{"id":47931,"date":"2019-11-07T09:21:26","date_gmt":"2019-11-07T08:21:26","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/o-que-e-o-ciclo-diesel-real-e-ideal-definicao\/"},"modified":"2020-01-26T09:21:13","modified_gmt":"2020-01-26T08:21:13","slug":"o-que-e-o-ciclo-diesel-real-e-ideal-definicao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-o-ciclo-diesel-real-e-ideal-definicao\/","title":{"rendered":"O que \u00e9 o Ciclo Diesel Real e Ideal &#8211; Defini\u00e7\u00e3o"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-clearfix\">Ciclo Diesel Real e Ideal.\u00a0Neste artigo, \u00e9 mostrado um ciclo Diesel ideal, no qual existem muitas suposi\u00e7\u00f5es diferentes do ciclo Diesel real.\u00a0Engenharia T\u00e9rmica<\/div>\n<\/div>\n<div class=\"su-divider su-divider-style-dotted\"><\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<div class=\"su-spacer\"><\/div>\n<h2>Compara\u00e7\u00e3o de ciclos diesel reais e ideais<\/h2>\n<p>&amp; nbsp;<\/p>\n<figure id=\"attachment_17644\" class=\"wp-caption alignright\" aria-describedby=\"caption-attachment-17644\"><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Diesel-cycle-pV-Diagram.png\"><img loading=\"lazy\" class=\"size-medium wp-image-17644 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Diesel-cycle-pV-Diagram-300x280.png\" alt=\"Ciclo diesel - diagrama de pV\" width=\"300\" height=\"280\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Diesel-cycle-pV-Diagram-300x280.png\" \/><\/a><figcaption id=\"caption-attachment-17644\" class=\"wp-caption-text\">Ciclo diesel &#8211; diagrama de pV<\/figcaption><\/figure>\n<p>Neste artigo, \u00e9 mostrado um\u00a0<strong>ciclo Diesel ideal,<\/strong>\u00a0no qual existem muitas suposi\u00e7\u00f5es diferentes do\u00a0<strong>ciclo Diesel real<\/strong>\u00a0.\u00a0As principais diferen\u00e7as entre o motor Diesel real e ideal aparecem na figura.\u00a0Na realidade, o ciclo ideal n\u00e3o ocorre e h\u00e1 muitas perdas associadas a cada processo.\u00a0Para um ciclo real, a forma do diagrama de pV \u00e9 semelhante ao ideal, mas a \u00e1rea (trabalho) delimitada pelo diagrama de pV \u00e9 sempre menor que o valor ideal.\u00a0O ciclo Diesel ideal \u00e9 baseado nas seguintes premissas:<\/p>\n<ul>\n<li><strong>Ciclo fechado<\/strong>\u00a0: A maior diferen\u00e7a entre os dois diagramas \u00e9 a simplifica\u00e7\u00e3o dos movimentos de admiss\u00e3o e escape no ciclo ideal.\u00a0No curso de escape, o calor Q\u00a0<sub>out<\/sub>\u00a0\u00e9 ejetado para o ambiente (em um motor real, o g\u00e1s sai do motor e \u00e9 substitu\u00eddo por uma nova mistura de ar e combust\u00edvel).<\/li>\n<li><strong>Adi\u00e7\u00e3o de calor isob\u00e1rico<\/strong>\u00a0.\u00a0Em motores reais, a adi\u00e7\u00e3o de calor nunca \u00e9 isob\u00e1rica.<\/li>\n<li><strong>Sem transfer\u00eancia de calor<\/strong>\n<ul>\n<li>Compress\u00e3o &#8211; O g\u00e1s \u00e9 comprimido adiabaticamente do estado 1 ao estado 2. Nos motores reais, sempre existem algumas inefici\u00eancias que reduzem a efici\u00eancia t\u00e9rmica.<\/li>\n<li>Expans\u00e3o.\u00a0O g\u00e1s se expande adiabaticamente do estado 3 para o estado 4.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Combust\u00e3o completa<\/strong>\u00a0da mistura.<\/li>\n<li><strong>Nenhum trabalho de bombeamento<\/strong>\u00a0.\u00a0Trabalho de bombeamento \u00e9 a diferen\u00e7a entre o trabalho realizado durante o golpe de escape e o trabalho realizado durante o golpe de admiss\u00e3o.\u00a0Nos ciclos reais, h\u00e1 uma diferen\u00e7a de press\u00e3o entre as press\u00f5es de exaust\u00e3o e de entrada.<\/li>\n<li><strong>Sem perda de purga<\/strong>\u00a0.\u00a0A perda de purga \u00e9 causada pela abertura precoce das v\u00e1lvulas de escape.\u00a0Isso resulta em perda de produ\u00e7\u00e3o durante o curso de expans\u00e3o.<\/li>\n<li><strong>Sem perda de impacto<\/strong>\u00a0.\u00a0A perda soprada \u00e9 causada pelo vazamento de gases comprimidos atrav\u00e9s de an\u00e9is de pist\u00e3o e outras fendas.<\/li>\n<li><strong>Sem perdas por atrito<\/strong>\u00a0.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<p><span>Essas suposi\u00e7\u00f5es e perdas simplificadoras levam ao fato de que a \u00e1rea fechada (trabalho) do diagrama de pV para um motor real \u00e9 significativamente menor que o tamanho da \u00e1rea (trabalho) envolvida pelo diagrama de pV do ciclo ideal.\u00a0Em outras palavras, o ciclo ideal do motor superestimar\u00e1 o trabalho l\u00edquido e, se os motores funcionarem na mesma velocidade, maior pot\u00eancia produzida pelo motor real em cerca de 20% (da mesma forma que no caso do motor Otto).<\/span><\/p>\n<p><a href=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Diesel-cycle-Diesel-engine.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-17643 lazy-loaded\" src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Diesel-cycle-Diesel-engine.png\" alt=\"Ciclo Diesel - Motor Diesel\" width=\"534\" height=\"488\" data-lazy-type=\"image\" data-src=\"https:\/\/thermal-engineering.org\/wp-content\/uploads\/2019\/05\/Diesel-cycle-Diesel-engine.png\" \/><\/a><\/p>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights lgc-first lgc-last\">\n<p>&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.<\/p>\n<p>Este artigo \u00e9 baseado na tradu\u00e7\u00e3o autom\u00e1tica do artigo original em ingl\u00eas. Para mais informa\u00e7\u00f5es, consulte o artigo em ingl\u00eas. Voc\u00ea pode nos ajudar. Se voc\u00ea deseja corrigir a tradu\u00e7\u00e3o, envie-a para: translations@nuclear-power.com ou preencha o formul\u00e1rio de tradu\u00e7\u00e3o on-line. Agradecemos sua ajuda, atualizaremos a tradu\u00e7\u00e3o o mais r\u00e1pido poss\u00edvel. Obrigado.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Ciclo Diesel Real e Ideal.\u00a0Neste artigo, \u00e9 mostrado um ciclo Diesel ideal, no qual existem muitas suposi\u00e7\u00f5es diferentes do ciclo Diesel real.\u00a0Engenharia T\u00e9rmica Compara\u00e7\u00e3o de ciclos diesel reais e ideais &amp; nbsp; Ciclo diesel &#8211; diagrama de pV Neste artigo, \u00e9 mostrado um\u00a0ciclo Diesel ideal,\u00a0no qual existem muitas suposi\u00e7\u00f5es diferentes do\u00a0ciclo Diesel real\u00a0.\u00a0As principais diferen\u00e7as &#8230; <a title=\"O que \u00e9 o Ciclo Diesel Real e Ideal &#8211; Defini\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/www.thermal-engineering.org\/pt-br\/o-que-e-o-ciclo-diesel-real-e-ideal-definicao\/\" aria-label=\"More on O que \u00e9 o Ciclo Diesel Real e Ideal &#8211; Defini\u00e7\u00e3o\">Ler mais<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[14],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>O que \u00e9 o Ciclo Diesel Real e Ideal - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"Ciclo Diesel Real e Ideal. 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