{"id":1224,"date":"2016-02-18T13:55:50","date_gmt":"2016-02-18T12:55:50","guid":{"rendered":"https:\/\/www.oreca-store.com\/blog\/a-quoi-sert-une-lampe-stroboscopique\/"},"modified":"2024-01-09T00:49:57","modified_gmt":"2024-01-08T23:49:57","slug":"a-quoi-sert-une-lampe-stroboscopique","status":"publish","type":"post","link":"https:\/\/www.oreca-store.com\/blog\/tutoriels-cat\/a-quoi-sert-une-lampe-stroboscopique\/","title":{"rendered":"A quoi sert une lampe stroboscopique ?"},"content":{"rendered":"<h2>C&rsquo;est quoi une lampe stroboscopique ?<\/h2>\n<p><a href=\"https:\/\/www.oreca-store.com\/atelier\/outillage-de-controle\/reglage-moteur.html\" target=\"_blank\" rel=\"noopener\">La lampe stroboscopique<\/a> se pr\u00e9sente sous la forme d\u2019un pistolet \u00e0 g\u00e2chette, compos\u00e9 d\u2019un tube \u00e0 \u00e9clat et d\u2019une pince inductive. C\u2019est un outillage sp\u00e9cifique au m\u00e9canicien automobile qui lui permet de r\u00e9gler le calage de l\u2019allumage d\u2019un moteur essence, afin d\u2019obtenir un allumage dynamique.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-3330 size-full\" src=\"https:\/\/www.oreca-store.com\/blog\/wp-content\/uploads\/2016\/02\/lampe-stroboscopique.png\" srcset=\"https:\/\/www.oreca-store.com\/blog\/wp-content\/uploads\/2016\/02\/lampe-stroboscopique-300x225.png 300w, https:\/\/www.oreca-store.com\/blog\/wp-content\/uploads\/2016\/02\/lampe-stroboscopique.png 577w, https:\/\/www.oreca-store.com\/blog\/wp-content\/uploads\/2016\/02\/lampe-stroboscopique-253x190.png 253w\" alt=\"lampe-stroboscopique\" width=\"577\" height=\"433\" data-sizes=\"(max-width: 577px) 100vw, 577px\" \/><\/p>\n<h2>Pourquoi r\u00e9gler l\u2019allumage\u00a0?<\/h2>\n<p>Lorsque le m\u00e9lange air-essence explose dans le cylindre, la totalit\u00e9 des gaz ne s\u2019enflamment pas instantan\u00e9ment et ne donnent donc pas la puissance maximale imm\u00e9diatement. Afin d\u2019obtenir la totalit\u00e9 de la puissance, il faut que le m\u00e9lange soit enflamm\u00e9 avant la fin de la phase de compression, soit avant que le piston soit au <strong>point mort haut (PMH)<\/strong>. C\u2019est pourquoi on avance le moment de l\u2019allumage de la bougie.<\/p>\n<p>La lampe stroboscopique va permettre de r\u00e9gler <strong>avec pr\u00e9cision<\/strong> le calage de l\u2019allumeur (ou l\u2019avance \u00e0 l\u2019allumage) d\u2019un v\u00e9hicule essence. Un mauvais r\u00e9glage de l\u2019allumage moteur peut avoir des effets n\u00e9gatifs sur ce dernier, pouvant aller jusqu\u2019<strong>\u00e0 la casse du moteur<\/strong> dans les plus mauvais cas.<\/p>\n<p>Plus g\u00e9n\u00e9ralement, voici <strong>diff\u00e9rents probl\u00e8mes pouvant \u00eatre caus\u00e9s par un mauvais r\u00e9glage de l\u2019allumage\u00a0: <\/strong><\/p>\n<ul>\n<li>Alt\u00e9ration des performances du moteur<\/li>\n<li>Consommation excessive<\/li>\n<li>Explosions dans le pot d\u2019\u00e9chappement (g\u00e9n\u00e9ralement lorsqu\u2019il y a trop d\u2019avance)<\/li>\n<li>Taux trop important d\u2019hydrocarbures dans les gaz d\u2019\u00e9chappement<\/li>\n<li>Surchauffe du moteur (lorsqu\u2019il n\u2019y a pas assez d\u2019avance)<\/li>\n<\/ul>\n<h2>Comment fonctionne une lampe stroboscopique ?<\/h2>\n<p>Pour pouvoir r\u00e9gler l\u2019allumage du moteur, il faut placer la pince inductive sur un c\u00e2ble de bougie n\u00b01 pour faire fonctionner le pistolet. Il faut ensuite raccorder la lampe \u00e0 la batterie du v\u00e9hicule.<br \/>\nUne fois connect\u00e9e, un flash (synchronis\u00e9 avec l\u2019\u00e9tincelle) se produit et permet, en le dirigeant sur les rep\u00e8res d\u2019allumage grav\u00e9s sur la poulie de vilebrequin et sur le cache distribution (ou embrayage) d\u2019<strong>obtenir un rep\u00e8re fixe qui d\u00e9finit le moment d\u2019allumage du moteur<\/strong>. On v\u00e9rifie ainsi ais\u00e9ment et pr\u00e9cis\u00e9ment la justesse du r\u00e9glage de l\u2019avance \u00e0 l\u2019allumage.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C&rsquo;est quoi une lampe stroboscopique ? La lampe stroboscopique se pr\u00e9sente sous la forme d\u2019un pistolet \u00e0 g\u00e2chette, compos\u00e9 d\u2019un tube \u00e0 \u00e9clat et d\u2019une pince inductive. C\u2019est un outillage sp\u00e9cifique au m\u00e9canicien automobile qui lui permet de r\u00e9gler le calage de l\u2019allumage d\u2019un moteur essence, afin d\u2019obtenir un allumage dynamique. Pourquoi r\u00e9gler l\u2019allumage\u00a0? Lorsque [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[14,7],"tags":[],"class_list":["post-1224","post","type-post","status-publish","format-standard","hentry","category-moteur","category-tutoriels"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>A quoi sert une lampe stroboscopique ? 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