{"id":7157,"date":"2020-07-16T16:04:38","date_gmt":"2020-07-16T20:04:38","guid":{"rendered":"https:\/\/techlinkfrench.mynetworkcontent.com\/?p=7157"},"modified":"2020-09-16T16:20:19","modified_gmt":"2020-09-16T20:20:19","slug":"tuyau-dechappement-forme-pour-eviter-les-contacts-bas","status":"publish","type":"post","link":"https:\/\/gm-techlinkfrench.com\/?p=7157","title":{"rendered":"Tuyau d&#8217;\u00e9chappement form\u00e9 pour \u00e9viter les contacts bas"},"content":{"rendered":"<p>Un coup d&#8217;\u0153il rapide \u00e0 la section transversale du tuyau d&#8217;\u00e9chappement des mod\u00e8les Silverado et Sierra 2019-2020 \u00e9quip\u00e9s du moteur V6 ou V8 r\u00e9v\u00e8le que le tuyau n&#8217;est pas parfaitement rond comme les autres parties du tuyau (fig. 27). La forme unique du tuyau d&#8217;\u00e9chappement est un choix de conception. Les d\u00e9formations ou la forme du tuyau n&#8217;indique pas que le tuyau est endommag\u00e9.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-13483\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/07\/F27-exhaust-3.png\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2020\/07\/F27-exhaust-3.png 740w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2020\/07\/F27-exhaust-3-300x194.png 300w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2020\/07\/F27-exhaust-3-85x55.png 85w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2020\/07\/F27-exhaust-3-200x130.png 200w\" alt=\"\" width=\"740\" height=\"479\" \/><b>Fig. 27<\/b><\/p>\n<p>&nbsp;<\/p>\n<p>Le tuyau d&#8217;\u00e9chappement a cette forme distincte pour faire en sorte qu&#8217;il soit plus haut du sol que les autres \u00e9l\u00e9ments de ch\u00e2ssis adjacents (fig. 28). Gr\u00e2ce \u00e0 sa forme unique, il n&#8217;est pas la partie la plus basse du v\u00e9hicule et est ainsi prot\u00e9g\u00e9 par le ch\u00e2ssis contre les contacts possibles aux endroits o\u00f9 le d\u00e9gagement au sol est faible. La forme permet donc au tuyau d&#8217;\u00e9chappement d&#8217;\u00e9viter d&#8217;\u00eatre heurt\u00e9e par les objets qui passent sous le v\u00e9hicule. En situation de conduite hors route, par exemple, un objet pourrait d&#8217;abord heurter le ch\u00e2ssis.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-13484\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/07\/F28-exhaust-2.png\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2020\/07\/F28-exhaust-2.png 740w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2020\/07\/F28-exhaust-2-300x194.png 300w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2020\/07\/F28-exhaust-2-85x55.png 85w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2020\/07\/F28-exhaust-2-200x130.png 200w\" alt=\"\" width=\"740\" height=\"479\" \/><b>Fig. 28<\/b><\/p>\n<p>&nbsp;<\/p>\n<p>La partie transversale du tuyau d&#8217;\u00e9chappement est hydroform\u00e9e, ou form\u00e9e par pression hydraulique, pour obtenir une forme ovale qui a la m\u00eame section transversale que la partie ronde du tuyau.<\/p>\n<p>La forme du tuyau n&#8217;engendre aucune restriction pour le d\u00e9bit et n&#8217;a pas d&#8217;incidence sur le rendement du moteur (fig. 29).<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-13485\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/07\/F29-exhaust-4.png\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2020\/07\/F29-exhaust-4.png 740w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2020\/07\/F29-exhaust-4-300x194.png 300w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2020\/07\/F29-exhaust-4-85x55.png 85w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2020\/07\/F29-exhaust-4-200x130.png 200w\" alt=\"\" width=\"740\" height=\"479\" \/><b>Fig. 29<\/b><\/p>\n<p>&nbsp;<\/p>\n<p><em>&#8211; Merci \u00e0 David MacGillis<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Un coup d&#8217;\u0153il rapide \u00e0 la section transversale du tuyau d&#8217;\u00e9chappement des mod\u00e8les Silverado et Sierra 2019-2020 \u00e9quip\u00e9s du moteur V6 ou V8 r\u00e9v\u00e8le que le tuyau n&#8217;est pas parfaitement [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-7157","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/posts\/7157","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7157"}],"version-history":[{"count":1,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/posts\/7157\/revisions"}],"predecessor-version":[{"id":7158,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/posts\/7157\/revisions\/7158"}],"wp:attachment":[{"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7157"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7157"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7157"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}