Diesel Fuel Injector 456-3493 don Caterpillar C9.3 CAT Truck Engine Spare Parts

Dynamic cavitation a cikin babban aikin injector dizal - gwajin gwaji da CFD (Kashi na 1)

Abstract.

An yi amfani da haɗin siminti da dabarun gwaji na musamman don bincikar kwararar ruwa mai wucewa da al'amuran cavitation na na'urar sarrafawa a cikin injerar dizal mai girma.An kama dabi'ar cavitation mai ƙarfi akan babban sikeli bayyananne samfurin, wanda aka yi amfani da shi don haɓakawa da kuma inganta ingantaccen tsarin CFD hargitsi tare da Large Eddy Simulation.Ana amfani da waɗannan dabarun a cikin Delphi don samun fahimta da haɓaka aikin injector a girman gaske.

1 Gabatarwa

Injector din diesel tabbas shine mafi mahimmancin abu don samun nasarar aikin injin mai ƙima tare da ƙarancin hayaki.Don haka dole ne a sarrafa injectors don injunan aiki mai girma da daidaito.A sakamakon haka, dole ne a tsara bawul ɗin sarrafawa na hydraulic da ƙwanƙwasa tare da ƙera su tare da daidaitattun daidaito, kuma fahimtar halayensu na asali zai ba da gudummawa mai mahimmanci ga haɓakawa da ingantaccen tsari.Delphi yana amfani da haɗe-haɗe na kwaikwayi da dabarun gwaji na musamman don bincika halayen kwararar waɗannan na'urori.

Kamar yadda yake tare da duk sababbin injector, Babban Injector Diesel wanda ke ƙarƙashin haɓakawa a Delphi ya kasance batun ayyukan kwaikwayo da yawa.Musamman sha'awa ga wannan takarda, shine binciken CFD na ayyukan kula da ruwa.

Cavitation mai gudana shine sanannen batun a cikin kayan allurar dizal;Kwarewar gwaji da ta gabata ta nuna cewa ƙirar masana'antar Reynolds-Averaged Navier-Stokes (RANS) ta kasa ba da ingantacciyar sakamako don haɓakar halayen cavitation.Saboda haka ban da aikin CFD, manyan sikelin sikelin (LSM) na sassa daban-daban na ayyukan sarrafa injin ruwa an ba su izini.Yin amfani da ƙirar ƙira na bawul ɗin sarrafawa da ƙorafi a ma'auni mai girma yana ba da damar haɓaka fahimtar aikin hydraulic [1] wanda ba shi da sauƙi a cimma tare da wasu dabaru.Ayyukan hydraulic yana da isasshe mai zaman kansa a duk ma'auni don zama mai amfani azaman kayan aikin haɓakawa [2].