進氣管真空度(du)的(de)基本檢(jian)測方法(fa)

  （1）起(qi)動(dong)發動(dong)機，使其達到正常工作(zuo)溫度(du)；

  （2）然后將變速桿置于空檔(dang)，并(bing)使發動機空轉。

  （3）找到節氣門后面專門設置的進氣系統的真空檢測孔，并在那里連接真空計（如果沒有這樣的檢測孔，則可以拆卸進氣歧管上的真空管并使用三通 連接真空計），即可執行測試。

  進氣管真空異常對自動控制系統的影響

  由于進(jin)氣(qi)(qi)管(guan)(guan)(guan)的真(zhen)(zhen)空(kong)(kong)(kong)度(du)(du)意味著(zhu)發動機轉速和負荷的大小，因(yin)此(ci)進(jin)氣(qi)(qi)管(guan)(guan)(guan)的真(zhen)(zhen)空(kong)(kong)(kong)度(du)(du)變(bian)化意味著(zhu)發動機的速度(du)(du)和負荷發生了(le)變(bian)化，因(yin)此(ci)在電(dian)子控(kong)制(zhi)(zhi)汽(qi)車(che)中，負壓(ya)是 發動機進(jin)氣(qi)(qi)管(guan)(guan)(guan)用作動力(li)(li)源，廣泛用于電(dian)子控(kong)制(zhi)(zhi)系(xi)(xi)統(tong)(tong)的執行(xing)器(qi)(qi)及(ji)其他(ta)裝置，例如(ru)進(jin)氣(qi)(qi)歧管(guan)(guan)(guan)的膜片對壓(ya)力(li)(li)傳感器(qi)(qi)，燃油壓(ya)力(li)(li)調節器(qi)(qi)，曲軸箱強制(zhi)(zhi)通風(feng)系(xi)(xi)統(tong)(tong)，燃油蒸(zheng)氣(qi)(qi)回收系(xi)(xi)統(tong)(tong)，廢(fei)氣(qi)(qi)再循環系(xi)(xi)統(tong)(tong) ，巡航控(kong)制(zhi)(zhi)系(xi)(xi)統(tong)(tong)真(zhen)(zhen)空(kong)(kong)(kong)致動器(qi)(qi)和真(zhen)(zhen)空(kong)(kong)(kong)助力(li)(li)器(qi)(qi)，用于制(zhi)(zhi)動系(xi)(xi)統(tong)(tong)。 如(ru)果(guo)進(jin)氣(qi)(qi)管(guan)(guan)(guan)的真(zhen)(zhen)空(kong)(kong)(kong)異(yi)常(chang)，將(jiang)嚴重影響上述系(xi)(xi)統(tong)(tong)的正(zheng)常(chang)運行(xing)。