{"id":124759,"date":"2025-05-28T11:51:25","date_gmt":"2025-05-28T08:51:25","guid":{"rendered":"https:\/\/realitatearutiera.ro\/?p=124759"},"modified":"2025-05-28T11:51:26","modified_gmt":"2025-05-28T08:51:26","slug":"siguranta-la-volan-frana-de-motor-vs-frana-clasica","status":"publish","type":"post","link":"https:\/\/realitatearutiera.ro\/?p=124759","title":{"rendered":"Siguran\u021ba la volan: Fr\u00e2na de motor vs. fr\u00e2na clasic\u0103"},"content":{"rendered":"\n

Siguran\u021ba la volan depinde \u00een mare m\u0103sur\u0103 de controlul eficient al vitezei \u0219i oprirea vehiculului. Cele dou\u0103 metode principale pentru a \u00eencetini ma\u0219ina sunt fr\u00e2na de motor \u0219i fr\u00e2na clasic\u0103, de picior. Cele dou\u0103 sisteme ac\u021bioneaz\u0103 diferit \u0219i sunt recomandate \u00een situa\u021bii specifice. De asemenea, exist\u0103 \u0219i fr\u00e2na de m\u00e2n\u0103, dar care nu poate fi folosit\u0103 dec\u00e2t \u00een anumite momente.<\/p>\n\n\n\n

Vehiculele au mai multe sisteme complementare de reducere a vitezei.<\/p>\n\n\n\n

Avem, a\u0219adar, fr\u00e2na clasic\u0103, de picior<\/a>, pe cea de m\u00e2n\u0103 \u0219i mai exist\u0103 \u0219i fr\u00e2na de motor.<\/p>\n\n\n\n

Iat\u0103 cum \u0219i c\u00e2nd e indicat s\u0103 folosim aceste sisteme de fr\u00e2nare.<\/p>\n\n\n\n

Cum se folosesc corect sistemele de fr\u00e2nare ale ma\u0219inii<\/h2>\n\n\n\n

Fr\u00e2na de motor e indicat\u0103 c\u00e2nd drumul e alunecos. Cea de picior e folosit\u0103 pentru a opri ma\u0219ina. Iar fr\u00e2na de m\u00e2n\u0103, care blocheaz\u0103 ro\u021bile, se folose\u0219te dup\u0103 ce ai parcat.<\/p>\n\n\n\n

Fr\u00e2na de picior \u0219i cea de m\u00e2n\u0103 folosesc un sistem mecanic care ac\u021bioneaz\u0103 asupra ro\u021bilor. Atunci c\u00e2nd \u0219oferul apas\u0103 pedala sau trage fr\u00e2na de m\u00e2n\u0103, prin intermediul sistemului hidraulic sau de cabluri, sunt activate pl\u0103cu\u021bele<\/a> de fr\u00e2n\u0103. Acestea apas\u0103 pe discurile de fr\u00e2n\u0103 p\u00e2n\u0103 c\u00e2nd ro\u021bile ma\u0219inii nu se mai \u00eenv\u00e2rt.<\/p>\n\n\n\n

Fr\u00e2na de motor folose\u0219te, \u00een schimb, a\u0219a cum e \u0219i denumirea, motorul pentru a reduce viteza.<\/p>\n\n\n\n

Acest tip de fr\u00e2nare se ob\u021bine prin retrogradarea succesiv\u0103 dintr-o treapt\u0103 superioar\u0103 \u00eentr-una inferioar\u0103.<\/p>\n\n\n\n

Astfel, motorul nu mai produce energie de mi\u0219care, ci va consuma energia de mi\u0219care a automobilului reduc\u00e2ndu-i viteza.<\/p>\n\n\n\n

Tehnic vorbind, c\u00e2nd folose\u0219ti acest tip de fr\u00e2n\u0103, clapeta de accelera\u021bie se \u00eenchide \u0219i opre\u0219te par\u021bial fluxul de aer c\u0103tre galeria de admisie. Cu c\u00e2t tura\u021bia va fi mai mare, cu at\u00e2t efectul imprimat va fi mai accentuat.<\/p>\n\n\n\n

Acest efect se resimte mai repede la ma\u0219inile pe benzin\u0103 dec\u00e2t la cele diesel<\/a>. Asta, deoarece viteza este redus\u0103 prin simpla eliberare a pedalei de accelera\u021bie.<\/p>\n\n\n\n

Practic, reducerea \u201enatural\u0103\u201d a tura\u021biei motorului va duce la reducerea vitezei de rota\u021bie a ro\u021bilor.<\/p>\n\n\n\n

Cum folose\u0219ti fr\u00e2na de motor?<\/h2>\n\n\n\n

Acest tip de fr\u00e2nare este recomandat pe suprafe\u021bele de rulare cu aderen\u021b\u0103 redus\u0103 deoarece \u00eempiedic\u0103 blocarea ro\u021bilor. \u00cen acela\u0219i timp, trebuie s\u0103 reduci viteza gradual, adic\u0103 s\u0103 evi\u021bi o retrogradare agresiv\u0103 a treptelor.<\/p>\n\n\n\n

De exemplu, daca e\u0219ti \u00een viteza a 5-a, la 100 km\/h, trebuie s\u0103 treci \u00een viteza a 4-a p\u00e2n\u0103 ajungi la 60-70 km\/h. Apoi cobori \u00een a 3-a p\u00e2n\u0103 la 30-40 km\/h, \u0219i tot a\u0219a p\u00e2n\u0103 ajungi la viteza dorit\u0103.<\/p>\n\n\n\n

Dac\u0103 treci din a 5-a \u00een viteza a 3-a, pentru a reduce mai rapid viteza, ri\u0219ti s\u0103 distrugi transmisia.<\/p>\n\n\n\n

C\u00e2nd viteza ajunge aproape de zero, dac\u0103 nu ape\u0219i ambreiajul, motorul se va opri, ceea ce va duce la blocarea ro\u021bilor.<\/p>\n\n\n\n

Fr\u00e2na de motor e recomandat\u0103 pe un drum acoperit de z\u0103pad\u0103. Pentru c\u0103 ac\u021bionarea fr\u00e2nei<\/a> de picior poate duce la blocarea ro\u021bilor, deci ma\u0219ina va derapa.<\/p>\n\n\n\n

Fr\u00e2na de motor va reduce treptat viteza, p\u00e2n\u0103 \u00een punctul \u00een care ma\u0219ina va putea fi oprit\u0103 \u00een siguran\u021b\u0103.<\/p>\n\n\n\n

De asemenea, prin folosirea fr\u00e2nei de motor reduci consumul de combustibibil \u0219i cre\u0219ti durata de via\u021b\u0103 a pl\u0103cu\u021belor de fr\u00e2n\u0103.<\/p>\n\n\n\n

Fr\u00e2na de motor vs. fr\u00e2na clasic\u0103<\/h2>\n\n\n\n

Fr\u00e2narea de motor se face automat, \u00een momentul \u00een care ridici piciorul de pe accelera\u021bie. Motorul \u00ee\u0219i reduce tura\u021bia, iar viteza de rota\u021bie a ro\u021bilor scade.<\/p>\n\n\n\n

Diferen\u021ba major\u0103 fa\u021b\u0103 de fr\u00e2narea clasic\u0103 este distan\u021ba de oprire. Dac\u0103 ape\u0219i fr\u00e2na de picior, po\u021bi opri ma\u0219ina \u00een c\u00e2\u021biva metri. \u00cem schimb, folosind fr\u00e2na de motor, timpul \u0219i distan\u021ba de oprire sunt mult, mult mai mari.<\/p>\n\n\n\n

De aceea, fr\u00e2na de motor e recomandat\u0103 doar pentru a reduce viteza. Dac\u0103 vrei s\u0103 opre\u0219ti ma\u0219ina sau s\u0103 reduci rapid viteza, folose\u0219ti fr\u00e2na de picior.<\/p>\n\n\n\n

Iar fr\u00e2na de m\u00e2n\u0103 se utilizeaz\u0103 c\u00e2nd ma\u0219ina e parcat\u0103, pentru a bloca ro\u021bile vehiculului.<\/p>\n\n\n\n

Niciod\u0103 \u00een mers s\u0103 nu tragi fr\u00e2na de m\u00e2n\u0103! Dac\u0103 ro\u021bile se blocheaz\u0103, chiar \u0219i la viteze de 30-50 km\/h, vei pierde controlul ma\u0219inii. Doar dac\u0103 e o situa\u021bie de urgen\u021b\u0103, \u00een care ai r\u0103mas f\u0103r\u0103 fr\u00e2na de picior, po\u021bi folosi pe cea de m\u00e2n\u0103 pentru a opri ma\u0219ina.<\/p>\n\n\n\n

\u00centr-o astfel de situa\u021bie, e recomandat s\u0103 folose\u0219ti fr\u00e2na de motor. Dar dac\u0103 nu ai suficient\u0103 distan\u021b\u0103 pentru a reduce progresiv viteza, te po\u021bi ajuta de fr\u00e2na de m\u00e2n\u0103. Dar, trebuie s\u0103 o ridici treptat, pentru a evita blocarea ro\u021bilor. Dac\u0103 fr\u00e2na de m\u00e2n\u0103 e ac\u021bionat\u0103, \u00eens\u0103, de un buton, atunci fie sistemul nu te va l\u0103sa s\u0103 o activezi, fie va bloca ro\u021bile c\u00e2nd \u00eel ape\u0219i.<\/p>\n\n\n\n

Sursa\/foto:promotor<\/p>\n","protected":false},"excerpt":{"rendered":"

Siguran\u021ba la volan depinde \u00een mare m\u0103sur\u0103 de controlul eficient al vitezei \u0219i oprirea vehiculului. Cele dou\u0103 metode principale pentru<\/p>\n","protected":false},"author":1,"featured_media":124760,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":"","jetpack_publicize_message":""},"categories":[82],"tags":[],"class_list":["post-124759","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-auto"],"jetpack_featured_media_url":"https:\/\/realitatearutiera.ro\/wp-content\/uploads\/2025\/05\/https___www.promotor.ro_wp-content_uploads_2023_11_frana_de_urgenta.webp","jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p61naM-wsf","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=\/wp\/v2\/posts\/124759","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=124759"}],"version-history":[{"count":1,"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=\/wp\/v2\/posts\/124759\/revisions"}],"predecessor-version":[{"id":124761,"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=\/wp\/v2\/posts\/124759\/revisions\/124761"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=\/wp\/v2\/media\/124760"}],"wp:attachment":[{"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=124759"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=124759"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/realitatearutiera.ro\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=124759"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}