The air inlet pressure sensor 274-6720 ya mphaka 320D

The intake pressure sensor imazindikira kukakamizidwa kotheratu kwa manifold olowa kumbuyo kwa throttle. Imazindikira kusintha kwa kukakamizidwa kotheratu muzobwezeredwa molingana ndi liwiro la injini ndi katundu, kenako ndikuisintha kukhala voteji yamagetsi ndikuitumiza kugawo lowongolera injini (ECU). ECU imayang'anira kuchuluka kwa jakisoni wamafuta malinga ndi mphamvu yamagetsi.

mfundo ya ntchito

Pali mitundu yambiri yamasensa omwe amalowetsa, monga varistor ndi capacitor. Chifukwa cha ubwino wa nthawi yoyankha mofulumira, kulondola kwapamwamba, kukula kochepa komanso kusinthika kosinthika, varistor amagwiritsidwa ntchito kwambiri mu D-mtundu wa jakisoni.

Chithunzi 1 chikuwonetsa kugwirizana pakati pa piezoresistive intake pressure sensor ndi kompyuta. Chithunzi 2 ndi mfundo yogwira ntchito ya piezoresistive intake pressure sensor, ndi R mu mkuyu. 1 ndiye zopinga za R1, R2, R3 ndi R4 mumkuyu. 2, yomwe imapanga mlatho wa Whiston ndipo imamangiriridwa ku diaphragm ya silicon. The silicon diaphragm akhoza kupunduka pansi pa zochita za kupsyinjika mtheradi mu zobwezedwa zambiri, amene amayambitsa kusintha kukana mtengo wa kupsyinjika resistor R. Kukwera kwamphamvu mtheradi kupanikizika mu zobwezedwa zambiri, ndi mapindikidwe a silicon diaphragm, motero. kusintha kwakukulu kwa mtengo wotsutsa wa resistor R .. Ndiko kuti, kusintha kwa makina a silicon diaphragm kumasinthidwa kukhala chizindikiro chamagetsi, chomwe chimakulitsidwa ndi dera lophatikizidwa ndi kutuluka kwa ECU.

Manifold Absolute Pressure Sensor (MAP). Imagwirizanitsa machubu olowera ndi chubu cha vacuum, ndipo ndi kuchuluka kwa liwiro la injini, imamva kusintha kwa vacuum mumitundu yambiri, kenako ndikuisintha kukhala siginecha yamagetsi kuchokera pakusintha kukana kwamkati kwa sensor kuti ECU ikonze. kuchuluka kwa jakisoni wamafuta ndi nthawi yoyatsira.

Mu injini ya EFI, sensa yamphamvu yolowera imagwiritsidwa ntchito kuti izindikire kuchuluka kwa mpweya, womwe umatchedwa D-mtundu wa jakisoni wamtundu (mtundu wa velocity density). Sensa ya mpweya wotengera mpweya imazindikira kuchuluka kwa mpweya molakwika m'malo molunjika ngati sensa yotulutsa mpweya, ndipo imakhudzidwanso ndi zinthu zambiri, kotero pali kusiyana kwakukulu pakati pa kuzindikira ndi kukonza kachipangizo kamene kamatuluka, komanso zolakwika zomwe zimayambitsidwa nazo. ali ndi padera.