凸輪軸(zhou)瓦(wa)凸輪軸(zhou)軸(zhou)瓦(wa)的(de)作用(yong)是(shi)用(yong)于(yu)連桿或(huo)者曲(qu)軸(zhou)在高速運轉的(de)時候起(qi)到摩(mo)擦保(bao)護(hu)作用(yong),在發(fa)動機使(shi)用(yong)過程中,時有燒瓦(wa)抱(bao)軸(zhou)事故發(fa)生(sheng),多是(shi)由(you)于(yu)軸(zhou)瓦(wa)裝配不(bu)當造成的(de)。軸(zhou)瓦(wa)抱(bao)軸(zhou)燒損主(zhu)要是(shi)由(you)于(yu)軸(zhou)頸與(yu)軸(zhou)瓦(wa)之間的(de)潤(run)滑(hua)油膜破(po)裂,導致軸(zhou)瓦(wa)與(yu)曲(qu)軸(zhou)產生(sheng)摩(mo)擦。
軸(zhou)(zhou)瓦(wa)(wa)(wa)是(shi)(shi)(shi)(shi)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)的(de)(de)一種(zhong)(zhong)。軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)分為(wei)滑(hua)動(dong)(dong)(dong)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)和滾動(dong)(dong)(dong)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng),滑(hua)動(dong)(dong)(dong)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)就是(shi)(shi)(shi)(shi)軸(zhou)(zhou)瓦(wa)(wa)(wa),滾動(dong)(dong)(dong)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)就是(shi)(shi)(shi)(shi)有滾珠的(de)(de)那種(zhong)(zhong)。軸(zhou)(zhou)瓦(wa)(wa)(wa)又分兩種(zhong)(zhong),一種(zhong)(zhong)是(shi)(shi)(shi)(shi)分為(wei)兩半的(de)(de)瓦(wa)(wa)(wa),就叫軸(zhou)(zhou)瓦(wa)(wa)(wa)。另一種(zhong)(zhong)是(shi)(shi)(shi)(shi)統一的(de)(de),叫軸(zhou)(zhou)套。軸(zhou)(zhou)瓦(wa)(wa)(wa)用巴氏合金制成,具有含(han)油(you)(you)和耐(nai)磨功能。轉(zhuan)速(su)較(jiao)(jiao)低,載荷較(jiao)(jiao)大,多(duo)數用滑(hua)動(dong)(dong)(dong)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)即(ji)軸(zhou)(zhou)瓦(wa)(wa)(wa);轉(zhuan)速(su)較(jiao)(jiao)高,載荷較(jiao)(jiao)小,多(duo)數用滾動(dong)(dong)(dong)軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)。例如火車輪(lun)軸(zhou)(zhou)的(de)(de)運(yun)轉(zhuan)都是(shi)(shi)(shi)(shi)用軸(zhou)(zhou)瓦(wa)(wa)(wa)相配。只要有轉(zhuan)動(dong)(dong)(dong)的(de)(de)地方就會(hui)有軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng),就會(hui)有軸(zhou)(zhou)承(cheng)(cheng)(cheng)(cheng)的(de)(de)潤(run)滑(hua)。發動(dong)(dong)(dong)機上(shang)(shang)最(zui)重要的(de)(de)軸(zhou)(zhou)瓦(wa)(wa)(wa)是(shi)(shi)(shi)(shi)在曲(qu)(qu)軸(zhou)(zhou)上(shang)(shang)。曲(qu)(qu)軸(zhou)(zhou)上(shang)(shang),有支撐曲(qu)(qu)軸(zhou)(zhou)運(yun)轉(zhuan)的(de)(de)曲(qu)(qu)軸(zhou)(zhou)軸(zhou)(zhou)頸(jing),和連(lian)接連(lian)桿的(de)(de)連(lian)桿軸(zhou)(zhou)徑(jing)。這(zhe)些軸(zhou)(zhou)頸(jing)上(shang)(shang)都配有軸(zhou)(zhou)瓦(wa)(wa)(wa)。運(yun)轉(zhuan)的(de)(de)軸(zhou)(zhou),和固定的(de)(de)瓦(wa)(wa)(wa),相互摩(mo)擦,必須(xu)供給足夠(gou)的(de)(de)潤(run)滑(hua)油(you)(you)。令軸(zhou)(zhou)與瓦(wa)(wa)(wa)分開,摩(mo)擦的(de)(de)只是(shi)(shi)(shi)(shi)兩者之間(jian)的(de)(de)油(you)(you)膜。在連(lian)桿小頭與活塞(sai)銷(xiao)之間(jian),在配氣凸輪(lun)軸(zhou)(zhou)上(shang)(shang),在搖臂軸(zhou)(zhou)上(shang)(shang)..都有軸(zhou)(zhou)瓦(wa)(wa)(wa)。
提(ti)起捷豹,我們(men)對它的印象可能是舒適,安(an)靜,以及美(mei)(mei)輪(lun)美(mei)(mei)奐的英(ying)倫風(feng)外(wai)觀,可捷(jie)豹發(fa)布的這款(kuan)新車,似乎只(zhi)關心一個問題——速度!
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