W dzisiejszych czasach w wielu rodzajach pojazd\u00f3w mechanicznych instalowane s\u0105 specjalne uk\u0142ady recyrkulacji spalin. Bardzo wa\u017cnymi elementami takich uk\u0142ad\u00f3w s\u0105 zawory EGR odpowiedzialne za recyrkulacj\u0119 gaz\u00f3w wylotowych.<\/p>\n
Uk\u0142ady odpowiadaj\u0105ce za recyrkulacj\u0119 spalin by\u0142y stosowane w pojazdach ameryka\u0144skich ze wzgl\u0119du na rygorystyczne przepisy maj\u0105ce na celu ograniczenie emisji toksycznych zwi\u0105zk\u00f3w wydostaj\u0105cych si\u0119 z rur wydechowych.<\/p>\n
Systemy tego typu s\u0142u\u017c\u0105 do ponownego wprowadzania spalin do cylindr\u00f3w silnika. Dzi\u0119ki temu obni\u017cona zostanie temperatura w komorze spalania, a sam proces spalania zostanie spowolniony. To z kolei doprowadzi do znacznie mniejsz\u0105 emisj\u0119 tlenk\u00f3w azotu, kt\u00f3re s\u0105 substancjami szkodliwymi. Spaliny wpuszczone do dolotu ograniczaj\u0105 ilo\u015b\u0107 tlenu i dlatego proces spalania jest spowolniony. Oczywi\u015bcie zbyt du\u017ca ilo\u015b\u0107 spalin sprawi, \u017ce moc silnika spadnie i mo\u017ce on si\u0119 dusi\u0107.<\/p>\n
W zwi\u0105zku z powy\u017cszymi problemami w uk\u0142adach recyrkulacji spalin s\u0105 montowane specjalne zawory EGR, kt\u00f3re odpowiadaj\u0105 za regulowanie ilo\u015bci spalin zawracaj\u0105cych do silnika. Gazy spalinowe s\u0105 zawracane w \u015brodkowym zakresie obrot\u00f3w, gdy obci\u0105\u017cenie silnika jest niskie lub \u015brednie. Oznacza to, \u017ce na wolnych obrotach lub przy pedale gazu wci\u015bni\u0119tym do oporu, zaw\u00f3r EGR b\u0119dzie zamkni\u0119ty.<\/p>\n
Oczywi\u015bcie konstrukcja, sterowanie i dok\u0142adna charakterystyka pracy danego zaworu EGR zale\u017cy od rodzaju silnika, w kt\u00f3rym zosta\u0142 on zainstalowany.<\/p>\n
Nale\u017cy pami\u0119ta\u0107, \u017ce najpopularniejsze usterki zwi\u0105zane z prac\u0105 zawor\u00f3w jest ich pozostawanie w pozycji otwartej. Oznacza to, \u017ce spaliny ca\u0142y czas dostaj\u0105 si\u0119 do kom\u00f3r spalania, a efektem tego jest zmniejszenie mocy, d\u0142awienie si\u0119, zwi\u0119kszone zu\u017cycie paliwa oraz pal\u0105ca si\u0119 kontrolka „check engine”.<\/p>\n
Zwykle zaw\u00f3r jest blokowany w takiej pozycji przez nagar, sadz\u0119 i inne osady. Pomocny jest demonta\u017c tego elementu i jego staranne wyczyszczenie. W przypadku bardziej skomplikowanych awarii konieczna jest wymiana zaworu. W zale\u017cno\u015bci od rodzaju kosztuje on od kilkuset do kilku tysi\u0119cy z\u0142otych. Jest to do\u015b\u0107 czu\u0142y element, wi\u0119c warto inwestowa\u0107 w oryginalne zawory EGR pochodz\u0105ce od renomowanych producent\u00f3w.<\/p>\n
<\/p>\n
Zdj\u0119cie pochodzi z wikipedii\/autor:Steevven1\r\nOryginalnym przesy\u0142aj\u0105cym by\u0142 Steevven1 z angielskiej Wikipedii<\/a>, CC BY 2.5<\/a>, Wikimedia Commons<\/pre>\n","protected":false},"excerpt":{"rendered":"W dzisiejszych czasach w wielu rodzajach pojazd\u00f3w mechanicznych instalowane s\u0105 specjalne uk\u0142ady recyrkulacji spalin. Bardzo wa\u017cnymi elementami takich uk\u0142ad\u00f3w s\u0105 zawory EGR<\/p>\n","protected":false},"author":4,"featured_media":1216,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[315,316],"class_list":["post-1215","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-artykuly","tag-egr","tag-zawor-egr"],"yoast_head":"\n
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