Torsional crankshaft ije na harmonics

Oge ọ bụla otu cylinder gbara ọkụ, a na-etinye ike nke combustion na akwụkwọ akụkọ mkpanaka crankshaft. Akwụkwọ akụkọ mkpara na-atụgharị n'ime mmegharị ahụ ruo n'ókè ụfọdụ n'okpuru ike a. Mmaji ndị na-emekọ ihe na-esi na mkpagharị torsional na-ebute na crankshaft. Nkwekọ ndị a bụ ọrụ nke ọtụtụ ihe gụnyere frequency kere site n'ezie combustion na eke frequencies nke ọla na-eme n'okpuru nrụgide nke combustion na mgbanwe. N'ime ụfọdụ injinia, mmegharị ahụ nke crankshaft na ọsọ ụfọdụ nwere ike imekọrịta ya na ịma jijiji nke kwekọrọ na ya, na-eme ka resonance. N'ọnọdụ ụfọdụ, resonance nwere ike imesi ike crankshaft ruo n'ókè nke mgbawa ma ọ bụ ọdịda zuru oke.