3975375 Impompo yokutofa iFuel ilingana neCummins QSL9 yaMacandelo eNjini

Kukho iintlobo ezintathu zeesekethe zokulawula impompo yepetroli: I-ECU-controlled fuel pump control circuit, switch-controlled-controlled fuel pump control circuit, kunye ne-fuel pump control circuit kunye nokulawula isantya.

I-1.ECU elawulwa yi-oil pump control circuit control

(1) Xa umbane wokutshisa uvuliwe, umbane uhamba nge-coil yokudlulisa i-relay engundoqo, abafowunelwa bavaliwe, kunye nokunikezelwa kwamandla ombane kwi-EFI.

(2) Xa injini iqaliswa, isixhobo sokuqalisa (i-ST) sesiphelo sokutshintsha komlilo sidityanisiwe, kwaye i-coil L2 kwi-relay breaker relay inamandla, eyenza ukufunxa ukuvala abafowunelwa be-relay ye-circuit relay.Unikezelo lwamandla lunikezelwa kwimpompo yamafutha, kwaye ipompo yepetroli ifakwe ekusebenzeni.

(3) Nje ukuba i-injini iqaliswe, i-sensor yesantya iya kufaka i-injini yesantya somqondiso we-Ne kwi-ECU.Ngeli xesha, i-transistor VT kwi-ECU ivuliwe, kwaye i-coil L1 kwi-relay breaker relay inamandla, ukwenzela ukuba abafowunelwa bayo baqhubeke behlala bevaliwe, kwaye ipompo yamafutha iyaqhubeka isebenza.

(4) Xa injini iyeka ukusebenza, i-VT inqanyuliwe, ukuqhagamshelwa kwe-circuit breaker relay kunqanyuliwe, umgca wokunikezelwa kwamandla wepompo yepetroli uphazamisekile, kwaye ipompo yepetroli iyayeka ukusebenza.

2. Isiphaluka solawulo lwempompo yamafutha etshintshwayo

(1) Vula i-ignition switch, abafowunelwa abaphambili be-relay bavaliwe, kwaye umbane unika amandla kwinkqubo ye-EFI.

(2) Xa uqala, ukutshitsha komlilo kuxhunyiwe kwi-ST terminal, i-coil breaker relay i-L2 inamandla, i-circuit breaker contacts relay ivaliwe, kwaye impompo yamafutha iqala ukusebenza.

(3) I-injini iyasebenza, yaye umoya ofunxa enjini uqukuqela kwimitha yokuhamba komoya.Ipleyiti yokulinganisa kwimitha yokuhamba komoya ijikeleza, ivula i-fuel pump switch, kunye ne-coil L1 ye-circuit breaker relay iqala ukunikwa amandla.

3. Isekethe yokulawula impompo yamafutha kunye nolawulo lwesantya

(1) Xa injini isebenza ngesantya esiphantsi okanye esiphakathi ukuya kumthwalo omncinci, i-transistor kwi-ECU ivuliwe, kwaye i-coil ye-relay yepompo yokulawula i-fuel inamandla, ibangela ukuba uqhagamshelwano lwe-B luvale.Ngenxa ye-resistor ebekwe kwichungechunge kunye nesekethe, ipompo yeoli isebenza ngesantya esiphantsi.

(2) Xa injini isebenza ngesantya esiphezulu kunye nomthwalo onzima, i-transistor kwi-ECU inqunyulwe kwaye i-contact A ivaliwe.Umpompo wamafutha uqhagamshelwe ngokuthe ngqo kunikezelo lwamandla kwaye uqhuba ngesantya esiphezulu.