Mhepo inotora pressure sensor (ManifoldAbsolutePressureSensor), inozonzi MAP. Iyo yakabatana kune yakawanda yekutora ine vacuum chubhu. Iine akasiyana enjini yekumhanyisa mitoro, inogona kunzwa shanduko yevacuum mune yakawanda yekudyara, yobva yashandura shanduko yekupikisa mukati me sensor kuita chiratidzo chevoltage, inogona kushandiswa neECU kugadzirisa huwandu hwejekiseni uye yekubatidza nguva Angle.
MuEFI injini, iyo intake pressure sensor inoshandiswa kuona huwandu hwekutora, iyo inonzi D jekiseni system (velocity density type). Iyo yekutora kudzvanywa sensor inoona iyo yekutora vhoriyamu haionekwe zvakananga seyekuyerera kuyerera sensor, asi inoonekwa zvisina kunanga. Panguva imwecheteyo, inobatwawo nezvinhu zvakawanda, saka kune nzvimbo dzakawanda dzakasiyana mukuona nekugadzirisa kubva kune inoyerera inoyerera sensor, uye kukanganisa kunogadzirwa kunewo hunhu hwayo.
Iyo yekutora pressure sensor inoona iyo yakazara kudzvanywa kweiyo manifold yekutora kuseri kwe throttle. Iyo inoona shanduko yeakazara kudzvanywa mune yakawanda zvinoenderana nekumhanya kweinjini uye mutoro, uye yozoishandura kuita chiratidzo chemagetsi uye inotumira kune injini yekudzora unit (ECU). Iyo ECU inodzora iyo yekutanga mafuta jekiseni huwandu zvinoenderana nehukuru hweiyo chiratidzo voltage.
Kune akawanda marudzi e inlet pressure sensors, senge varistor mhando uye capacitive mhando. Varistor inoshandiswa zvakanyanya muD jekiseni system nekuda kwemabhenefiti ayo akadai sekukurumidza kupindura nguva, yakakwirira yekuona kurongeka, diki saizi uye kuchinjika kuisirwa.
Mufananidzo 1 unoratidza kubatana pakati pevaristor intake pressure sensor uye komputa. FIG. 2 inoratidza musimboti wekushanda wevaristor type inlet pressure sensor, uye R muFIG. 1 ndiyo inopikisa R1, R2, R3 uye R4 muFIG. 2, iyo inoumba bhiriji reWheatstone uye yakasungwa pamwe chete nesilicon diaphragm. Iyo silicon diaphragm inogona kukanganisa pasi pekumanikidzwa kwakazara mune yakawanda, zvichikonzera shanduko yepikisi kukosha kweiyo strain resistance R. Iyo yakakwirira mhedziso yekumanikidza mune yakawanda, iyo yakakura deformation yesilicon diaphragm uye yakakura shanduko ye kukosha kwekupikisa kwekupikisa R. Ndiko kuti, kuchinja kwemagetsi kwesilicon diaphragm kunoshandurwa kuva zviratidzo zvemagetsi, izvo zvinowedzerwa nedunhu rakabatanidzwa uye zvino kubuda kune ECU.
