亞歷山大丹尼士Enviro400 Alexander Dennis Enviro400
Still remember the first two air-con. double deckers in KMB fleet? For details and the story of these two demonstrators, you can visit The Pioneer of Air-Conditioned Double-decker within Cute Bus File. The 2-axle air-con. bus was appeared in Hong Kong again in 2009 with the Alexander Dennis Enviro400 which was the third Enviro family member served in Hong Kong and came with a lot of innovative designs. KMB received it first Enviro400 from Alexander Dennis on 22 Nov., 2009 and this was the third Euro 5 bus in the fleet. Compared with the Dennis Jubilant and Leyland Victory Mk 2, this Enviro400 was much advanced in design like the super low floor compartment, a Cummins ISLe Euro 5 engine with a ZF fully automatic transmission was located at the rear and powerful enough to drive the Nippon-Denso air-conditioning unit.
There was a tree guard at the top front, but this had removed before the Enviro400 shown to the public. In addition, the daytime running lamp on this demonstrator was disconnected until 2016 as a result of failed to comply with the related ordinance. The Enviro400 was the first bus adopted the LED lighting in KMB fleet and the safety door at the lower saloon was made of a single piece of toughened glass. Hanover was chosen for the electronic display. The law restricted the maximum load 16 tonnes for 2-axles vehicles, however, as the operation need, Enviro400 was allowed to have the maximum load for 18 tonnes and total capacity was 88 passengers (41 upper seatings and 23 lower seatings with 24 standees).
The KMB Enviro400 demonstrator was undergone type approval test on 26, Nov., 2009 and exhibited at the press release about the launch of the Enviro400 just a day before receiving the tilt test on 8, Dec., 2009. This demonstrator was registered as PC4053 on 20, Jan., 2010 and classed as ATSE1. ATSE1 was first used to promoted the new features on the Enviro400 before entering service on route 606 since 17, Feb., 2010 for revenue evaluation.
KMB ordered it first batch of 50 Alexander Dennis Enviro400 in 2011 and like the Enviro500, all chassis were first sent to HK before completed their bodywork by Guangtong Automobile Company Ltd in Zhuhai. The first of the batch was delivered to KMB in Sep., 2012 and registered in early Nov., 2012. The production unit Enviro400 had some differences between the prototype and first to be mentioned was the transmission unit was changed from ZF to Voith. The carrying capacity was increased from 88 to 90 with 47 upper seatings and 23 lower seatings with 20 standees and Vogelsitze light-weight seats were chosen. The daytime running lamp was retained and connected when entering service. Finally, the Alexander Dennis Enviro400 was the first in KMB to be fitted with Hanover orange coloured LED route display.
KMB first deployed the Enviro400 on routes 63X, 269M,276 and 269M which serving Yuen Long and Tin Shui Wai, further new buses were then allocated on routes serving Tseung Kwan O, Tai Po, Sha Tin and Kwai Tsing like 41, 72A, 74A, 84M, 234X, 690 and 692 etc. Earlier generation next stop announcement system which was manual operated was first fitted on Enviro400, but soon replaced with a latest version system featured with automatically operated and this was become the standard in KMB fleet.
As several Enviro400 upper deck windscreen was damaged when working on route 64K after the typhoon Mangkhut on 16 Sep., 2018, tree guard was fitted at the top front since Nov., 2018. After the Enviro500MMC 11.3m was chosen as the successor of the Dennis Trident 10.6m and Volvo Baby Super Olympian, no more Enviro400 joined KMB was expected and at present, they were mainly seen on route 7B, 46, 53, 64K,77K, 91, 91M and 103.
回到上一目錄 Back To Last Index
回到主頁 Back To Main