Sensor yekumanikidza mweya inopinda (ManifoldAbsolutePressureSensor), inozonzi MAP. Yakabatana ne intake manifold ne vacuum tube. Nekumhanya kwakasiyana kweinjini, inogona kunzwa shanduko ye vacuum mu intake manifold, uye yozoshandura shanduko ye resistance mukati me sensor kuita voltage signal, iyo inogona kushandiswa neECU kugadzirisa huwandu hwe injection uye ignition timing Angle.
Muinjini yeEFI, sensor yekumanikidza intake inoshandiswa kuona huwandu hweintake, iyo inonzi D injection system (rudzi rwevelocity density). Iyo sensor yekumanikidza intake inoona huwandu hweintake hahuonekwi zvakananga se sensor yekuyerera kweintake, asi hunoonekwa zvisina kunanga. Panguva imwe chete, inokanganiswawo nezvinhu zvakawanda, saka kune nzvimbo dzakawanda dzakasiyana mukuona nekuchengetedza kubva ku sensor yekuyerera kweintake, uye kukanganisa kunokonzerwa kunewo hunyanzvi hwayo.
Sensor yekumanikidza inopinda inoona kumanikidzwa kwechinhu chinopinzwa inopinda iri kuseri kwe throttle. Inoona kuchinja kwesimba remagetsi muchinhu chinopinzwa inopinda zvichienderana nekumhanya kweinjini uye mutoro wayo, uye yozoishandura kuita signal voltage yoitumira ku engine control unit (ECU). ECU inodzora huwandu hwemafuta anoshandiswa zvichienderana nehukuru hwesimba remagetsi.
Kune mhando dzakawanda dzema inlet pressure sensors, akadai se varistor type ne capacitive type. Varistor inoshandiswa zvakanyanya mu D injection system nekuda kwezvakanaka zvayo zvakaita sekukurumidza kupindura nguva, kunyatsoonekwa kwakanyanya, saizi diki uye kuiswa kunochinjika.
Mufananidzo 1 unoratidza kubatana kuripo pakati pevaristor intake pressure sensor nekombiyuta. Mufananidzo 2 unoratidza mashandiro evaristor type inlet pressure sensor, uye R muMufananidzo 1 ndiwo ma strain resistors R1, R2, R3 naR4 muMufananidzo 2, ayo anoumba Wheatstone bridge uye akabatana pamwe chete nesilicon diaphragm. Silicon diaphragm inogona kuchinja pasi pekumanikidzwa kwakazara mumanifold, zvichikonzera shanduko ye resistance value ye strain resistance R. Kana absolute pressure yakakwira mumanifold, deformation yesilicon diaphragm yakakura uye resistance value ye resistance R yakakura. Kureva kuti, mechanical changes yesilicon diaphragm inoshandurwa kuita masignal emagetsi, ayo anowedzerwa ne integrated circuit uye obva abuda kuECU.
