Ọrụ na mmetụta nke valvụ EGR

1. Gịnị bụ EGR valvụ

valvụ EGR bụ ngwaahịa arụnyere na igwe dizel iji chịkwaa oke ikuku gas na-emegharị azụ azụ na sistemụ oriri. Ọ na-adịkarị n'akụkụ aka nri nke ihe oriri na-eri nri, na nso trottle, na-ejikọta ya site na obere ọkpọkọ ígwè na-eduga na ikpochapụ.

valvụ EGR na-ebelata okpomọkụ nke ụlọ combustion site n'iduzi gas na-ekpocha ọkụ gaa n'ọtụtụ ihe oriri iji sonye na combustion, melite arụmọrụ nke engine, melite gburugburu ebe ọkụ, ma belata ibu nke engine, nke ọma belata mmepụta ya. nke NO ogige, belata ịkụ aka, ma gbasaa ndụ ọrụ nke akụkụ ọ bụla. Ụgbọ ala na-ekpochapụ gas bụ gas na-adịghị ere ọkụ nke na-adịghị etinye aka na combustion na ụlọ ọkụ. Ọ na-ebelata okpomọkụ ọkụ na nrụgide site na ịmịnye akụkụ nke okpomọkụ nke ọkụ na-emepụta iji belata ọnụọgụ nitrogen oxide.

2. Kedu ihe valvụ EGR na-eme

Ọrụ nke valvụ EGR bụ ịchịkwa ọnụ ọgụgụ nke ikuku gas na-abanye n'ime ebe a na-eri nri, nke mere na ụfọdụ gas na-ekpofu ihe na-abanye n'ime ihe oriri maka recirculation.

Mgbe engine na-agba ọsọ n'okpuru ibu, EGR valvụ meghere, n'oge, kwesịrị ekwesị na akụkụ nke iyuzucha gas ọzọ n'ime cylinder, n'ihi na isi akụkụ nke iyuzucha gas CO2 karịa okpomọkụ ike bụ ibu, ya mere iyuzucha gas nwere ike ịbụ akụkụ nke okpomọkụ eme. site na combustion na wepụ si cylinder, na ngwakọta, si otú ibelata engine combustion okpomọkụ na oxygen ọdịnaya, si otú ibelata ego nke NOx ogige.

3.Mmetụta nke EGR valve kaadị lag

 Ụkpụrụ nzipụta VIengine na-esetịpụ ihe mmetụta ọnọdụ ma ọ bụ ihe mmetụta okpomọkụ ikuku gas ma ọ bụ ihe mmetụta nrụgide na valvụ EGR iji duzie mgbazi mechiri emechi na njikwa nzaghachi maka ọnụọgụ ikuku gas n'ezie. Dị ka ọnọdụ ọrụ n'ezie nke engine na mgbanwe nke ọnọdụ ọrụ, ọ nwere ike na-akpaghị aka gbanwee ọnụ ọgụgụ nke iyuzucha gas na-etinye aka na recycling.

Ọ bụrụ na valvụ EGR mechiri, oke gas na-ekpochapụ n'ime ebe a na-eri ihe agaghị enwe ike ịchịkwa ya.

Ntugharị gas na-ekpochasị oke ga-emetụta ọrụ nkịtị nke engine ahụ, na-enwe mmetụta dị ukwuu na arụ ọrụ nke engine, na-emetụta ike nke engine, na-eduga na enweghị ike engine. Obere gas n'efu na mgbasa ga-emetụta okpomọkụ nke ụlọ combustion engine, na-abawanye mmepụta nke NO ogige, n'ihi na emissions na-adịghị ruo ọkọlọtọ, n'ihi na engine ịgba torsion.