{"id":1672,"date":"2017-01-16T19:00:33","date_gmt":"2017-01-16T19:00:33","guid":{"rendered":"https:\/\/www.onefran.com\/?p=1672\/"},"modified":"2017-03-14T12:19:24","modified_gmt":"2017-03-14T12:19:24","slug":"quest-ce-quune-transmission","status":"publish","type":"post","link":"https:\/\/www.mistertransmission.com\/fr\/quest-ce-quune-transmission\/","title":{"rendered":"Qu&#8217;est-ce qu&#8217;une transmission?"},"content":{"rendered":"<p>La transmission est un composant complexe, probablement celui que l\u2019on comprend le moins. Cela est en partie imputable au fait que l\u2019on confond notamment la transmission elle-m\u00eame avec la cha\u00eene cin\u00e9matique. Essayons de clarifier le tout.<\/p>\n<div id=\"LEAP_Content\" class=\"dpb\">\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-1109 alignright\" src=\"https:\/\/www.mistertransmission.com\/wp-content\/uploads\/2017\/01\/iStock_000018923599Small.jpg\" alt=\"\" width=\"300\" height=\"225\" \/>La transmission comprend la bo\u00eete de vitesses, l&#8217;arbre de transmission, les ponts moteurs et les roues. En termes simples, elle agit en parall\u00e8le avec le moteur pour faire tourner les roues. La cha\u00eene cin\u00e9matique est un composant essentiel de tout v\u00e9hicule et la transmission est une partie int\u00e9grante de la cha\u00eene cin\u00e9matique.<\/p>\n<h4 class=\"class6\">La transmission et la bo\u00eete de vitesses<\/h4>\n<p>La transmission et la bo\u00eete de vitesses sont, en fait, deux notions bien distinctes. La fonction principale de la bo\u00eete de vitesses est semblable \u00e0 celle d&#8217;une cha\u00eene de bicyclette : elle permet au moteur de tourner au m\u00eame rythme que les roues, peu importe la vitesse du v\u00e9hicule. La transmission est compos\u00e9e de tout ce qui alimente la bo\u00eete de vitesses pour faire avancer le v\u00e9hicule. Sa fonction principale est de transmettre la puissance du moteur aux roues motrices du v\u00e9hicule par l&#8217;interm\u00e9diaire de la transmission pour en contr\u00f4ler le couple. Le terme \u00ab couple \u00bb d\u00e9signe la force de rotation.<\/p>\n<h4 class=\"class6\">Les parties de la transmission<\/h4>\n<p>La transmission comprend l\u2019ensemble des composants qui acheminent la puissance de la transmission aux roues pour faire avancer le v\u00e9hicule. Ces composants comprennent l&#8217;arbre de transmission, les joints homocin\u00e9tiques, le diff\u00e9rentiel, les arbres de roues motrices et les joints de cardans.<\/p>\n<ul>\n<li>Un arbre de transmission est un long tube d&#8217;acier qui est reli\u00e9 \u00e0 la transmission d&#8217;un v\u00e9hicule \u00e0 un bout, puis aux roues \u00e0 l&#8217;autre. Il transmet la puissance m\u00e9canique de la transmission aux autres composants du v\u00e9hicule.<\/li>\n<li>Un joint de cardan, ou joint universel, est un pivot flexible qui transmet la puissance \u00e0 l&#8217;arbre de transmission tout en lui permettant diff\u00e9rents angles.<\/li>\n<li>Les joints homocin\u00e9tiques font partie de l&#8217;arbre de transmission. Il s&#8217;agit de joints con\u00e7us pour se courber dans n&#8217;importe quel sens tout en continuant de faire tourner les roues motrices \u00e0 vitesse constante.<\/li>\n<li>Le diff\u00e9rentiel est l&#8217;endroit o\u00f9 la puissance fait un dernier arr\u00eat avant de faire tourner les roues. (voir \u00ab\u00a0<a href=\"https:\/\/www.mistertransmission.com\/how-differentials-work\/\">Comment fonctionne le diff\u00e9rentiel<\/a>\u00a0\u00bb).<\/li>\n<li class=\"last\">Les arbres de roues motrices sont constitu\u00e9s d&#8217;un arbre tournant de chaque c\u00f4t\u00e9 du diff\u00e9rentiel et ont pour r\u00f4le de transmettre la puissance provenant du m\u00e9canisme d&#8217;entra\u00eenement aux roues motrices.<\/li>\n<\/ul>\n<h4 class=\"class6\">Transmission, ligne d\u2019arbres de transmission et groupe motopropulseur<\/h4>\n<p>Les techniciens utilisent parfois les termes ligne d\u2019arbres de transmission, transmission ou groupe motopropulseur sans faire de distinction entre eux. Cela peut causer une certaine confusion; voici donc une br\u00e8ve description de ces divers syst\u00e8mes.<\/p>\n<p>Le\u00a0<strong>groupe motopropulseur<\/strong>\u00a0d&#8217;un v\u00e9hicule consiste en tout ce qui fait bouger ce dernier. Il comprend le moteur, la transmission et toutes les pi\u00e8ces qui permettent \u00e0 la puissance de se rendre aux roues.<\/p>\n<p>La\u00a0<strong>transmission\u00a0<\/strong>elle-m\u00eame est constitu\u00e9e de la bo\u00eete de vitesse et de la ligne d\u2019arbres de transmission, soit toutes les pi\u00e8ces du groupe motopropulseur \u00e0 l\u2019exception du moteur.<\/p>\n<p>La\u00a0<strong>ligne d\u2019arbres de transmission, pour sa part,\u00a0<\/strong>comprend toutes les parties du v\u00e9hicule motoris\u00e9 qui se trouvent apr\u00e8s la bo\u00eete de vitesses, soit l\u2019arbre de transmission, les ponts moteurs, les diff\u00e9rentiels et les roues.<\/p>\n<p>Les techniciens de Monsieur Transmission sont tous des sp\u00e9cialistes agr\u00e9\u00e9s de la cha\u00eene cin\u00e9matique et de la transmission qui sauront assurer un service professionnel pour tous les probl\u00e8mes li\u00e9s \u00e0 ces syst\u00e8mes dans tous les v\u00e9hicules modernes.<\/p>\n<p><a href=\"https:\/\/www.mistertransmission.com\/locations\/\">Vous aimeriez en apprendre davantage?<br \/>\nVisitez un de nos emplacements!<\/a><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>La transmission est un composant complexe, probablement celui que l\u2019on comprend le moins. Cela est en partie imputable au fait que l\u2019on confond notamment la transmission elle-m\u00eame avec la cha\u00eene cin\u00e9matique. Essayons de clarifier le tout. La transmission comprend la [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"ngg_post_thumbnail":0,"footnotes":""},"categories":[78,77,2],"tags":[12],"class_list":["post-1672","post","type-post","status-publish","format-standard","hentry","category-learn-about-transmissions-ecole-de-transmission","category-ecole-de-transmission","category-non-classifiee","tag-transmission-notions-de-base","postgroup-articles-fr"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Qu&#039;est-ce qu&#039;un Drivetrain | Monsieur Transmission<\/title>\n<meta name=\"description\" content=\"What&#039;s the difference between the drivetrain, the powertrain and the driveline? 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