{"id":2464,"date":"2020-08-20T11:58:19","date_gmt":"2020-08-20T11:58:19","guid":{"rendered":"https:\/\/www.motointegrator.de\/blog\/test-fr\/\/?p=2464"},"modified":"2025-12-12T11:43:21","modified_gmt":"2025-12-12T10:43:21","slug":"role-du-liquide-de-frein","status":"publish","type":"post","link":"https:\/\/www.motointegrator.fr\/blog\/role-du-liquide-de-frein\/","title":{"rendered":"R\u00f4le du liquide de frein"},"content":{"rendered":"<strong>Un bon liquide de frein garantit un freinage en toute s\u00e9curit\u00e9<\/strong>\r\n\r\nLa plupart des v\u00e9hicules automobiles modernes sont \u00e9quip\u00e9s d&rsquo;un syst\u00e8me de freinage hydraulique. Le liquide de frein y fait office de fluide hydraulique. Il transmet la force exerc\u00e9e par le conducteur sur la p\u00e9dale de frein aux <a href=\"https:\/\/www.motointegrator.fr\/produits\/freins-a-tambour-11402\/\">freins \u00e0 tambour<\/a> ou aux <a href=\"https:\/\/www.motointegrator.fr\/produits\/freins-a-disque-11401\/\">freins \u00e0 disque<\/a>. En raison de cette fonction importante et d\u00e9terminante pour la s\u00e9curit\u00e9, les fabricants comme ATE, TRW ou Bosch optimisent les propri\u00e9t\u00e9s de leurs liquides de frein. Ainsi, le liquide doit \u00eatre non corrosif pour les composants du syst\u00e8me de freinage et non agressif pour leurs joints en caoutchouc. Gr\u00e2ce \u00e0 une viscosit\u00e9 adapt\u00e9e, le liquide favorise notamment le fonctionnement des syst\u00e8mes d&rsquo;assistance \u00e0 la conduite tels que l&rsquo;ESP ou l&rsquo;ABS. Enfin, le liquide de frein doit \u00eatre r\u00e9sistant \u00e0 la temp\u00e9rature.\r\n<h2>La s\u00e9curit\u00e9 gr\u00e2ce \u00e0 la r\u00e9sistance \u00e0 la temp\u00e9rature<\/h2>\r\nLes <a href=\"https:\/\/www.motointegrator.fr\/produits\/liquides-de-frein-304\/\">liquides de frein<\/a> transmettent de fortes pressions et, conform\u00e9ment aux lois de la thermodynamique, l&rsquo;\u00e9nergie de compression chauffe le liquide de frein. Si le liquide de frein se r\u00e9chauffe au-del\u00e0 de son point d&rsquo;\u00e9bullition, des bulles de gaz se forment dans le syst\u00e8me de freinage. Ces bulles agissent alors comme des coussins d&rsquo;air dans le syst\u00e8me de freinage, ce qui emp\u00eache la transmission directe de la force entre le ma\u00eetre-cylindre et le frein de roue. Cela r\u00e9duit \u00e0 son tour l&rsquo;efficacit\u00e9 du freinage et peut m\u00eame entra\u00eener une perte totale de capacit\u00e9 de freinage. Pour \u00e9viter cela, le point d&rsquo;\u00e9bullition \u00e0 sec du liquide de frein quasi anhydre se situe entre 240 et 280 degr\u00e9s Celsius.\r\n\r\nLes liquides de frein ont toutefois des propri\u00e9t\u00e9s hygroscopiques. Ils ont donc tendance \u00e0 absorber l&rsquo;eau de l&rsquo;air ambiant au fil du temps, surtout \u00e0 travers les flexibles de frein dont la porosit\u00e9 est toujours minimale. L&rsquo;eau contenue dans le liquide de frein abaisse son point d&rsquo;\u00e9bullition, lequel se situe entre 140 et 180 degr\u00e9s Celsius pour la plupart des liquides de frein disponibles dans le commerce. Tant que la teneur en eau d&rsquo;un liquide de frein ne d\u00e9passe pas environ trois pour cent, l&rsquo;eau reste enti\u00e8rement dissoute dans le liquide et les bulles ne se forment pas. Ce n&rsquo;est que lorsque la proportion d&rsquo;eau dans le liquide de frein d\u00e9passe environ trois pour cent que des gouttes d&rsquo;eau se forment et se transforment en dangereuses bulles de gaz lors de la mont\u00e9e en temp\u00e9rature sous la pression des freins.\r\n\r\n<figure id=\"attachment_2470\" aria-describedby=\"caption-attachment-2470\" style=\"width: 500px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"wp-image-2470 size-full\" src=\"https:\/\/www.motointegrator.fr\/blog\/wp-content\/uploads\/sites\/6\/2017\/08\/shutterstock_172497248.jpg\" alt=\"Liquide de frein \" width=\"500\" height=\"375\" srcset=\"https:\/\/www.motointegrator.fr\/blog\/wp-content\/uploads\/sites\/6\/2017\/08\/shutterstock_172497248.jpg 500w, https:\/\/www.motointegrator.fr\/blog\/wp-content\/uploads\/sites\/6\/2017\/08\/shutterstock_172497248-300x225.jpg 300w, https:\/\/www.motointegrator.fr\/blog\/wp-content\/uploads\/sites\/6\/2017\/08\/shutterstock_172497248-100x75.jpg 100w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><figcaption id=\"caption-attachment-2470\" class=\"wp-caption-text\">\u00a9 Shutterstock \/ pryzmat<\/figcaption><\/figure>\r\n<h2>Pr\u00e9servation des performances gr\u00e2ce \u00e0 la protection contre la corrosion<\/h2>\r\nLes liquides de frein modernes prot\u00e8gent les composants m\u00e9talliques du syst\u00e8me de freinage contre la corrosion. Cependant, si le liquide contient trop d&rsquo;eau, celle-ci accentue l&rsquo;effet de la corrosion. Si la corrosion est importante, un remplacement de l&rsquo;ensemble du syst\u00e8me de freinage s&rsquo;impose. La meilleure fa\u00e7on d&rsquo;\u00e9viter de tels dommages dus \u00e0 la corrosion est de v\u00e9rifier et de remplacer r\u00e9guli\u00e8rement le liquide de frein. Dans tous les cas, il convient de remplacer le liquide de frein dans un v\u00e9hicule au plus tard tous les deux ans.\r\n\r\n<div class=\"product-slider\" style=\"--swiper-theme-color: #d80812;--swiper-navigation-size: 22px;--swiper-navigation-sides-offset: -25px;\"><div class=\"slider-title\"><svg id=\"fi_9219671\" enable-background=\"new 0 0 64 64\" height=\"512\" viewBox=\"0 0 64 64\" width=\"512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><g><g><path d=\"m25.308 61.679c-3.514 0-6.373-2.859-6.373-6.373s2.859-6.372 6.373-6.372 6.373 2.858 6.373 6.372-2.859 6.373-6.373 6.373zm0-8.745c-1.308 0-2.373 1.064-2.373 2.372 0 1.309 1.064 2.373 2.373 2.373s2.373-1.064 2.373-2.373c0-1.308-1.064-2.372-2.373-2.372z\"><\/path><path d=\"m47.462 61.679c-3.514 0-6.372-2.859-6.372-6.373s2.858-6.372 6.372-6.372 6.373 2.858 6.373 6.372-2.86 6.373-6.373 6.373zm0-8.745c-1.308 0-2.372 1.064-2.372 2.372 0 1.309 1.064 2.373 2.372 2.373 1.309 0 2.373-1.064 2.373-2.373 0-1.308-1.065-2.372-2.373-2.372z\"><\/path><\/g><path d=\"m52.128 43.994h-31.419c-3.057 0-5.668-2.081-6.35-5.061l-6.521-28.477c-.086-.376-.346-.698-.696-.86l-5.409-2.507c-1.252-.58-1.797-2.066-1.217-3.319.58-1.252 2.067-1.797 3.319-1.217l5.409 2.507c1.743.807 3.04 2.407 3.468 4.28l6.521 28.479c.158.692.765 1.176 1.476 1.176h31.419c.708 0 1.314-.481 1.476-1.171l5.07-21.813c.145-.62-.119-1.071-.288-1.284-.17-.214-.55-.572-1.186-.572h-37c-1.381 0-2.5-1.119-2.5-2.5s1.119-2.5 2.5-2.5h37c1.999 0 3.857.897 5.101 2.462s1.696 3.579 1.244 5.526l-5.071 21.814c-.691 2.965-3.3 5.037-6.346 5.037z\"><\/path><\/g><\/svg><h2>Commander en ligne des syst\u00e8mes de freinage de haute qualit\u00e9<\/h2><\/div><div class=\"swiper\"><div class=\"swiper-wrapper\"><div class=\"swiper-slide product\"><img decoding=\"async\" src=\"https:\/\/ic-files-res.cloudinary.com\/image\/upload\/t_pad_white1200x1200v1\/v1\/item\/tovw1k1jrmsjfs9j8fu9.jpg\" alt=\"49616\" \/><a class=\"line-clamp-title\" href=\"https:\/\/www.motointegrator.fr\/produits\/2170444-liquide-de-frein-febi-bilstein-dot4-plus-23932-5l\" target=\"_blank\">Liquide de frein FEBI BILSTEIN DOT4 PLUS 23932 5L<\/a><p>Febi Bilstein<\/p><div class=\"price-container\"><p class=\"price\">29.91 EUR<\/p><button class=\"price-button\"><svg id=\"fi_9219671\" enable-background=\"new 0 0 64 64\" height=\"512\" viewBox=\"0 0 64 64\" width=\"512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><g><g><path d=\"m25.308 61.679c-3.514 0-6.373-2.859-6.373-6.373s2.859-6.372 6.373-6.372 6.373 2.858 6.373 6.372-2.859 6.373-6.373 6.373zm0-8.745c-1.308 0-2.373 1.064-2.373 2.372 0 1.309 1.064 2.373 2.373 2.373s2.373-1.064 2.373-2.373c0-1.308-1.064-2.372-2.373-2.372z\"><\/path><path d=\"m47.462 61.679c-3.514 0-6.372-2.859-6.372-6.373s2.858-6.372 6.372-6.372 6.373 2.858 6.373 6.372-2.86 6.373-6.373 6.373zm0-8.745c-1.308 0-2.372 1.064-2.372 2.372 0 1.309 1.064 2.373 2.372 2.373 1.309 0 2.373-1.064 2.373-2.373 0-1.308-1.065-2.372-2.373-2.372z\"><\/path><\/g><path d=\"m52.128 43.994h-31.419c-3.057 0-5.668-2.081-6.35-5.061l-6.521-28.477c-.086-.376-.346-.698-.696-.86l-5.409-2.507c-1.252-.58-1.797-2.066-1.217-3.319.58-1.252 2.067-1.797 3.319-1.217l5.409 2.507c1.743.807 3.04 2.407 3.468 4.28l6.521 28.479c.158.692.765 1.176 1.476 1.176h31.419c.708 0 1.314-.481 1.476-1.171l5.07-21.813c.145-.62-.119-1.071-.288-1.284-.17-.214-.55-.572-1.186-.572h-37c-1.381 0-2.5-1.119-2.5-2.5s1.119-2.5 2.5-2.5h37c1.999 0 3.857.897 5.101 2.462s1.696 3.579 1.244 5.526l-5.071 21.814c-.691 2.965-3.3 5.037-6.346 5.037z\"><\/path><\/g><\/svg><path stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"m8.25 4.5 7.5 7.5-7.5 7.5\" \/><\/svg><\/button><\/div><p class=\"price-info\">TVA incluse, hors frais de port<\/p><\/div><div class=\"swiper-slide product\"><img decoding=\"async\" src=\"https:\/\/ic-files-res.cloudinary.com\/image\/upload\/t_pad_white1200x1200v1\/v1\/item\/Fh4WPgySVYtG1tC2mJF2e2JLVUoC2BZP.jpg\" alt=\"35705\" \/><a class=\"line-clamp-title\" href=\"https:\/\/www.motointegrator.fr\/produits\/1687542-main-de-frein-knorr-bremse-ku-1311\" target=\"_blank\">Main de frein KNORR-BREMSE KU 1311<\/a><p>Knorr<\/p><div class=\"price-container\"><p class=\"price\">9.17 EUR<\/p><button class=\"price-button\"><svg id=\"fi_9219671\" enable-background=\"new 0 0 64 64\" height=\"512\" viewBox=\"0 0 64 64\" width=\"512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><g><g><path d=\"m25.308 61.679c-3.514 0-6.373-2.859-6.373-6.373s2.859-6.372 6.373-6.372 6.373 2.858 6.373 6.372-2.859 6.373-6.373 6.373zm0-8.745c-1.308 0-2.373 1.064-2.373 2.372 0 1.309 1.064 2.373 2.373 2.373s2.373-1.064 2.373-2.373c0-1.308-1.064-2.372-2.373-2.372z\"><\/path><path d=\"m47.462 61.679c-3.514 0-6.372-2.859-6.372-6.373s2.858-6.372 6.372-6.372 6.373 2.858 6.373 6.372-2.86 6.373-6.373 6.373zm0-8.745c-1.308 0-2.372 1.064-2.372 2.372 0 1.309 1.064 2.373 2.372 2.373 1.309 0 2.373-1.064 2.373-2.373 0-1.308-1.065-2.372-2.373-2.372z\"><\/path><\/g><path d=\"m52.128 43.994h-31.419c-3.057 0-5.668-2.081-6.35-5.061l-6.521-28.477c-.086-.376-.346-.698-.696-.86l-5.409-2.507c-1.252-.58-1.797-2.066-1.217-3.319.58-1.252 2.067-1.797 3.319-1.217l5.409 2.507c1.743.807 3.04 2.407 3.468 4.28l6.521 28.479c.158.692.765 1.176 1.476 1.176h31.419c.708 0 1.314-.481 1.476-1.171l5.07-21.813c.145-.62-.119-1.071-.288-1.284-.17-.214-.55-.572-1.186-.572h-37c-1.381 0-2.5-1.119-2.5-2.5s1.119-2.5 2.5-2.5h37c1.999 0 3.857.897 5.101 2.462s1.696 3.579 1.244 5.526l-5.071 21.814c-.691 2.965-3.3 5.037-6.346 5.037z\"><\/path><\/g><\/svg><path stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"m8.25 4.5 7.5 7.5-7.5 7.5\" \/><\/svg><\/button><\/div><p class=\"price-info\">TVA incluse, hors frais de port<\/p><\/div><div class=\"swiper-slide product\"><img decoding=\"async\" src=\"https:\/\/ic-files-res.cloudinary.com\/image\/upload\/t_pad_white1200x1200v1\/v1\/item\/ekc69crplhejrlpdbhrr.jpg\" alt=\"49663\" \/><a class=\"line-clamp-title\" href=\"https:\/\/www.motointegrator.fr\/produits\/1722915-raccord-de-tuyau-tekalan-raufoss-905-12-012\" target=\"_blank\">Raccord de tuyau TEKALAN RAUFOSS 905 12 012<\/a><p>Raufoss<\/p><div class=\"price-container\"><p class=\"price\">6.19 EUR<\/p><button class=\"price-button\"><svg id=\"fi_9219671\" enable-background=\"new 0 0 64 64\" height=\"512\" viewBox=\"0 0 64 64\" width=\"512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><g><g><path d=\"m25.308 61.679c-3.514 0-6.373-2.859-6.373-6.373s2.859-6.372 6.373-6.372 6.373 2.858 6.373 6.372-2.859 6.373-6.373 6.373zm0-8.745c-1.308 0-2.373 1.064-2.373 2.372 0 1.309 1.064 2.373 2.373 2.373s2.373-1.064 2.373-2.373c0-1.308-1.064-2.372-2.373-2.372z\"><\/path><path d=\"m47.462 61.679c-3.514 0-6.372-2.859-6.372-6.373s2.858-6.372 6.372-6.372 6.373 2.858 6.373 6.372-2.86 6.373-6.373 6.373zm0-8.745c-1.308 0-2.372 1.064-2.372 2.372 0 1.309 1.064 2.373 2.372 2.373 1.309 0 2.373-1.064 2.373-2.373 0-1.308-1.065-2.372-2.373-2.372z\"><\/path><\/g><path d=\"m52.128 43.994h-31.419c-3.057 0-5.668-2.081-6.35-5.061l-6.521-28.477c-.086-.376-.346-.698-.696-.86l-5.409-2.507c-1.252-.58-1.797-2.066-1.217-3.319.58-1.252 2.067-1.797 3.319-1.217l5.409 2.507c1.743.807 3.04 2.407 3.468 4.28l6.521 28.479c.158.692.765 1.176 1.476 1.176h31.419c.708 0 1.314-.481 1.476-1.171l5.07-21.813c.145-.62-.119-1.071-.288-1.284-.17-.214-.55-.572-1.186-.572h-37c-1.381 0-2.5-1.119-2.5-2.5s1.119-2.5 2.5-2.5h37c1.999 0 3.857.897 5.101 2.462s1.696 3.579 1.244 5.526l-5.071 21.814c-.691 2.965-3.3 5.037-6.346 5.037z\"><\/path><\/g><\/svg><path stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"m8.25 4.5 7.5 7.5-7.5 7.5\" \/><\/svg><\/button><\/div><p class=\"price-info\">TVA incluse, hors frais de port<\/p><\/div><div class=\"swiper-slide product\"><img decoding=\"async\" src=\"https:\/\/ic-files-res.cloudinary.com\/image\/upload\/t_pad_white1200x1200v1\/v1\/item\/xda4srfebxjvd6aof4kj.jpg\" alt=\"49639\" \/><a class=\"line-clamp-title\" href=\"https:\/\/www.motointegrator.fr\/produits\/2170271-liquide-de-frein-esp-dot-4-hp-bosch-1-987-479-113-1l\" target=\"_blank\">Liquide de frein ESP DOT 4 HP BOSCH 1 987 479 113, 1L<\/a><p>Bosch<\/p><div class=\"price-container\"><p class=\"price\">8.59 EUR<\/p><button class=\"price-button\"><svg id=\"fi_9219671\" enable-background=\"new 0 0 64 64\" height=\"512\" viewBox=\"0 0 64 64\" width=\"512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><g><g><path d=\"m25.308 61.679c-3.514 0-6.373-2.859-6.373-6.373s2.859-6.372 6.373-6.372 6.373 2.858 6.373 6.372-2.859 6.373-6.373 6.373zm0-8.745c-1.308 0-2.373 1.064-2.373 2.372 0 1.309 1.064 2.373 2.373 2.373s2.373-1.064 2.373-2.373c0-1.308-1.064-2.372-2.373-2.372z\"><\/path><path d=\"m47.462 61.679c-3.514 0-6.372-2.859-6.372-6.373s2.858-6.372 6.372-6.372 6.373 2.858 6.373 6.372-2.86 6.373-6.373 6.373zm0-8.745c-1.308 0-2.372 1.064-2.372 2.372 0 1.309 1.064 2.373 2.372 2.373 1.309 0 2.373-1.064 2.373-2.373 0-1.308-1.065-2.372-2.373-2.372z\"><\/path><\/g><path d=\"m52.128 43.994h-31.419c-3.057 0-5.668-2.081-6.35-5.061l-6.521-28.477c-.086-.376-.346-.698-.696-.86l-5.409-2.507c-1.252-.58-1.797-2.066-1.217-3.319.58-1.252 2.067-1.797 3.319-1.217l5.409 2.507c1.743.807 3.04 2.407 3.468 4.28l6.521 28.479c.158.692.765 1.176 1.476 1.176h31.419c.708 0 1.314-.481 1.476-1.171l5.07-21.813c.145-.62-.119-1.071-.288-1.284-.17-.214-.55-.572-1.186-.572h-37c-1.381 0-2.5-1.119-2.5-2.5s1.119-2.5 2.5-2.5h37c1.999 0 3.857.897 5.101 2.462s1.696 3.579 1.244 5.526l-5.071 21.814c-.691 2.965-3.3 5.037-6.346 5.037z\"><\/path><\/g><\/svg><path stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"m8.25 4.5 7.5 7.5-7.5 7.5\" \/><\/svg><\/button><\/div><p class=\"price-info\">TVA incluse, hors frais de port<\/p><\/div><\/div><div class=\"swiper-pagination\"><\/div><div class=\"swiper-button-prev\"><\/div><div class=\"swiper-button-next\"><\/div><\/div><\/div>\r\n<h2>Liquide de frein : \u00e9tiquetage<\/h2>\r\nSi les liquides de frein utilis\u00e9s autrefois \u00e9taient presque exclusivement \u00e0 base d&rsquo;huile min\u00e9rale, les liquides de frein modernes sont g\u00e9n\u00e9ralement \u00e0 base de polyglycols. Pour certaines applications sp\u00e9cifiques, on utilise \u00e9galement des liquides de frein \u00e0 base de silicone. Les liquides de frein DOT 4, chimiquement \u00e0 base de glycol, sont particuli\u00e8rement r\u00e9pandus, tandis que les DOT 5.1 sont utilis\u00e9s pour les moteurs hautes performances, par exemple dans le sport automobile. Le DOT 5 est \u00e0 base de silicone. Les liquides de frein DOT 3 \u00e0 base d&rsquo;huile min\u00e9rale ne sont utilis\u00e9s que sur les v\u00e9hicules anciens ou sp\u00e9ciaux.\r\n\r\n<!-- \/wp:post-content -->","protected":false},"excerpt":{"rendered":"<p>Un bon liquide de frein garantit un freinage en toute s\u00e9curit\u00e9 La plupart des v\u00e9hicules automobiles modernes sont \u00e9quip\u00e9s d&rsquo;un syst\u00e8me de freinage hydraulique. Le liquide de frein y fait office de fluide hydraulique. Il transmet la force exerc\u00e9e par le conducteur sur la p\u00e9dale de frein aux freins \u00e0 tambour ou aux freins \u00e0 [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":2469,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[4178,2707,4181,4175],"class_list":["post-2464","post","type-post","status-publish","format-standard","has-post-thumbnail","category-voiture-2","tag-fonction-du-liquide-de-frein","tag-liquide-de-frein","tag-liquides-de-frein","tag-proprietes-du-liquide-de-frein"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>R\u00f4le du liquide de frein<\/title>\n<meta name=\"description\" content=\"Le liquide de frein assure une fonction importante et d\u00e9terminante pour la s\u00e9curit\u00e9. 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