V\u00ec sao phanh \u00f4 t\u00f4 \u0111\u1ea1p th\u1ea5y n\u1eb7ng ?
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Ai c\u0169ng bi\u1ebft phanh l b\u1ed9 ph\u1eadn an ton b\u1eaft bu\u1ed9c ph\u1ea3i có trên b\u1ea5t kì ph\u01b0\u01a1ng ti\u1ec7n di chuy\u1ec3n no \u0111\u1eb7c bi\u1ec7t l v\u1edbi ô tô. Tuy nhiên nh\u1eefng s\u1ef1 c\u1ed1 th\u01b0\u1eddng g\u1eb7p v\u1edbi phanh thì ít ng\u01b0\u1eddi có th\u1ec3 l\u01b0\u1eddng tr\u01b0\u1edbc v bi\u1ebft cách kh\u1eafc ph\u1ee5c cho hi\u1ec7u qu\u1ea3 nh\u1ea5t. Vi\u1ec7c ki\u1ec3m tra v nh\u1eadn bi\u1ebft d\u1ea5u hi\u1ec7u tr\u1ee5c tr\u1eb7c c\u1ee7a phanh ô tô s\u1ebd c\u1ee9u s\u1ed1ng tính m\u1ea1ng c\u1ee7a chính b\u1ea1n v m\u1ecdi ng\u01b0\u1eddi. D\u01b0\u1edbi \u0111ây l nh\u1eefng kinh nghi\u1ec7m \u0111\u1ea1p phanh \u0111\u1ec3 b\u1eaft b\u1ec7nh h\u1eefu ích m cho thuê xe ô tô du l\u1ecbch \u0111 n\u1eb5ng t\u1ed5ng h\u1ee3p \u0111\u01b0\u1ee3c.\u0110\u1ea1p phanh th\u1ea5y n\u1eb7ng
Các h\u1ec7 th\u1ed1ng phanh ngy nay th\u01b0\u1eddng dùng tr\u1ee3 l\u1ef1c chân không \u0111\u1ec3 gi\u1ea3m v\u1ea5t v\u1ea3 cho ng\u01b0\u1eddi lái khi ph\u1ea3i \u0111\u1ea1p phanh. V\u1edbi hi\u1ec7n t\u01b0\u1ee3ng \u0111\u1ea1p phanh th\u1ea5y n\u1eb7ng nguyên nhân th\u01b0\u1eddng x\u1ea3y ra l tr\u1ee3 l\u1ef1c phanh b\u1ecb h\u1ecfng. Rò khí \u0111ã không t\u1ea1o ra chênh l\u1ec7ch áp su\u1ea5t \u0111\u1ee7 l\u1edbn \u0111\u1ec3 h\u1ed7 tr\u1ee3 l\u1ef1c t\u1eeb bn \u0111\u1ea1p. Ng\u01b0\u1eddi lái v\u1eabn có th\u1ec3 phanh \u0111\u01b0\u1ee3c xe v\u1edbi m\u1ed9t l\u1ef1c m\u1ea1nh h\u01a1n.
M\u1ed9t nguyên nhân khác, \u0111\u01b0\u1eddng \u1ed1ng d\u1eabn d\u1ea7u b\u1ecb t\u1eafc, áp l\u1ef1c d\u1ea7u t\u0103ng cao nh\u01b0ng không th\u1ec3 truy\u1ec1n \u0111\u01b0\u1ee3c t\u1edbi c\u01a1 c\u1ea5u phanh. Trong tr\u01b0\u1eddng h\u1ee3p ny, dù c\u1ed1 s\u1ee9c thì phanh c\u0169ng không hi\u1ec7u qu\u1ea3 ho\u1eb7c hi\u1ec7u qu\u1ea3 gi\u1ea3m \u0111i nhi\u1ec1u.
\u0110\u1ea1p phanh không nh\u1ea3 (Bó phanh)
Bó phanh l d\u1ea5u hi\u1ec7u cho th\u1ea5y lò xo kéo ho\u1eb7c lò xo h\u1ed3i v\u1ecb các má phanh b\u1ecb h\u1ecfng, ho\u1eb7c k\u1eb9t xi lanh bánh xe, xi lanh t\u1ed5ng phanh b\u1ecb h\u1ecfng, ho\u1eb7c \u1eafc phanh b\u1ecb bó do khô d\u1ea7u, ho\u1eb7c do các l\u1ed7i thao tác sai c\u1ee7a ng\u01b0\u1eddi lái nh\u01b0: hnh trình c\u1ee7a chân phanh không \u0111úng ho\u1eb7c phanh tay \u0111i\u1ec1u ch\u1ec9nh sai\u2026
\u0110\u1ea1p phanh b\u1ecb h\u1eabng
Trong tr\u01b0\u1eddng h\u1ee3p \u0111\u1ea1p chân phanh n\u1ebfu có c\u1ea3m giác h\u1eabng chân thì \u0111ó chính l hi\u1ec7n t\u01b0\u1ee3ng b\u1ecb m\u1ea5t áp su\u1ea5t phanh. Nguyên nhân l do xi lanh phanh b\u1ecb tr\u1ea7y x\u01b0\u1edbc, r\u1ed7 khi\u1ebfn d\u1ea7u b\u1ecb h\u1ed3i l\u1ea1i m\u1ed7i khi \u0111\u1ea1p phanh, d\u1eabn \u0111\u1ebfn phanh không \u0103n, ho\u1eb7c do tuy ô d\u1eabn d\u1ea7u b\u1ecb r\u1ea1n n\u1ee9t, khi\u1ebfn d\u1ea7u b\u1ecb rò r\u1ec9. Lúc ny, n\u1ebfu \u0111\u1ea1p phanh \u0111\u1ed9t ng\u1ed9t, tuy ô có th\u1ec3 b\u1ecb v\u1ee1, d\u1eabn t\u1edbi hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t phanh khi\u1ebfn ng\u01b0\u1eddi lái không th\u1ec3 ki\u1ec3m soát \u0111\u01b0\u1ee3c xe.
\u0110\u1ea1p phanh th\u1ea5y xe b\u1ecb l\u1ec7ch
M\u1ed9t s\u1ef1 c\u1ed1 th\u01b0\u1eddng g\u1eb7p khác v\u1edbi phanh trang tr\u1ed1ng l hi\u1ec7n t\u01b0\u1ee3ng xe b\u1ecb l\u1ec7ch sang m\u1ed9t bên khi phanh, nguyên nhân do l\u1ef1c phanh tác \u0111\u1ed9ng lên các bánh xe không \u0111\u1ed3ng \u0111\u1ec1u, do m\u1ed9t trong s\u1ed1 chúng dính d\u1ea7u, khe h\u1edf má phanh tang tr\u1ed1ng không \u0111\u1ec1u, \u0111\u01b0\u1eddng d\u1eabn d\u1ea7u b\u1ecb t\u1eafc c\u1ee5c b\u1ed9\u2026 N\u1ebfu b\u1ea1n g\u1eb7p ph\u1ea3i tình hu\u1ed1ng ny thì thuê xe 7 ch\u1ed7 \u0111 n\u1eb5ng giá r\u1ebb khuyên b\u1ea1n nên mang xe t\u1edbi ngay gara \u0111\u1ec3 s\u1eeda ch\u1eefa, b\u1edfi v\u1eadn hnh kéo di s\u1ebd khi\u1ebfn xe r\u1ea5t d\u1ec5 l\u1eadt trong các tình hu\u1ed1ng phanh g\u1ea5p \u1edf t\u1ed1c \u0111\u1ed9 cao, ho\u1eb7c vo cua\u2026
\u0110\u1ea1p phanh có ti\u1ebfng kêu ken két
Ti\u1ebfng kêu ken két phát ra \u0111\u1ec1u \u0111\u1eb7n ch\u1ec9 khi b\u1ea1n \u0111\u1ea1p phanh, \u0111\u01a1n gi\u1ea3n \u0111ó lm tín hi\u1ec7u cho bi\u1ebft má phanh \u0111ã b\u1ecb mòn, c\u1ea7n \u0111\u01b0\u1ee3c thay th\u1ebf. \u0110ây l bi\u1ec7n pháp an ton m nh s\u1ea3n xu\u1ea5t \u0111\u01b0a ra.
N\u1ebfu ti\u1ebfng kêu không l\u1edbn ho\u1eb7c không xu\u1ea5t hi\u1ec7n liên t\u1ee5c, có th\u1ec3 ch\u1ea5t b\u1ea9n, rác \u0111ã l\u1ecdt vo c\u01a1 c\u1ea5u phanh. Hi\u1ec7n t\u01b0\u1ee3ng ny s\u1ebd h\u1ebft sau khi c\u01a1 c\u1ea5u phanh \u0111\u01b0\u1ee3c lm s\u1ea1ch.
M\u1ed9t vi nguyên nhân khác nh\u01b0 ch\u1ea5t l\u01b0\u1ee3ng má phanh kém, gu\u1ed1c phanh không \u0111úng, lò-xo g\u1eaby, gu\u1ed1c phanh không \u0111\u1ed3ng tâm\u2026 \u0110ôi khi ti\u1ebfng kêu phát ra không ph\u1ea3i t\u1eeb c\u01a1 c\u1ea5u phanh, m do bi mai \u1edf b\u1ecb mòn quá m\u1ee9c.
\u0110\u1ea1p phanh h\u1ebft c\u1ee1 nh\u01b0ng xe không d\u1eebng
\u0110ây l \u201cb\u1ec7nh\u201d th\u01b0\u1eddng g\u1eb7p v\u1edbi nh\u1eefng xe trang b\u1ecb phanh tang tr\u1ed1ng. Các nguyên nhân d\u1eabn \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng ny l: c\u1ea7n \u0111\u1ea9y piston xi lanh chính b\u1ecb cong, thi\u1ebfu d\u1ea7u ho\u1eb7c l\u1ecdt khí trong h\u1ec7 th\u1ed1ng phanh, má phanh quá mòn\u2026 Trong tr\u01b0\u1eddng h\u1ee3p ny, b\u1ea1n c\u1ea7n mang xe con t\u1edbi gara \u0111\u1ec3 th\u1ee3 \u0111i\u1ec1u ch\u1ec9nh các piston chính b\u1ecb cong ho\u1eb7c thay má phanh m\u1edbi. N\u1ebfu d\u1ea7u phanh b\u1ecb thi\u1ebfu, b\u1ea1n nên yêu c\u1ea7u b\u1ed5 sung thêm d\u1ea7u phanh theo \u0111úng lo\u1ea1i m nh s\u1ea3n xu\u1ea5t khuy\u1ebfn cáo cho t\u1eebng dòng xe (t\u1ea1i Vi\u1ec7t Nam, 3 lo\u1ea1i d\u1ea7u phanh cho phanh tang tr\u1ed1ng ph\u1ed5 bi\u1ebfn nh\u1ea5t l: DOT3, DOT4 v DOT5).
Ngu\u1ed3n:http://www.scoop.it/t/thue-xe-a-nang
Free picture V\u00ec sao phanh \u00f4 t\u00f4 \u0111\u1ea1p th\u1ea5y n\u1eb7ng ? integrated with the OffiDocs web apps
