3975375 Fuel Injection Pombi inokodzera Cummins QSL9 Injini Zvikamu

Kune marudzi matatu emafuta epombi ekudzora maseketi: ECU-inodzorwa mafuta pombi control circuit, switch-controlled controlled fuel pombi control circuit, uye fuel pombi control circuit ine speed control.

1.ECU inodzorwa nemafuta pombi control circuit

(1) Kana iyo iginition switch ikavhurwa, ikozvino inoyerera nepakati peiyo huru relay coil, vanobatika vanovharwa, uye magetsi anopa simba kuEFI.

(2) Kana injini yatangwa, mudziyo wekutanga (ST) terminal yekudzima moto wakabatana, uye coil L2 iri mudunhu rebreaker relay inopihwa simba, iyo inoburitsa kusveta kuvhara mabatiro edunhu rebreaker relay.Simba remagetsi rinopihwa pombi yemafuta, uye pombi yemafuta inoiswa mukushanda.

(3) Kana injini yangotangwa, iyo yekumhanyisa sensor inopinza injini yekumhanyisa chiratidzo Ne muECU.Panguva ino, transistor VT muECU inovhurwa, uye coil L1 mumhepo inoputika relay inosimbiswa, kuitira kuti maitirwo ayo arambe akavharwa, uye pombi yemafuta inoramba ichishanda.

(4) Kana injini ikamira kushanda, VT inobviswa, dhigirii relay relay contacts inobviswa, mutsara wemagetsi wepombi yemafuta unokanganiswa, uye pombi yemafuta inomira kushanda.

2. Switch-controlled controlled fuel pombi control circuit

(1) Batidza switch yekubatidza, iyo main relay contacts yakavharwa, uye magetsi anopa simba kune EFI system.

(2) Kana uchitanga, switch yekubatidza yakabatana neiyo ST terminal, iyo yedunhu relay relay coil L2 inopihwa simba, iyo yedunhu breaker relay contacts inovharwa, uye pombi yemafuta inotanga kushanda.

(3) Injini iri kushanda, uye mhepo yakasvetwa muinjini inoyerera nepamita yokuyerera kwemhepo.Indiro yekuyeresa iri mumhepo inoyerera mita inotenderera, ichibatidza pombi yemafuta, uye coil L1 yedunhu rinotyora relay rinotanga kusimbaradzwa.

3. Fuel pombi control circuit ine speed control

(1) Kana injini iri kushanda yakaderera kana yepakati kusvika kudiki mutoro, transistor muECU inovhurwa, uye coil yepombi yekudzora pombi relay inosimbiswa, zvichiita kuti kubata B kuvhara.Nekuda kweanopikisa akaiswa munhevedzano nedunhu, pombi yemafuta inoshanda nekumhanya kwakaderera.

(2) Kana injini iri kushanda nekumhanya uye mutoro unorema, transistor muECU inogurwa uye kubata A kunovharwa.Iyo pombi yemafuta yakabatana zvakananga kune magetsi uye inomhanya nekumhanya kukuru.