更換曲軸箱通(tong)風閥
1.曲(qu)軸(zhou)箱(xiang)(xiang)通風單(dan)向(xiang)閥安裝在氣門(men)蓋上,可以根據發動(dong)機(ji)的(de)不(bu)同工(gong)況和進(jin)氣管真空度的(de)變化,自(zi)動(dong)控制(zhi)曲(qu)軸(zhou)箱(xiang)(xiang)竄(cuan)氣的(de)再循環量。如果曲(qu)軸(zhou)箱(xiang)(xiang)單(dan)向(xiang)閥損壞,曲(qu)軸(zhou)箱(xiang)(xiang)內(nei)壓力會(hui)增加,機(ji)油消耗(hao)過快,廢氣也會(hui)受到(dao)影響。
曲軸通(tong)風閥的作用:
1。發(fa)動機工作時,進氣(qi)(qi)(qi)(qi)管真空通(tong)過空氣(qi)(qi)(qi)(qi)濾清器吸入(ru)(ru)新(xin)鮮空氣(qi)(qi)(qi)(qi),空氣(qi)(qi)(qi)(qi)軟(ruan)管進入(ru)(ru)氣(qi)(qi)(qi)(qi)缸蓋(gai)罩,再通(tong)過氣(qi)(qi)(qi)(qi)缸蓋(gai)和機體上(shang)的孔進入(ru)(ru)曲軸箱;
2.曲(qu)軸箱內的新(xin)鮮(xian)空氣(qi)(qi)與曲(qu)軸箱氣(qi)(qi)體(ti)混(hun)合,通(tong)(tong)過氣(qi)(qi)缸蓋罩、PCV閥、曲(qu)軸箱氣(qi)(qi)體(ti)軟管進(jin)(jin)入(ru)進(jin)(jin)氣(qi)(qi)管,最后(hou)通(tong)(tong)過進(jin)(jin)氣(qi)(qi)門(men)進(jin)(jin)入(ru)燃(ran)燒(shao)室(shi)燃(ran)燒(shao);
3.根據(ju)發動機的不同(tong)工(gong)況,PCV閥的開度不同(tong),通過它(ta)的空氣量也不同(tong),從而(er)實現曲軸箱(xiang)通風控制(zhi)。
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