Raws li cov lus ceeb toom, Nissan tau npaj ib lub teeb acoustic tov rau nws cov qauv 2022.

Acoustic engineers muaj ntau yam khoom siv los xaiv los txo cov suab nrov, kev co, thiab hnyav (NVH) hauv tsheb. Txawm li cas los xij, lawv cov kev xaiv feem ntau ua rau muaj qhov tsis txaus ntseeg - nce qhov hnyav. Thaum lub sij hawm txoj kev loj hlob, lub tsheb tshiab tuaj yeem yooj yim ntxiv 100 phaus lossis ntau dua vim tias siv cov khoom poob siab, kev cuam tshuam thiab lub suab-absorbing, xws li overlays, infused foam, thiab soundproof iav.

Nyob rau hauv lub caij nyoog ntawm qhov tseem ceeb ntawm lub teeb yuag, cov ntaub ntawv tshawb fawb tab tom nrhiav rau pem hauv ntej rau kev txhim kho tshiab txhawm rau kom yeej NVH-qhov hnyav sib ntaus sib tua. Lub npe hu ua metamaterials muab kev cia siab zoo vim tias lawv cov nqi qis dua piv nrog cov kev daws teeb meem NVH.

Qhov nruab nrab metamaterial yog ib qho khoom siv macroscopic composite nrog peb-dimensional honeycomb qauv. Vim yog kev sib cuam tshuam hauv zos ntawm cov khoom siv hauv tsev, nws tuaj yeem muab kev ua tau zoo hauv kev tawm tsam lossis hloov pauv cov suab tsis xav tau.

Txij li thaum xyoo 2008, Nissan tau tshawb fawb ntau yam metamaterials. Ntawm 2020 Consumer Electronics Show, Nissan tau nthuav tawm cov khoom siv hluav taws xob no thawj zaug thiab hais tias nws yuav siv cov khoom siv no los txo NVH hauv 2022 Ariya tshiab electric tsheb.

Susumu Miura, Nissan tus kws tshaj lij cov ntaub ntawv loj, tau hais tias lub suab rwb thaiv tsev ntawm cov khoom siv no tuaj yeem ncav cuag plaub npaug ntawm cov kev daws teeb meem ib txwm muaj. Raws li cov qauv mesh yooj yim qhwv hauv cov yas zaj duab xis, cov khoom siv no tuaj yeem txo 500-1200Hz broadband suab nrov, uas feem ntau yog los ntawm txoj kev lossis kev sib kis. Cov yeeb yaj kiab qhia tau hais tias cov khoom siv no tuaj yeem txo cov suab nrov tom qab hauv lub cockpit ntawm 70dB mus rau tsawg dua 60dB. Lub tuam txhab thov tias piv nrog cov kev pab cuam txo qis NVH uas twb muaj lawm, tus nqi ntawm cov khoom no yog qis dua, lossis tsawg kawg yog sib npaug. Nissan tseem tsis tau tshaj tawm nws cov khoom siv metamaterials.

Reprinted rau Gasgoo zej zog