{"id":1286,"date":"2020-06-10T15:39:27","date_gmt":"2020-06-10T15:39:27","guid":{"rendered":"https:\/\/albertlacostataller.com\/caja-de-cambios-automatica\/"},"modified":"2021-01-06T11:39:22","modified_gmt":"2021-01-06T11:39:22","slug":"caixa-del-canvi-automatica","status":"publish","type":"post","link":"https:\/\/albertlacostataller.com\/ca\/caixa-del-canvi-automatica\/","title":{"rendered":"Com funciona una caixa del canvi autom\u00e0tica?"},"content":{"rendered":"\n<p>L\u2019\u00fas de la caixa del canvi autom\u00e0tica per convertidor de parell s\u2019ha est\u00e8s i popularitzat en les \u00faltimes tres d\u00e8cades. El seu mecanisme ofereix un funcionament eficient i est\u00e0 format per tres elements essencials: un convertidor de parell, el tren d\u2019engranatges epicicloidal i la mecatr\u00f2nica, per\u00f2 com funciona una caixa del canvi autom\u00e0tica?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><br>El funcionament de la caixa del canvi autom\u00e0tica<br> <\/h2>\n\n\n\n<p>El convertidor de parell se situa a la sortida del motor i funciona com un embragatge hidr\u00e0ulic. Per a exemplificar-ho, imagina un recipient ple d\u2019oli que cont\u00e9 dues h\u00e8lixs. Una d\u2019elles \u00e9s la turbina , que est\u00e0 unida el motor, i l\u2019altra es coneix com a bomba, que connecta amb els engranatges de la caixa del canvi. La turbina tenen molt poca for\u00e7a quan el motor gira a ralent\u00ed i a penes pot moure el fluid on est\u00e0 continguda.<br> <\/p>\n\n\n\n<p>A mesura que pugen les revolucions del motor augmenta la velocitat de la turbina. Amb aquesta acci\u00f3 es forma una turbul\u00e8ncia en l\u2019oli que fa que la bomba funcioni i faci girar els engranatges de la caixa de canvi. \u00c9s important assenyalar que aquest sistema es produeix a baixes velocitats. L\u2019efecte de lliscament fa que la turbina giri un 2% m\u00e9s r\u00e0pid que la bomba.<\/p>\n\n\n\n<p>Els <a href=\"https:\/\/albertlacostataller.com\/\">engranatges de la caixa del canvi<\/a>, o tren d\u2019engranatges epicicloidals o planetaris, giren per l\u2019acci\u00f3 de la bomba. El tren est\u00e0 compost per un engranatge central anomenat sol, tres engranatges que giren entorn d\u2019ell i sobre s\u00ed mateixos denominats sat\u00e8l\u00b7lits i un engranatge exterior anomenat corona, que posseeix dents en la seva cara interna que ho fan girar sobre els sat\u00e8l\u00b7lits.<br> <\/p>\n\n\n\n<p>Aquest conjunt d\u2019engranatges pot formar diferents combinacions en bloquejar el gir d\u2019algun dels seus components, donant lloc a diferents relacions de transmissi\u00f3, la qual cosa produeix les diferents velocitats de despla\u00e7ament del cotxe.<br> <\/p>\n\n\n\n<p>La mecatr\u00f2nica \u00e9s el sistema que permet bloquejar els engranatges. Inclou un sistema electr\u00f2nic i un circuit hidr\u00e0ulic. que cont\u00e9 ATF, el mateix fluid contingut en el convertidor, el qual a trav\u00e9s d\u2019una s\u00e8rie de canals es connecta amb el convertidor.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L\u2019\u00fas de la caixa del canvi autom\u00e0tica per convertidor de parell s\u2019ha est\u00e8s i popularitzat en les \u00faltimes tres d\u00e8cades. El seu mecanisme ofereix un funcionament eficient i est\u00e0 format per tres elements essencials: un convertidor de parell, el tren d\u2019engranatges epicicloidal i la mecatr\u00f2nica, per\u00f2 com funciona una caixa del canvi autom\u00e0tica? El funcionament [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1282,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[156,157],"tags":[],"class_list":["post-1286","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-consells-ca","category-mecanica-ca"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Com funciona una caixa del canvi autom\u00e0tica? 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