Sekureva kwemishumo, Nissan yakagadzirira lightweight acoustic mhinduro yeiyo 2022 modhi.

Acoustic mainjiniya ane akasiyana ezvigadzirwa zvekusarudza kubva kudzikisa ruzha, vibration, uye hukasha (NVH) mumotokari. Nekudaro, sarudzo yavo kazhinji inounza quantifiable drawback-yakawedzera uremu. Munguva yekuvandudza, motokari itsva inogona kuwedzera nyore mapaundi zana kana kupfuura nekuda kwekushandiswa kwezvinomwisa, zvipingamupinyi zvinoratidzira uye zvinotora inzwi, zvakadai sepamusoro, furo rakaputirwa, uye girazi risinganzwi.

Munguva yekusimbisa pane huremu, vaongorori vezvishandiso vari kutarisira kune zvitsva zvitsva kuitira kuhwina muhondo yeNVH-huremu. Iwo anonzi mametamaterials anopa tarisiro huru nekuda kwemutengo wakaderera kana uchienzaniswa neyechinyakare NVH mhinduro.

Iyo metamaterial yepakati ndeye artificial macroscopic composite zvinhu ine matatu-dimensional huchi chimiro. Nekuda kwekudyidzana kwenzvimbo pakati pezvikamu zveyuniti, inogona kupa mashandiro akanaka mukudzvinyirira kana kutungamira mafungu asingadiwe.

Kubva 2008, Nissan yanga ichitsvaga zvakanyanya metamatadium. Pa2020 Consumer Electronics Show, Nissan yakaratidza iyi metamaterial kekutanga uye yakati ichashandisa chinhu ichi kuderedza NVH mumotokari itsva yemagetsi yeAriya 2022.

Susumu Miura, mainjiniya epamusoro weNissan, akataura kuti ruzha rwekuvharisa kweiyo metamaterial runogona kusvika zvakapetwa kana pane zvechinyakare mhinduro. Seyakareruka mesh chimiro chakaputirwa mufirimu repurasitiki, chinhu ichi chinogona kuderedza 500-1200Hz Broadband ruzha, kazhinji runobva kumugwagwa kana nzira yekufambisa. Vhidhiyo inoratidza kuti iyi metamaterial inogona kuderedza ruzha rwekumashure mucockpit kubva pa70dB kuenda pasi pe60dB. Iyo kambani inoti kana zvichienzaniswa nezviripo NVH kuderedza zvirongwa, mutengo wechinhu ichi wakaderera, kana kuenzana. Nissan haisati yazivisa mutengesi wayo wemetamaterials.

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