某車型整車NVH性能開(kāi)發(fā)策略目錄/Contents一二三四整車NVH性能定位整車NVH性能開(kāi)發(fā)目標(biāo)整車及子系統(tǒng)NVH性能開(kāi)發(fā)策略開(kāi)發(fā)風(fēng)險(xiǎn)及建議一整車NVH性能定位XX車型是一款定位于高品質(zhì)微型智能電動(dòng)汽車，專門針對(duì)城市短途出行或共享出行市場(chǎng)需求，同時(shí)兼顧歐洲市場(chǎng)。車身總長(zhǎng)3166mm，總寬1680mm，總高1680mm，軸距2000mm，續(xù)航300km以上(NEDC工況)。XX車型整車NVH性能策略為A，競(jìng)品主流車型前三的水平。XX車型C-ECAP五星要求，NVH得分系數(shù)需要達(dá)到0.8。一、整車NVH性能定位項(xiàng)目概況及NVH性能定位二整車NVH性能開(kāi)發(fā)目標(biāo)二、整車NVH性能開(kāi)發(fā)目標(biāo)整車NVH性能VTS開(kāi)發(fā)目標(biāo)項(xiàng)目XX車型目標(biāo)豐田EQ性能標(biāo)桿車競(jìng)品車1競(jìng)品車2總分7.25TBDTBDTBDTBD上車7.25TBDTBDTBDTBD起步、蠕動(dòng)、低速7.25TBDTBDTBDTBD長(zhǎng)直線基本性能道7.25TBDTBDTBDTBDNVH舒適道7.25TBDTBDTBDTBDNVH異響道7.5TBDTBDTBDTBD2.1主觀評(píng)價(jià)2.2通過(guò)噪聲（國(guó)標(biāo)要求）項(xiàng)目XX車型目標(biāo)豐田EQ性能標(biāo)桿車競(jìng)品車1競(jìng)品車2通過(guò)噪聲dB(A)≤72TBDTBDTBDTBD說(shuō)明目前法規(guī)要求是≤74，新法規(guī)還未發(fā)布，根據(jù)討論稿2020年后是≤72二、整車NVH性能開(kāi)發(fā)目標(biāo)整車NVH性能VTS開(kāi)發(fā)目標(biāo)2.3行駛工況測(cè)試場(chǎng)地測(cè)點(diǎn)工況XX車型目標(biāo)豐田EQ性能標(biāo)桿車競(jìng)品車1競(jìng)品車2道路試驗(yàn)場(chǎng)光滑瀝青路DRED^WOT20-120kphdBA53-68TBDTBDTBDTBDRRLD^WOT20-120kphdBA54-69TBDTBDTBDTBDDRE60km/hdBA≤56TBDTBDTBDTBD80km/hdBA≤60TBDTBDTBDTBD100km/hdBA≤64TBDTBDTBDTBD120km/hdBA≤66TBDTBDTBDTBDRRL60km/hdBA≤58TBDTBDTBDTBD80km/hdBA≤61TBDTBDTBDTBD100km/hdBA≤65TBDTBDTBDTBD120km/hdBA≤68TBDTBDTBDTBDDRED^WOT20-120kphopenAI%125-75TBDTBDTBDTBDRRLD^WOT20-120kphopenAI%120-70TBDTBDTBDTBDDRE60km/hopenAI%≥105TBDTBDTBDTBD80km/hopenAI%≥100TBDTBDTBDTBD100km/hopenAI%≥88TBDTBDTBDTBD120km/hopenAI%≥71TBDTBDTBDTBDRRL60km/hopenAI%≥100TBDTBDTBDTBD80km/hopenAI%≥95TBDTBDTBDTBD100km/hopenAI%≥83TBDTBDTBDTBD120km/hopenAI%≥67TBDTBDTBDTBD二、整車NVH性能開(kāi)發(fā)目標(biāo)整車NVH性能VTS開(kāi)發(fā)目標(biāo)2.3行駛工況測(cè)試場(chǎng)地測(cè)點(diǎn)工況XX車型目標(biāo)豐田EQ性能標(biāo)桿車競(jìng)品車1競(jìng)品車2道路試驗(yàn)場(chǎng)粗糙路面DRE60km/hdBA≤64TBDTBDTBDTBD60km/hAI%≥89TBDTBDTBDTBDRRL60km/hdBA≤65TBDTBDTBDTBD60km/hAI%≥87TBDTBDTBDTBD2.4空調(diào)開(kāi)啟測(cè)試場(chǎng)地測(cè)點(diǎn)工況XX車型目標(biāo)豐田EQ性能標(biāo)桿車競(jìng)品車1競(jìng)品車2半消聲室DREACondBA≤38TBDTBDTBDTBDRRLACondBA≤38TBDTBDTBDTBDSteeringwheelAconmm/s≤0.01TBDTBDTBDTBDSeatrailAconmm/s≤0.01TBDTBDTBDTBD2.5氣密性項(xiàng)目XX車型目標(biāo)豐田EQ性能標(biāo)桿車競(jìng)品車1競(jìng)品車2Bodyleakage≤40CFMTBDTBDTBDTBDWholevehicleleakage≤110CFMTBDTBDTBDTBD三整車及子系統(tǒng)NVH性能開(kāi)發(fā)策略3.1、整車NVH性能開(kāi)發(fā)策略三、整車及子系統(tǒng)NVH性能開(kāi)發(fā)策略C-ECAP五星要求XX車型整車NVH性能策略為A，競(jìng)品主流車型前三的水平。XX車型C-ECAP五星要求，NVH得分系數(shù)需要達(dá)到0.8。開(kāi)發(fā)策略：整車NVH水平要求較好，各子系統(tǒng)性能要均衡，不能有明細(xì)短板，重點(diǎn)關(guān)注電驅(qū)動(dòng)系統(tǒng)、路噪、風(fēng)噪和異響開(kāi)發(fā)，聲學(xué)包和密封是基礎(chǔ)，需要保證。NVH性能不做過(guò)設(shè)計(jì)，考慮經(jīng)濟(jì)性。如有設(shè)備和人員，整車NVH性能可自主調(diào)校，否則建議外委調(diào)校。需要項(xiàng)目組輸入性能標(biāo)桿車以及競(jìng)品車。需要項(xiàng)目組提供性能標(biāo)桿車和競(jìng)品車測(cè)試資源。需要項(xiàng)目組支持購(gòu)買測(cè)試設(shè)備和招聘NVH性能開(kāi)發(fā)工程師。需求三、整車及子系統(tǒng)NVH性能開(kāi)發(fā)策略3.2、電驅(qū)動(dòng)系統(tǒng)NVH性能開(kāi)發(fā)策略電驅(qū)動(dòng)系統(tǒng)NVH為純電動(dòng)車型開(kāi)發(fā)難點(diǎn)，NVH專業(yè)工程師短缺，積累經(jīng)驗(yàn)較少。開(kāi)發(fā)策略：電驅(qū)動(dòng)系統(tǒng)NVH水平要求較高，對(duì)車內(nèi)振動(dòng)噪聲貢獻(xiàn)控制要好，同時(shí)對(duì)車外噪聲貢獻(xiàn)也要控制較好，不允許有明顯的沖擊和抖動(dòng)，不允許有明顯的嘯叫。XX車型項(xiàng)目建議委外開(kāi)發(fā)，積累NVH領(lǐng)域電驅(qū)動(dòng)系統(tǒng)正向開(kāi)發(fā)經(jīng)驗(yàn)。兼顧動(dòng)力性和經(jīng)濟(jì)性。需求需要項(xiàng)目組輸入電驅(qū)動(dòng)系統(tǒng)技術(shù)方案和電驅(qū)動(dòng)系統(tǒng)設(shè)計(jì)參數(shù)要求。需要項(xiàng)目組招聘經(jīng)驗(yàn)豐富的電驅(qū)動(dòng)系統(tǒng)NVH工程師。電機(jī)、減速器、MCU三合一3.3、懸置及底盤系統(tǒng)NVH性能開(kāi)發(fā)策略三、整車及子系統(tǒng)NVH性能開(kāi)發(fā)策略系統(tǒng)XX車型EQ車性能標(biāo)桿車競(jìng)品車1競(jìng)品車2懸置TBD三點(diǎn)橫擺懸置，設(shè)計(jì)參數(shù)未知TBDTBDTBD前懸架TBD麥弗遜獨(dú)立懸架，設(shè)計(jì)參數(shù)未知TBDTBDTBD后懸架TBD后扭梁懸架，設(shè)計(jì)參數(shù)未知TBDTBDTBD副車架TBD剛性連接，設(shè)計(jì)參數(shù)未知TBDTBDTBD轉(zhuǎn)向系統(tǒng)TBDTBDTBDTBDTBD輪胎TBD175/65R15輪胎類型噪聲水平未知TBDTBDTBDXX車型懸置不會(huì)采用原車三點(diǎn)橫擺結(jié)構(gòu)，具體方案未確定，底盤基本參照EQ原車設(shè)計(jì)，會(huì)有局部調(diào)整。開(kāi)發(fā)策略：動(dòng)總的沖擊和整車抖動(dòng)是難點(diǎn)，路噪較傳統(tǒng)車會(huì)更突出，XX車型項(xiàng)目根據(jù)EQ原車懸置和底盤NVH水平，針對(duì)弱點(diǎn)做提升，重點(diǎn)考慮輪胎選型襯套動(dòng)靜剛度參數(shù)匹配，建議懸置供應(yīng)商負(fù)責(zé)懸置調(diào)校開(kāi)發(fā)，底盤NVH性能委外開(kāi)發(fā)，兼顧操穩(wěn)性和經(jīng)濟(jì)性。需求需要項(xiàng)目組輸入懸置底盤系統(tǒng)技術(shù)方案。需要項(xiàng)目組招聘經(jīng)驗(yàn)豐富的懸置和底盤系統(tǒng)NVH工程師。3.4、車身系統(tǒng)NVH性能開(kāi)發(fā)策略三、整車及子系統(tǒng)NVH性能開(kāi)發(fā)策略XX車型車身基本參照EQ車型，局部會(huì)有調(diào)整，采用鋼制車身。開(kāi)發(fā)策略：車身NVH性能指標(biāo)基本參考EQ車型，重點(diǎn)考慮異響，對(duì)較弱區(qū)域進(jìn)行加強(qiáng)，氣密性和聲密性加強(qiáng)，即涂膠、空腔阻隔、貼片和堵蓋按加強(qiáng)設(shè)計(jì)。同時(shí)考慮經(jīng)濟(jì)性。需求需要項(xiàng)目組輸入車身材料、車身結(jié)構(gòu)形式及EQ車身NVH性能參數(shù)。3.5、開(kāi)閉件及附件系統(tǒng)NVH性能開(kāi)發(fā)策略三、整車及子系統(tǒng)NVH性能開(kāi)發(fā)策略系統(tǒng)XX車型EQ車性能標(biāo)桿車競(jìng)品車1競(jìng)品車2開(kāi)閉件車門和背門鋼制材料，前機(jī)罩正在評(píng)估是塑料還是鋼制鋼制材料，模態(tài)剛度等參數(shù)未知TBDTBDTBD密封條TBD兩道半密封，門框密封條壓縮量3.5mm，車門密封條壓縮量6.5mm。TBDTBDTBD水切TBD附件正在整理TBDTBDTBD呢嘈TBD附件正在整理TBDTBDTBDXX車型車門尺寸基本沿用原車，后背門和前機(jī)罩根據(jù)造型來(lái)確定。開(kāi)發(fā)策略：風(fēng)噪較傳統(tǒng)車更突出，密封要求更高，重點(diǎn)考慮動(dòng)態(tài)密封。開(kāi)閉件：根據(jù)EQ原車模態(tài)剛度來(lái)評(píng)估XX車型的要求。附件：根據(jù)EQ原車密封和風(fēng)噪性能水平，針對(duì)弱點(diǎn)做提升，密封要求至少兩道半密封，壓縮量要考慮動(dòng)態(tài)密封，兼顧經(jīng)濟(jì)性。需要項(xiàng)目組輸入開(kāi)閉件及附件技術(shù)方案。需要項(xiàng)目組招聘經(jīng)驗(yàn)豐富的風(fēng)噪NVH工程師。需求3.6、內(nèi)外飾系統(tǒng)NVH性能開(kāi)發(fā)策略三、整車及子系統(tǒng)NVH性能開(kāi)發(fā)策略系統(tǒng)XX車型EQ車性能標(biāo)桿車競(jìng)品車1競(jìng)品車2聲學(xué)材料TBDTBDTBDTBDTBD儀表結(jié)構(gòu)TBDTBDTBDTBDTBD座椅TBDTBDTBDTBDTBD內(nèi)外飾裝飾件安裝卡扣密封TBDTBDTBDTBDTBDXX車型內(nèi)外飾全新開(kāi)發(fā)，C-ECAP五星，PQ競(jìng)爭(zhēng)策略為L(zhǎng)。開(kāi)發(fā)策略：純電動(dòng)高頻噪聲更突出，車內(nèi)聲學(xué)環(huán)境要求更好，吸聲性能要重點(diǎn)考慮，XX車型項(xiàng)目根據(jù)EQ原車隔吸聲性能水平，僅針對(duì)弱點(diǎn)做提升，重點(diǎn)考慮異響NVH性能，聲包和異響建議委外開(kāi)發(fā)，兼顧氣味、VOC和經(jīng)濟(jì)性。需要項(xiàng)目組輸入內(nèi)外飾技術(shù)方案。需要項(xiàng)目組招聘經(jīng)驗(yàn)豐富的聲學(xué)包和異響NVH工程師。需求3.7、空調(diào)及電子電器系統(tǒng)NVH性能開(kāi)發(fā)策略三、整車及子系統(tǒng)NVH性能開(kāi)發(fā)策略系統(tǒng)XX車型EQ車性能標(biāo)桿車競(jìng)品車1競(jìng)品車2空調(diào)系統(tǒng)初步考慮沿用EQ，會(huì)有部分調(diào)整基本尺寸，有臺(tái)架噪聲值TBDTBDTBD空調(diào)壓縮機(jī)初步計(jì)劃借用T1TBDTBDTBDTBD空調(diào)風(fēng)扇初步考慮沿用EQ，會(huì)有部分調(diào)整TBDTBDTBDTBD水泵初步計(jì)劃借用T1TBDTBDTBDTBD冷卻風(fēng)扇初步計(jì)劃借用T1TBDTBDTBDTBDEPS初步采用管柱式電動(dòng)轉(zhuǎn)向，c-epsTBDTBDTBDTBD線束安裝卡扣密封TBDTBDTBDTBDTBDXX車型空調(diào)和電子電器在滿足基本功能要求的基礎(chǔ)上，重點(diǎn)考慮NVH性能。開(kāi)發(fā)策略：空調(diào)和電子電器振動(dòng)噪聲在純電動(dòng)車上會(huì)更加突出，XX車型項(xiàng)目根據(jù)EQ原車空調(diào)及電子電器NVH性能水平，僅針對(duì)弱點(diǎn)做提升，車內(nèi)聲品質(zhì)要好，單體噪聲要求供應(yīng)商控制，兼顧經(jīng)濟(jì)性。需要項(xiàng)目組輸入空調(diào)及電子電器的技術(shù)方案。需要項(xiàng)目組招聘經(jīng)驗(yàn)豐富的空調(diào)及電子電器NVH工程師。需求四開(kāi)發(fā)風(fēng)險(xiǎn)及建議四、開(kāi)發(fā)風(fēng)險(xiǎn)及建議開(kāi)發(fā)風(fēng)險(xiǎn)：VTS目標(biāo)按C-ECAP五星制定，A0級(jí)車型目前沒(méi)有可以達(dá)到C-ECAP五星要求，最高車速幾乎都在100kph左右，無(wú)