{"id":4772,"date":"2024-02-03T17:21:55","date_gmt":"2024-02-03T09:21:55","guid":{"rendered":"https:\/\/shchimay.com\/?p=4772"},"modified":"2024-02-22T00:48:24","modified_gmt":"2024-02-21T16:48:24","slug":"how-do-engine-valves-work","status":"publish","type":"post","link":"https:\/\/shchimay.com\/vi\/how-do-engine-valves-work\/","title":{"rendered":"van \u0111\u1ed9ng c\u01a1 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o"},"content":{"rendered":"

“Gi\u1ea3i ph\u00f3ng s\u1ee9c m\u1ea1nh: Kh\u00e1m ph\u00e1 c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a van \u0111\u1ed9ng c\u01a1”<\/p>\n

T\u00ecm hi\u1ec3u kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n v\u1ec1 van \u0111\u1ed9ng c\u01a1<\/h1>\n

\nT\u00ecm hi\u1ec3u c\u01a1 b\u1ea3n v\u1ec1 van \u0111\u1ed9ng c\u01a1<\/p>\n

Van \u0111\u1ed9ng c\u01a1 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u1ed9ng c\u01a1 \u0111\u1ed1t trong. Nh\u1eefng b\u1ed9 ph\u1eadn nh\u1ecf nh\u01b0ng c\u00f3 v\u00f5 n\u00e0y c\u00f3 nhi\u1ec7m v\u1ee5 ki\u1ec3m so\u00e1t lu\u1ed3ng kh\u00f4ng kh\u00ed v\u00e0 nhi\u00ean li\u1ec7u v\u00e0o bu\u1ed3ng \u0111\u1ed1t v\u00e0 th\u1ea3i kh\u00ed th\u1ea3i ra ngo\u00e0i. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd \u0111i s\u00e2u v\u00e0o ho\u1ea1t \u0111\u1ed9ng b\u00ean trong c\u1ee7a van \u0111\u1ed9ng c\u01a1 v\u00e0 kh\u00e1m ph\u00e1 c\u00e1ch ch\u00fang g\u00f3p ph\u1ea7n v\u00e0o hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3 c\u1ee7a \u0111\u1ed9ng c\u01a1.<\/p>\n

\n\n\n\n\n\n
M\u00f4 h\u00ecnh<\/td>\n\u1ed0ng trung t\u00e2m<\/td>\nC\u1ed1ng<\/td>\n\u0110\u1ea7u n\u1ed1i b\u1ec3 n\u01b0\u1edbc mu\u1ed1i<\/td>\nC\u01a1 s\u1edf<\/td>\nTh\u00f4ng s\u1ed1 ngu\u1ed3n \u0111i\u1ec7n<\/td>\nC\u00f4ng su\u1ea5t t\u1ed1i \u0111a<\/td>\nTh\u00f4ng s\u1ed1 \u00e1p su\u1ea5t<\/td>\nNhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng<\/td>\n<\/tr>\n
3900<\/td>\n3,5″(3″) OD<\/td>\n2″NPTF<\/td>\n1″NPTM<\/td>\n6″-8UN<\/td>\n24v,110v,220v-50Hz,60Hz<\/td>\n171W<\/td>\n2.1MPa<\/td>\n1\u2103-43\u2103<\/td>\n<\/tr>\n
0,14-0,84MPa<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

\u0110\u1ec3 hi\u1ec3u c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a van \u0111\u1ed9ng c\u01a1, tr\u01b0\u1edbc ti\u00ean c\u1ea7n ph\u1ea3i hi\u1ec3u hai lo\u1ea1i van ch\u00ednh th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u0111\u1ed9ng c\u01a1 \u0111\u1ed1t trong: van n\u1ea1p v\u00e0 van x\u1ea3. Van n\u1ea1p c\u00f3 nhi\u1ec7m v\u1ee5 cho ph\u00e9p h\u1ed7n h\u1ee3p kh\u00f4ng kh\u00ed v\u00e0 nhi\u00ean li\u1ec7u \u0111i v\u00e0o bu\u1ed3ng \u0111\u1ed1t, trong khi van x\u1ea3 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho kh\u00ed th\u1ea3i tho\u00e1t ra ngo\u00e0i.<\/p>\n

C\u1ea3 van n\u1ea1p v\u00e0 van x\u1ea3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng v\u1eadt li\u1ec7u b\u1ec1n nh\u01b0 th\u00e9p kh\u00f4ng g\u1ec9 ho\u1eb7c titan \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p su\u1ea5t cao nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t b\u00ean trong \u0111\u1ed9ng c\u01a1. C\u00e1c van n\u00e0y \u0111\u01b0\u1ee3c v\u1eadn h\u00e0nh b\u1edfi tr\u1ee5c cam, \u0111\u1ed3ng b\u1ed9 v\u1edbi chuy\u1ec3n \u0111\u1ed9ng quay c\u1ee7a \u0111\u1ed9ng c\u01a1. Khi tr\u1ee5c cam quay, n\u00f3 s\u1ebd \u0111\u1ea9y v\u00e0o th\u00e2n van, l\u00e0m cho van \u0111\u00f3ng m\u1edf theo nh\u1eefng kho\u1ea3ng th\u1eddi gian ch\u00ednh x\u00e1c.<\/p>\n

Vi\u1ec7c \u0111\u00f3ng m\u1edf van \u0111\u01b0\u1ee3c h\u1eb9n gi\u1edd tr\u00f9ng v\u1edbi chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a c\u00e1c piston b\u00ean trong \u0111\u1ed9ng c\u01a1. Trong h\u00e0nh tr\u00ecnh n\u1ea1p, piston di chuy\u1ec3n xu\u1ed1ng d\u01b0\u1edbi t\u1ea1o ra ch\u00e2n kh\u00f4ng trong bu\u1ed3ng \u0111\u1ed1t. Ch\u00e2n kh\u00f4ng n\u00e0y l\u00e0m cho van n\u1ea1p m\u1edf ra, cho ph\u00e9p h\u1ed7n h\u1ee3p kh\u00f4ng kh\u00ed v\u00e0 nhi\u00ean li\u1ec7u \u0111\u01b0\u1ee3c h\u00fat v\u00e0o bu\u1ed3ng. Khi piston ch\u1ea1m \u0111\u1ebfn \u0111\u00e1y h\u00e0nh tr\u00ecnh, van n\u1ea1p s\u1ebd \u0111\u00f3ng l\u1ea1i, l\u00e0m k\u00edn bu\u1ed3ng \u0111\u1ed1t.<\/p>\n

Khi piston di chuy\u1ec3n ng\u01b0\u1ee3c l\u00ean trong h\u00e0nh tr\u00ecnh n\u00e9n, c\u1ea3 hai van v\u1eabn \u0111\u00f3ng \u0111\u1ec3 ng\u0103n ch\u1eb7n b\u1ea5t k\u1ef3 s\u1ef1 r\u00f2 r\u1ec9 n\u00e0o c\u1ee7a h\u1ed7n h\u1ee3p kh\u00f4ng kh\u00ed-nhi\u00ean li\u1ec7u. Khi piston \u0111\u1ea1t \u0111\u1ebfn \u0111\u1ec9nh h\u00e0nh tr\u00ecnh, bugi s\u1ebd \u0111\u1ed1t ch\u00e1y h\u1ed7n h\u1ee3p n\u00e9n, t\u1ea1o ra m\u1ed9t v\u1ee5 n\u1ed5 m\u1ea1nh \u0111\u1ea9y piston \u0111i xu\u1ed1ng. Chuy\u1ec3n \u0111\u1ed9ng \u0111i xu\u1ed1ng n\u00e0y c\u1ee7a piston \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 h\u00e0nh tr\u00ecnh c\u00f4ng su\u1ea5t.<\/p>\n

\n\"alt-3911\"
\nKhi k\u1ebft th\u00fac h\u00e0nh tr\u00ecnh c\u00f4ng su\u1ea5t, van x\u1ea3 m\u1edf ra, cho ph\u00e9p kh\u00ed th\u1ea3i tho\u00e1t ra kh\u1ecfi bu\u1ed3ng \u0111\u1ed1t. Sau \u0111\u00f3, piston di chuy\u1ec3n ng\u01b0\u1ee3c l\u00ean trong h\u00e0nh tr\u00ecnh x\u1ea3, \u0111\u1ea9y l\u01b0\u1ee3ng kh\u00ed th\u1ea3i c\u00f2n l\u1ea1i ra ngo\u00e0i qua van m\u1edf. Khi piston \u0111\u1ea1t \u0111\u1ebfn \u0111\u1ec9nh h\u00e0nh tr\u00ecnh, van x\u1ea3 s\u1ebd \u0111\u00f3ng l\u1ea1i v\u00e0 chu tr\u00ecnh b\u1eaft \u0111\u1ea7u l\u1ea1i.<\/p>\n

Th\u1eddi gian v\u00e0 kho\u1ea3ng th\u1eddi gian \u0111\u00f3ng m\u1edf van r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ed9ng c\u01a1 ho\u1ea1t \u0111\u1ed9ng t\u1ed1i \u01b0u. \u0110\u00e2y l\u00e0 n\u01a1i tr\u1ee5c cam ph\u00e1t huy t\u00e1c d\u1ee5ng. H\u00ecnh d\u1ea1ng c\u1ee7a v\u1ea5u cam quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 n\u00e2ng v\u00e0 th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng c\u1ee7a van. B\u1eb1ng c\u00e1ch thay \u0111\u1ed5i thi\u1ebft k\u1ebf tr\u1ee5c cam, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf \u0111\u1ed9ng c\u01a1 c\u00f3 th\u1ec3 t\u1ed1i \u01b0u h\u00f3a c\u00f4ng su\u1ea5t \u0111\u1ea7u ra, m\u00f4-men xo\u1eafn v\u00e0 hi\u1ec7u su\u1ea5t nhi\u00ean li\u1ec7u c\u1ee7a \u0111\u1ed9ng c\u01a1.<\/p>\n

\u1ede \u0111\u1ed9ng c\u01a1 hi\u1ec7u su\u1ea5t cao, h\u1ec7 th\u1ed1ng \u0111i\u1ec1u ph\u1ed1i van bi\u1ebfn thi\u00ean (VVT) th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 n\u00e2ng cao h\u01a1n n\u1eefa hi\u1ec7u su\u1ea5t \u0111\u1ed9ng c\u01a1. H\u1ec7 th\u1ed1ng VVT cho ph\u00e9p \u0111i\u1ec1u ch\u1ec9nh th\u1eddi gian m\u1edf van v\u00e0 \u0111\u1ed9 n\u00e2ng, t\u00f9y thu\u1ed9c v\u00e0o \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh c\u1ee7a \u0111\u1ed9ng c\u01a1. C\u00f4ng ngh\u1ec7 n\u00e0y cho ph\u00e9p \u0111\u1ed9ng c\u01a1 cung c\u1ea5p nhi\u1ec1u c\u00f4ng su\u1ea5t h\u01a1n \u1edf t\u1ed1c \u0111\u1ed9 RPM cao trong khi v\u1eabn duy tr\u00ec hi\u1ec7u su\u1ea5t s\u1eed d\u1ee5ng nhi\u00ean li\u1ec7u \u1edf t\u1ed1c \u0111\u1ed9 RPM th\u1ea5p h\u01a1n.<\/p>\n

T\u00f3m l\u1ea1i, van \u0111\u1ed9ng c\u01a1 l\u00e0 b\u1ed9 ph\u1eadn quan tr\u1ecdng gi\u00fap ki\u1ec3m so\u00e1t lu\u1ed3ng kh\u00f4ng kh\u00ed v\u00e0 nhi\u00ean li\u1ec7u v\u00e0o bu\u1ed3ng \u0111\u1ed1t v\u00e0 th\u1ea3i kh\u00ed th\u1ea3i. Th\u1eddi gian v\u00e0 ho\u1ea1t \u0111\u1ed9ng ch\u00ednh x\u00e1c c\u1ee7a ch\u00fang r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3 c\u1ee7a \u0111\u1ed9ng c\u01a1 \u0111\u1ed1t trong. Hi\u1ec3u \u0111\u01b0\u1ee3c nh\u1eefng ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 van \u0111\u1ed9ng c\u01a1 s\u1ebd mang l\u1ea1i c\u00e1i nh\u00ecn s\u00e2u s\u1eafc c\u00f3 gi\u00e1 tr\u1ecb v\u1ec1 ho\u1ea1t \u0111\u1ed9ng ph\u1ee9c t\u1ea1p c\u1ee7a nh\u1eefng c\u1ed7 m\u00e1y \u0111\u00e1ng ch\u00fa \u00fd n\u00e0y.<\/p>\n","protected":false},"excerpt":{"rendered":"

“Gi\u1ea3i ph\u00f3ng s\u1ee9c m\u1ea1nh: Kh\u00e1m ph\u00e1 c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a van \u0111\u1ed9ng c\u01a1” T\u00ecm hi\u1ec3u kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n v\u1ec1 van \u0111\u1ed9ng c\u01a1 T\u00ecm hi\u1ec3u c\u01a1 b\u1ea3n v\u1ec1 van \u0111\u1ed9ng c\u01a1 Van \u0111\u1ed9ng c\u01a1 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u1ed9ng c\u01a1 \u0111\u1ed1t trong. Nh\u1eefng b\u1ed9 ph\u1eadn nh\u1ecf nh\u01b0ng c\u00f3…<\/p>\n","protected":false},"author":1,"featured_media":1218,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false},"categories":[1],"tags":[],"translation":{"provider":"WPGlobus","version":"2.12.0","language":"vi","enabled_languages":["en","zh","es","de","fr","ru","pt","ar","ja","ko","it","id","hi","th","vi","tr"],"languages":{"en":{"title":true,"content":true,"excerpt":false},"zh":{"title":true,"content":true,"excerpt":false},"es":{"title":true,"content":true,"excerpt":false},"de":{"title":true,"content":true,"excerpt":false},"fr":{"title":true,"content":true,"excerpt":false},"ru":{"title":true,"content":true,"excerpt":false},"pt":{"title":true,"content":true,"excerpt":false},"ar":{"title":true,"content":true,"excerpt":false},"ja":{"title":true,"content":true,"excerpt":false},"ko":{"title":true,"content":true,"excerpt":false},"it":{"title":true,"content":true,"excerpt":false},"id":{"title":true,"content":true,"excerpt":false},"hi":{"title":true,"content":true,"excerpt":false},"th":{"title":true,"content":true,"excerpt":false},"vi":{"title":true,"content":true,"excerpt":false},"tr":{"title":true,"content":true,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts\/4772"}],"collection":[{"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/comments?post=4772"}],"version-history":[{"count":17,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts\/4772\/revisions"}],"predecessor-version":[{"id":5233,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts\/4772\/revisions\/5233"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/media\/1218"}],"wp:attachment":[{"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/media?parent=4772"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/categories?post=4772"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/tags?post=4772"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}