狼群视频在线

離合器拔叉簡介

1、保證(zheng)汽(qi)(qi)車平穩(wen)起(qi)(qi)(qi)步(bu)(bu)(bu)(bu) 這是(shi)離合(he)(he)器(qi)的(de)首要功能(neng)。在汽(qi)(qi)車起(qi)(qi)(qi)步(bu)(bu)(bu)(bu)前，自然要先起(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)。而汽(qi)(qi)車起(qi)(qi)(qi)步(bu)(bu)(bu)(bu)時(shi)，汽(qi)(qi)車是(shi)從(cong)完全靜(jing)止的(de)狀態逐(zhu)(zhu)步(bu)(bu)(bu)(bu)加(jia)(jia)速(su)的(de)。如果(guo)傳動(dong)(dong)(dong)(dong)(dong)(dong)(dong)系(它聯(lian)系著整(zheng)個汽(qi)(qi)車)與發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)剛性地聯(lian)系，則變(bian)速(su)器(qi)一(yi)(yi)掛(gua)上檔(dang)，汽(qi)(qi)車將突然向前沖一(yi)(yi)下(xia)(xia)，但并不能(neng)起(qi)(qi)(qi)步(bu)(bu)(bu)(bu)。這是(shi)因為汽(qi)(qi)車從(cong)靜(jing)止到前沖時(shi)，產(chan)生很大(da)(da)(da)慣性力(li)，對(dui)發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)造成(cheng)很大(da)(da)(da)地阻力(li)矩。在這慣性阻力(li)矩作(zuo)用下(xia)(xia)，發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)在瞬時(shi)間轉速(su)急劇下(xia)(xia)降到最低穩(wen)定(ding)轉速(su)(一(yi)(yi)般300-500RPM)以下(xia)(xia)，發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)即熄(xi)火(huo)(huo)而不能(neng)工作(zuo)，當然汽(qi)(qi)車也不能(neng)起(qi)(qi)(qi)步(bu)(bu)(bu)(bu)。 因此(ci)，我們(men)就(jiu)需要離合(he)(he)器(qi)的(de)幫助了。在發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)起(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)后，汽(qi)(qi)車起(qi)(qi)(qi)步(bu)(bu)(bu)(bu)之前，駕駛員(yuan)先踩下(xia)(xia)離合(he)(he)器(qi)踏板，將離合(he)(he)器(qi)分離，使發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)和傳動(dong)(dong)(dong)(dong)(dong)(dong)(dong)系脫開，再將變(bian)速(su)器(qi)掛(gua)上檔(dang)，然后逐(zhu)(zhu)漸(jian)(jian)(jian)(jian)松開離合(he)(he)器(qi)踏板，使離合(he)(he)器(qi)逐(zhu)(zhu)漸(jian)(jian)(jian)(jian)接合(he)(he)。在接合(he)(he)過程中，發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)所(suo)受阻力(li)矩逐(zhu)(zhu)漸(jian)(jian)(jian)(jian)增(zeng)大(da)(da)(da)，故應同(tong)時(shi)逐(zhu)(zhu)漸(jian)(jian)(jian)(jian)踩下(xia)(xia)加(jia)(jia)速(su)踏板，即逐(zhu)(zhu)步(bu)(bu)(bu)(bu)增(zeng)加(jia)(jia)對(dui)發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)的(de)燃料供給(gei)量，使發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)的(de)轉速(su)始終保持在最低穩(wen)定(ding)轉速(su)上，而不致(zhi)熄(xi)火(huo)(huo)。同(tong)時(shi)，由(you)于離合(he)(he)器(qi)的(de)接合(he)(he)緊密程度逐(zhu)(zhu)漸(jian)(jian)(jian)(jian)增(zeng)大(da)(da)(da)，發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)經傳動(dong)(dong)(dong)(dong)(dong)(dong)(dong)系傳給(gei)驅動(dong)(dong)(dong)(dong)(dong)(dong)(dong)車輪(lun)的(de)轉矩便逐(zhu)(zhu)漸(jian)(jian)(jian)(jian)增(zeng)加(jia)(jia)，到牽(qian)引力(li)足以克服(fu)起(qi)(qi)(qi)步(bu)(bu)(bu)(bu)阻力(li)時(shi)，汽(qi)(qi)車即從(cong)靜(jing)止開始運動(dong)(dong)(dong)(dong)(dong)(dong)(dong)并逐(zhu)(zhu)步(bu)(bu)(bu)(bu)加(jia)(jia)速(su)

2、保證傳(chuan)動(dong)(dong)(dong)系換檔(dang)時(shi)工作(zuo)平順 2:實現平順的(de)(de)換檔(dang) 在(zai)汽(qi)車行(xing)駛過程中(zhong)，為適(shi)應不(bu)斷(duan)變化的(de)(de)行(xing)駛條件，傳(chuan)動(dong)(dong)(dong)系經(jing)常要更(geng)換不(bu)同檔(dang)位(wei)(wei)(wei)工作(zuo)。實現齒輪式變速(su)器(qi)的(de)(de)換檔(dang)，一般是撥動(dong)(dong)(dong)齒輪或(huo)其(qi)他掛(gua)檔(dang)機構，使原用檔(dang)位(wei)(wei)(wei)的(de)(de)某一齒輪副推出傳(chuan)動(dong)(dong)(dong)，再使另一檔(dang)位(wei)(wei)(wei)的(de)(de)齒輪副進(jin)入工作(zuo)。在(zai)換檔(dang)前必須踩下(xia)離(li)合器(qi)踏板，中(zhong)斷(duan)動(dong)(dong)(dong)力傳(chuan)動(dong)(dong)(dong)，便于使原檔(dang)位(wei)(wei)(wei)的(de)(de)嚙(nie)(nie)合副脫開(kai)，同時(shi)使新檔(dang)位(wei)(wei)(wei)嚙(nie)(nie)合副的(de)(de)嚙(nie)(nie)合部(bu)位(wei)(wei)(wei)的(de)(de)速(su)度逐步趨向(xiang)同步，這(zhe)樣進(jin)入嚙(nie)(nie)合時(shi)的(de)(de)沖擊可以大大的(de)(de)減(jian)小，實現平順的(de)(de)換檔(dang)。

 3、防止傳(chuan)(chuan)動(dong)(dong)(dong)(dong)系過載(zai) 當(dang)汽(qi)車進行緊急制動(dong)(dong)(dong)(dong)時，若沒有(you)離(li)合(he)(he)器(qi)(qi)(qi)，則發動(dong)(dong)(dong)(dong)機(ji)(ji)將(jiang)因和傳(chuan)(chuan)動(dong)(dong)(dong)(dong)系剛性連接而急劇降低(di)轉速，因而其(qi)(qi)中所(suo)(suo)有(you)運(yun)動(dong)(dong)(dong)(dong)件將(jiang)產(chan)生很大(da)的(de)(de)(de)慣性力(li)矩(其(qi)(qi)數(shu)值可能(neng)大(da)大(da)超(chao)過發動(dong)(dong)(dong)(dong)機(ji)(ji)正常工(gong)作(zuo)(zuo)時所(suo)(suo)發出的(de)(de)(de)最(zui)大(da)扭距)，對傳(chuan)(chuan)動(dong)(dong)(dong)(dong)系造成超(chao)過其(qi)(qi)承載(zai)能(neng)力(li)的(de)(de)(de)載(zai)荷(he)，而使機(ji)(ji)件損壞。有(you)了離(li)合(he)(he)器(qi)(qi)(qi)，便(bian)可以依靠離(li)合(he)(he)器(qi)(qi)(qi)主動(dong)(dong)(dong)(dong)部(bu)(bu)分和從動(dong)(dong)(dong)(dong)部(bu)(bu)分之(zhi)間可能(neng)產(chan)生的(de)(de)(de)相(xiang)對運(yun)動(dong)(dong)(dong)(dong)以消除這一(yi)危險。因此，我們(men)需要離(li)合(he)(he)器(qi)(qi)(qi)來限制傳(chuan)(chuan)動(dong)(dong)(dong)(dong)系所(suo)(suo)承受的(de)(de)(de)最(zui)大(da)扭距，保證安全。 離(li)合(he)(he)器(qi)(qi)(qi)可分為(wei):摩擦(ca)離(li)合(he)(he)器(qi)(qi)(qi)，或是利(li)(li)用液(ye)體作(zuo)(zuo)為(wei)傳(chuan)(chuan)動(dong)(dong)(dong)(dong)的(de)(de)(de)介(jie)質(即(ji)液(ye)力(li)偶合(he)(he)器(qi)(qi)(qi))，或是利(li)(li)用磁力(li)傳(chuan)(chuan)動(dong)(dong)(dong)(dong)(即(ji)電磁離(li)合(he)(he)器(qi)(qi)(qi)}

離合器撥叉是什么，有什么作用

離合器撥叉是汽車變速箱的一部分，屬于變速箱附件，主要用于離合器換擋。與變速手柄連接，位于手柄下端，撥動中間變速輪改變輸入輸出速比。撥叉一般是指手動變速箱的汽車，位于變速箱和發動機之間的離合器系統中。

踏板通過傳動系統將力傳遞給撥叉，撥叉推動分離軸承壓下離合器壓盤，將發動機和變速箱之間的動力傳遞分離。離合器接合時，踏板處于最高位置，分離桿和分離軸承之間有間隙δ。壓盤在壓緊彈簧的作用下壓緊從動盤，發動機的扭矩通過飛輪和壓盤傳遞到從動盤，再傳遞到變速器的第一軸。

離合器傳遞的最大扭矩取決于從動盤摩擦面的最大靜摩擦力。它與摩擦表面之間的壓力、摩擦面積和摩擦材料的性能有關。對于具有一定結構的離合器，其最大靜摩擦力是一個固定值。如果傳動系統傳遞的扭矩超過這個固定值，離合器就會打滑，從而起到過載保護的作用。

哈弗H9簡介

哈弗H9是哈弗首款高(gao)端越野SUV，為非承載式純正越野車身，整車外形凸顯大氣、簡約，充滿(man)力量感。具有LED日間行車燈和前大燈清(qing)洗功能，同時底部(bu)的霧燈處(chu)也(ye)增加了(le)大面積的鍍鉻裝飾