Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n
Khi b\u1ea1n mua xe, th\u01b0\u1eddng \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 ph\u00e2n ph\u1ed1i cung c\u1ea5p cho 2 th\u00f4ng s\u1ed1 v\u1ec1 xe l\u00e0 momen xo\u1eafn v\u00e0 c\u00f4ng su\u1ea5t. V\u1eady b\u1ea1n hi\u1ec3u th\u1ebf n\u00e0o l\u00e0 momen xo\u1eafn? Momen xo\u1eafn l\u00e0 g\u00ec? Momen xo\u1eafn c\u00f3 quan tr\u1ecdng kh\u00f4ng? C\u00f4ng th\u1ee9c t\u00ednh momen xo\u1eafn. \u0110\u1ecdc b\u00e0i vi\u1ebft n\u00e0y \u0111\u1ec3 bi\u1ebft kh\u00e1i ni\u1ec7m momen xo\u1eafn l\u00e0 g\u00ec nh\u00e9.<\/p>\n\n\n\n
Momen xo\u1eafn ( ho\u1eb7c m\u00f4-men xo\u1eafn) l\u00e0 m\u1ed9t thu\u1eadt ng\u1eef li\u00ean quan \u0111\u1ebfn c\u00e1c \u0111\u1ed9ng c\u01a1. Momen xo\u1eafn l\u00e0 m\u1ed9t l\u1ef1c xo\u1eafn c\u00f3 th\u1ec3 g\u00e2y ra chuy\u1ec3n \u0111\u1ed9ng quay. L\u00e0 th\u01b0\u1edbc \u0111o l\u1ef1c \u0111\u1ec3 m\u1ed9t v\u1eadt c\u00f3 th\u1ec3 quay quanh tr\u1ee5c. Momen xo\u1eafn c\u0169ng l\u00e0 \u0111\u01a1n v\u1ecb \u0111o kh\u1ea3 n\u0103ng th\u1ef1c hi\u1ec7n c\u00f4ng c\u1ee7a \u0111\u1ed9ng c\u01a1. \u0110\u01a1n v\u1ecb \u0111o c\u1ee7a momen xo\u1eafn \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng nanomet ( k\u00ed hi\u1ec7u Nm) ho\u1eb7c lb\/ft<\/p>\n\n\n\n
Khi c\u00f3 m\u1ed9t l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean m\u1ed9t v\u1eadt l\u00e0m n\u00f3 chuy\u1ec3n \u0111\u1ed9ng quay quanh m\u1ed9t \u0111i\u1ec3m, khi \u0111\u00f3 s\u1ebd xu\u1ea5t hi\u1ec7n momen xo\u1eafn. Momen xo\u1eafn l\u00e0 m\u1ed9t vector c\u00f3 h\u01b0\u1edbng. H\u01b0\u1edbng c\u1ee7a vecto momen l\u00e0 h\u01b0\u1edbng c\u1ee7a l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean tr\u1ee5c quay.<\/p>\n\n\n\n
N\u00f3i t\u00f3m l\u1ea1i, momen xo\u1eafn c\u00f3 ngh\u0129a l\u00e0 m\u1ed9t l\u1ef1c xo\u1eafn nh\u1eb1m g\u00e2y ra chuy\u1ec3n \u0111\u1ed9ng quay c\u1ee7a v\u1eadt.<\/p>\n\n\n\n
Momen xo\u1eafn xu\u1ea5t hi\u1ec7n r\u1ea5t nhi\u1ec1u trong cu\u1ed9c s\u1ed1ng c\u1ee7a ch\u00fang ta. V\u00ed d\u1ee5: momen xo\u1eafn trong xe \u0111\u1ea1p gi\u00fap t\u1ea1o ra l\u1ef1c quay, khi\u1ebfn xe chuy\u1ec3n \u0111\u1ed9ng m\u01b0\u1ee3t h\u01a1n. Momen xo\u1eafn trong tay n\u1eafm c\u1eeda, ho\u1eb7c momen xo\u1eafn trong \u0111\u1ed9ng c\u01a1 oto, xe m\u00e1y,\u2026 M\u1ed9t s\u1ed1 lo\u1ea1i xe c\u00f3 momen xo\u1eafn cao: xe t\u1ea3i, xe lu, xe \u0111\u1ecba h\u00ecnh, xe c\u1ea9u,\u2026<\/p>\n\n\n\n
Momen xo\u1eafn quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 kho\u1ebb c\u1ee7a \u0111\u1ed9ng c\u01a1. M\u1ed9t chi\u1ebfc xe c\u00f3 momen xo\u1eafn c\u00e0ng l\u1edbn, \u0111\u1ed9ng c\u01a1 c\u00e0ng kho\u1ebb, l\u1ef1c quay c\u1ee7a b\u00e1nh c\u00e0ng m\u1ea1nh, d\u1ec5 d\u00e0ng ch\u1edf ho\u1eb7c k\u00e9o v\u1eadt n\u1eb7ng. Do \u0111\u00f3 s\u1eed d\u1ee5ng k\u0129 thu\u1eadt \u0111\u1ec1 pa d\u1ec5 d\u00e0ng h\u01a1n, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ec1 pa l\u00ean d\u1ed1c. N\u1ebfu b\u1ea1n c\u1ea7n m\u1ed9t chi\u1ebfc xe c\u00f3 th\u1ec3 ch\u1edf nhi\u1ec1u h\u00e0ng n\u1eb7ng, t\u1ed1t nh\u1ea5t n\u00ean ch\u1ecdn xe c\u00f3 nhi\u1ec1u momen xo\u1eafn.<\/p>\n\n\n\n
Tham kh\u1ea3o: \u0110\u1ec1 Pa L\u00e0 G\u00ec? C\u00e1ch \u0110\u1ec1 Pa L\u00ean D\u1ed1c Cho Ng\u01b0\u1eddi M\u1edbi<\/p>\n\n\n\n
Momen xo\u1eafn v\u00f4 c\u00f9ng quan tr\u1ecdng \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi xe l\u1edbn v\u00e0 n\u1eb7ng. M\u1ed9t chi\u1ebfc xe c\u00f3:<\/p>\n\n\n\n
Momen xo\u1eafn c\u1ef1c \u0111\u1ea1i l\u1edbn: t\u0103ng l\u1ef1c k\u00e9o, gi\u00fap k\u00e9o nhanh, m\u1ea1nh, ch\u1edf \u0111\u01b0\u1ee3c n\u1eb7ng,<\/p>\n\n\n\n
Momen xo\u1eafn c\u1ef1c \u0111\u1ea1i ph\u1ea3i \u0111\u1ea1t \u0111\u01b0\u1ee3c \u1edf v\u00f2ng tua th\u1ea5p: gi\u00fap ti\u1ebft ki\u1ec7m nhi\u00ean li\u1ec7u, t\u0103ng t\u1ed1c nhanh, t\u1ea3i \u0111\u01b0\u1ee3c n\u1eb7ng t\u1ee9c th\u1eddi.<\/p>\n\n\n\n
Momen xo\u1eafn c\u1ef1c \u0111\u1ea1i ph\u1ea3i \u0111\u1ea1t \u0111\u01b0\u1ee3c \u1edf v\u00f2ng tua d\u00e0i: t\u0103ng t\u1ed1c xe, t\u1ea3i \u0111\u01b0\u1ee3c n\u1eb7ng.<\/p>\n\n\n\n
V\u00ed d\u1ee5: M\u1ed9t chi\u1ebfc xe th\u1ec3 thao c\u00f3 th\u1ec3 ch\u1ea1y \u0111\u01b0\u1ee3c v\u1edbi v\u1eadn t\u1ed1c 300km\/h ch\u01b0a ch\u1eafc c\u00f3 th\u1ec3 k\u00e9o \u0111\u01b0\u1ee3c m\u1ed9t chi\u1ebfc xe h\u1ea1ng n\u1eb7ng. Nh\u01b0ng v\u1edbi m\u1ed9t chi\u1ebfc xe c\u00f3 momen xo\u1eafn cao nh\u01b0ng t\u1ed1c \u0111\u1ed9 ch\u1ec9 \u0111\u1ea1t 150km\/h th\u00ec ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 l\u00e0m \u0111\u01b0\u1ee3c \u0111i\u1ec1u \u0111\u00f3.<\/p>\n\n\n\n
C\u00f4ng th\u1ee9c t\u00ednh momen xo\u1eafn<\/p>\n\n\n\n
T=P*9.55\/n<\/p>\n\n\n\n
Trong \u0111\u00f3:<\/p>\n\n\n\n
T l\u00e0 s\u1ed1 momen xo\u1eafn tr\u00ean tr\u1ee5c \u0111\u1ed9ng c\u01a1 (Nm)<\/p>\n\n\n\n
P l\u00e0 c\u00f4ng su\u1ea5t (kW)<\/p>\n\n\n\n
n l\u00e0 t\u1ed1c \u0111\u1ed9 v\u00f2ng quay c\u1ee7a \u0111\u1ed9ng c\u01a1 ( v\u00f2ng\/ph\u00fat)<\/p>\n\n\n\n
\u0110\u1ed5i \u0111\u01a1n v\u1ecb Nm sang lb\/ft (pound\/feet):<\/p>\n\n\n\n
Nm=lb \/ft * 1,356<\/p>\n\n\n\n
Momen xo\u1eafn c\u00f3 quan tr\u1ecdng kh\u00f4ng? T\u1ea7m quan tr\u1ecdng c\u1ee7a momen xo\u1eafn<\/p>\n\n\n\n
Momen xo\u1eafn l\u00e0 \u0111i\u1ec1u c\u1ea7n c\u00f3 trong c\u00e1c \u0111\u1ed9ng c\u01a1 xe. Nh\u01b0ng tu\u1ef3 v\u00e0o nhu c\u1ea7u c\u1ee7a b\u1ea1n m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn chi\u1ebfc xe c\u00f3 momen xo\u1eafn nhi\u1ec1u ho\u1eb7c \u00edt.<\/p>\n\n\n\n
N\u1ebfu b\u1ea1n c\u1ea7n m\u1ed9t chi\u1ebfc xe \u0111\u1ec3 ch\u1edf \u0111\u1ed3 v\u1eadt n\u1eb7ng, \u0111i leo d\u1ed1c \u0111\u1ecba h\u00ecnh g\u1ed3 gh\u1ebf, momen xo\u1eafn cao s\u1ebd l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft v\u00e0 b\u1eaft bu\u1ed9c chi\u1ebfc xe ph\u1ea3i c\u00f3. C\u00f2n n\u1ebfu b\u1ea1n y\u00eau th\u00edch t\u1ed1c \u0111\u1ed9, kh\u00f4ng th\u01b0\u1eddng xuy\u00ean s\u1eed d\u1ee5ng xe \u0111\u1ec3 ch\u1edd \u0111\u1ed3 n\u1eb7ng ho\u1eb7c leo \u0111\u1ecba h\u00ecnh, nh\u1eefng chi\u1ebfc xe c\u00f3 c\u00f4ng su\u1ea5t l\u1edbn s\u1ebd ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a b\u1ea1n h\u01a1n.<\/p>\n\n\n\n
Nh\u01b0ng kh\u00f4ng ph\u1ea3i nh\u1eefng chi\u1ebfc xe c\u00f3 momen cao, t\u1ea3i \u0111\u01b0\u1ee3c n\u1eb7ng m\u00e0 c\u00f4ng su\u1ea5t nh\u1ecf, \u0111i ch\u1eadm ho\u1eb7c ng\u01b0\u1ee3c l\u1ea1i. Ng\u00e0y nay, c\u00f4ng ngh\u1ec7 ph\u00e1t tri\u1ec3n oto hi\u1ec7n \u0111\u1ea1i, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u00e3 t\u1ed1i \u01b0u \u0111\u01b0\u1ee3c c\u1ea3 2 th\u00f4ng s\u1ed1 n\u00e0y, \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c d\u00f2ng xe cao c\u1ea5p.<\/p>\n\n\n\n
Tr\u00ean \u0111\u00e2y, Vietlearn.org \u0111\u00e3 gi\u1ea3i th\u00edch cho b\u1ea1n \u0111\u1ecdc v\u1ec1 kh\u00e1i ni\u1ec7m momen xo\u1eafn l\u00e0 g\u00ec? T\u00e1c d\u1ee5ng v\u00e0 m\u1ee9c \u0111\u1ed9 quan tr\u1ecdng c\u1ee7a momen xo\u1eafn. Hi v\u1ecdng nh\u1eefng ki\u1ebfn th\u1ee9c tr\u00ean v\u1ec1 momen xo\u1eafn h\u1eefu \u00edch cho ki\u1ebfn th\u1ee9c c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn Khi b\u1ea1n mua xe, th\u01b0\u1eddng \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 ph\u00e2n ph\u1ed1i cung c\u1ea5p cho 2 th\u00f4ng s\u1ed1 v\u1ec1 xe l\u00e0 momen xo\u1eafn v\u00e0 c\u00f4ng su\u1ea5t. V\u1eady b\u1ea1n hi\u1ec3u th\u1ebf n\u00e0o l\u00e0 momen xo\u1eafn? Momen xo\u1eafn l\u00e0 g\u00ec? Momen xo\u1eafn c\u00f3 quan tr\u1ecdng kh\u00f4ng? C\u00f4ng th\u1ee9c t\u00ednh momen xo\u1eafn. \u0110\u1ecdc b\u00e0i […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[7],"tags":[],"class_list":["post-2947","post","type-post","status-publish","format-standard","hentry","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/2947","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=2947"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/2947\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=2947"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=2947"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=2947"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}