Ukujongana nomba wesantya esicothayo se-Komatsu PC60-8 excavator, ulungiso lweengxaki kufuneka luqhutywe ngokulandelelana ngokulandela ingqiqo “Ukuhlola kwaPhambi kwaKhawuleza → Injini → Pilot/Hydraulic Main System → PC-EPC Solenoid Control/Pump Control → Distribution Valve/Relief Valve/→I-ECIiValve yokuNcedisa. Indawo ephosakeleyo kufuneka igqitywe ngokudibanisa imilinganiselo yokwenene yoxinzelelo, yangoku, kunye nokuhamba kwedatha. Ngezantsi kukho iinkcukacha, amanyathelo anokuthatyathwa kunye namaxabiso asemgangathweni.
- UKhuseleko kunye noHlolo oluKhawulezayo (Susa imiba eyiSiseko kwi-5 Umzuzus)
IiNgcaciso zoKhuseleko
Misa i-injini → Khupha uxinzelelo kwisekethi engundoqo/yokulingwa kwesekethe → Nxiba isixhasi → Faka i-lockout-tagout ukunqanda ukuqala ngempazamo ngexesha lolungiso.
Uhlolo olusisiseko
Imowudi kunye nokuSebenza: Qinisekisa ukuba i-excavator ikwimo ye-P okanye ye-H kunye ne-throttle iseti ukuya phezulu, ilawula izicwangciso ezingalunganga ezifana nemodi yezoqoqosho okanye umda wesantya sokungenzi lutho.
I-Oli yeHydraulic: Qinisekisa ukuba inqanaba leoli liphakathi kwe-dipstick, ukushisa kweoli kuphakathi kwe-45-55 ℃ (preheat injini ebandayo kuqala), i-oyile icacile ngaphandle kwe-foam okanye iincinci zetsimbi, kwaye akukho alamu yokuvala i-alamu. Ukuba nayiphi na imeko ayifezekanga, buyisela ioli kunye nesihluzo kuqala.
Ukuvuza kunye noQhagamshelwano: Jonga ukuvuza kwangaphandle kwimpompo ephambili, ivalve ephambili, imibhobho yeoli, kunye namalungu. Iibholiti okanye ii-clamps ezikhululekileyo zinokubangela ukulahleka koxinzelelo.
I-Wiring Harness kunye ne-Connectors: Qinisekisa ukuba izixhumi ze-ECU, i-valve ye-solenoid ye-PC-EPC, i-speed sensor, njl., ayinayo i-looseness, ukungena kwamanzi, kunye ne-oxidation, kwaye ukuba ii-terminals zixutywe ngokufanelekileyo.
- Ukuhlolwa kwecala le-Injini (Susa imiba yoMthombo waMandla)
| Into yoHlolo | Ixabiso eliMgangatho | Indlela Yokuhlola | Ukusebenza kwempazamo kunye nokuPhathwa |
| Isantya esiphezulu | 2200±50rpm (ubona bunzima buphezulu) | Funda nge-tachometer okanye isixhobo sokuxilonga | Isantya esinganelanga → Jonga i-throttle pull/motor, uxinzelelo lwamafutha, izitofu zamafutha, kunye nokulungelelanisa i-EFC throttle electronic |
| Uxinzelelo lwamafutha | Uxinzelelo lukaloliwe oluqhelekileyo ≥30MPa (isantya esingasebenziyo) / ≥140MPa (umthwalo onzima) | Ukulinganisa kwisiphelo sikaloliwe esiqhelekileyo ngegeyiji yoxinzelelo | Uxinzelelo oluphantsi → Buyisela indawo yesihluzi, hlola imilomo yamafutha, kwaye ulungelelanise impompo yokutofa kwamafutha |
| Isantya uzinzo | Ukuguquguquka komthwalo ≤50rpm | Funda ukuhamba kwedatha kunye nesixhobo sokuxilonga | Ukuguquguquka okukhulu → Jonga inzwa yesantya, ukuvuza kwenkqubo yamafutha, kunye nengqiqo yolawulo lweECU |
| Ukuhambelana kwamandla | Akukho injini imile/yehla ngesantya (ngaphakathi ± 50rpm) | Jonga isantya ngexesha lemisebenzi edibeneyo | Injini iyama → Jonga amandla othelekiso phakathi kwempompo engundoqo kunye ne-injini, kwaye ulungelelanise i-PC-EPC ivelufa yesolenoid |
- UkuHlolwa kweNkqubo yokuLinga (uxinzelelo loLungelo olungonelanga nguMba oQhonga ngesantya soMshini ocothayo)
Indawo yoMlinganiso woxinzelelo: Indawo yempompo yokulingwa okanye izibuko lovavanyo loxinzelelo lwevalvu engundoqo.
Ixabiso eliMgangatho: 3.3±0.2MPa (33±2kgf/cm²) kuzo zombini isantya sokungenzi nto kunye ne-throttle ephezulu.
Amanyathelo okusebenza
Umlinganiselo woxinzelelo xa umatshini ungasebenzi ngaphandle kokusebenza. Ukuba uxinzelelo lungaphantsi kwe-3.1MPa, lungisa i-valve yokunciphisa uxinzelelo lomqhubi (qinisa i-nut clockwise ukunyusa uxinzelelo, 1/4 jika ixesha ngalinye).
Ukuba uxinzelelo alunakuhlengahlengiswa okanye luguquguquka kakhulu → Nciphisa ivalve yokunciphisa uxinzelelo, jonga ivalve core jamming, ukunxitywa kwe-poppet, kunye nokudinwa kwentwasahlobo, emva koko ucoce okanye ufake indawo yevalve.
Ukuba uxinzelelo luhlala lungatshintshanga xa i-lever yokulawula isebenza → Hlola ukuvaleka kwesekethe ye-oyile yokulinga okanye ukuvuza kwangaphakathi kwevalve yolawulo, emva koko uvavanye kwakhona emva kokulungiswa.
- Uxinzelelo lweNkqubo ePhambili yeHydraulic kunye noHlolo lokuHamba (uMaleko wokuSebenza oNgqondo)
Uxinzelelo lweMpompo olungundoqo (Lusetwa yiValve yokuNceda engundoqo)
Indawo yoMlinganiso woxinzelelo: i-P1/P2 izibuko zokuvavanya i-outlet yempompo ephambili; uvavanyo kwi-throttle ephezulu kunye noxinzelelo olwakhelwe ukukhululeka (umzekelo, ngokubamba intonga yebhakethi kwindawo ehoxisiweyo).
Ixabiso eliMgangatho: 34.3±0.5MPa (343±5kgf/cm²).
Ukuphatha ngokuGqibelekayo: Uxinzelelo oluphantsi → Nciphisa ivalve engundoqo yokunceda, jonga undoqo wevalvu ejamkileyo/enxitywayo kunye nomonakalo wokutywina, emva koko ucoce okanye ubuyisele ivalve; Ukuba uxinzelelo luqhelekile kodwa umatshini usacotha → Hlola ukuhamba kwempompo engundoqo kunye nolawulo lwe-PC-EPC.
UkuHamba kweMpompo engundoqo (Kuhlengahlengiswa yi-PC-EPC Solenoid Valve kunye neValve yePC)
Ingqiqo esemgangathweni: uxinzelelo lwe-PC-EPC lwemveliso yi-3.5-4.5MPa xa idling ngaphandle kokusebenza; Uxinzelelo lwehla ukuya kwi-zero kwaye okwangoku yi-160-260mA kwi-throttle ephezulu ngaphandle kokusebenza.
Indlela yokuhlola:
Funda i-PC-EPC yangoku kunye nesixhobo sokuxilonga: 850-1000mA ngesantya esingenamsebenzi, i-160-260mA kwi-throttle ephezulu. Ukuba ayiqhelekanga, hlola ivalve ye-solenoid kunye ne-ECU.
Ukulinganisa i-PC-EPC yoxinzelelo lwemveliso: Uxinzelelo kufuneka luhambelane nelangoku. Ukuba uxinzelelo aluqhelekanga → Hluba kwaye ujonge ivalve ye-solenoid ukuba i-valve core jamming okanye ukudinwa kweekhoyili, uze uyicoce okanye uyibuyisele endaweni yayo.
Ulungelelwaniso lokuqukuqela: Linganisa imveliso yempompo engundoqo ngemitha yokuhamba. Umgangatho wokuhamba okusemgangathweni malunga ne-120L / min (ipompo ephindwe kabini). Ukuba ukuqukuqela kuphantsi → Jonga indlela eguquguqukayo yokuxinana kunye nokuvuza kwengxelo ye-LS.
- Uhlolo olunzulu lwe-PC-EPC yeValve yeSolenoid kunye neNkqubo yoLawulo lweMpompo (Undoqo woLawulo lweKhompyutha)
IValve ye-Solenoid ye-PC-EPC (iCandelo eliPhambili lokuLawula ukuHanjiswa kweMpompo engundoqo)
Umlinganiselo wokuchasa ngaphandle kwamandla: Ukumelana nekhoyili yi-10-15Ω. Buyisela ivalve ukuba isiphaluka esivulekileyo okanye isiphaluka esifutshane sifunyenwe.
Uvavanyo lwamandla: Uxinzelelo lwemveliso yi-3.5-4.5MPa xa ungenzi nto ngaphandle kokusebenza; Uxinzelelo lwehla luye kwi-zero kwi-throttle ephezulu ngaphandle kokusebenza. Ukuba akunjalo, undoqo wevalve uxinene/unxitywe kwaye ufuna ukucocwa okanye ukutshintshwa.
Uvavanyo lomsebenzi: Khipha ikhonkco lePC-EPC. Ukuba akukho tshintsho ekusebenzeni → Ivalve yesolenoid inengxaki kwaye kufuneka itshintshwe.
Indlela yokuGuquguquka kweMpompo engundoqo (iValve yePC/Ivalufa ye-LS)
Hlola undoqo wevalve ye-PC ukuba ijamming/ukunxiba kwaye uqinisekise ukuba intlakohlaza ine-elasticity eqhelekileyo; kungenjalo, ukuhamba akukwazi ukulungiswa ngokufanelekileyo.
Kwivalve ye-LS yokudlula: Khangela ukuba ikhonkco lokutywina ayonakaliswanga kwaye undoqo wevalve uvale ngokuqinileyo ukuthintela ukuvuza koxinzelelo lwe-LS okunokubangela ukusilela kolawulo lokuhamba.
- Ukuhlolwa kweValve yokuSasaza kunye neQela leValve eNcedisayo (Ukuphelisa ukuvuza kwaNgaphakathi / ukuLahla)
Undoqo weValve engundoqo: Hlulisa kwaye uhlole i-boom / ibhakethi intonga / i-valve cores ye-jamming / scuffing; qinisekisa ukucocwa ngu ≤0.05mm. Sila okanye ubuyisele undoqo wevalve ukuba kuyimfuneko.
I-Valve yokukhulula: Khangela ukuba i-valve core ivale ngokuqinileyo kwaye ikhonkco lokutywina alonakaliswanga ukukhusela i-oyile engundoqo ukuba ibuyele ngqo kwi-tank, enokubangela ukusilela kokwakhiwa koxinzelelo.
I-LS Bypass Valve: Ukulinganisa uxinzelelo lwe-LS (≥2MPa ngexesha lokusebenza). Ukuba uxinzelelo lusezantsi → Jonga ivalve ukuba ayivuzi kwaye ubuyisele umsesane wokutywina okanye umbindi wevalvu.
Uxinzelelo lokunciphisa iValve / iValve yokuHlola: Hlola i-valve yokunciphisa uxinzelelo kunye ne-valve yokukhangela kwi-valve engundoqo ukuqinisekisa uxinzelelo oluzinzileyo kwaye akukho kuvuza kwangaphakathi.
- Uhlolo lweSekethe kunye ne-ECU (Susa izinto ezingaqhelekanga zoMqondiso woLawulo loMbane)
I-Fault Code Reading: Funda iikhowudi ze-FM / IMM kunye nesixhobo sokuxilonga, ugxininise kwi-P0216 (injector ye-fuel), i-P0193 (uxinzelelo lwamafutha), kunye neempazamo ezinxulumene ne-PC-EPC, emva koko uxazulule iingxaki ngokweekhowudi.
Iphini ye-ECU kunye noNxibelelwano:
Unikezelo lwamandla / uMgangatho: Ukunikezelwa kwamandla rhoqo kwe-ECU yi-24V, i-key-on power supply yi-24V, kunye nokuchasana komhlaba <1Ω. Ukuba ayiqhelekanga, jonga iifusi, iireyiyidi, kunye neentambo zokubopha.
I-CAN Ibhasi: I-CAN-H i-voltage yi-2.5-3.5V, i-CAN-L yombane yi-1.5-2.5V. Ukuba amandla ombane akaqhelekanga, jonga isekethe emfutshane yebhasi, isekethe evulekileyo, okanye imiba yesixhasi seterminal.
I-Sensor Calibration: Qinisekisa iimpawu ezivela kwisantya, uxinzelelo (P1 / P2 / pilot), kunye nezinzwa zeqondo lokushisa zingaphakathi kwinqanaba eliqhelekileyo. Lungiselela okanye ubuyisele abenzi boluvo ukuba kukho ukutenxa kukhulu.
- Indawo eyiNgxaki yokuPhatha kunye noPhatho (Ibekwe ngokuQhosha)
| I-Fault Fenomenon | Oonobangela Rhoqo | Ukuphatha Isisombululo |
| Isantya somatshini esicothayo + uxinzelelo lomqhubi oluphantsi | Uxinzelelo lwe-pilot yokunciphisa i-valve jamming / ukudinwa kwentwasahlobo | Ukucoca / ukubuyisela i-valve yokunciphisa uxinzelelo kunye nokulungelelanisa uxinzelelo kwi-3.3±0.2MPa |
| Isantya somatshini esicothayo + uxinzelelo olungaqhelekanga lwePC-EPC | I-Solenoid valve jamming / umonakalo wekhoyili | Coca undoqo wevalve okanye ubuyisele ivalve ye-solenoid, kwaye ulinganise amandla akhoyo / uxinzelelo |
| Isantya somatshini esicothayo + uxinzelelo oluphambili olusezantsi | Ukuvuza kwangaphakathi kwevalvu engundoqo yokunceda/ivalve yokukhulula | Hlukanisa, coca / buyisela ivalve, kwaye uphinde ucinezele uxinzelelo kwi-34.3MPa |
| Isantya somatshini esicothayo + ukuma kwenjini | Ukungafani phakathi kokuhamba kwempompo engundoqo kunye namandla enjini | Linganisa i-PC-EPC kwaye uhlole inkqubo yamafutha ukuze ihambelane negophe lamandla |
| Isantya somatshini esicothayo xa kushushu (yesiqhelo xa kubanda) | Ukuwohloka kweoyile yeHydraulic / ukuvaleka kwesihluzi | Faka esikhundleni seoli kunye nesihlungi, kwaye ucoce isiphaluka seoli |
- Izixhobo zokuHlola kunye nokuQapha
Izixhobo eziBalulekileyo
I-pilot / i-main pressure test gauge (0-40MPa), i-tachometer, isixhobo sokuxilonga (umzekelo, i-Komatsu IDSS), i-PC-EPC i-solenoid valve test wire, i-multimeter, i-flow meter.
Izilumkiso
Sebenzisa izihlanganisi eziqhelekileyo zokulinganisa uxinzelelo ukukhusela ukuvuza kunye nokulimala komntu; ukukhulula uxinzelelo ngaphambi kokuqhawula emva kokulinganisa.
Phinda uvavanye nge-injini eshushu emva kwalo lonke uhlengahlengiso okanye ukutshintshwa ukuze uqinisekise ukusebenza phantsi kweemeko zokusebenza ezisemgangathweni.
Beka phambili usebenzisa iinxalenye zokuqala; iivalvu ze-solenoid ze-aftermarket zinokuba novakalelo olungonelanga.
- IsiShwankathelo seNkqubo yokuSebenza (Sibekwe ngokubaluleka)
Ukuhlolwa kwangaphambili okukhawulezileyo → Cima imowudi, inqanaba le-oyile, ukuvuza, kunye nemiba yokubopha iintambo.
Injini → Umlinganiselo wesantya, uxinzelelo lwepetroli, kunye nongqamaniso lwamandla.
Inkqubo yokulinga → Umlinganiselo woxinzelelo → Lungisa/coca ivalve yokunciphisa uxinzelelo.
Inkqubo engundoqo → Linganisa uxinzelelo olungundoqo → Hlola ivalve yokukhulula engundoqo/ivalve yokothula.
PC-EPC → Umlinganiselo wangoku/uxinzelelo → Coca/ubuyisele ivalve yesolenoid.
Impompo engundoqo/ivalve yosasazo → Hlola indlela eguquguqukayo, ivalve core jamming, kunye nokuvuza kwangaphakathi.
Isekethe/ECU → Funda iikhowudi zeempazamo → Hlola izikhonkwane, unxibelelwano, kunye nezivamvo.
