狼群影院

離合器拔叉簡介

1、保證汽(qi)車(che)平(ping)穩(wen)起(qi)步(bu)(bu) 這是離(li)(li)(li)合(he)(he)(he)(he)器(qi)(qi)(qi)的(de)首要(yao)功能(neng)(neng)。在(zai)(zai)汽(qi)車(che)起(qi)步(bu)(bu)前(qian)，自然要(yao)先起(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)。而(er)汽(qi)車(che)起(qi)步(bu)(bu)時，汽(qi)車(che)是從(cong)完全靜止的(de)狀態逐(zhu)步(bu)(bu)加速的(de)。如果傳(chuan)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)系(xi)(xi)(它聯系(xi)(xi)著整個汽(qi)車(che))與(yu)發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)剛性地聯系(xi)(xi)，則變速器(qi)(qi)(qi)一(yi)掛(gua)上檔(dang)，汽(qi)車(che)將突然向前(qian)沖一(yi)下，但并不(bu)(bu)能(neng)(neng)起(qi)步(bu)(bu)。這是因為汽(qi)車(che)從(cong)靜止到(dao)(dao)前(qian)沖時，產生(sheng)很大慣性力(li)，對(dui)發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)造(zao)成很大地阻力(li)矩(ju)。在(zai)(zai)這慣性阻力(li)矩(ju)作(zuo)(zuo)用下，發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)在(zai)(zai)瞬時間轉(zhuan)速急劇下降到(dao)(dao)最(zui)低(di)(di)穩(wen)定(ding)轉(zhuan)速(一(yi)般(ban)300-500RPM)以(yi)下，發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)即(ji)熄火(huo)而(er)不(bu)(bu)能(neng)(neng)工作(zuo)(zuo)，當然汽(qi)車(che)也不(bu)(bu)能(neng)(neng)起(qi)步(bu)(bu)。 因此，我們就需要(yao)離(li)(li)(li)合(he)(he)(he)(he)器(qi)(qi)(qi)的(de)幫助了。在(zai)(zai)發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)起(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)后，汽(qi)車(che)起(qi)步(bu)(bu)之前(qian)，駕駛員先踩(cai)下離(li)(li)(li)合(he)(he)(he)(he)器(qi)(qi)(qi)踏板，將離(li)(li)(li)合(he)(he)(he)(he)器(qi)(qi)(qi)分離(li)(li)(li)，使(shi)發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)和傳(chuan)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)系(xi)(xi)脫開，再將變速器(qi)(qi)(qi)掛(gua)上檔(dang)，然后逐(zhu)漸(jian)松開離(li)(li)(li)合(he)(he)(he)(he)器(qi)(qi)(qi)踏板，使(shi)離(li)(li)(li)合(he)(he)(he)(he)器(qi)(qi)(qi)逐(zhu)漸(jian)接(jie)合(he)(he)(he)(he)。在(zai)(zai)接(jie)合(he)(he)(he)(he)過(guo)程中，發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)所受阻力(li)矩(ju)逐(zhu)漸(jian)增大，故應同(tong)時逐(zhu)漸(jian)踩(cai)下加速踏板，即(ji)逐(zhu)步(bu)(bu)增加對(dui)發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)的(de)燃料(liao)供給量，使(shi)發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)的(de)轉(zhuan)速始終(zhong)保持在(zai)(zai)最(zui)低(di)(di)穩(wen)定(ding)轉(zhuan)速上，而(er)不(bu)(bu)致熄火(huo)。同(tong)時，由于離(li)(li)(li)合(he)(he)(he)(he)器(qi)(qi)(qi)的(de)接(jie)合(he)(he)(he)(he)緊(jin)密程度逐(zhu)漸(jian)增大，發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)經(jing)傳(chuan)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)系(xi)(xi)傳(chuan)給驅動(dong)(dong)(dong)(dong)(dong)(dong)(dong)車(che)輪的(de)轉(zhuan)矩(ju)便逐(zhu)漸(jian)增加，到(dao)(dao)牽引力(li)足以(yi)克服起(qi)步(bu)(bu)阻力(li)時，汽(qi)車(che)即(ji)從(cong)靜止開始運動(dong)(dong)(dong)(dong)(dong)(dong)(dong)并逐(zhu)步(bu)(bu)加速

2、保證傳(chuan)動(dong)(dong)(dong)系換檔(dang)時(shi)工作(zuo)平(ping)(ping)順 2:實現平(ping)(ping)順的(de)換檔(dang) 在(zai)汽車行駛過程中(zhong)(zhong)，為適應(ying)不斷變(bian)化的(de)行駛條件，傳(chuan)動(dong)(dong)(dong)系經常要更換不同(tong)檔(dang)位(wei)(wei)工作(zuo)。實現齒(chi)輪(lun)(lun)式變(bian)速器的(de)換檔(dang)，一般是撥動(dong)(dong)(dong)齒(chi)輪(lun)(lun)或其他掛檔(dang)機構，使(shi)原用檔(dang)位(wei)(wei)的(de)某一齒(chi)輪(lun)(lun)副(fu)推出傳(chuan)動(dong)(dong)(dong)，再(zai)使(shi)另一檔(dang)位(wei)(wei)的(de)齒(chi)輪(lun)(lun)副(fu)進入工作(zuo)。在(zai)換檔(dang)前必須踩下離合器踏板，中(zhong)(zhong)斷動(dong)(dong)(dong)力傳(chuan)動(dong)(dong)(dong)，便于使(shi)原檔(dang)位(wei)(wei)的(de)嚙合副(fu)脫(tuo)開，同(tong)時(shi)使(shi)新檔(dang)位(wei)(wei)嚙合副(fu)的(de)嚙合部位(wei)(wei)的(de)速度逐步(bu)(bu)趨向同(tong)步(bu)(bu)，這(zhe)樣進入嚙合時(shi)的(de)沖擊可以大大的(de)減小，實現平(ping)(ping)順的(de)換檔(dang)。

 3、防止(zhi)傳動(dong)(dong)(dong)(dong)(dong)(dong)系(xi)過載 當(dang)汽車(che)進行緊急制(zhi)動(dong)(dong)(dong)(dong)(dong)(dong)時，若沒(mei)有離(li)合器(qi)(qi)，則發(fa)動(dong)(dong)(dong)(dong)(dong)(dong)機(ji)將因(yin)和傳動(dong)(dong)(dong)(dong)(dong)(dong)系(xi)剛性連接而(er)急劇降低轉速，因(yin)而(er)其(qi)中(zhong)所有運(yun)動(dong)(dong)(dong)(dong)(dong)(dong)件將產生(sheng)很大(da)的(de)慣性力(li)矩(其(qi)數值可(ke)(ke)能大(da)大(da)超(chao)過發(fa)動(dong)(dong)(dong)(dong)(dong)(dong)機(ji)正常工作(zuo)時所發(fa)出的(de)最(zui)大(da)扭距)，對傳動(dong)(dong)(dong)(dong)(dong)(dong)系(xi)造(zao)成超(chao)過其(qi)承載能力(li)的(de)載荷，而(er)使機(ji)件損壞。有了離(li)合器(qi)(qi)，便(bian)可(ke)(ke)以(yi)(yi)依靠(kao)離(li)合器(qi)(qi)主(zhu)動(dong)(dong)(dong)(dong)(dong)(dong)部分和從動(dong)(dong)(dong)(dong)(dong)(dong)部分之間可(ke)(ke)能產生(sheng)的(de)相對運(yun)動(dong)(dong)(dong)(dong)(dong)(dong)以(yi)(yi)消除這(zhe)一危險。因(yin)此，我們需要離(li)合器(qi)(qi)來限制(zhi)傳動(dong)(dong)(dong)(dong)(dong)(dong)系(xi)所承受的(de)最(zui)大(da)扭距，保證安(an)全(quan)。 離(li)合器(qi)(qi)可(ke)(ke)分為(wei):摩擦離(li)合器(qi)(qi)，或是利用液(ye)體作(zuo)為(wei)傳動(dong)(dong)(dong)(dong)(dong)(dong)的(de)介(jie)質(即(ji)液(ye)力(li)偶(ou)合器(qi)(qi))，或是利用磁力(li)傳動(dong)(dong)(dong)(dong)(dong)(dong)(即(ji)電磁離(li)合器(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。

長城C30新能源簡介

從(cong)長(chang)城(cheng)汽(qi)車官方(fang)渠道(dao)獲悉，其轎車業務將擴展新能源(yuan)汽(qi)車領域，其中(zhong)首款純(chun)電動轎車C30電動版于(yu)2016年第二季度上市，其(qi)續(xu)航(hang)里(li)程達到(dao)200km