{"id":5511,"date":"2025-09-28T18:54:35","date_gmt":"2025-09-29T02:54:35","guid":{"rendered":"https:\/\/3waycatalyst.com\/?p=5511"},"modified":"2025-10-08T18:05:14","modified_gmt":"2025-10-09T02:05:14","slug":"history-of-the-catalytic-converter-three-way-evolution","status":"publish","type":"post","link":"https:\/\/3waycatalyst.com\/vi\/history-of-the-catalytic-converter-three-way-evolution\/","title":{"rendered":"L\u1ecbch s\u1eed c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c \u2014 S\u1ef1 ph\u00e1t tri\u1ec3n ba chi\u1ec1u"},"content":{"rendered":"<p>Kh\u00e1m ph\u00e1 l\u1ecbch s\u1eed h\u1ea5p d\u1eabn c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c, t\u1eeb nh\u1eefng nguy\u00ean m\u1eabu \u0111\u1ea7u ti\u00ean cho \u0111\u1ebfn b\u1ed9 chuy\u1ec3n \u0111\u1ed5i hi\u1ec7u su\u1ea5t cao ng\u00e0y nay <a href=\"https:\/\/3waycatalyst.com\/vi\/three-way-catalytic-converter-twc\/\">h\u1ec7 th\u1ed1ng ba chi\u1ec1u<\/a>. T\u00ecm hi\u1ec3u c\u00e1ch ph\u00e1t minh n\u00e0y \u0111\u00e3 c\u00e1ch m\u1ea1ng h\u00f3a vi\u1ec7c ki\u1ec3m so\u00e1t kh\u00ed th\u1ea3i, khoa h\u1ecdc \u0111\u1eb1ng sau n\u00f3 v\u00e0 t\u01b0\u01a1ng lai c\u1ee7a n\u00f3 trong m\u1ed9t th\u1ebf gi\u1edbi \u0111ang chuy\u1ec3n d\u1ecbch sang xe \u0111i\u1ec7n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"why-catalytic-converters-became-necessary\">T\u1ea1i sao b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c tr\u1edf n\u00ean c\u1ea7n thi\u1ebft<\/h2>\n\n\n\n<p>\u0110\u1ebfn gi\u1eefa th\u1ebf k\u1ef7 20, \u00f4 t\u00f4 \u0111\u00e3 tr\u1edf th\u00e0nh bi\u1ec3u t\u01b0\u1ee3ng c\u1ee7a t\u1ef1 do v\u00e0 t\u0103ng tr\u01b0\u1edfng kinh t\u1ebf. Nh\u01b0ng v\u1edbi h\u00e0ng tri\u1ec7u ph\u01b0\u01a1ng ti\u1ec7n l\u01b0u th\u00f4ng tr\u00ean \u0111\u01b0\u1eddng, m\u1ed9t th\u1ef1c t\u1ebf kh\u00e1c \u0111\u00e3 xu\u1ea5t hi\u1ec7n: kh\u00ed th\u1ea3i \u0111\u1ed9c h\u1ea1i. C\u00e1c th\u00e0nh ph\u1ed1 nh\u01b0 Los Angeles ph\u1ea3i h\u1ee9ng ch\u1ecbu kh\u00f3i b\u1ee5i d\u00e0y \u0111\u1eb7c \u0111\u1ebfn m\u1ee9c ng\u01b0\u1eddi d\u00e2n v\u00ed n\u00f3 nh\u01b0 s\u01b0\u01a1ng m\u00f9 tr\u1ed9n l\u1eabn v\u1edbi cao su ch\u00e1y. C\u00e1c nh\u00e0 khoa h\u1ecdc ph\u00e1t hi\u1ec7n ra r\u1eb1ng hydrocarbon, carbon monoxide v\u00e0 nit\u01a1 oxit k\u1ebft h\u1ee3p d\u01b0\u1edbi \u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi t\u1ea1o th\u00e0nh \u00f4z\u00f4n m\u1eb7t \u0111\u1ea5t v\u00e0 s\u01b0\u01a1ng m\u00f9 quang h\u00f3a. H\u1eadu qu\u1ea3 \u0111\u1ed1i v\u1edbi s\u1ee9c kh\u1ecfe r\u1ea5t nghi\u00eam tr\u1ecdng \u2014 hen suy\u1ec5n, k\u00edch \u1ee9ng m\u1eaft v\u00e0 nguy c\u01a1 tim m\u1ea1ch. Ch\u00ednh quy\u1ec1n, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u1edf California, b\u1eaft \u0111\u1ea7u t\u00ecm ki\u1ebfm gi\u1ea3i ph\u00e1p c\u1eaft gi\u1ea3m kh\u00ed th\u1ea3i ngay t\u1eeb ngu\u1ed3n. Gi\u1ea3i ph\u00e1p \u0111\u01b0\u1ee3c \u0111\u01b0a ra d\u01b0\u1edbi d\u1ea1ng b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c, nh\u01b0ng ph\u1ea3i m\u1ea5t h\u00e0ng th\u1eadp k\u1ef7 th\u1eed nghi\u1ec7m, sai s\u00f3t v\u00e0 s\u1ef1 ki\u00ean tr\u00ec c\u1ee7a khoa h\u1ecdc.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"the-first-catalysts-and-experiments-early-20th-century-\">C\u00e1c ch\u1ea5t x\u00fac t\u00e1c v\u00e0 th\u00ed nghi\u1ec7m \u0111\u1ea7u ti\u00ean (\u0110\u1ea7u th\u1ebf k\u1ef7 20)<\/h2>\n\n\n\n<p>M\u1eb7c d\u00f9 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c \u00f4 t\u00f4 \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t v\u00e0o nh\u1eefng n\u0103m 1970, nh\u01b0ng ngu\u1ed3n g\u1ed1c c\u1ee7a ch\u00fang \u0111\u00e3 b\u1eaft ngu\u1ed3n t\u1eeb xa h\u01a1n nhi\u1ec1u. K\u1ef9 s\u01b0 ng\u01b0\u1eddi Ph\u00e1p Eug\u00e8ne Houdry, ng\u01b0\u1eddi ti\u00ean phong trong l\u0129nh v\u1ef1c cracking x\u00fac t\u00e1c trong l\u1ecdc d\u1ea7u, \u0111\u00e3 nh\u1eadn ra ti\u1ec1m n\u0103ng c\u1ee7a ch\u1ea5t x\u00fac t\u00e1c trong vi\u1ec7c gi\u1ea3m kh\u00ed th\u1ea3i. V\u00e0o nh\u1eefng n\u0103m 1950, Houdry \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea5p b\u1eb1ng s\u00e1ng ch\u1ebf cho c\u00e1c thi\u1ebft b\u1ecb ki\u1ec3m so\u00e1t ch\u1ea5t \u00f4 nhi\u1ec5m t\u1eeb \u1ed1ng kh\u00f3i c\u00f4ng nghi\u1ec7p v\u00e0 sau \u0111\u00f3 l\u00e0 cho \u0111\u1ed9ng c\u01a1 x\u0103ng. Tuy nhi\u00ean, c\u00f4ng ngh\u1ec7 n\u00e0y g\u1eb7p ph\u1ea3i nh\u1eefng h\u1ea1n ch\u1ebf nghi\u00eam tr\u1ecdng. C\u00e1c ch\u1ea5t x\u00fac t\u00e1c ban \u0111\u1ea7u kh\u00f4ng b\u1ec1n, v\u00e0 x\u0103ng th\u1eddi \u0111\u00f3 ch\u1ee9a tetraethyl ch\u00ec \u2014 m\u1ed9t ch\u1ea5t ph\u1ee5 gia nhi\u00ean li\u1ec7u nhanh ch\u00f3ng \u201cnhi\u1ec5m \u0111\u1ed9c\u201d b\u1ec1 m\u1eb7t ch\u1ea5t x\u00fac t\u00e1c, khi\u1ebfn ch\u00fang tr\u1edf n\u00ean v\u00f4 d\u1ee5ng. Nh\u1eefng th\u00ed nghi\u1ec7m \u0111\u1ea7u ti\u00ean n\u00e0y kh\u00f4ng kh\u1ea3 thi v\u1ec1 m\u1eb7t th\u01b0\u01a1ng m\u1ea1i, nh\u01b0ng ch\u00fang \u0111\u00e3 cung c\u1ea5p n\u1ec1n t\u1ea3ng ki\u1ebfn \u200b\u200bth\u1ee9c h\u00f3a h\u1ecdc m\u00e0 sau n\u00e0y c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u s\u1ebd tinh ch\u1ec9nh th\u00e0nh c\u00e1c gi\u1ea3i ph\u00e1p th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"the-1970s-emissions-crisis-and-regulatory-push\">Kh\u1ee7ng ho\u1ea3ng kh\u00ed th\u1ea3i nh\u1eefng n\u0103m 1970 v\u00e0 s\u1ef1 th\u00fac \u0111\u1ea9y v\u1ec1 m\u1eb7t quy \u0111\u1ecbnh<\/h2>\n\n\n\n<p>B\u01b0\u1edbc ngo\u1eb7t \u0111\u1ebfn v\u1edbi \u0110\u1ea1o lu\u1eadt Kh\u00f4ng kh\u00ed S\u1ea1ch Hoa K\u1ef3 n\u0103m 1970, y\u00eau c\u1ea7u gi\u1ea3m \u0111\u00e1ng k\u1ec3 l\u01b0\u1ee3ng kh\u00ed th\u1ea3i t\u1eeb xe c\u1ed9. C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u00f4 t\u00f4 \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u c\u1eaft gi\u1ea3m 90% l\u01b0\u1ee3ng kh\u00ed th\u1ea3i hydrocarbon v\u00e0 carbon monoxide trong v\u00f2ng 5 n\u0103m t\u1edbi \u2014 m\u1ed9t th\u00e1ch th\u1ee9c g\u1ea7n nh\u01b0 b\u1ea5t kh\u1ea3 thi v\u1edbi c\u00f4ng ngh\u1ec7 hi\u1ec7n c\u00f3. C\u00f9ng l\u00fac \u0111\u00f3, \u1ee6y ban T\u00e0i nguy\u00ean Kh\u00f4ng kh\u00ed California (CARB) \u0111\u00e3 ban h\u00e0nh c\u00e1c ti\u00eau chu\u1ea9n ti\u1ec3u bang th\u1eadm ch\u00ed c\u00f2n kh\u1eaft khe h\u01a1n. L\u1ea7n \u0111\u1ea7u ti\u00ean, lu\u1eadt ph\u00e1p t\u1ea1o ra s\u1ef1 c\u1ea5p thi\u1ebft th\u1ef1c s\u1ef1 cho c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u00f4 t\u00f4 \u0111\u1ea7u t\u01b0 v\u00e0o ph\u00e1t tri\u1ec3n b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c. N\u1ebfu kh\u00f4ng c\u00f3 \u00e1p l\u1ef1c ph\u00e1p l\u00fd, ng\u00e0nh c\u00f4ng nghi\u1ec7p n\u00e0y kh\u00f3 c\u00f3 th\u1ec3 ph\u00e1t tri\u1ec3n nhanh ch\u00f3ng nh\u01b0 v\u1eady. M\u1ed1i quan ng\u1ea1i v\u1ec1 s\u1ee9c kh\u1ecfe c\u1ed9ng \u0111\u1ed3ng, k\u1ebft h\u1ee3p v\u1edbi \u00fd ch\u00ed ch\u00ednh tr\u1ecb, \u0111\u00e3 t\u1ea1o ti\u1ec1n \u0111\u1ec1 cho m\u1ed9t trong nh\u1eefng c\u00f4ng ngh\u1ec7 m\u00f4i tr\u01b0\u1eddng quan tr\u1ecdng nh\u1ea5t trong l\u1ecbch s\u1eed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"the-first-production-catalytic-converters-1975-onwards-\">B\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c s\u1ea3n xu\u1ea5t \u0111\u1ea7u ti\u00ean (t\u1eeb n\u0103m 1975 tr\u1edf \u0111i)<\/h2>\n\n\n\n<p>N\u0103m 1975, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u00f4 t\u00f4 M\u1ef9 nh\u01b0 General Motors v\u00e0 Ford \u0111\u00e3 gi\u1edbi thi\u1ec7u nh\u1eefng chi\u1ebfc xe s\u1ea3n xu\u1ea5t \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c trang b\u1ecb b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c. Nh\u1eefng h\u1ec7 th\u1ed1ng ban \u0111\u1ea7u n\u00e0y l\u00e0 ch\u1ea5t x\u00fac t\u00e1c oxy h\u00f3a &#034;hai chi\u1ec1u&#034;, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 kh\u1eed carbon monoxide (CO) th\u00e0nh carbon dioxide (CO\u2082) v\u00e0 hydrocarbon (HC) th\u00e0nh n\u01b0\u1edbc (H\u2082O). Ch\u00eca kh\u00f3a cho hi\u1ec7u qu\u1ea3 c\u1ee7a ch\u00fang l\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c kim lo\u1ea1i qu\u00fd - ch\u1ee7 y\u1ebfu l\u00e0 b\u1ea1ch kim v\u00e0 paladi - \u0111\u01b0\u1ee3c l\u1eafng \u0111\u1ecdng tr\u00ean n\u1ec1n g\u1ed1m d\u1ea1ng t\u1ed5 ong. M\u1eb7c d\u00f9 mang t\u00ednh c\u00e1ch m\u1ea1ng, nh\u1eefng b\u1ed9 chuy\u1ec3n \u0111\u1ed5i n\u00e0y v\u1eabn c\u00f3 nh\u1eefng h\u1ea1n ch\u1ebf. Ch\u00fang kh\u00f4ng th\u1ec3 kh\u1eed nit\u01a1 oxit (NOx), m\u1ed9t trong nh\u1eefng t\u00e1c nh\u00e2n ch\u00ednh g\u00e2y ra kh\u00f3i b\u1ee5i. Tuy nhi\u00ean, ch\u00fang \u0111\u00e3 \u0111\u00e1nh d\u1ea5u m\u1ed9t k\u1ef7 nguy\u00ean m\u1edbi trong thi\u1ebft k\u1ebf \u00f4 t\u00f4, ch\u1ee9ng minh r\u1eb1ng h\u00f3a h\u1ecdc c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 m\u00f4i tr\u01b0\u1eddng th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"the-shift-to-unleaded-gasoline\">S\u1ef1 chuy\u1ec3n \u0111\u1ed5i sang x\u0103ng kh\u00f4ng ch\u00ec<\/h2>\n\n\n\n<p>M\u1ed9t trong nh\u1eefng r\u00e0o c\u1ea3n l\u1edbn nh\u1ea5t \u0111\u1ed1i v\u1edbi vi\u1ec7c \u00e1p d\u1ee5ng b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c l\u00e0 x\u0103ng pha ch\u00ec. Ch\u00ec \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t \u0111\u1ed9ng c\u01a1 v\u00e0 gi\u1ea3m ti\u1ebfng g\u00f5, nh\u01b0ng ch\u00ec l\u1ea1i ph\u1ee7 v\u00e0 v\u00f4 hi\u1ec7u h\u00f3a c\u00e1c b\u1ec1 m\u1eb7t x\u00fac t\u00e1c ch\u1ec9 trong v\u00e0i tu\u1ea7n. \u0110\u1ec3 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c tr\u1edf n\u00ean kh\u1ea3 thi, c\u00e1c ch\u00ednh ph\u1ee7 \u0111\u00e3 th\u00fac \u0111\u1ea9y vi\u1ec7c c\u1ea3i ti\u1ebfn c\u00f4ng th\u1ee9c nhi\u00ean li\u1ec7u. B\u1eaft \u0111\u1ea7u t\u1eeb gi\u1eefa nh\u1eefng n\u0103m 1970, Hoa K\u1ef3 \u0111\u00e3 lo\u1ea1i b\u1ecf d\u1ea7n x\u0103ng pha ch\u00ec, v\u00e0 c\u00e1c qu\u1ed1c gia kh\u00e1c c\u0169ng l\u00e0m theo. \u0110\u1ebfn nh\u1eefng n\u0103m 1990, nhi\u00ean li\u1ec7u kh\u00f4ng ch\u00ec \u0111\u00e3 tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n to\u00e0n c\u1ea7u. S\u1ef1 thay \u0111\u1ed5i n\u00e0y kh\u00f4ng ch\u1ec9 cho ph\u00e9p b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 m\u00e0 c\u00f2n lo\u1ea1i b\u1ecf m\u1ed9t trong nh\u1eefng ch\u1ea5t ph\u1ee5 gia \u0111\u1ed9c h\u1ea1i nh\u1ea5t trong l\u1ecbch s\u1eed nhi\u00ean li\u1ec7u, mang l\u1ea1i l\u1ee3i \u00edch to l\u1edbn cho s\u1ee9c kh\u1ecfe tr\u00ean to\u00e0n th\u1ebf gi\u1edbi.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"introduction-of-the-three-way-catalyst-twc-in-the-1980s\">Gi\u1edbi thi\u1ec7u v\u1ec1 ch\u1ea5t x\u00fac t\u00e1c ba chi\u1ec1u (TWC) v\u00e0o nh\u1eefng n\u0103m 1980<\/h2>\n\n\n\n<p>Nh\u1eefng n\u0103m 1980 \u0111\u00e3 mang \u0111\u1ebfn m\u1ed9t c\u1ea3i ti\u1ebfn mang t\u00ednh \u0111\u1ed9t ph\u00e1: b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u. Kh\u00f4ng gi\u1ed1ng nh\u01b0 c\u00e1c h\u1ec7 th\u1ed1ng hai chi\u1ec1u, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u (TWC) c\u00f3 th\u1ec3 \u0111\u1ed3ng th\u1eddi gi\u1ea3m thi\u1ec3u hydrocarbon, carbon monoxide v\u00e0 nit\u01a1 oxit. \u0110i\u1ec1u n\u00e0y \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p b\u1ea1ch kim v\u00e0 paladi cho c\u00e1c ph\u1ea3n \u1ee9ng oxy h\u00f3a v\u1edbi rhodium \u0111\u1ec3 gi\u1ea3m NOx. B\u01b0\u1edbc \u0111\u1ed9t ph\u00e1 n\u00e0y \u0111\u01b0\u1ee3c t\u0103ng c\u01b0\u1eddng h\u01a1n n\u1eefa nh\u1edd vi\u1ec7c b\u1ed5 sung c\u00e1c c\u1ea3m bi\u1ebfn lambda (oxy), gi\u00fap theo d\u00f5i n\u1ed3ng \u0111\u1ed9 oxy trong kh\u00ed th\u1ea3i v\u00e0 cho ph\u00e9p ki\u1ec3m so\u00e1t t\u1ef7 l\u1ec7 nhi\u00ean li\u1ec7u-kh\u00f4ng kh\u00ed ch\u00ednh x\u00e1c. V\u1edbi TWC, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u00f4 t\u00f4 c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n kh\u1eaft khe h\u01a1n m\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t. Ng\u00e0y nay, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c ba chi\u1ec1u v\u1eabn l\u00e0 x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a c\u00f4ng ngh\u1ec7 ki\u1ec3m so\u00e1t kh\u00ed th\u1ea3i to\u00e0n c\u1ea7u.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"material-design-improvements-1990s-2000s-\">C\u1ea3i ti\u1ebfn v\u1ec1 v\u1eadt li\u1ec7u v\u00e0 thi\u1ebft k\u1ebf (nh\u1eefng n\u0103m 1990\u20132000)<\/h2>\n\n\n\n<p>Khi c\u00e1c ti\u00eau chu\u1ea9n kh\u00ed th\u1ea3i ng\u00e0y c\u00e0ng kh\u1eaft khe h\u01a1n, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c c\u0169ng ph\u00e1t tri\u1ec3n. C\u00e1c k\u1ef9 s\u01b0 \u0111\u00e3 t\u1ed1i \u01b0u h\u00f3a l\u1edbp ph\u1ee7 r\u1eeda \u2014 l\u1edbp x\u1ed1p m\u1ecfng gi\u1eef kim lo\u1ea1i qu\u00fd \u2014 \u0111\u1ec3 t\u0103ng di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t v\u00e0 hi\u1ec7u su\u1ea5t. Ch\u1ea5t n\u1ec1n chuy\u1ec3n t\u1eeb d\u1ea1ng vi\u00ean c\u1ed3ng k\u1ec1nh sang d\u1ea1ng t\u1ed5 ong g\u1ed1m nh\u1eb9, v\u00e0 trong m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng, l\u00e0 l\u1edbp l\u00e1 kim lo\u1ea1i. Nh\u1eefng ti\u1ebfn b\u1ed9 v\u1ec1 \u0111\u1ed9 b\u1ec1n nhi\u1ec7t cho ph\u00e9p b\u1ed9 chuy\u1ec3n \u0111\u1ed5i ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 kh\u1eafc nghi\u1ec7t t\u1eeb c\u00e1c \u0111\u1ed9ng c\u01a1 hi\u1ec7u su\u1ea5t cao hi\u1ec7n \u0111\u1ea1i. C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u0169ng c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i \u201cl\u00e3o h\u00f3a nhi\u1ec7t\u201d, m\u1ed9t qu\u00e1 tr\u00ecnh l\u00e0m gi\u1ea3m ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ch\u1ea5t x\u00fac t\u00e1c theo th\u1eddi gian. \u0110\u1ebfn nh\u1eefng n\u0103m 2000, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u0111\u00e3 tr\u1edf n\u00ean nh\u1ecf h\u01a1n, nh\u1eb9 h\u01a1n v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n bao gi\u1edd h\u1ebft, \u0111\u1ed3ng th\u1eddi v\u1eabn \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u tr\u00ean nhi\u1ec1u lo\u1ea1i xe.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"catalytic-converters-in-the-era-of-stricter-standards\">B\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c trong th\u1eddi \u0111\u1ea1i ti\u00eau chu\u1ea9n nghi\u00eam ng\u1eb7t h\u01a1n<\/h2>\n\n\n\n<p>Nh\u1eefng n\u0103m 1990 v\u00e0 2000 ch\u1ee9ng ki\u1ebfn \u200b\u200bs\u1ef1 th\u1ed1ng nh\u1ea5t to\u00e0n c\u1ea7u v\u1ec1 lu\u1eadt kh\u00ed th\u1ea3i. Ch\u00e2u \u00c2u \u0111\u00e3 ban h\u00e0nh c\u00e1c ti\u00eau chu\u1ea9n Euro (Euro 1 n\u0103m 1992 \u0111\u1ebfn Euro 6 v\u00e0o nh\u1eefng n\u0103m 2010), m\u1ed7i b\u01b0\u1edbc \u0111\u1ec1u y\u00eau c\u1ea7u gi\u1ea3m ph\u00e1t th\u1ea3i \u0111\u00e1ng k\u1ec3. Hoa K\u1ef3 \u0111\u00e3 ban h\u00e0nh c\u00e1c ti\u00eau chu\u1ea9n B\u1eadc 1, B\u1eadc 2 v\u00e0 B\u1eadc 3. C\u00e1c quy \u0111\u1ecbnh n\u00e0y y\u00eau c\u1ea7u b\u1ed9 x\u00fac t\u00e1c kh\u00f4ng ch\u1ec9 \u0111\u00e1p \u1ee9ng c\u00e1c gi\u1edbi h\u1ea1n khi m\u1edbi m\u00e0 c\u00f2n ph\u1ea3i duy tr\u00ec hi\u1ec7u su\u1ea5t tr\u00ean 100.000 d\u1eb7m ho\u1eb7c h\u01a1n. K\u1ebft qu\u1ea3 l\u00e0, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u00f4 t\u00f4 \u0111\u00e3 \u0111\u1ea7u t\u01b0 v\u00e0o vi\u1ec7c s\u1eed d\u1ee5ng kim lo\u1ea1i qu\u00fd v\u1edbi t\u1ea3i tr\u1ecdng cao h\u01a1n v\u00e0 thi\u1ebft k\u1ebf ti\u00ean ti\u1ebfn h\u01a1n. Tr\u00ean th\u1ecb tr\u01b0\u1eddng to\u00e0n c\u1ea7u, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t th\u00e0nh ph\u1ea7n ph\u1ed5 bi\u1ebfn, kh\u00f4ng c\u00f2n l\u00e0 t\u00f9y ch\u1ecdn m\u00e0 l\u00e0 b\u1eaft bu\u1ed9c \u0111\u1ec3 tu\u00e2n th\u1ee7.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"challenges-innovations-today\">Nh\u1eefng th\u00e1ch th\u1ee9c v\u00e0 \u0111\u1ed5i m\u1edbi ng\u00e0y nay<\/h2>\n\n\n\n<p>M\u1eb7c d\u00f9 \u0111\u00e3 th\u00e0nh c\u00f4ng trong nhi\u1ec1u th\u1eadp k\u1ef7, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c v\u1eabn ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi nhi\u1ec1u th\u00e1ch th\u1ee9c. M\u1ed9t trong s\u1ed1 \u0111\u00f3 l\u00e0 &#034;kh\u00ed th\u1ea3i kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i&#034; \u2014 l\u01b0\u1ee3ng ch\u1ea5t \u00f4 nhi\u1ec5m cao \u0111\u01b0\u1ee3c th\u1ea3i ra tr\u01b0\u1edbc khi b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u0111\u1ea1t \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 v\u1eadn h\u00e0nh. \u0110\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y, c\u00e1c k\u1ef9 s\u01b0 \u0111ang th\u1eed nghi\u1ec7m c\u00e1c b\u1ed9 x\u00fac t\u00e1c \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng b\u1eb1ng \u0111i\u1ec7n (EHC), c\u00e1c b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u0111\u01b0\u1ee3c gh\u00e9p n\u1ed1i g\u1ea7n \u0111\u1ed9ng c\u01a1 v\u00e0 h\u1ec7 th\u1ed1ng c\u00e1ch nhi\u1ec7t ti\u00ean ti\u1ebfn. Xe hybrid, v\u1ed1n th\u01b0\u1eddng xuy\u00ean kh\u1edfi \u0111\u1ed9ng v\u00e0 d\u1eebng \u0111\u1ed9ng c\u01a1, l\u00e0m t\u0103ng th\u00eam s\u1ef1 ph\u1ee9c t\u1ea1p do b\u1ed9 chuy\u1ec3n \u0111\u1ed5i b\u1ecb ngu\u1ed9i \u0111i trong giai \u0111o\u1ea1n t\u1eaft m\u00e1y. \u0110\u1ed3ng th\u1eddi, t\u00ecnh tr\u1ea1ng tr\u1ed9m c\u1eafp b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c c\u0169ng gia t\u0103ng do gi\u00e1 tr\u1ecb c\u1ee7a b\u1ea1ch kim, palladium v\u00e0 rhodium, t\u1ea1o ra nh\u1eefng v\u1ea5n \u0111\u1ec1 m\u1edbi v\u1ec1 an ninh v\u00e0 chu\u1ed7i cung \u1ee9ng. C\u00f4ng ngh\u1ec7 n\u00e0y ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n \u0111\u1ec3 c\u00e2n b\u1eb1ng gi\u1eefa hi\u1ec7u su\u1ea5t, \u0111\u1ed9 b\u1ec1n v\u00e0 t\u00ednh an to\u00e0n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"future-outlook-beyond-internal-combustion\">Tri\u1ec3n v\u1ecdng t\u01b0\u01a1ng lai: V\u01b0\u1ee3t ra ngo\u00e0i \u0111\u1ed9ng c\u01a1 \u0111\u1ed1t trong<\/h2>\n\n\n\n<p>Khi ng\u00e0nh c\u00f4ng nghi\u1ec7p \u00f4 t\u00f4 chuy\u1ec3n sang \u0111i\u1ec7n kh\u00ed h\u00f3a, m\u1ed9t s\u1ed1 ng\u01b0\u1eddi \u0111\u1eb7t c\u00e2u h\u1ecfi li\u1ec7u b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c c\u00f3 tr\u1edf n\u00ean l\u1ed7i th\u1eddi hay kh\u00f4ng. M\u1eb7c d\u00f9 xe \u0111i\u1ec7n ho\u00e0n to\u00e0n kh\u00f4ng y\u00eau c\u1ea7u b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c, nh\u01b0ng xe hybrid v\u00e0 xe hybrid c\u1eafm s\u1ea1c v\u1eabn ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o h\u1ec7 th\u1ed1ng x\u00fac t\u00e1c ti\u00ean ti\u1ebfn. H\u01a1n n\u1eefa, c\u00f4ng ngh\u1ec7 x\u00fac t\u00e1c s\u1ebd ti\u1ebfp t\u1ee5c \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong xe t\u1ea3i h\u1ea1ng n\u1eb7ng, thi\u1ebft b\u1ecb x\u00e2y d\u1ef1ng v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p. Vi\u1ec7c t\u00e1i ch\u1ebf b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u0111\u00e3 qua s\u1eed d\u1ee5ng c\u0169ng \u0111ang tr\u1edf n\u00ean c\u1ea5p thi\u1ebft, v\u1eeba \u0111\u1ec3 thu h\u1ed3i kim lo\u1ea1i qu\u00fd gi\u00e1, v\u1eeba h\u1ed7 tr\u1ee3 n\u1ec1n kinh t\u1ebf tu\u1ea7n ho\u00e0n. Nh\u00ecn v\u1ec1 t\u01b0\u01a1ng lai, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c c\u00f3 th\u1ec3 gi\u1ea3m d\u1ea7n trong xe du l\u1ecbch, nh\u01b0ng v\u1eabn \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong nhi\u1ec1u l\u0129nh v\u1ef1c trong nhi\u1ec1u th\u1eadp k\u1ef7 t\u1edbi.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"conclusion\">Ph\u1ea7n k\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p>B\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee9ng \u2014 n\u00f3 l\u00e0 m\u1ed9t c\u1ed9t m\u1ed1c trong k\u1ef9 thu\u1eadt m\u00f4i tr\u01b0\u1eddng. T\u1eeb nh\u1eefng th\u00ed nghi\u1ec7m ban \u0111\u1ea7u c\u1ee7a Houdry cho \u0111\u1ebfn ng\u00e0y nay <a href=\"https:\/\/3waycatalyst.com\/vi\/three-way-catalytic-converter-twc\/\">ch\u1ea5t x\u00fac t\u00e1c ba chi\u1ec1u<\/a>Ph\u00e1t minh n\u00e0y \u0111\u00e3 c\u1ee9u s\u1ed1ng h\u00e0ng tri\u1ec7u ng\u01b0\u1eddi b\u1eb1ng c\u00e1ch gi\u1ea3m thi\u1ec3u kh\u00ed th\u1ea3i \u0111\u1ed9c h\u1ea1i v\u00e0 l\u00e0m s\u1ea1ch kh\u00f4ng kh\u00ed ch\u00fang ta h\u00edt th\u1edf. N\u00f3 l\u00e0 minh ch\u1ee9ng cho th\u1ea5y quy \u0111\u1ecbnh, \u0111\u1ed5i m\u1edbi v\u00e0 h\u00f3a h\u1ecdc c\u00f3 th\u1ec3 c\u00f9ng nhau gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 c\u1ea5p b\u00e1ch to\u00e0n c\u1ea7u. Khi th\u1ebf gi\u1edbi chuy\u1ec3n sang xe \u0111i\u1ec7n, c\u00e2u chuy\u1ec7n v\u1ec1 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c v\u1eabn ch\u01b0a k\u1ebft th\u00fac \u2014 n\u00f3 ti\u1ebfp t\u1ee5c truy\u1ec1n c\u1ea3m h\u1ee9ng cho nh\u1eefng c\u00e1ch ti\u1ebfp c\u1eadn m\u1edbi h\u01b0\u1edbng \u0111\u1ebfn giao th\u00f4ng s\u1ea1ch h\u01a1n v\u00e0 ng\u00e0nh c\u00f4ng nghi\u1ec7p b\u1ec1n v\u1eefng.<\/p>","protected":false},"excerpt":{"rendered":"<p>Kh\u00e1m ph\u00e1 l\u1ecbch s\u1eed c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i x\u00fac t\u00e1c, t\u1eeb nh\u1eefng nguy\u00ean m\u1eabu ban \u0111\u1ea7u \u0111\u1ebfn h\u1ec7 th\u1ed1ng ba chi\u1ec1u hi\u1ec7n \u0111\u1ea1i v\u00e0 t\u00ecm hi\u1ec3u c\u00e1ch n\u00f3 \u0111\u00e3 thay \u0111\u1ed5i vi\u1ec7c ki\u1ec3m so\u00e1t kh\u00ed th\u1ea3i c\u1ee7a xe tr\u00ean to\u00e0n th\u1ebf gi\u1edbi.<\/p>","protected":false},"author":1,"featured_media":5601,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"googlesitekit_rrm_CAowgdPcCw:productID":"","footnotes":""},"categories":[98],"tags":[1248,1250,1245,1252,1251,1246,1249,1247,26],"class_list":["post-5511","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guide","tag-automotive-emissions-control","tag-catalytic-converter-development-timeline","tag-catalytic-converter-evolution","tag-catalytic-converter-history","tag-catalytic-converter-technology","tag-exhaust-emissions-reduction","tag-history-of-emissions-regulations","tag-invention-of-catalytic-converter","tag-three-way-catalytic-converter"],"_links":{"self":[{"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/posts\/5511","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/comments?post=5511"}],"version-history":[{"count":0,"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/posts\/5511\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/media\/5601"}],"wp:attachment":[{"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/media?parent=5511"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/categories?post=5511"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/3waycatalyst.com\/vi\/wp-json\/wp\/v2\/tags?post=5511"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}