空(kong)調壓力傳感(gan)器壓力傳感(gan)器是一種能將(jiang)檢測到的(de)(de)壓力信號轉換成(cheng)電(dian)子信號,由(you)電(dian)腦板芯(xin)片進行微(wei)處理(li),根據(ju)壓力檢測的(de)(de)結果對空(kong)調機的(de)(de)零部(bu)件(jian)進行精細的(de)(de)控制。
1、工作原理
為兩種壓力傳感器的外觀,如今絕大多數壓力傳感器都是電容式壓力傳感器,它由兩個靠近的平行膜片和一個堅固的小巧殼體構成。空(kong)(kong)(kong)(kong)調(diao)壓(ya)力傳(chuan)(chuan)感(gan)器(qi)(qi)是自動空(kong)(kong)(kong)(kong)調(diao)控(kong)制(zhi)(zhi)系(xi)統(tong)(tong)的(de)(de)一(yi)個傳(chuan)(chuan)感(gan)器(qi)(qi)元件,其作用(yong)是防止(zhi)制(zhi)(zhi)冷(leng)系(xi)統(tong)(tong)在極限制(zhi)(zhi)冷(leng)劑(ji)管(guan)路(lu)壓(ya)力下工作,并(bing)幫助控(kong)制(zhi)(zhi)發(fa)動機(ji)(ji)冷(leng)卻風(feng)扇(shan)的(de)(de)轉速。 壓(ya)力傳(chuan)(chuan)感(gan)器(qi)(qi)安裝在發(fa)動機(ji)(ji)艙內空(kong)(kong)(kong)(kong)調(diao)高(gao)壓(ya)管(guan)路(lu)上。該傳(chuan)(chuan)感(gan)器(qi)(qi)向發(fa)動機(ji)(ji)ECM或空(kong)(kong)(kong)(kong)調(diao)控(kong)制(zhi)(zhi)單(dan)元輸(shu)出壓(ya)力信號,當(dang)檢測到空(kong)(kong)(kong)(kong)調(diao)制(zhi)(zhi)冷(leng)管(guan)路(lu)壓(ya)力過(guo)低或過(guo)高(gao)時(shi),控(kong)制(zhi)(zhi)系(xi)統(tong)(tong)停(ting)止(zhi)對空(kong)(kong)(kong)(kong)調(diao)壓(ya)縮機(ji)(ji)離(li)合器(qi)(qi)供電,壓(ya)縮機(ji)(ji)停(ting)止(zhi)運轉,以免對空(kong)(kong)(kong)(kong)調(diao)系(xi)統(tong)(tong)造成損壞。當(dang)制(zhi)(zhi)冷(leng)劑(ji)壓(ya)力達(da)到一(yi)中等壓(ya)力值時(shi),散熱器(qi)(qi)風(feng)扇(shan)高(gao)速運轉,降低空(kong)(kong)(kong)(kong)調(diao)制(zhi)(zhi)冷(leng)劑(ji)壓(ya)力。
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