{"id":5037,"date":"2025-10-10T10:29:22","date_gmt":"2025-10-10T03:29:22","guid":{"rendered":"https:\/\/blueone.vn\/?p=5037"},"modified":"2025-10-11T08:42:29","modified_gmt":"2025-10-11T01:42:29","slug":"vi-sao-xe-tai-can-su-dung-nuoc-ure-de-dat-chuan-khi-thai","status":"publish","type":"post","link":"https:\/\/demo.blueone.vn\/en\/vi-sao-xe-tai-can-su-dung-nuoc-ure-de-dat-chuan-khi-thai\/","title":{"rendered":"Why do trucks need to use urea to meet emission standards?"},"content":{"rendered":"

Kh\u00ed th\u1ea3i NOx<\/strong> \u2013 v\u1ea5n \u0111\u1ec1 l\u1edbn c\u1ee7a \u0111\u1ed9ng c\u01a1 diesel<\/h2>\n

\"V\u00ec<\/p>\n

Xe t\u1ea3i diesel v\u1ed1n n\u1ed5i ti\u1ebfng nh\u1edd kh\u1ea3 n\u0103ng k\u00e9o t\u1ea3i l\u1edbn, b\u1ec1n b\u1ec9 tr\u00ean qu\u00e3ng \u0111\u01b0\u1eddng d\u00e0i v\u00e0 hi\u1ec7u su\u1ea5t nhi\u00ean li\u1ec7u cao. Tuy nhi\u00ean, \u0111i k\u00e8m v\u1edbi nh\u1eefng \u01b0u \u0111i\u1ec3m \u0111\u00f3 l\u00e0 l\u01b0\u1ee3ng kh\u00ed th\u1ea3i \u0111\u1ed9c h\u1ea1i, \u0111\u1eb7c bi\u1ec7t l\u00e0 NOx (Nitrogen Oxides). \u0110\u00e2y l\u00e0 nh\u00f3m kh\u00ed c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y m\u01b0a axit, \u00f4 nhi\u1ec5m kh\u00f4ng kh\u00ed v\u00e0 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn s\u1ee9c kh\u1ecfe con ng\u01b0\u1eddi, \u0111\u1eb7c bi\u1ec7t t\u1ea1i c\u00e1c \u0111\u00f4 th\u1ecb \u0111\u00f4ng \u0111\u00fac.<\/p>\n

Tr\u01b0\u1edbc t\u00ecnh tr\u1ea1ng \u00f4 nhi\u1ec5m ng\u00e0y c\u00e0ng nghi\u00eam tr\u1ecdng, c\u00e1c ti\u00eau chu\u1ea9n kh\u00ed th\u1ea3i qu\u1ed1c t\u1ebf \u2013 t\u1eeb Euro 4, Euro 5 \u0111\u1ebfn Euro 6 \u2013 y\u00eau c\u1ea7u ph\u01b0\u01a1ng ti\u1ec7n ph\u1ea3i gi\u1ea3m l\u01b0\u1ee3ng NOx th\u1ea3i ra m\u1ee9c c\u1ef1c th\u1ea5p. V\u1edbi xe t\u1ea3i ch\u1ea1y \u0111\u01b0\u1eddng d\u00e0i, vi\u1ec7c \u0111\u1ea1t chu\u1ea9n kh\u00ed th\u1ea3i kh\u00f4ng c\u00f2n l\u00e0 l\u1ef1a ch\u1ecdn m\u00e0 tr\u1edf th\u00e0nh y\u00eau c\u1ea7u b\u1eaft bu\u1ed9c \u0111\u1ec3 \u0111\u0103ng ki\u1ec3m v\u00e0 v\u1eadn h\u00e0nh h\u1ee3p ph\u00e1p.<\/p>\n

N\u01b0\u1edbc ure \u2013 ch\u00eca kh\u00f3a cho h\u1ec7 th\u1ed1ng SCR<\/h2>\n

H\u1ec7 th\u1ed1ng SCR v\u1eadn h\u00e0nh ra sao<\/strong><\/p>\n

\u0110\u1ec3 gi\u1ea3m l\u01b0\u1ee3ng NOx, nhi\u1ec1u xe t\u1ea3i \u0111\u1eddi m\u1edbi trang b\u1ecb h\u1ec7 th\u1ed1ng SCR (Selective Catalytic Reduction). \u0110\u00e2y l\u00e0 c\u00f4ng ngh\u1ec7 x\u1eed l\u00fd kh\u00ed th\u1ea3i ti\u00ean ti\u1ebfn, s\u1eed d\u1ee5ng ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc \u0111\u1ec3 bi\u1ebfn c\u00e1c kh\u00ed \u0111\u1ed9c th\u00e0nh c\u00e1c ch\u1ea5t v\u00f4 h\u1ea1i. Trong c\u01a1 ch\u1ebf n\u00e0y, n\u01b0\u1edbc ure \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng.<\/p>\n

Khi phun v\u00e0o lu\u1ed3ng kh\u00ed th\u1ea3i n\u00f3ng, dung d\u1ecbch ure ph\u00e2n h\u1ee7y t\u1ea1o ra amoniac (NH\u2083). Amoniac sau \u0111\u00f3 ph\u1ea3n \u1ee9ng v\u1edbi NOx, chuy\u1ec3n h\u00f3a th\u00e0nh nit\u01a1 (N\u2082) v\u00e0 h\u01a1i n\u01b0\u1edbc (H\u2082O), ho\u00e0n to\u00e0n an to\u00e0n v\u1edbi m\u00f4i tr\u01b0\u1eddng. Nh\u1edd c\u01a1 ch\u1ebf n\u00e0y, h\u1ec7 th\u1ed1ng SCR c\u00f3 th\u1ec3 gi\u1ea3m t\u1edbi 80\u201390% l\u01b0\u1ee3ng NOx, gi\u00fap xe t\u1ea3i \u0111\u00e1p \u1ee9ng ti\u00eau chu\u1ea9n Euro m\u00e0 v\u1eabn duy tr\u00ec hi\u1ec7u su\u1ea5t v\u1eadn h\u00e0nh.<\/p>\n

T\u1ea1i sao xe t\u1ea3i kh\u00f4ng th\u1ec3 b\u1ecf qua n\u01b0\u1edbc ure<\/h2>\n
\"T\u1ea1i
T\u1ea1i sao xe t\u1ea3i kh\u00f4ng th\u1ec3 b\u1ecf qua n\u01b0\u1edbc ure<\/em><\/figcaption><\/figure>\n

Xe t\u1ea3i hi\u1ec7n \u0111\u1ea1i, \u0111\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng ph\u01b0\u01a1ng ti\u1ec7n ch\u1edf h\u00e0ng n\u1eb7ng, ph\u1ea3i v\u1eadn h\u00e0nh li\u00ean t\u1ee5c tr\u00ean c\u00e1c tuy\u1ebfn \u0111\u01b0\u1eddng d\u00e0i. Thi\u1ebfu n\u01b0\u1edbc ure, h\u1ec7 th\u1ed1ng SCR g\u1ea7n nh\u01b0 v\u00f4 d\u1ee5ng. C\u00e1c c\u1ea3m bi\u1ebfn s\u1ebd li\u00ean t\u1ee5c b\u00e1o l\u1ed7i, m\u1ed9t s\u1ed1 xe th\u1eadm ch\u00ed gi\u1ea3m c\u00f4ng su\u1ea5t ho\u1eb7c gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9 \u0111\u1ec3 b\u1ea3o v\u1ec7 \u0111\u1ed9ng c\u01a1.<\/p>\n

Ngo\u00e0i ra, vi\u1ec7c kh\u00f4ng s\u1eed d\u1ee5ng dung d\u1ecbch \u0111\u1ea1t chu\u1ea9n c\u00f2n khi\u1ebfn b\u1ed9 x\u00fac t\u00e1c SCR nhanh h\u1ecfng, v\u00f2i phun t\u1eafc ngh\u1ebdn, c\u1ea3m bi\u1ebfn NOx h\u01b0 h\u1ea1i. Chi ph\u00ed s\u1eeda ch\u1eefa ho\u1eb7c thay th\u1ebf c\u00e1c b\u1ed9 ph\u1eadn n\u00e0y th\u01b0\u1eddng cao g\u1ea5p nhi\u1ec1u l\u1ea7n so v\u1edbi vi\u1ec7c s\u1eed d\u1ee5ng n\u01b0\u1edbc ure \u0111\u1ea1t chu\u1ea9n t\u1eeb \u0111\u1ea7u.<\/p>\n

\u0110i\u1ec1u n\u00e0y cho th\u1ea5y, v\u1edbi xe t\u1ea3i, n\u01b0\u1edbc ure kh\u00f4ng ph\u1ea3i l\u1ef1a ch\u1ecdn m\u00e0 l\u00e0 y\u00eau c\u1ea7u v\u1eadn h\u00e0nh b\u1eaft bu\u1ed9c.<\/p>\n

N\u01b0\u1edbc ure v\u00e0 AdBlue \u2013 \u0111i\u1ec3m c\u1ea7n hi\u1ec3u r\u00f5<\/h2>\n

Kh\u00f4ng \u00edt ng\u01b0\u1eddi nh\u1ea7m l\u1eabn gi\u1eefa n\u01b0\u1edbc ure v\u00e0 AdBlue. V\u1ec1 b\u1ea3n ch\u1ea5t, AdBlue\u00ae l\u00e0 t\u00ean th\u01b0\u01a1ng m\u1ea1i c\u1ee7a dung d\u1ecbch n\u01b0\u1edbc ure \u0111\u1ea1t chu\u1ea9n ch\u00e2u \u00c2u. T\u1ea5t c\u1ea3 AdBlue \u0111\u1ec1u l\u00e0 n\u01b0\u1edbc ure, nh\u01b0ng kh\u00f4ng ph\u1ea3i n\u01b0\u1edbc ure n\u00e0o c\u0169ng l\u00e0 AdBlue.<\/p>\n

C\u00e1c dung d\u1ecbch tr\u00f4i n\u1ed5i tr\u00ean th\u1ecb tr\u01b0\u1eddng, pha t\u1ea1p ch\u1ea5t ho\u1eb7c pha lo\u00e3ng, kh\u00f4ng \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3 trong h\u1ec7 th\u1ed1ng SCR, c\u00f3 th\u1ec3 g\u00e2y h\u1ecfng c\u1ea3m bi\u1ebfn ho\u1eb7c b\u1ed9 x\u00fac t\u00e1c. Do \u0111\u00f3, t\u00e0i x\u1ebf v\u00e0 doanh nghi\u1ec7p v\u1eadn t\u1ea3i c\u1ea7n ch\u1ecdn dung d\u1ecbch \u0111\u1ea1t chu\u1ea9n ISO 22241, \u0111\u1ea3m b\u1ea3o h\u00e0m l\u01b0\u1ee3ng ure \u0111\u00fang, n\u01b0\u1edbc kh\u1eed ion s\u1ea1ch, kh\u00f4ng t\u1ea1p ch\u1ea5t kim lo\u1ea1i.<\/p>\n

Xem th\u00eam: S\u1ea3n ph\u1ea9m N\u01b0\u1edbc Ure<\/strong><\/a> \u0111\u1ea1t chu\u1ea9n<\/em><\/p>\n