亞歷山大丹尼士Enviro400 Alexander Dennis Enviro400

編號 Class:7000 - 7059

二零零九年,亞歷山大丹尼士向香港提供兩架長十點五米的兩軸雙層空調巴士─Enviro400,成為第三款於香港出現的Enviro家族成員。亞歷山大丹尼士Enviro400是繼早年九巴的利蘭勝利二型(G544),丹尼士喝采(N364)及城巴的兩軸利蘭奧林比安(7)之後,再一次出現於香港的兩軸雙層空調巴士。

本港巴士公司自八十年代初出現三軸雙層巴士開始,便確立了購買三軸雙層巴士的方向,以取其能提供高載客量,去滿足營運需要,只有除了特殊環境(例如九巴最後八架都城嘉慕都城型)及從英國引進的二手巴士是例外,及後發展出空調巴士,在雙層空調巴士,不論任何長度,為著應付加設空調機之後的額外負重,以及減少對路面的損壞,新巴士必定是三軸設計,更加限制了巴士公司引進全新兩軸雙層巴士來港。

在二零零八年,因應本港巴士業經營環境有變,巴士公司開始尋求減輕營運成本方法,當中其中一個就是研究引入兩軸雙層空調巴士之可行性,有關計劃終於在一年後得到實現,亞歷山大丹尼士從其Enviro系列中選出Enviro400,並加以改良,以迎合加裝空調設備及應付本港營運環境需要。在引進Enviro400時,除了是首款兩軸雙層空調超低地台巴士,更是第二款配置歐五排放標準引擎的雙層巴士。

首兩架供香港巴士公司試用的Enviro400二零零九年十一月二十二日抵港,城巴隨於二零零九年十二月八日接收其中一架,並於隨後二十二日安排驗車,城巴的Enviro400新車對比九巴的一架,外觀上有著些少差異,主要是車頭仍然保留樹檔,電子牌箱雖然同是由Hanover供應,但是城巴標準的橙色LED牌箱,空調系統則是日本電裝出品。動力來源是康明斯ISLe歐五引擎,配以ZF "Ecolife"波箱,透過SCR (Selective Catalytic Reduction)技術,令廢氣排放達至歐五標準。另外,車廂照明全數採用LED照明系統,而7000更是首架城巴下層逃生出口採用全新的全玻璃太平門。

城巴的Enviro400於二零一零年二月一日出牌,隨於二月八日派往行走跑馬地及深水步的117路線,以作測試,而由二零一零年三月二十二日開始,7000被安排行走往返中環及赤柱的260路線。城巴第二架Enviro400於二零一零年六月十四日抵港,而這架新車是於7000完成測試之後,作出必要調校工作後再運往本港,新車於二零一零年七月二日出牌,並於同月二十二日投入服務。

隨著試驗效果滿意,城巴於二零一零年十一月增購三十八架Enviro400,用作替換車隊中的利蘭奧林比安及首批丹尼士巨龍十點三米。新車將如之前訂購的Enviro500一樣,底盤於英國組裝完成,再運往中國國內裝配車身,不同的是城巴在之前是委託深圳五洲龍組裝車身,這批Enviro400則是由珠海廣通客車廠組裝,而廣通客車廠一直替九巴及龍運組裝Enviro500新車。跟樣板車不同,量產型Enviro400下層逃生出口改回使用傳統太平門,而車內座椅亦轉用了早在Enviro200使用的Lazzerni Pratico款式,同時總載客量由樣板車八十八人提升至九十人。Enviro400下層亦增設一塊垂直LCD顯示屏,為乘客提供報站及路線資訊,是城巴車隊中首款設置有關裝置的車型。

首架量產Enviro400於二零一一年八月初到港,隨著完成各種測試及出牌程序,這批新車陸續於八月底投入服務,行走南區72,72A及75,海洋公園路線629,當然不少得赤柱路線6,6X及260。為了進一步淘汰車隊中餘下的丹尼士巨龍,城巴於二零一二年加訂二十架Enviro400,首兩架屬是次訂單的新車於二零一三年二月初投入服務,餘下新車亦於六月底前領牌行走。

Brand-new 2-axle double decker appeared in Hong Kong again. Two Alexander Dennis Enviro400s were delivered in late 2009. The Enviro400 is the third member of the Enviro series in Hong Kong. They are also the 2-axle air-con. bus after the Leyland Victory MK2, Dennis Jubilant and the Leyland Olympian 2-axle in the 1980s.

Bus operators decided to purchase 3-axle double-decker since early 80s as they can increase the capacity of buses to meet the demand. Unless for some specific operation conditions (like the Metrobus of KMB for the Route TWISK) or the second hand buses introduced from UK, all new buses are 3-axle designed especially after the development of air-con double-decker to carry the extra load of the air-con unit.

In 2008, as the change in the operating environment, bus operators started looking for the way to reduce operation cost. The introduction of 2-axle air-con double-decker was one of the solution and this was implemented in 2009 with these two Enviro400s. Unlike the Enviro400 operated in UK, the Enviro400 supplied to Hong Kong got some modified to suit the operation environment in Hong Kong and is 0.3 meter longer for accommodation of the Nippon-Denso air-con unit. The Enviro400 not only the first 2-axle super low floor double-decker but also the second Euro 5 double decker in Hong Kong.

The first two Enviro400 delivered to Hong Kong on 22, Nov., 2009 and the one for City Bus was arrange to receive the type approval test after one month of the delivery. Compared with the KMB sample, the tree guard at the top front still retain on this Enviro400 and an orange coloured LED display from Hanover is fitted. This Enviro400 powered by a Cummins ISLe Euro 5 engine with a "Ecolife" gearbox from ZF, with the help of the Selective Catalytic Reduction technology, the emission can achieve the Euro 5 standard. LED lighting inside the cabin and the safety door at the lower saloon is made of a single piece of toughened glass glass.

This City Bus first Enviro400 was registered on 1, Feb., 2010 and started to serve 117, running between Happy Valley and Sham Shui Po on 8, Feb., 2010 and since 22, Mar., 2010, this Enviro400 demonstrator was arranged to serve 260 running between Central and Stanley. City Bus received one more Enviro400 on 14, Jun., 2010. This demonstrator with some further modification after all essential testing of the first one completed. The second City Bus Enviro400 was registered on 2, Jul., 2010 and started to serve passengers since 22, Jul., 2010.

The good and reliable performance resulted in a further 38 Enviro400s were ordered in Nov., 2010 to tie in with the withdrawal of Leyland Olympian and the first batch Dennis Baby Dragon. The production Envrio400 chassis was completed in UK and send to Zhuhai Guangtong Automobile Company Ltd. for bodyworks assembly instead of the Wuzhoulong in Shenzhen which assembled the City Bus Enviro500 before. Unlike the prototype, the production units of Enviro400 choose traditional door as the emergency exit. Lazzerni Pratico seats used on Enviro200 was also chosen in the production Enviro400. The total capacity of production Enviro400 is increased from 88 to 90. To go one step further, Enviro400 is the first installed with a vertical LCD monitor at the lower saloon to provide route information and as a next stop announcement system.

The first production Enviro400 was arrived Hong Kong in the early of Aug., 2011 and after all the testing and process for registration completed, they were entered service on different routes like 6, 6X, 72, 72A, 75, 260 and 629. Further delivery of Enviro400 was made in early 2013 after City Bus placed additional 20 chassis order in 2012, first two of the batch were commissioned in Feb., 2013 and started to replace all Dennis Dragon purchased in 1996 and 1997.


7000, 7001
7002 - 7039
7040 - 7059

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