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國四排放農機產品100問-法規篇

2022-12-20 16:13:48 來源:農機企業家峰會 閱讀量:17613 評論

  【農機網 熱點關注】為積極回應社會和廣大用戶的關切,更好地推進農機國四排放法規的實施,中國農機企業家峰會組織編寫了《國四排放農機產品100問》手冊,意在普及國四排放農機產品的法規和知識,對排放升級中大家關心的問題答疑解惑,便于農機生產企業、農機經銷商、農機使用者以及基層農機管理人員進一步了解和認識國四農機產品,更好地開展相關工作。
 
  一、法規篇
 
  1、國四(非道路柴油移動機械中國第四階段排放控制)農機產品(簡稱國四產品)目前執行的排放標準是什么?
 
  答:目前執行的排放標準為GB 20891-2014《非道路移動機械用柴油機排氣污染物排放限值及測量方法(中國第三、四階段)》及其修改單、HJ 1014-2020《非道路柴油移動機械污染物排放控制技術要求》以及GB 36886-2018《非道路移動柴油機械排氣煙度限值及測量方法》。
 
  2、“國四”排放標準覆蓋哪些產品?
 
  答:覆蓋產品:在中國境內生產、進口、銷售的非道路移動機械及其裝用的柴油機;在道路上用于載人(貨)的車輛裝用的第二臺柴油機(比如大型起重機的上裝柴油機)。
 
  本標準適用于以下(包括但不限于)機械:工程機械、農業機械(包括拖拉機、聯合收割機等)、林業機械、機場地勤設備、材料裝卸機械、雪犁裝備、工業鉆探設備、空氣壓縮機、發電機組、漁業機械(增氧機、池塘挖掘機等)、水泵、三輪汽車及其裝用的柴油機、額定凈功率小于37kW的船舶及其裝用的柴油機。
 
  3、農機產品國四標準實施時間和范圍是什么?
 
  答:GB 20891-2014修改單及《非道路柴油移動機械污染物排放控制技術要求》(HJ 1014-2020)2020年12月28日由生態環境部發布并實施,標準明確:自2022年12月1日起,所有生產、進口和銷售的560kW以下(含560kW)非道路移動機械及其裝用的柴油機應符合國標第四階段以及HJ 1014-2020標準要求。560kW以上非道路移動機械及其裝用的柴油機第四階段實施時間另行公告。
 
  4、農機產品排放標準為什么要從國三升級到國四?
 
  答:農機產品排放標準從國三升級到國四,主要有以下好處:
 
  (1)改善空氣質量,有利于社會公眾生活和身體健康
 
  我國 PM2.5濃度居高不下,嚴重影響了社會公眾生活和身體健康。包括農機在內的非道路移動機械污染排放是影響大氣環境質量的重要因素,其NOx和PM排放量占整個移動源排放的30%和55.4%。NOx和PM(氮氧化物和顆粒物)會嚴重危害人體健康,影響動植物生長。隨著標準的實施,國四農機和工程機械保有量占比逐步增加,預計4年后當年減排比例分別為17.6%和25.5%,9年后年當年減排比例分別為34.2%和50.4%,空氣質量將得到明顯改善。國四非道路移動機械采用顆粒物捕集器(DPF),減少99%以上的顆粒物排放,可望徹底解決農機冒黑煙問題。
 
  (2)提高農機技術水平,有利于為用戶提供優質節能環保的農機產品
 
  農機國三升級國四,會使得柴油機和整機的技術水平進一步提高,逐步縮小我國農機用柴油機排放控制體系與歐美的差距。同時,國四標準的實施會引導行業調整產業結構,對產品進行升級換代,使得產品結構更加合理,推動整個行業技術進步。產品的升級換代,會為農業生產帶來優質、節能環保的農機產品,助力農民增收、促進農村產業發展和鄉村振興。
 
  5、關于法規實施的時間點,對于進口設備,以報關時間、貨物進口證明書抵運日期、入境前完成信息公開、開票時間還是其它時間為準?
 
  答:進口設備以報關時間為準,同時開票須在2022年12月1日前完成。
 
  6、大于560kW的發動機及農業機械如何處理?執行國三階段標準?也可申報國四階段?
 
  答:560kW以上的柴油機及機械可以繼續生產、銷售和進口國三產品。如果能夠滿足第國四階段的相關要求,也可申報國四。
 
  7、國四階段具體的排放限值規定是怎樣的?
 
  答:國四排放限值如下表
 
  非道路移動機械用柴油機排氣污染物排放限值

 
  8、國四農機法規實施的技術措施有哪些?
 
  答:國四農機37kW以上產品的排放控制需要安裝后處理來實現達標排放。采用的主流技術路線有:EGR+DOC+DPF技術路線和DOC+DPF+SCR技術路線。為有效監控后處理系統是否正常工作,引入NOx控制/診斷(NCD)和PM控制/診斷(PCD)以及診斷通訊和精準定位。為保證產品持續達標,根據功率段的不同需要采用PEMS和煙度測試的方法進行新生產和在用機械的達標檢查。為加強對農業機械管理,要求37kW以上農機加裝精準定位系統。
 
  9、國四農機產品是否需要安裝精準定位系統?精準定位系統壽命要求
 
  答:裝用額定凈功率 37 kW及以上柴油機的機械 ,出廠前應加裝精準定位系統。機械生產企業應確保精準定位系統在機械全壽命期內應正常工作。
 
  10、精準定位系統的技術要求?
 
  答:精度要求應滿足:
 
  (1)水平定位精度為小于10 m;
 
  (2)定位時間:
 
  ①冷啟動:從系統加電運行到實現捕獲時間不應超過120s;
 
  ②熱啟動:實現捕獲時間應小于10s。
 
  (3)柴油機啟動后60s內必須開始傳輸位置,傳輸頻率是10min一次;
 
  (4)柴油機停機后不需要傳輸定位信息。
 
  11、排放控制診斷系統和排放控制系統可以擅自更改嗎?
 
  答:無論企業或個人均不能擅自更改。機械生產企業有責任防止國四產品的排放控制診斷系統和排放控制單元被篡改,國四產品上應具有防止篡改的功能。如果被篡改,機械生產企業應查明原因向生態環境主管部門說明,給出防篡改可行技術解決方案,并在新生產的國四產品上采取相應補救措。
 
  12、機械生產企業應保證排放相關零部件在機械有效壽命期內的正常功能,有效壽命如何界定?
 
  答:機械有效壽命是與機械裝用的柴油機有效壽命完全一致的時間周期,而柴油機的有效壽命是指保證非道路移動機械用柴油機及其排放控制系統的正常運轉并符合有關氣態污染物和顆粒物排放限值,且已在型式核準時給予確認的使用時間。應保證柴油機的排放控制裝置在下表規定的有效壽命期內正常運轉,且污染物排放符合標準規定的限值要求。
 
  耐久性時間要求
 

 

  13、標準中提出了“排放質保期”、“機械有效壽命”和“機械全壽命周期”等概念,在相應時間周期內出現排放超標后的相關責任如何區分?
 
  答:“排放質保期”指的是該時間內,排放相關零部件非用戶責任損壞或者劣化,導致排放超標,生產企業要免費進行更換。生產企業應對排放相關零部件的排放質保期做出自我承諾,且不應短于HJ 1014-2020標準中的“環保關鍵零部件排放質保期要求”。信息公開時,應公開排放相關零部件名單及其相應的質保期,并將以上信息在產品說明書中進行說明。
 
  環保關鍵零部件排放質保期要求
 

 

  “機械有效壽命”指的是該時間內,排放必須要達標,如果不達標,整機生產企業應進行維修、維護使得排放達標。
 
  “機械全壽命周期”指的機械從生產出來到報廢的全生命周期。標準要求全壽命期排放控制策略要起作用,同時要求精準定位系統和遠程監控終端都要在全壽命周期起作用,整機企業對此負責。
 
  14、農機企業在國四產品開發、生產和銷售過程中要做哪些確認?
 
  答:(1)新機開發生產時進行環保信息公開,定位信息聯調確認;(2)新機出廠按照規定進行煙度確認;(3)在出廠后500小時內對新生產的機械按系族進行排放達標自查,并將 自查計劃和自查結果進行信息公開;(4)生產企業應制定在用符合性自查計劃,對上市18個月內的產品開展在用符合性自查并將自查報告進行信息公開。
 
  15、國四產品怎么進入國家補貼目錄?
 
  答:國四農機要進入國家補貼目錄首先需要企業做好三點:一是企業在信息公開后獲得唯一的機械環保代碼;二是符合條件的國三產品通過信息變更,經原鑒定機構確認;三是新產品取得國四農機推廣鑒定證書。
 
  2022年6月4日,農業部農業機械化總站發布了《關于做好柴油機排放標準升級農業機械試驗鑒定獲證產品信息變更等相關工作的通知》,其中明確表示獲證產品鑒定信息的確認、變更采取“企業自主變更”的方式。
 
  目前,企業可自主進行變更的為所有升級國四排放標準的農機鑒定獲證產品。其中滿足相關結構和特征參數變化要求的農用柴油機、輪式和履帶拖拉機、手扶拖拉機這3種產品亦可自主變更,其他產品參數變化應符合鑒定大綱的變更要求。如果不滿足變更要求的產品,只能通過重新申請鑒定獲取證書。
 
  16、“國四”排放標準實施后,主機制造商是否還能生產和銷售“國三”新機?如何進行豁免備案?
 
  答:2022年12月1日以后,中國境內既不允許生產,也不允許銷售“國三”新機;發動機制造商生產560kW以下(含560kW)“國三”發動機,需要進行備案后方可生產;如果用于出口,需要向生態環境部機動車排污監控中心(以下簡稱:VECC)備案豁免;主機制造商生產“國三”主機,需要進行備案后方可生產,如果用于出口,需要向VECC備案豁免;同樣,主機制造商進口560kW以下(含560kW)“國三”發動機,也需要向VECC備案豁免。
 
  目前標準豁免條件包括出口、展覽、應急、救援、匹配試驗和替換在用發動機。企業可通過信息公開系統“豁免欄”備案,具體備案流程和操作指南可參見豁免欄中提的供模板。
 
  17、對于排放異常情況如何界定是由用戶加注不合規燃油和車用尿素(反應劑)導致的,誰來界定?
 
  答:誰主張誰舉證。
 
  18、油液監管中,由于潤滑油(機油)的質量也會對排放質保期產生影響,對于機油的監管有沒有相關考慮?
 
  答:暫未涉及機油的要求,生產企業應在產品說明書里明確規定柴油機對機油的要求。如果因為客戶使用不合規的機油造成排放超標,企業提供證明后,排放超標與企業無關。
 
  19、2022年12月1日后,企業不得再銷售國三農機,屆時國三的庫存怎么辦?
 
  答:企業可以將國三農機出口至排放要求與我國國三相同或低于國三排放要求的國家。
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