空調壓力(li)傳感器壓力(li)傳感器是一(yi)種能將(jiang)檢測到(dao)的壓力(li)信號(hao)(hao)轉(zhuan)換成電子信號(hao)(hao),由電腦板芯片進行(xing)微(wei)處理,根據壓力(li)檢測的結(jie)果(guo)對空調機的零部件進行(xing)精細的控制。
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)調(diao)(diao)壓(ya)(ya)力(li)(li)(li)傳(chuan)感(gan)器(qi)是自(zi)動空(kong)(kong)(kong)調(diao)(diao)控(kong)制(zhi)(zhi)系(xi)統的一個傳(chuan)感(gan)器(qi)元(yuan)件(jian),其作(zuo)(zuo)用是防(fang)止(zhi)(zhi)制(zhi)(zhi)冷(leng)系(xi)統在極限制(zhi)(zhi)冷(leng)劑管(guan)路(lu)壓(ya)(ya)力(li)(li)(li)下(xia)工作(zuo)(zuo),并(bing)幫助(zhu)控(kong)制(zhi)(zhi)發動機(ji)(ji)(ji)冷(leng)卻風(feng)扇的轉速(su)。 壓(ya)(ya)力(li)(li)(li)傳(chuan)感(gan)器(qi)安裝(zhuang)在發動機(ji)(ji)(ji)艙內(nei)空(kong)(kong)(kong)調(diao)(diao)高(gao)(gao)(gao)壓(ya)(ya)管(guan)路(lu)上。該(gai)傳(chuan)感(gan)器(qi)向發動機(ji)(ji)(ji)ECM或(huo)空(kong)(kong)(kong)調(diao)(diao)控(kong)制(zhi)(zhi)單元(yuan)輸出壓(ya)(ya)力(li)(li)(li)信號(hao),當(dang)檢測到(dao)(dao)空(kong)(kong)(kong)調(diao)(diao)制(zhi)(zhi)冷(leng)管(guan)路(lu)壓(ya)(ya)力(li)(li)(li)過低(di)或(huo)過高(gao)(gao)(gao)時,控(kong)制(zhi)(zhi)系(xi)統停止(zhi)(zhi)對空(kong)(kong)(kong)調(diao)(diao)壓(ya)(ya)縮(suo)機(ji)(ji)(ji)離合器(qi)供電(dian),壓(ya)(ya)縮(suo)機(ji)(ji)(ji)停止(zhi)(zhi)運轉,以免對空(kong)(kong)(kong)調(diao)(diao)系(xi)統造成損壞。當(dang)制(zhi)(zhi)冷(leng)劑壓(ya)(ya)力(li)(li)(li)達到(dao)(dao)一中等(deng)壓(ya)(ya)力(li)(li)(li)值時,散熱(re)器(qi)風(feng)扇高(gao)(gao)(gao)速(su)運轉,降低(di)空(kong)(kong)(kong)調(diao)(diao)制(zhi)(zhi)冷(leng)劑壓(ya)(ya)力(li)(li)(li)。
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