{"id":13837,"date":"2021-03-17T16:30:36","date_gmt":"2021-03-17T09:30:36","guid":{"rendered":"https:\/\/www.okxe.vn\/blog\/?p=13837"},"modified":"2024-05-21T11:00:03","modified_gmt":"2024-05-21T04:00:03","slug":"so-sanh-dohc-va-sohc","status":"publish","type":"post","link":"http:\/\/54.169.97.118\/blog\/ky-thuat-xe\/so-sanh-dohc-va-sohc","title":{"rendered":"So s\u00e1nh DOHC v\u00e0 SOHC &#8211; M\u00e8o n\u00e0o c\u1eafn m\u1ec9u n\u00e0o?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_60 ez-toc-wrap-center counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >N\u1ed9i Dung T&oacute;m T\u1eaft B&agrave;i Vi\u1ebft<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\" role=\"button\"><label for=\"item-69dac67460aa6\" ><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #000000;color:#000000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #000000;color:#000000\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input aria-label=\"Toggle\" aria-label=\"item-69dac67460aa6\"  type=\"checkbox\" id=\"item-69dac67460aa6\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"http:\/\/54.169.97.118\/blog\/ky-thuat-xe\/so-sanh-dohc-va-sohc\/#Tong_quan_ve_dong_co_DOHC_va_SOHC\" title=\"T\u1ed5ng quan v\u1ec1 \u0111\u1ed9ng c\u01a1 DOHC v\u00e0 SOHC\">T\u1ed5ng quan v\u1ec1 \u0111\u1ed9ng c\u01a1 DOHC v\u00e0 SOHC<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"http:\/\/54.169.97.118\/blog\/ky-thuat-xe\/so-sanh-dohc-va-sohc\/#Dong_co_DOHC_la_gi\" title=\"\u0110\u1ed9ng c\u01a1 DOHC l\u00e0 g\u00ec?\">\u0110\u1ed9ng c\u01a1 DOHC l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"http:\/\/54.169.97.118\/blog\/ky-thuat-xe\/so-sanh-dohc-va-sohc\/#Dong_co_SOHC_la_gi\" title=\"\u0110\u1ed9ng c\u01a1 SOHC l\u00e0 g\u00ec?\">\u0110\u1ed9ng c\u01a1 SOHC l\u00e0 g\u00ec?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"http:\/\/54.169.97.118\/blog\/ky-thuat-xe\/so-sanh-dohc-va-sohc\/#So_sanh_DOHC_va_SOHC\" title=\"So s\u00e1nh DOHC v\u00e0 SOHC\">So s\u00e1nh DOHC v\u00e0 SOHC<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"http:\/\/54.169.97.118\/blog\/ky-thuat-xe\/so-sanh-dohc-va-sohc\/#So_sanh_hai_dong_co\" title=\"So s\u00e1nh hai \u0111\u1ed9ng c\u01a1\">So s\u00e1nh hai \u0111\u1ed9ng c\u01a1<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"http:\/\/54.169.97.118\/blog\/ky-thuat-xe\/so-sanh-dohc-va-sohc\/#Tom_tat_uu_nhuoc_diem_cua_hai_dong_co\" title=\"T\u00f3m t\u1eaft \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a hai \u0111\u1ed9ng c\u01a1\">T\u00f3m t\u1eaft \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a hai \u0111\u1ed9ng c\u01a1<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"http:\/\/54.169.97.118\/blog\/ky-thuat-xe\/so-sanh-dohc-va-sohc\/#Cac_dong_xe_pho_bien_tai_Viet_Nam_duoc_trang_bi_dong_co_gi\" title=\"C\u00e1c d\u00f2ng xe ph\u1ed5 bi\u1ebfn t\u1ea1i Vi\u1ec7t Nam \u0111\u01b0\u1ee3c trang b\u1ecb \u0111\u1ed9ng c\u01a1 g\u00ec?\">C\u00e1c d\u00f2ng xe ph\u1ed5 bi\u1ebfn t\u1ea1i Vi\u1ec7t Nam \u0111\u01b0\u1ee3c trang b\u1ecb \u0111\u1ed9ng c\u01a1 g\u00ec?<\/a><\/li><\/ul><\/nav><\/div>\n<p>T\u1ea1i sao \u0111\u1ed9ng c\u01a1 DOHC l\u1ea1i c\u00f3 n\u01b0\u1edbc \u0111\u1ec1 kh\u00f4ng \u1ea5n t\u01b0\u1ee3ng nh\u01b0 \u0111\u1ed9ng c\u01a1 SOHC? T\u1ea1i sao \u0111\u1ed9ng c\u01a1 DOHC l\u1ea1i c\u00f3 \u0111\u1ed9 tr\u1ec5 h\u01a1n? T\u1ea5t c\u1ea3 s\u1ebd \u0111\u01b0\u1ee3c tr\u1ea3 l\u1eddi trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Tong_quan_ve_dong_co_DOHC_va_SOHC\"><\/span><strong>T\u1ed5ng quan v\u1ec1 \u0111\u1ed9ng c\u01a1 DOHC v\u00e0 SOHC<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u1ea7u ti\u00ean, Okxe s\u1ebd \u0111i\u1ec3m qua v\u1ec1 c\u00e1ch b\u1ed1 tr\u00ed tr\u1ee5c cam b\u1edfi l\u1ebd n\u00f3 s\u1ebd li\u00ean quan \u0111\u1ebfn \u201cOHC\u201d c\u00f3 trong 2 lo\u1ea1i \u0111\u1ed9ng c\u01a1 DOHC v\u00e0 SOHC. Theo \u0111\u00f3, khi tr\u1ee5c cam \u0111i\u1ec1u khi\u1ec3n c\u00e1c van \u0111\u00f3ng\/m\u1edf ra \u0111\u1eddi th\u00ec c\u00f3 hai thi\u1ebft k\u1ebf ch\u00ednh l\u00e0 OHC v\u00e0 OHV. C\u1ee5 th\u1ec3:<\/p>\n<p>OHV l\u00e0 t\u1eeb vi\u1ebft t\u1eaft c\u1ee7a c\u1ee5m t\u1eeb Overhead Valve. \u0110\u00e2y l\u00e0 lo\u1ea1i tr\u1ee5c cam \u0111\u01b0\u1ee3c \u0111\u1eb7t ph\u00eda d\u01b0\u1edbi g\u1ea7n tr\u1ee5c khu\u1ef7u. Tr\u1ee5c cam n\u00e0y s\u1ebd \u0111i\u1ec1u khi\u1ec3n gi\u00e1n ti\u1ebfp c\u00e1c xupap th\u00f4ng qua c\u00f2 m\u1ed5 v\u00e0 h\u1ec7 th\u1ed1ng d\u0169a kh\u00e1 c\u1ed3ng k\u1ec1nh. Ki\u1ec3u thi\u1ebft k\u1ebf n\u00e0y \u0111\u00e3 tr\u1edf n\u00ean l\u1ed7i th\u1eddi v\u00ec n\u00f3 qu\u00e1 ph\u1ee9c t\u1ea1p v\u00e0 ch\u1ec9 th\u00edch h\u1ee3p v\u1edbi c\u00e1c lo\u1ea1i \u0111\u1ed9ng c\u01a1 c\u00f3 v\u00f2ng tua th\u1ea5p m\u00e0 th\u00f4i. B\u1edfi l\u1ebd, lo\u1ea1i tr\u1ee5c cam n\u00e0y c\u00f3 qu\u00e1 nhi\u1ec1u chi ti\u1ebft t\u1ea1o qu\u00e1n t\u00ednh. Khi\u1ebfn ch\u00fang kh\u00f4ng h\u1ee3p v\u1edbi nh\u1eefng lo\u1ea1i \u0111\u1ed9ng c\u01a1 c\u00f3 v\u00f2ng tua cao.<\/p>\n<p>OHC l\u00e0 t\u1eeb vi\u1ebft t\u1eaft c\u1ee7a c\u1ee5m t\u1eeb Overhead Camshaft. \u0110\u00e2y l\u00e0 lo\u1ea1i tr\u1ee5c cam \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf ph\u00eda tr\u00ean c\u1ee7a bu\u1ed3ng \u0111\u1ed1t. Tr\u1ee5c cam n\u00e0y s\u1ebd \u0111i\u1ec1u khi\u1ec3n tr\u1ef1c ti\u1ebfp c\u00e1c xupap b\u1eb1ng c\u00f2 m\u1ed5 ho\u1eb7c g\u1ed1i cam. \u0110\u00e2y ch\u00ednh l\u00e0 ki\u1ec3u b\u1ed1 tr\u00ed tr\u1ee5c cam tr\u00ean c\u1ea3 hai \u0111\u1ed9ng c\u01a1 DOHC v\u00e0 SOHC. V\u1eady DOHC kh\u00e1c SOHC \u1edf ch\u1ed7 n\u00e0o?<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Dong_co_DOHC_la_gi\"><\/span><strong>\u0110\u1ed9ng c\u01a1 DOHC l\u00e0 g\u00ec?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img decoding=\"async\" data-src=\"https:\/\/lh3.googleusercontent.com\/-xhzgOlIgh3hO8cmeES-UTXFmOwOHz8B8yHoHjeoZM3V5kwDzllDlbOJ7USCfNSAgM8MPv7_j7BJX8r5ubU61jSsrA6dWI5JARzfSlYRRWXCTU2qat1uglWvnCkCIaArMeVIXr33\" width=\"624\" height=\"468\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" style=\"--smush-placeholder-width: 624px; --smush-placeholder-aspect-ratio: 624\/468;\" \/><\/p>\n<p><em>\u0110\u1ed9ng c\u01a1 DOHC<\/em><\/p>\n<p>DOHC t\u00ean \u0111\u1ea7y \u0111\u1ee7 l\u00e0 Dual Overhead Camshaft. DOHC l\u00e0 lo\u1ea1i tr\u1ee5c cam \u0111\u01b0\u1ee3c ra \u0111\u1eddi v\u1edbi m\u1ee5c \u0111\u00edch lo\u1ea1i b\u1ecf nh\u1eefng \u0111i\u1ec3m y\u1ebfu c\u1ee7a SOHC m\u1ed7i khi v\u00f2ng tua m\u00e1y cao. C\u00e1c van t\u1ea1i tr\u1ee5c cam DOHC \u0111\u1ec1u \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1edfi 2 tr\u1ee5c cam. 1 tr\u1ee5c cam cho van x\u1ea3 v\u00e0 1 tr\u1ee5c cam cho van n\u1ea1p.<\/p>\n<p>M\u1ee5c \u0111\u00edch c\u1ee7a thi\u1ebft k\u1ebf DOHC l\u00e0 t\u0103ng s\u1ed1 l\u01b0\u1ee3ng van tr\u00ean m\u1ed7i xi-lanh v\u00ec m\u1ed7i xi-lanh tr\u00ean lo\u1ea1i \u0111\u1ed9ng c\u01a1 n\u00e0y c\u00f3 th\u1ec3 b\u1ed1 tr\u00ed 4 van. \u0110i\u1ec1u n\u00e0y s\u1ebd gi\u00fap xe d\u1ec5 d\u00e0ng \u0111\u1ea1t v\u00f2ng tua m\u00e1y c\u1ef1c \u0111\u1ea1i \u0111\u1ed3ng th\u1eddi c\u00e1c xupap c\u0169ng \u1edf nh\u1eefng v\u1ecb tr\u00ed t\u1ed1i \u01b0u l\u00e0m t\u0103ng kh\u1ea3 n\u0103ng v\u1eadn h\u00e0nh.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Dong_co_SOHC_la_gi\"><\/span><strong>\u0110\u1ed9ng c\u01a1 SOHC l\u00e0 g\u00ec?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img decoding=\"async\" data-src=\"https:\/\/lh3.googleusercontent.com\/AwQeD116q454wLS41cn2WRDpMgT6qEDNgI-On2WoxxCpkqgEuMwxfvzocHW_n5h020djww6qqAEMM4gpVteRZzuh5Q91ZfjCsNZ0g1rmwJlikNLxP0kuzSqkJ19pfv2ELOLoSO6N\" width=\"624\" height=\"721\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" style=\"--smush-placeholder-width: 624px; --smush-placeholder-aspect-ratio: 624\/721;\" \/><\/p>\n<p><em>\u0110\u1ed9ng c\u01a1 SOHC<\/em><\/p>\n<p>SOHC t\u00ean \u0111\u1ea7y \u0111\u1ee7 l\u00e0 Single Overhead Camshaft. Tr\u00ean tr\u1ee5c cam \u0111\u01a1n SOHC, nh\u00e0 s\u1ea3n xu\u1ea5t ch\u1ec9 b\u1ed1 tr\u00ed 2 xupap. C\u1ee5 th\u1ec3 l\u00e0 g\u1ed1i cam s\u1ebd \u0111\u1ea9y tr\u1ef1c ti\u1ebfp c\u00e1c xupap. Do \u0111\u00f3, m\u1ed7i khi mu\u1ed1n t\u0103ng th\u00eam c\u1eeda n\u1ea1p v\u00e0 \u0111\u00f3ng l\u00ean th\u00ec b\u1eaft bu\u1ed9c c\u00e1c k\u1ef9 s\u01b0 s\u1ebd ph\u1ea3i b\u1ed5 sung th\u00eam h\u1ec7 th\u1ed1ng c\u00f2 m\u1ed5. Tr\u1ee5c cam duy nh\u1ea5t n\u00e0y v\u1eabn s\u1ebd ph\u1ea3i \u0111\u1ee9ng \u1edf gi\u1eefa \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n 2 c\u00f2 m\u1ed5. \u0110\u00e2y l\u00e0 l\u00fd do khi\u1ebfn cho bugi kh\u00f4ng th\u1ec3 \u0111\u1eb7t tr\u1ef1c ti\u1ebfp tr\u00ean bu\u1ed3ng \u0111\u1ed1t.<\/p>\n<p>Tu\u1ef3 v\u00e0o m\u1ee5c \u0111\u00edch v\u1eadn h\u00e0nh kh\u00e1c nhau m\u00e0 c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t s\u1ebd quy\u1ebft \u0111\u1ecbnh lo\u1ea1i \u0111\u1ed9ng c\u01a1 v\u00e0 tr\u1ee5c cam s\u1ebd trang b\u1ecb cho chi\u1ebfc xe \u0111\u00f3. V\u00ed d\u1ee5, chi\u1ebfc Yamaha Exciter h\u01b0\u1edbng \u0111\u1ebfn m\u1ee5c ti\u00eau l\u00e0 \u201c\u00f4ng vua \u0111\u01b0\u1eddng ph\u1ed1\u201d n\u00ean Yamaha \u0111\u00e3 quy\u1ebft \u0111\u1ecbnh l\u1ef1a ch\u1ecdn \u0111\u1ed9ng c\u01a1 SOHC \u0111\u1ec3 cho c\u1ea3m gi\u00e1c l\u01b0\u1edbt kho\u1ebb h\u01a1n d\u00f9 \u0111i \u1edf t\u1ed1c \u0111\u1ed9 th\u1ea5p. C\u00f2n Winner l\u1ea1i h\u01b0\u1edbng \u0111\u1ebfn l\u00e0 chinh ph\u1ee5c c\u00e1c \u0111o\u1ea1n \u0111\u01b0\u1eddng tr\u01b0\u1eddng n\u00ean Honda \u0111\u00e3 trang b\u1ecb \u0111\u1ed9ng c\u01a1 DOHC \u0111\u1ec3 m\u1ed7i khi v\u1eadn h\u00e0nh \u1edf v\u00f2ng tua m\u00e1y cao h\u01a1n \u0111\u01b0\u1ee3c \u1ed5n \u0111\u1ecbnh h\u01a1n. Tuy nhi\u00ean, hi\u1ec7n nay c\u00f3 kh\u00e1 nhi\u1ec1u nh\u00e0 s\u1ea3n xu\u1ea5t \u0111ang t\u00ecm c\u00e1ch \u0111\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 nh\u1ea1y ga c\u1ee7a tr\u1ee5c DOHC m\u1ed7i khi \u1edf v\u00f2ng tua th\u1ea5p c\u0169ng nh\u01b0 c\u00f4ng su\u1ea5t \u0111\u1ea7u ra m\u1ed7i khi \u0111\u1ec1.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"So_sanh_DOHC_va_SOHC\"><\/span><strong>So s\u00e1nh DOHC v\u00e0 SOHC<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"So_sanh_hai_dong_co\"><\/span><strong>So s\u00e1nh hai \u0111\u1ed9ng c\u01a1<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img decoding=\"async\" data-src=\"https:\/\/lh4.googleusercontent.com\/R-aXz5rvWGFyoLpq08UY1UfsIlImhqTFJ9maySwGGGXoj7bvXDFm-vQwRHhOuFJDMdjtga8WW_tVK-dFbfyMWhQifcLM3MbPGox7UDgwDO-X44x6pXWbtvVIxffcXh0rpBibZu7f\" width=\"624\" height=\"351\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" style=\"--smush-placeholder-width: 624px; --smush-placeholder-aspect-ratio: 624\/351;\" \/><\/p>\n<p><em>\u0110\u1ed9ng c\u01a1 n\u00e0o m\u1ea1nh h\u01a1n?<\/em><\/p>\n<p>Tr\u1ee5c cam DOHC c\u00f3 th\u1ec3 l\u1eafp th\u00eam 4 van ho\u1eb7c nhi\u1ec1u h\u01a1n. V\u00ec v\u1eady, d\u00f9 c\u00f3 c\u00f9ng dung t\u00edch nh\u01b0ng c\u00f4ng su\u1ea5t m\u00e0 DOHC \u0111em l\u1ea1i s\u1ebd cao h\u01a1n so v\u1edbi \u0111\u1ed9ng c\u01a1 SOHC ch\u1ec9 cho ph\u00e9p trang b\u1ecb 2 van tr\u00ean m\u1ed7i xi-lanh. Vi\u1ec7c c\u00f3 2 tr\u1ee5c cam ri\u00eang bi\u1ec7t c\u00f9ng v\u1edbi 2 van x\u1ea3 v\u00e0 h\u00fat n\u00ean xe \u0111\u01b0\u1ee3c trang b\u1ecb \u0111\u1ed9ng c\u01a1 DOHC c\u0169ng s\u1ebd ho\u1ea1t \u0111\u1ed9ng \u00eam \u00e1i h\u01a1n v\u00e0 \u00edt n\u00f3ng m\u00e1y h\u01a1n. DOHC s\u1ebd kh\u1eafc ph\u1ee5c c\u00e1c y\u1ebfu \u0111i\u1ec3m c\u1ee7a tr\u1ee5c SOHC nh\u01b0 c\u00f3 nhi\u1ec1u ti\u1ebfng \u1ed3n, nhi\u1ec1u rung \u0111\u1ed9ng v\u00e0 kh\u00f4ng \u1ed5n \u0111\u1ecbnh.<\/p>\n<p>Thi\u1ebft k\u1ebf c\u1ee7a DOHC c\u0169ng \u0111\u00e3 gi\u00fap bugi \u0111\u01b0\u1ee3c \u0111\u1eb7t ch\u00ednh gi\u1eefa \u0111\u1ec9nh bu\u1ed3ng \u0111\u1ed1t. \u0110i\u1ec1u n\u00e0y s\u1ebd gi\u00fap hi\u1ec7u su\u1ea5t \u0111\u00e1nh l\u1eeda \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u ho\u00e1 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 nh\u1ea5t. M\u1ed7i khi \u1edf v\u00f2ng tua m\u00e1y cao, \u0111\u1ed9ng c\u01a1 c\u1ee7a xe s\u1ebd ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh h\u01a1n do kh\u00f4ng qu\u00e1 c\u00f3 nhi\u1ec1u chi ti\u1ebft di chuy\u1ec3n v\u00e0 truy\u1ec1n l\u1ef1c. C\u00e1c g\u00f3c \u0111\u1eb7t xupap c\u0169ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf linh ho\u1ea1t h\u01a1n ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec1u \u0111i\u1ec1u ki\u1ec7n kh\u00e1c nhau. V\u00ed d\u1ee5 nh\u01b0 tr\u1ee5c cam DOHC s\u1ebd \u0111i\u1ec1u ch\u1ec9nh c\u00e1c van \u0111\u00f3ng m\u1edf tr\u1ec5 hay s\u1edbm \u0111\u1ec1u d\u1ec5 d\u00e0ng h\u01a1n SOHC. \u0110\u1ed9ng xe DOHC c\u0169ng ti\u1ebft ki\u1ec7m nhi\u00ean li\u1ec7u h\u01a1n so v\u1edbi SOHC.<\/p>\n<p><img decoding=\"async\" data-src=\"https:\/\/lh3.googleusercontent.com\/kI70oQt0aX9l-ZdUjonvoS7qrlrocFCttpdaTw-UyeG_w1J8hhPIuxnDmF3hN9G3n5AWlS7oxZYyJcR4eCu8SAuvqMzX3SMQbsWA9ApjzWOf5OQ45l4zNy_mQdMSHTo7vN9G3rOF\" width=\"624\" height=\"539\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" style=\"--smush-placeholder-width: 624px; --smush-placeholder-aspect-ratio: 624\/539;\" \/><\/p>\n<p><em>Van bi\u1ebfn thi\u00ean tr\u00ean \u0111\u1ed9ng c\u01a1 DOHC<\/em><\/p>\n<h6>Tuy nhi\u00ean, khi \u1edf v\u00f2ng tua m\u00e1y th\u1ea5p, do ph\u1ea3i \u0111i\u1ec1u khi\u1ec3n c\u1ea3 2 tr\u1ee5c cam n\u00ean m\u00f4-men xo\u1eafn \u0111\u1ea7u ra s\u1ebd b\u1ecb gi\u1ea3m s\u00fat v\u00e0 chuy\u1ec3n \u0111\u1ed9ng tr\u1ee5c cam c\u0169ng kh\u00f3 kh\u0103n h\u01a1n do ch\u00fang c\u00f3 k\u1ebft c\u1ea5u ph\u1ee9c t\u1ea1p h\u01a1n. \u0110\u00e2y l\u00e0 l\u00fd do khi\u1ebfn t\u00ecnh tr\u1ea1ng tr\u1ec5 ga tr\u00ean c\u00e1c m\u1eabu xe s\u1eed d\u1ee5ng \u0111\u1ed9ng c\u01a1 tr\u1ee5c cam DOHC m\u1ed7i khi \u1edf d\u1ea3i tua th\u1ea5p. Ngo\u00e0i ra, chi ph\u00ed b\u1ea3o d\u01b0\u1ee1ng v\u00e0 s\u1ea3n xu\u1ea5t c\u1ee7a DOHC c\u0169ng cao h\u01a1n do ch\u00fang c\u00f3 c\u1ea5u t\u1ea1o ph\u1ee9c t\u1ea1p v\u00e0 y\u00eau c\u1ea7u c\u00f4ng ngh\u1ec7 cao h\u01a1n. Kh\u00f4ng nh\u1eefng v\u1eady, m\u1ed7i khi b\u1ecb h\u01b0 h\u1ecfng l\u1ea1i \u0111\u00f2i h\u1ecfi th\u1ee3 ph\u1ea3i c\u00f3 tay ngh\u1ec1 cao v\u00e0 chi ph\u00ed s\u1eeda ch\u1eefa c\u0169ng cao. V\u1edbi k\u1ebft c\u1ea5u c\u1ed3ng k\u1ec1nh th\u00ec ch\u1eafc ch\u1eafn tr\u1ecdng l\u01b0\u1ee3ng xe s\u1ebd ph\u1ea3i t\u0103ng l\u00ean. \u0110i\u1ec1u n\u00e0y khi\u1ebfn c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t ph\u1ea3i t\u1ed1i gi\u1ea3n m\u1ed9t s\u1ed1 chi ti\u1ebft \u0111\u1ec3 c\u00e2n b\u1eb1ng l\u1ea1i.<\/h6>\n<p><img decoding=\"async\" data-src=\"https:\/\/lh3.googleusercontent.com\/Q4VhUlLq11r9Caj7l_ApzZwRClHE2cxRmuSBDJl1PZr-5wPCYhDERMpRrNrD6MXQn_kSSknp3R6avw9YeL5Lwsrmp5gxFArnSGY-E3VNvGDd_-JNhtunAwdIyaSMd3Rn9QJC0Ysu\" width=\"624\" height=\"364\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" style=\"--smush-placeholder-width: 624px; --smush-placeholder-aspect-ratio: 624\/364;\" \/><\/p>\n<p><em>C\u00e1ch b\u1ed1 tr\u00ed hai lo\u1ea1i \u0111\u1ed9ng c\u01a1<\/em><\/p>\n<h6>Ng\u01b0\u1ee3c l\u1ea1i, l\u1ee3i th\u1ebf c\u1ee7a \u0111\u1ed9ng c\u01a1 SOHC l\u00e0 ch\u1ec9 c\u00f3 1 tr\u1ee5c cam duy nh\u1ea5t \u0111\u1ec3 \u0111\u00f3ng\/m\u1edf van. \u0110i\u1ec1u n\u00e0y khi\u1ebfn cho c\u1ee5c m\u00e1y \u00edt b\u1ecb \u1ea3nh h\u01b0\u1edfng h\u01a1n. \u0110\u1eb7c bi\u1ec7t l\u00e0 khi m\u1ed7i \u0111\u1ed9ng c\u01a1 \u1edf v\u00f2ng tua th\u1ea5p. H\u1ec7 th\u1ed1ng tr\u1ee5c cam n\u00e0y s\u1ebd v\u1eadn h\u00e0nh d\u1ec5 d\u00e0ng h\u01a1n v\u00e0 m\u00f4-men xo\u1eafn \u0111\u1ea7u ra c\u0169ng s\u1ebd l\u1edbn h\u01a1n. \u0110\u00e2y c\u0169ng l\u00e0 l\u00fd do khi\u1ebfn SOHC b\u1ed1c h\u01a1n \u1edf \u201cn\u01b0\u1edbc \u0111\u1ec1\u201d. Ngo\u00e0i ra, do bugi ph\u1ea3i \u0111\u1eb7t \u1edf b\u00ean c\u1ea1nh m\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1eb7t ch\u00ednh gi\u1eefa. N\u00ean hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng nhi\u00ean li\u1ec7u k\u00e9m h\u01a1n h\u1eb3n so v\u1edbi \u0111\u1ed9ng c\u01a1 DOHC. V\u00ec v\u1eady, xe s\u1eed d\u1ee5ng \u0111\u1ed9ng c\u01a1 SOHC th\u01b0\u1eddng hao x\u0103ng h\u01a1n so v\u1edbi \u0111\u1ed9ng c\u01a1 DOHC.<\/h6>\n<p>B\u00ean c\u1ea1nh \u0111\u00f3, do c\u00f3 k\u1ebft c\u1ea5u \u0111\u01a1n gi\u1ea3n n\u00ean chi ph\u00ed s\u1ea3n xu\u1ea5t c\u0169ng nh\u01b0 b\u1ea3o d\u01b0\u1ee1ng c\u1ee7a \u0111\u1ed9ng c\u01a1 SOHC s\u1ebd \u0111\u1ee1 t\u1ed1n chi ph\u00ed h\u01a1n, th\u00edch h\u1ee3p v\u1edbi nh\u1eefng ph\u01b0\u01a1ng ti\u1ec7n di chuy\u1ec3n \u1edf m\u1ee9c v\u1eeba ph\u1ea3i. B\u1edfi l\u1ebd, do l\u00e0 lo\u1ea1i \u0111\u1ed9ng c\u01a1 th\u00f4ng d\u1ee5ng n\u00ean khi h\u1ecfng h\u00f3c d\u1ec5 s\u1eeda ch\u1eefa. Chi ph\u00ed s\u1eeda v\u00e0 thay th\u1ebf c\u0169ng th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi DOHC.<\/p>\n<p>V\u1ec1 \u0111\u1ed9 b\u1ec1n, 2 lo\u1ea1i \u0111\u1ed9ng c\u01a1 n\u00e0y c\u00f3 \u0111\u1ed9 b\u1ec1n b\u1ec9 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nhau. Ng\u01b0\u1eddi s\u1eed d\u1ee5ng ch\u1ec9 c\u1ea7n th\u01b0\u1eddng xuy\u00ean ki\u1ec3m tra hay b\u1ea3o d\u01b0\u1ee1ng h\u1ec7 th\u1ed1ng b\u01a1m nh\u1edbt \u0111\u1ec3 c\u00f3 th\u1ec3 ph\u1ea7n \u0111\u1ea7u quy l\u00e1t \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o b\u01a1m \u0111\u1ee7 nh\u1edbt t\u1eeb \u0111\u00f3 gi\u00fap tr\u1ee5c cam \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7. C\u00e1c b\u1ea1n c\u1ea7n h\u1ea1n ch\u1ebf h\u00e0nh \u0111\u1ed9ng n\u1ed5 m\u00e1y v\u00e0 t\u0103ng ga ngay l\u1eadp t\u1ee9c. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0m chi ti\u1ebft nh\u01b0 tr\u1ee5c c\u01a1 b\u1ecb x\u01b0\u1edbc hay \u0111\u1ed9ng c\u01a1 b\u1ecb h\u1ecfng. C\u00e1c b\u1ea1n n\u00ean \u0111\u1ec3 \u0111\u1ed9ng c\u01a1 ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng t\u1ea3i kho\u1ea3ng 1 ph\u00fat tr\u01b0\u1edbc m\u1ed7i khi di chuy\u1ec3n. \u0110\u1ed3ng th\u1eddi, c\u00e1c b\u1ea1n n\u00ean thay d\u1ea7u nh\u1edbt \u0111\u1ecbnh k\u1ef3 \u0111\u1ec3 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd \u0111\u1ed9ng c\u01a1 nh\u00e9!<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tom_tat_uu_nhuoc_diem_cua_hai_dong_co\"><\/span><strong>T\u00f3m t\u1eaft \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a hai \u0111\u1ed9ng c\u01a1<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img decoding=\"async\" data-src=\"https:\/\/lh4.googleusercontent.com\/5VxBrQfsKSsASSuPqsSc4owhHb3jfbYrK-jT6aSPDUJEfa1KBf-qZsv_I8Ha4WSxQjmg_b3dxtyDwhbzXSwyKrcbrlUTmx0uGgdc2yDGLYMMS1kwPOKWs05aJXLiZvc7nQOKNTvP\" width=\"624\" height=\"351\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" style=\"--smush-placeholder-width: 624px; --smush-placeholder-aspect-ratio: 624\/351;\" \/><\/p>\n<p><em>\u01afu nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a 2 lo\u1ea1i \u0111\u1ed9ng c\u01a1<\/em><\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-13848 lazyload\" data-src=\"https:\/\/www.okxe.vn\/blog\/wp-content\/uploads\/2024\/01\/32_content_news20210317032154_yI7gChFT_o.png\" alt=\"\" width=\"748\" height=\"537\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 748px; --smush-placeholder-aspect-ratio: 748\/537;\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cac_dong_xe_pho_bien_tai_Viet_Nam_duoc_trang_bi_dong_co_gi\"><\/span><strong>C\u00e1c d\u00f2ng xe ph\u1ed5 bi\u1ebfn t\u1ea1i Vi\u1ec7t Nam \u0111\u01b0\u1ee3c trang b\u1ecb \u0111\u1ed9ng c\u01a1 g\u00ec?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img decoding=\"async\" data-src=\"https:\/\/lh3.googleusercontent.com\/ADithF4skUt9SIt3t-UqNAEPZVrJt-vHKE6kaQAAXDgnJQoGPJ60HOSvXbMpNgdaRSl5uoHdmHpqdjyyoxkjtP0onTGiyNRPRHi3-wps6bc9EA34wqciJkrwrSPmXJYjWZcKr8Rh\" width=\"624\" height=\"440\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" style=\"--smush-placeholder-width: 624px; --smush-placeholder-aspect-ratio: 624\/440;\" \/><\/p>\n<p><em>C\u00e1c d\u00f2ng xe ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c trang b\u1ecb \u0111\u1ed9ng c\u01a1 g\u00ec?<\/em><\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-13846 lazyload\" data-src=\"https:\/\/www.okxe.vn\/blog\/wp-content\/uploads\/2024\/01\/32_content_news20210317034845_HzSrGSA3_o.png\" alt=\"\" width=\"638\" height=\"543\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 638px; --smush-placeholder-aspect-ratio: 638\/543;\" \/> <img decoding=\"async\" class=\"aligncenter size-full wp-image-13847 lazyload\" data-src=\"https:\/\/www.okxe.vn\/blog\/wp-content\/uploads\/2024\/01\/32_content_news20210317034849_0UzJF7Ml_o.png\" alt=\"\" width=\"642\" height=\"656\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 642px; --smush-placeholder-aspect-ratio: 642\/656;\" \/><\/p>\n<p>Tr\u00ean \u0111\u00e2y l\u00e0 m\u1ed9t v\u00e0i th\u00f4ng tin v\u1ec1 DOHC v\u00e0 SOHC. C\u0169ng nh\u01b0 \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a hai lo\u1ea1i \u0111\u1ed9ng c\u01a1 n\u00e0y. Hy v\u1ecdng sau b\u00e0i vi\u1ebft n\u00e0y, c\u00e1c b\u1ea1n \u0111\u00e3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 hai lo\u1ea1i \u0111\u1ed9ng c\u01a1 n\u00e0y v\u00e0 c\u00f3 th\u1ec3 tr\u1ea3 l\u1eddi \u0111\u01b0\u1ee3c c\u00e2u h\u1ecfi: \u201cN\u00ean mua xe s\u1eed d\u1ee5ng \u0111\u1ed9ng c\u01a1 DOHC hay SOHC?\u201d \u201cV\u00ec sao xe trang b\u1ecb \u0111\u1ed9ng c\u01a1 SOHC l\u1ea1i ch\u1ea1y b\u1ed1c h\u01a1n?\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u1ea1i sao \u0111\u1ed9ng c\u01a1 DOHC l\u1ea1i c\u00f3 n\u01b0\u1edbc \u0111\u1ec1 kh\u00f4ng \u1ea5n t\u01b0\u1ee3ng nh\u01b0 \u0111\u1ed9ng c\u01a1 SOHC? T\u1ea1i sao \u0111\u1ed9ng c\u01a1 DOHC l\u1ea1i c\u00f3 \u0111\u1ed9 tr\u1ec5 h\u01a1n? T\u1ea5t c\u1ea3 s\u1ebd \u0111\u01b0\u1ee3c tr\u1ea3 l\u1eddi trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y. T\u1ed5ng quan v\u1ec1 \u0111\u1ed9ng c\u01a1 DOHC v\u00e0 SOHC \u0110\u1ea7u ti\u00ean, Okxe s\u1ebd \u0111i\u1ec3m qua v\u1ec1 c\u00e1ch b\u1ed1 tr\u00ed [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":13845,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[161],"tags":[1181],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.5 (Yoast SEO v20.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>So s\u00e1nh DOHC v\u00e0 SOHC<\/title>\n<meta name=\"description\" content=\"N\u1ebfu \u0111am m\u00ea xe c\u1ed9 ch\u1eafc ch\u1eafn c\u00e1c b\u1ea1n s\u1ebd nghe \u0111\u1ebfn c\u1ee5m t\u1eeb \u201c\u0111\u1ed9ng c\u01a1 SOHC\u201d hay \u201c\u0111\u1ed9ng c\u01a1 DOHC\u201d. 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