Ukuze kubhekwane nodaba olunejubane eliphansi le-Komatsu PC60-8 excavator, ukuxazulula inkinga kufanele kwenziwe ngokulandelana kokulandela umqondo wokuthi “Ukuhlola Ngaphambi Kokushesha → Injini → I-Pilot/Hydraulic Main System → I-PC-EPC Solenoid Valve/Pump Control → Ivaluvu Yokusabalalisa/I-EC Cir” Indawo enephutha kufanele inqunywe ngokuhlanganisa izilinganiso zangempela zokucindezela, okwamanje, nokugeleza kwedatha. Ngezansi kunezinyathelo ezinemininingwane, ezingenziwa kanye namanani ajwayelekile.
- Ukuphepha Nokuhlola Ngaphambilini Ngokushesha (Susa Izinkinga Eziyisisekelo ku-5 Iminithis)
Imininingwane Yokuphepha
Misa injini → Khipha ukucindezela kusekethe enkulu/yendiza yomshayeli → Nqamula isiqoqelilwazi → Faka i-lockout-tagout ukuze uvimbele ukuqalisa ngephutha phakathi nokulungiswa.
Ukuhlola Okuyisisekelo
Imodi nokusebenza: Qinisekisa ukuthi i-excavator ikumodi yamandla engu-P noma ye-H nge-throttle esethwe ukuze ibe phezulu, ekhipha izilungiselelo ezingalungile njengemodi yomnotho noma umkhawulo wesivinini sokungenzi lutho.
Amafutha E-Hydraulic: Qinisekisa ukuthi izinga likawoyela limaphakathi ne-dipstick, izinga lokushisa likawoyela liphakathi kuka-45-55 ℃ (preheat injini ebandayo kuqala), uwoyela ucacile ngaphandle kwegwebu noma izinhlayiya zensimbi, futhi ayikho i-alamu yokuvala isihlungi. Uma noma yisiphi isimo singahlangabezwana, buyisela amafutha nesihlungi kuqala.
Ukuvuza Nokuxhumana: Hlola ukuvuza kwangaphandle empompini eyinhloko, i-valve eyinhloko, amapayipi kawoyela, namajoyinti. Amabhawodi axegayo noma ama-clamps angabangela ukulahlekelwa kwengcindezi.
Ukubophela Izintambo Nezixhumi: Qinisekisa ukuthi izixhumi ze-ECU, i-PC-EPC i-solenoid valve, inzwa yesivinini, njll., azikhululekile, ukungena kwamanzi, kanye ne-oxidation, nokuthi amatheminali aboshwe ngendlela efanele.
- Ukuhlolwa Kohlangothi Lwenjini (Susa Izinkinga Zomthombo Wamandla)
| Into Yokuhlola | Inani Elijwayelekile | Indlela Yokuhlola | Ukusebenza Kwephutha Nokuphatha |
| Isivinini esilinganiselwe | 2200±50rpm (ukuphakama okukhulu) | Funda nge-tachometer noma ithuluzi lokuxilonga | Isivinini esinganele → Hlola i-throttle pull rod/motor, umfutho kaphethiloli, izijovo zikaphethiloli, futhi ulinganise i-EFC electronic throttle |
| I-Fuel Pressure | Ingcindezi kaloliwe evamile ≥30MPa (isivinini sokungenzi lutho) / ≥140MPa (umthwalo osindayo) | Linganisa ekugcineni kwesitimela esivamile ngegeji yokucindezela | Ingcindezi ephansi → Miselela into yokuhlunga, hlola imibhobho kaphethiloli, bese ulinganisa iphampu yomjovo kaphethiloli |
| Ukuzinza kwesivinini | Ukushintshashintsha komthwalo ≤50rpm | Funda ukugeleza kwedatha ngethuluzi lokuxilonga | Ukushintshashintsha okukhulu → Hlola inzwa yesivinini, ukuvuza kwesistimu kaphethiloli, kanye nokucabanga kokulawula kwe-ECU |
| Ukufanisa Amandla | Ayikho injini emile/ukwehla kwesivinini (ngaphakathi kuka-±50rpm) | Qaphela isivinini ngesikhathi sokusebenza okuhlanganisiwe | Ukuma kwenjini → Hlola amandla afanayo phakathi kwepompo eyinhloko nenjini, bese ulinganisa i-valve ye-solenoid ye-PC-EPC |
- Ukuhlolwa Kwesistimu Ye-Pilot (Ukucindezela Komshayeli Okwanele kuyimbangela evamisile yesivinini somshini esinensayo)
Iphuzu Lokukala Lokucindezela: Indawo yepompo yokushayela ukushayela noma imbobo yokuhlola ingcindezi yomshayeli wevalvu eyinhloko.
Inani Elijwayelekile: 3.3±0.2MPa (33±2kgf/cm²) kukho kokubili isivinini sokungenzi lutho kanye ne-throttle enkulu.
Izinyathelo Zokusebenza
Linganisa ingcindezi lapho umshini ungenzi lutho ngaphandle kokusebenza. Uma ingcindezi ingaphansi kuka-3.1MPa, lungisa i-valve yokunciphisa ingcindezi yomshayeli (qinisa inati ngokwewashi ukuze ukhuphule ingcindezi, vula 1/4 isikhathi ngasinye).
Uma ingcindezi ingeke ikwazi ukulungiswa noma iguquguquke kakhulu → Hlukanisa i-valve yokunciphisa ingcindezi, hlola ukugcwala kwevalvu okuphakathi, ukuguga kwe-poppet, nokukhathala kwasentwasahlobo, bese uhlanza noma ushintshe ukuhlangana kwevalvu.
Uma ingcindezi ihlala ingashintshile lapho isileva sokulawula sisebenza → Hlola ukuvaleka kwesekethe kawoyela womshayeli noma ukuvuza kwangaphakathi kwevalve yesileva sokulawula, bese uhlola kabusha ngemva kokulungiswa.
- I-Hydraulic Main System Pressure and Flow Inspection (Isendlalelo Sokusebenza Esiyinhloko)
I-Main Pump Pressure (Imiswe Ivaluvu Eyinhloko Yokusiza)
Iphuzu Lokukala Lokucindezela: Amachweba okuhlola ukuphuma kwe-P1/P2 wepompo eyinhloko; vivinya ku-throttle ephezulu ngokucindezela okwakhiwe ukuze kukhululeke (isb., ngokubamba induku yebhakede endaweni ehoxisiwe).
Inani Elijwayelekile: 34.3±0.5MPa (343±5kgf/cm²).
Ukuphatha Okungajwayelekile: Ukucindezela okuphansi → Hlukanisa i-valve enkulu yokusiza, hlola ukugxumela/ukuguga nokonakala kwevalvu, bese uhlanza noma ushintsha ivalvu; Uma ukucindezela kuyinto evamile kodwa umshini usahamba kancane → Hlola ukugeleza kwepompo eyinhloko nokulawula kwe-PC-EPC.
I-Main Pump Flow (Kulungiswe I-PC-EPC Solenoid Valve kanye ne-PC Valve)
I-Standard Logic: Ingcindezi yokuphuma kwe-PC-EPC ingu-3.5-4.5MPa lapho ungenzi lutho ngaphandle kokusebenza; ingcindezi yehla iye ku-zero futhi yamanje ingu-160-260mA lapho i-throttle ephezulu ngaphandle kokusebenza.
Indlela Yokuhlola:
Funda i-PC-EPC yamanje ngethuluzi lokuxilonga: 850-1000mA ngesivinini esingenzi lutho, 160-260mA nge-throttle enkulu. Uma kungavamile, hlola i-solenoid valve kanye ne-ECU.
Linganisa ingcindezi yokuphuma kwe-PC-EPC: Ukucindezela kufanele kuhambisane nokwamanje. Uma ingcindezi ingavamile → Hqamula futhi uhlole ivalvu ye-solenoid ukuthi ayinakuphi ukuminyana kwe-valve core noma ukutubeka kwekhoyili, bese uyihlanza noma uyishintshe.
Ukulinganisa Ukugeleza: Linganisa ukuphuma kwepompo enkulu ngemitha yokugeleza. Izinga lokugeleza elijwayelekile lilinganiselwa ku-120L/min (iphampu engamawele). Uma ukugeleza kuphansi → Hlola ukuminyana kwemishini eguquguqukayo kanye nokuvuza kwesekethe yempendulo ye-LS.
- Ukuhlolwa Okujulile kwe-PC-EPC Solenoid Valve kanye nePump Control System (Electronic Control Core)
I-PC-EPC Solenoid Valve (Ingxenye Eyinhloko Yokulawula Ukukhishwa Kwephampu Eyinhloko)
Isilinganiso Sokumelana Ngaphandle Kwamandla: Ukumelana nekhoyili kungu-10-15Ω. Shintsha i-valve uma isifunda esivulekile noma isifunda esifushane sitholwa.
Ukuhlolwa kwamandla: Ingcindezi yokuphuma ingu-3.5-4.5MPa uma ungenzi lutho ngaphandle kokusebenza; ukucindezela kwehlela ku-zero nge-throttle enkulu ngaphandle kokusebenza. Uma kungenjalo, i-valve core iminyene/igugile futhi idinga ukuhlanzwa noma ukushintshwa.
Ukuhlolwa Komsebenzi: Khipha isixhumi se-PC-EPC. Uma lungekho ushintsho ekusebenzeni → I-valve ye-solenoid inephutha futhi kufanele ishintshwe.
I-Main Pump Variable Mechanism (i-PC Valve/LS Valve)
Hlola umgogodla we-valve ye-PC ukuze uthole ukugxumela/ukugqoka futhi uqinisekise ukuthi intwasahlobo inokunwebeka okuvamile; ngaphandle kwalokho, ukugeleza akukwazi ukulungiswa kahle.
Ngevalvu yokudlula ye-LS: Hlola ukuthi iringi yokuvala ayilimele yini futhi i-valve core ivaleka ngokuqinile ukuze kuvinjwe ukuvuza kwengcindezi ye-LS okungadala ukwehluleka kokulawula ukugeleza.
- Ukuhlolwa Kwevaluvu Yokusabalalisa kanye Neqembu Levaluvu Eyisizayo (Susa Ukuvuza Kwangaphakathi/Ukukhipha)
I-Main Valve Core: Hlukanisa futhi uhlole i-boom / ibhakede induku / ama-valve cores for jamming / scuffing; qinisekisa ukuthi imvume ingu-≤0.05mm. Gaya noma shintsha i-valve core uma kunesidingo.
I-Valve Yokuthulula: Hlola ukuthi i-valve core ivaleka ngokuqinile futhi iringi yokuvala ayilimele ukuze uvimbele uwoyela oyinhloko ukuthi ungagelezi ubuyela ethangini, okungabangela ukwehluleka ukwakha umfutho.
I-LS Bypass Valve: Kala ingcindezi ye-LS (≥2MPa ngesikhathi sokusebenza). Uma ingcindezi iphansi → Hlola ivalvu ukuthi ayivuzi yini bese ubuyisela iringi yokuvala noma umgogodla wevalvu.
I-Valve Yokunciphisa Ukucindezela / Hlola I-valve: Hlola i-valve yokunciphisa ingcindezi bese uhlola i-valve ku-valve enkulu ukuze uqinisekise ukucindezela okuzinzile futhi akukho ukuvuza kwangaphakathi.
- Ukuhlolwa Kwesekethe ne-ECU (Susa Okungajwayelekile Kwesiginali Yokulawula Ngogesi)
I-Fault Code Reading: Funda amakhodi e-FM/IMM ngethuluzi lokuxilonga, ugxile ku-P0216 (injector kaphethiloli), i-P0193 (ingcindezi kaphethiloli), kanye namaphutha ahlobene ne-PC-EPC, bese uxazulula inkinga ngokuya ngamakhodi.
Iphinikhodi ye-ECU Nokuxhumana:
Ukunikezwa kwamandla/Umhlaba: Ukunikezwa kwamandla okungaguquki kwe-ECU kungu-24V, ukunikezwa kwamandla kakhiye kungu-24V, futhi ukumelana nomhlabathi kungu-<1Ω. Uma kungavamile, hlola ama-fuse, ama-relay, namahhanisi ezintambo.
Ibhasi le-CAN: I-CAN-H voltage ingu-2.5-3.5V, i-CAN-L voltage ingu-1.5-2.5V. Uma i-voltage ingavamile, hlola isifunda esifushane sebhasi, i-open circuit, noma izinkinga ze-terminal resistor.
Ukulinganiswa Kwenzwa: Qinisekisa ukuthi amasiginali ukusuka kusivinini, ingcindezi (P1/P2/pilot), nezinzwa zezinga lokushisa zingaphakathi kwebanga elijwayelekile. Linganisa noma shintsha izinzwa uma ukuchezuka kukukhulu.
- Indawo Ejwayelekile Yephutha Nokuphatha (Kubalwa Ngokuvama)
| I-Fault Phenomenon | Izimbangela Ezivamile | Ukusingatha Isixazululo |
| Isivinini somshini ongasheshi + nomfutho ophansi womshayeli | Ingcindezi yomshayeli wendiza enciphisa ukugcwala kwe-valve / ukukhathala kwentwasahlobo | Hlanza / shintsha i-valve yokunciphisa ingcindezi futhi ulungise ingcindezi ibe ngu-3.3±0.2MPa |
| Isivinini somshini ongasheshi + nokucindezela okungavamile kwe-PC-EPC | I-Solenoid valve jamming / ukulimala kwekhoyili | Hlanza i-valve core noma shintsha i-valve ye-solenoid, futhi ulinganise i-current / pressure |
| Isivinini somshini ongasheshi + nokucindezela okukhulu okuphansi | Ukuvuza kwangaphakathi kwe-valve enkulu yokusiza / i-valve yokuthula | Hlukanisa, hlanza / shintsha ivalvu, bese uphinda ucindezelwa ku-34.3MPa |
| Isivinini somshini ongasheshi + ukuma kwenjini | Ukungafani phakathi kokugeleza kwepompo enkulu namandla enjini | Linganisa i-PC-EPC futhi uhlole isistimu kaphethiloli ukuze ihambisane nejika lamandla |
| Isivinini somshini esinensayo uma kushisa (okujwayelekile uma kubanda) | Ukuwohloka kukawoyela weHydraulic / ukuvala isihlungi | Shintsha uwoyela nesihlungi, futhi uhlanze isifunda samafutha |
- Amathuluzi Okuhlola Nezinyathelo Zokuqaphela
Amathuluzi Abalulekile
I-pilot/i-main pressure test gauge (0-40MPa), i-tachometer, ithuluzi lokuxilonga (isb., I-Komatsu IDSS), i-PC-EPC yocingo lokuhlola i-valve ye-solenoid, i-multimeter, i-flow meter.
Izinyathelo zokuphepha
Sebenzisa izixhumi ezijwayelekile zokulinganisa ingcindezi ukuvimbela ukuvuza nokulimala komuntu; khulula ingcindezi ngaphambi kokuhlakaza ngemuva kokulinganisa.
Phinda uhlole ngenjini eshisayo ngemva kwakho konke ukulungisa noma ukumiselela ukuze uqinisekise ukusebenza kahle ngaphansi kwezimo zokusebenza ezijwayelekile.
Beka kuqala ngokusebenzisa izingxenye eziyisipele zokuqala; amavalvu e-aftermarket solenoid angase abe nokuzwela okunganele.
- Isifinyezo Senqubo Yokusebenza Okusebenzayo (Sikleliswe Ngokubalulekile)
Ukuhlola kusengaphambili ngokushesha → Susa imodi, izinga likawoyela, ukuvuza, nezinkinga zezintambo zokuhlanganisa.
Injini → Kala isivinini, umfutho kaphethiloli, nokumatanisa amandla.
Isistimu yokushayela → Kala ingcindezi → Lungisa/hlanza i-valve yokunciphisa ukucindezela.
Isistimu eyinhloko → Kala ingcindezi enkulu → Hlola ivalve enkulu yokukhulula/ivalvu yokukhipha.
I-PC-EPC → Kala yamanje/ingcindezi → Hlanza/shintshanisa ivalvu ye-solenoid.
Iphampu enkulu/ivalvu yokusabalalisa → Hlola indlela eguquguqukayo, ukugxuma kwe-valve core, nokuvuza kwangaphakathi.
Isekethe/ECU → Funda amakhodi amaphutha → Hlola izikhonkwane, ukuxhumana, nezinzwa.
