Wahi a nā hōʻike, ua hoʻomākaukau ʻo Nissan i kahi hopena acoustic māmā no kāna kumu hoʻohālike 2022.

Loaʻa i nā ʻenekini acoustic nā ʻano mea like ʻole e koho ai e hōʻemi i ka walaʻau, ka haʻalulu, a me ka paʻakikī (NVH) i nā kaʻa. Eia naʻe, lawe pinepine kā lākou koho i kahi helu drawback-hoʻonui i ke kaumaha. I ka wā o ka hoʻomohala ʻana, hiki i kahi kaʻa hou ke hoʻohui maʻalahi i 100 paona a ʻoi aku paha ma muli o ka hoʻohana ʻana i nā mea hoʻoheheʻe haʻalulu, nā pale hoʻomanaʻo a me ke kani ʻana, e like me ka uhi ʻana, infused foam, a me ke aniani pale kani.

I ke au o ka hoʻoikaika ʻana i ka māmā, ke kakali nei nā mea noiʻi waiwai i nā hanana hou i mea e lanakila ai i ke kaua NVH-kaumaha. Hāʻawi nā mea i kapa ʻia nā metamaterial i nā manaʻo maikaʻi loa ma muli o ko lākou kumukūʻai haʻahaʻa i hoʻohālikelike ʻia me nā hoʻonā NVH kuʻuna.

ʻO ka metamaterial medium kahi mea hana macroscopic composite me kahi ʻano honeycomb ʻekolu. Ma muli o ka pilina kūloko ma waena o nā ʻāpana ʻāpana, hiki iā ia ke hāʻawi i ka hana maikaʻi loa i ke kāohi ʻana a i ʻole ka hoʻihoʻi ʻana i nā nalu kani makemake ʻole.

Mai ka makahiki 2008, ua noiʻi nui ʻo Nissan i nā metamaterial. I ka 2020 Consumer Electronics Show, ua hōʻike ʻo Nissan i kēia metamaterial no ka manawa mua a ʻōlelo ʻo ia e hoʻohana i kēia mea e hōʻemi i ka NVH i ka kaʻa uila 2022 Ariya hou.

Ua ʻōlelo ʻo Susumu Miura, ka mea ʻenekinia waiwai nui o Nissan, hiki i ka hopena insulation leo o kēia metamaterial ke hiki i ʻehā mau manawa ma mua o nā hoʻonā kuʻuna. Ma ke ʻano he ʻano mesh maʻalahi i kāʻei ʻia i kahi kiʻiʻoniʻoni plastik, hiki i kēia mea ke hōʻemi i ka leo broadband 500-1200Hz, ka mea maʻamau mai ke alanui a i ʻole ka ʻōnaehana hoʻouna. Hōʻike ka wikiō e hiki i kēia metamaterial ke hoʻemi i ka walaʻau hope i loko o ka cockpit mai 70dB i lalo o 60dB. Ua ʻōlelo ka ʻoihana i ka hoʻohālikelike ʻia me nā papahana mitigation NVH i kēia manawa, ʻoi aku ka haʻahaʻa o ke kumukūʻai o kēia mea, a i ʻole ka liʻiliʻi loa. ʻAʻole i hōʻike ʻo Nissan i kāna mea hoʻolako metamaterial.

Paʻi hou ʻia i ke kaiāulu Gasgoo