Ukuvulwa kwevalve yokunciphisa uxinzelelo kwahlulahlulwe kwiimeko ezimbini: ukuvula okusebenzayo kunye

ukuvulwa kokwenziwa.

Ukuvulwa okusebenzayo

Xa ifumana ulwazi olunempazamo kumacandelo athile anxulumeneyo, iyunithi yolawulo lwe-injini yombane (ECU) iya kwenza isicwangciso sokhuseleko kwaye iyalele ivalve yokuthintela uxinzelelo ukuba ivuleke (nokuba uxinzelelo lukaloliwe aluphezulu kakhulu), ngaloo ndlela kuthintelwa ukusilela okukhulu kwe-injini. Loluphi ulwazi olunempazamo oluya kubangela ukuba i-ECU yenze isicwangciso sokhuseleko?

1. Isignali yenzwa yoxinzelelo lukaloliwe

Xa i-sensor yoxinzelelo kaloliwe ithumela i-trail pressure over-limit signal kwi-ECU, nokuba iphezulu okanye iphantsi kakhulu, iya kubangela ukuba i-ECU yenze isicwangciso sokukhusela kwaye ivule i-valve yokunciphisa uxinzelelo. Kukho izizathu ezininzi zenzwa yoxinzelelo lwengoma ukuchaza umyalezo ongalunganga. Undoqo luxinzelelo olungaqhelekanga lokungena kwe-oyile okanye uxinzelelo lwe-oyile yokubuya, njengokungonelanga kweoyile kumgca we-oyile ophantsi, ukunxiba kwempompo yoxinzelelo oluphezulu, ukutywinwa okungalunganga kwevalve yokunciphisa uxinzelelo, kunye nomthamo ogqithisiweyo we-oyile wokubuyisela kwi-injector. . Umgca we-oyile uvaliwe, njl.

2. Isignali yokungaphumeleli kwevalve yokulinganisa i-fuel

Ukuze kuphuculwe ukusebenza kakuhle, impompo yoxinzelelo oluphezulu lwenkqubo kaloliwe eqhelekileyo ixhotyiswe ngeyunithi yokulinganisa ubungakanani bamafutha, oko kukuthi ivalve yokulinganisa i-fuel. Ilawula ukunyanzeliswa kweoli kwi-high-pressure rail ngokulawula inani leoli elingena kwimpompo yoxinzelelo oluphezulu. I-ECU ilawula iyunithi yokulinganisa ngokuguqula umjikelo womsebenzi ngaphakathi kwiyunithi yokulinganisa ngeempawu ze-pulse. Xa i-valve yokulinganisa ingaphumeleli, ithetha ukuba i-ECU ayikwazi ukugqiba ulawulo oluchanekileyo loxinzelelo lukaloliwe. Ngoko ke, emva kokuba ifumene ulwazi oluphosakeleyo olunxulumene ne-valve yokulinganisa, njengesiphaluka esifutshane, i-circuit evulekileyo, okanye i-fault engavamile yokushisa, i-ECU iya kuphumeza isicwangciso sokukhusela ukukhawulela i-valve yoxinzelelo iya kuvula kwakhona.

3. Imodyuli yobonelelo lwamandla e-Sensor 3 isignali yempazamo

Imodyuli ye-3 ye-sensor ye-sensor inikezela umbane we-5V kwi-sensors ezininzi, kubandakanywa neenzwa zoxinzelelo lukaloliwe. Xa imodyuli yesi-3 yonikezelo lwamandla oluvo isilela, oko kuthetha ukuba zonke iinzwa ezinoxanduva zingasebenza ngokungaqhelekanga. Ngoko ke, xa i-ECU ifumana ulwazi oluphosakeleyo olunxulumene nemodyuli ye-sensor yamandla e-3, iya kwenza isicwangciso sokukhusela kwaye i-valve yokunciphisa uxinzelelo iya kuvula.

4. Iimpazamo ezinxulumene ne-ECU

Njengomphathi-oyintloko wenkqubo kaloliwe eqhelekileyo, imiphumo yokungaphumeleli kwe-ECU inokucingelwa. Ngoko ke, xa inkqubo ibona ulwazi lwephutha olunxulumene ne-ECU, iya kuphumeza isicwangciso sokukhusela.

Ukuvula nje

Izizathu eziqhelekileyo zokuvula i-passive zibandakanya: i-valve yokulinganisa i-fuel metering okanye i-valve yokunciphisa i-valve, ukungaphumeleli kwempompo yoxinzelelo oluphezulu, umonakalo wenzwa yoxinzelelo lukaloliwe obangela uxinzelelo lukaloliwe ngaphandle kolawulo, ukuvaleka kombhobho we-oyile, njl njl.