motycs.it\/wp-content\/uploads\/2022\/03\/alfarome-gt-awd-dyno-motycs-sportdevices.jpg 800w, https:\/\/motycs.it\/wp-content\/uploads\/2022\/03\/alfarome-gt-awd-dyno-motycs-sportdevices-300x300.jpg 300w, https:\/\/motycs.it\/wp-content\/uploads\/2022\/03\/alfarome-gt-awd-dyno-motycs-sportdevices-150x150.jpg 150w, https:\/\/motycs.it\/wp-content\/uploads\/2022\/03\/alfarome-gt-awd-dyno-motycs-sportdevices-768x768.jpg 768w, https:\/\/motycs.it\/wp-content\/uploads\/2022\/03\/alfarome-gt-awd-dyno-motycs-sportdevices-600x600.jpg 600w, https:\/\/motycs.it\/wp-content\/uploads\/2022\/03\/alfarome-gt-awd-dyno-motycs-sportdevices-100x100.jpg 100w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><p id=\"caption-attachment-1191\" class=\"wp-caption-text\">Dispositivo de ensaio de rolo \u00fanico<\/p><\/div>\n<h4 class=\"p1\"><span class=\"s1\">BANCOS DE ENSAIO DE UM ROLO<\/span><\/h4>\n<p class=\"p1\"><span class=\"s1\"><strong><a href=\"https:\/\/motycs.it\/pt\/product\/teste-de-potencia-4wd\/\">Bancos de ensaio de um rolo<\/a><\/strong>, \u00e0 medida que a pot\u00eancia do ve\u00edculo aumenta, <strong>tornaram-se ao longo do tempo a solu\u00e7\u00e3o mais popular entre todos os diferentes fabricantes <\/strong>de bancos de ensaio de pot\u00eancia.<\/span><\/p>\n<p class=\"p1\"><span class=\"s1\">Como podemos ver na an\u00e1lise abaixo, os pneus encontram o seu <strong>condi\u00e7\u00f5es \u00f3ptimas de funcionamento na estrada<\/strong> (Fig. A).<\/span><\/p>\n<p><span class=\"s1\">Observando as simula\u00e7\u00f5es abaixo (Fig. B e C) <strong>podemos observar como no di\u00e2metro maior do rolo, <\/strong>corresponde a uma menor \"indenta\u00e7\u00e3o\" e, por conseguinte<strong>\u00a0menos stress <\/strong>(Fig. B) <strong>para pneus<\/strong>, obtendo tamb\u00e9m:<\/span><\/p>\n<ul>\n<li><span class=\"s1\"><strong>Maior ader\u00eancia <\/strong>(maior \u00e1rea de contacto)<\/span><\/li>\n<li><span class=\"s1\"><strong>Melhoria da manuten\u00e7\u00e3o de condi\u00e7\u00f5es de funcionamento constantes<\/strong>, durante o ensaio<\/span><\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1538 size-full\" src=\"https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/tyre-deformation-motycs-single-roller-dyno.jpg\" alt=\"Bancos de ensaio de pot\u00eancia com um rolo\" width=\"800\" height=\"315\" srcset=\"https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/tyre-deformation-motycs-single-roller-dyno.jpg 800w, https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/tyre-deformation-motycs-single-roller-dyno-300x118.jpg 300w, https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/tyre-deformation-motycs-single-roller-dyno-768x302.jpg 768w, https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/tyre-deformation-motycs-single-roller-dyno-600x236.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<h5><\/h5>\n<h4 class=\"p1\"><span class=\"s1\">BANCOS DE ENSAIO DE ROLOS DUPLOS<\/span><\/h4>\n<p class=\"p1\"><span class=\"s1\">Originalmente <strong>nascido para as necessidades de diagn\u00f3stico<\/strong> (numa altura da hist\u00f3ria em que os ve\u00edculos tinham pot\u00eancias muito inferiores \u00e0s actuais) <strong>oferecia uma boa estabilidade do ve\u00edculo em ensaio, mas sacrificava a reten\u00e7\u00e3o dos pneus<\/strong>.<\/span><\/p>\n<p class=\"p1\"><span class=\"s1\">Na altura, esta escolha de design foi tamb\u00e9m justificada pela <strong>fins para os quais o banco de rolos duplos foi originalmente concebido; <\/strong>ou a sua utiliza\u00e7\u00e3o<strong> nos centros de diagn\u00f3stico <\/strong>que estavam apenas a fazer <strong>testes de pot\u00eancia curtos e r\u00e1pidos.<\/strong><\/span><\/p>\n<h6><strong>CONDI\u00c7\u00d5ES DE ELEVADA TENS\u00c3O PARA OS PNEUS<\/strong><\/h6>\n<p class=\"p1\"><span class=\"s1\">Como se pode ver nas figuras abaixo (Fig. D, E), o <strong>banco de ensaio para autom\u00f3veis ou motociclos com rolos duplos<\/strong> (ligados ou n\u00e3o por uma correia) <strong>apresentar <\/strong>de qualquer forma<strong> pneus em condi\u00e7\u00f5es de elevada tens\u00e3o, tamb\u00e9m devido \u00e0 elevada indenta\u00e7\u00e3o <\/strong>devido \u00e0<strong>impossibilidade de utilizar rolos de grande di\u00e2metro, impl\u00edcita nestas solu\u00e7\u00f5es<\/strong>.<\/span><\/p>\n<p><a href=\"https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/tyre-deformation-motycs-double-roller-dyno.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1537 size-full\" src=\"https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/tyre-deformation-motycs-double-roller-dyno.jpg\" alt=\"Bancos de ensaio de rolos duplos\" width=\"800\" height=\"315\" srcset=\"https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/tyre-deformation-motycs-double-roller-dyno.jpg 800w, https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/tyre-deformation-motycs-double-roller-dyno-300x118.jpg 300w, https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/tyre-deformation-motycs-double-roller-dyno-768x302.jpg 768w, https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/tyre-deformation-motycs-double-roller-dyno-600x236.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<h6><strong>VE\u00cdCULOS MODERNOS CADA VEZ MAIS POTENTES<\/strong><\/h6>\n<p class=\"p1\"><span class=\"s1\">Estas condi\u00e7\u00f5es de stress <strong>tornam-se cada vez mais evidentes \u00e0 medida que a pot\u00eancia e o bin\u00e1rio dos ve\u00edculos aumentam.\u00a0 <\/strong><\/span><\/p>\n<p class=\"p1\">Pensamos, portanto, no <strong>ve\u00edculos modernos endot\u00e9rmicos, h\u00edbridos ou el\u00e9ctricos, cujo bin\u00e1rio e pot\u00eancia aumentaram de forma desproporcionada nos \u00faltimos anos<\/strong>, alcan\u00e7ando <strong>mais do dobro dos n\u00edveis<\/strong> <strong>em compara\u00e7\u00e3o com as compet\u00eancias para as quais este tipo de banco <\/strong>rolos duplos <strong>foi inicialmente colocado no mercado <\/strong>(1980s).<\/p>\n<p><span class=\"s1\">Tipicamente, <strong>na realiza\u00e7\u00e3o de ensaios a m\u00e9dio\/longo prazo, o aquecimento dos pneus \u00e9 suscept\u00edvel de afectar os resultados<\/strong>; devido a:<\/span><\/p>\n<ul>\n<li><span class=\"s1\"><strong>diferente ader\u00eancia no contacto pneu\/rolo a diferentes temperaturas<\/strong> (causa de <strong>dissipa\u00e7\u00e3o de energia <\/strong>e a varia\u00e7\u00e3o das leituras de pot\u00eancia das rodas e a <a href=\"https:\/\/motycs.it\/pt\/a-prova-de-bancos-com-dissipacao-de-energia\/\"><strong>pot\u00eancia<\/strong> <strong>dissipado<\/strong>.<\/a><\/span><\/li>\n<li><span class=\"s1\"><strong> varia\u00e7\u00f5es do di\u00e2metro dos pneus<\/strong>, que podem ocorrer devido \u00e0 sua <strong>aumento da press\u00e3o interna<\/strong>\u00a0 com poss\u00edveis diferen\u00e7as nas leituras de velocidade do motor.<\/span><\/li>\n<\/ul>\n<h6><strong>DIFERENTES VELOCIDADES DAS RODAS E DOS ROLOS<\/strong><\/h6>\n<p>Mais <strong>criticidade dos bancos de rolos duplos<\/strong> \u00e9 representado pelo <strong>diferentes velocidades de rota\u00e7\u00e3o dos pneus e rolos. <\/strong><\/p>\n<p>Durante o per\u00edodo de acelera\u00e7\u00e3o, <strong>os pneus tendem naturalmente a querer \"subir\" no rolo dianteiro <\/strong>(Fig. D)<strong>, deforma\u00e7\u00e3o ainda maior <\/strong>devido \u00e0 desloca\u00e7\u00e3o e \u00e0 diferente distribui\u00e7\u00e3o da massa do ve\u00edculo<strong>. <\/strong><\/p>\n<p>Isto tamb\u00e9m envolve o<strong> desloca\u00e7\u00e3o dos centros de rota\u00e7\u00e3o das rodas e rolos <\/strong>(e di\u00e2metro relativo do rolamento),<strong> modificar as velocidades de rota\u00e7\u00e3o em conformidade <\/strong>dos componentes individuais envolvidos (rolo dianteiro\/rolo traseiro\/pneu).<\/p>\n<p>Para <strong>Para compreender esta din\u00e2mica, basta olhar para as figuras D e E abaixo; as dist\u00e2ncias dos eixos de rota\u00e7\u00e3o<\/strong>\u00a0do centro de rota\u00e7\u00e3o do pneu, <strong>mudar \u00e0 medida que a posi\u00e7\u00e3o do eixo do ve\u00edculo muda<\/strong>.<\/p>\n<p><a href=\"https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/tyre-deformation-motycs-double-roller-dyno.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1537 size-full\" src=\"https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/tyre-deformation-motycs-double-roller-dyno.jpg\" alt=\"Bancos de ensaio de rolos duplos - deforma\u00e7\u00e3o de pneus\" width=\"800\" height=\"315\" srcset=\"https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/tyre-deformation-motycs-double-roller-dyno.jpg 800w, https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/tyre-deformation-motycs-double-roller-dyno-300x118.jpg 300w, https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/tyre-deformation-motycs-double-roller-dyno-768x302.jpg 768w, https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/tyre-deformation-motycs-double-roller-dyno-600x236.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<p><strong>Isto cria duas condi\u00e7\u00f5es de funcionamento poss\u00edveis diferentes,<\/strong><strong>\u00a0<\/strong>dependendo do <strong>presen\u00e7a<\/strong><strong> ou n\u00e3o<\/strong><strong> um constrangimento mec\u00e2nico entre os rolos dianteiro e traseiro<\/strong>:<\/p>\n<ul>\n<li>Quando <strong>N\u00c3O ligados entre si <\/strong>(Fig. D), o rolo traseiro roda a uma velocidade de <strong>maior velocidade de rota\u00e7\u00e3o<\/strong>, condi\u00e7\u00e3o que pode causar deslizamento e afectar negativamente os ensaios<\/li>\n<li>Quando <strong>unidos <\/strong>(Fig. E), o rolo traseiro transporta um <strong>efeito de fric\u00e7\u00e3o na superf\u00edcie do pneu, devido \u00e0 sua menor velocidade de rota\u00e7\u00e3o neste caso;<\/strong> aumentando assim o desgaste dos pneus e a temperatura de funcionamento.<\/li>\n<\/ul>\n<div id=\"attachment_1569\" style=\"width: 810px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/banco-2-doppio-rullo-motycs-dyno.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1569\" class=\"wp-image-1569 size-full\" src=\"https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/banco-2-doppio-rullo-motycs-dyno.jpg\" alt=\"\" width=\"800\" height=\"800\" srcset=\"https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/banco-2-doppio-rullo-motycs-dyno.jpg 800w, https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/banco-2-doppio-rullo-motycs-dyno-300x300.jpg 300w, https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/banco-2-doppio-rullo-motycs-dyno-150x150.jpg 150w, https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/banco-2-doppio-rullo-motycs-dyno-768x768.jpg 768w, https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/banco-2-doppio-rullo-motycs-dyno-600x600.jpg 600w, https:\/\/motycs.it\/wp-content\/uploads\/2023\/05\/banco-2-doppio-rullo-motycs-dyno-100x100.jpg 100w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><p id=\"caption-attachment-1569\" class=\"wp-caption-text\">Banco de ensaio de pot\u00eancia de rolo duplo<\/p><\/div>\n<h6>INSIGHTS<\/h6>\n<ul>\n<li><a href=\"https:\/\/motycs.it\/pt\/os-bancos-historicos-provam-o-poder-dos-rolos\/\"><strong>Hist\u00f3ria dos bancos de ensaio de rolos<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/motycs.it\/pt\/a-prova-de-bancos-com-dissipacao-de-energia\/\"><strong>O que \u00e9 a dissipa\u00e7\u00e3o de energia?<\/strong><\/a><\/li>\n<li><strong><a href=\"https:\/\/motycs.it\/pt\/bancos-de-ensaio-4wd\/\">Vantagens dos bancos de ensaio 4\u00d74 com eixos ligados<\/a><\/strong><\/li>\n<li><a href=\"https:\/\/motycs.it\/pt\/factores-correccao-poder\/\"><b>Factores de correc\u00e7\u00e3o de pot\u00eancia DIN, CE, SAE...<\/b><\/a><\/li>\n<li><strong><a href=\"https:\/\/motycs.it\/pt\/sistemas-homologos\/\">Bancos de homologa\u00e7\u00e3o e de fim de linha<\/a><\/strong> dom\u00ednios de aplica\u00e7\u00e3o<\/li>\n<li><strong><a href=\"https:\/\/motycs.it\/pt\/contactos\/\">Contactar-nos:<\/a> para mais informa\u00e7\u00f5es<\/strong><\/li>\n<\/ul>\n<h6>OS NOSSOS PRODUTOS E SERVI\u00c7OS<\/h6>\n<ul>\n<li><a href=\"https:\/\/motycs.it\/pt\/product-category\/banchi-prova-potenza\/\"><strong>A nossa gama de bancos de ensaio<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/motycs.it\/pt\/product-category\/sistemi-di-controllo\/\"><strong>Sistemas de controlo e aquisi\u00e7\u00e3o<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/motycs.it\/pt\/product\/saleiros\/\"><strong>Salas de ensaio de motores insonorizadas<\/strong><\/a><\/li>\n<li><strong><a href=\"https:\/\/motycs.it\/pt\/product\/ventilacao\/\">Conjuntos de ventoinhas de arrefecimento do motor<\/a><\/strong><\/li>\n<li><a href=\"https:\/\/motycs.it\/pt\/product\/extraccao-de-fumo\/\"><strong>Sistemas de extrac\u00e7\u00e3o de fumos<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/motycs.it\/pt\/servicos-motores-de-ensaio\/\"><strong>Servi\u00e7os de ensaio de motores e ve\u00edculos<\/strong><\/a><\/li>\n<\/ul>\n<p><a href=\"https:\/\/motycs.it\/pt\/contactos\/\"><strong>Contacte-nos para mais informa\u00e7\u00f5es<\/strong><\/a><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"vc_row-full-width vc_clearfix\"><\/div>","protected":false},"excerpt":{"rendered":"Teoria A IMPORT\u00c2NCIA DO DI\u00c2METRO DOS ROLOS Nos bancos de ensaio de pot\u00eancia, o di\u00e2metro dos rolos \u00e9 um dos principais factores limitantes da pot\u00eancia mensur\u00e1vel. Este limite \u00e9 imposto pela velocidade m\u00e1xima que pode ser atingida no banco de ensaio, que \u00e9 determinada por dois factores: Di\u00e2metro externo dos rolos do banco de ensaio Velocidade m\u00e1xima em rpm dos rolamentos do banco de ensaio [...].","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1536","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>banchi prova mono rullo e bi rullo<\/title>\n<meta name=\"description\" content=\"Scopri vantaggi e svantaggi dei banchi prova potenza con rullo singolo o con due rulli. 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