新巴E500新訂單+政府擬研究引入天然氣或石油氣巴士

原帖由 arhang2001 於 19/1/2007 20:29 發表



我絕對唔明白你句說話的用意，係暗串抑或其他？

本質上你呢句野，同"那樣需不需要引入人力巴士呢"無分別，
都係一樣灌水。

我認為他誤以Hydrogen作動力來源的巴士= 氧氣巴士
他可能誤以為Hydrogen (氫)= 氧 (Oxygen)

P.S. 用Hydrogen作動力來源的巴士是叫 Fuel Cell Bus

原帖由 CZ_6686 於 19/1/2007 01:29 發表
我知道CNG等另類燃料係令二氧化硫排放量低於柴油,
問題係,現階段既柴油車唔係咁唔環保囉!
況且我覺得以香港既路面環境同埋巴士既載客量,
用另類燃料始終不太可行,石油氣既力量大家有目共睹,
如果石油氣係咁成功,我相信小巴營辦商唔會再買柴油車!

之前看過科學刊物(忘記了邊本)指出有research發現如果柴油引擎能改善燃燒效率到更高水平
(現在好大以例的柴油在引擎中沒有效地被燃燒及使用, 而變成污染物)
及利用催化器柴油引擎是可以追及CNG/LPG 的環保水準.

在外國(e.g.:Adelaide, South Australia)CNG/LPG 的實用結果是
1. 好快用完Gas (大食), 成日要去補油.
2. 無力... 平路還好, 但一上斜就....bye bye. 到gas用到剩1/4到部車會再慢些.  
以前S.A. Gov一定買Gas車, 現在就因上述等原因買新車對Gas隻字不提.

至於香港用CNG/ LPG, 我認為更加不實用
>香港用雙層車個大tank不能像單層可以放車頂, 那麼說就要佔用車廂空間減少客量.
為了保持原有客量, 要購入及使用更多的巴士.
>因為Gas快用完, 為了補油又走多了路, 為了保持原有服務, 車又用多了...
如此的效率在香港似乎....有點那個吧!?

我反而看好Fuel Cell Bus ----此乃個人意見

推介有關的Alternative Fuels Site
Sustainable Green Fleets: Alternative Fuels - Alternative Propulsion

原帖由 tristan 於 2007-1-20 12:25 AM 發表


之前看過科學刊物(忘記了邊本)指出有research發現如果柴油引擎能改善燃燒效率到更高水平
(現在好大以例的柴油在引擎中沒有效地被燃燒及使用, 而變成污染物)
及利用催化器柴油引擎是可以追及CNG/LPG 的環保 ...

同意,而家既柴油車無論起步同著車都唔會有黑煙產生
其實只要政府監管柴油車既維修狀況
依然都會有藍天

歐洲好多地方都有柴油車輛,點解香港要禁止?真係百思不得其解

原帖由 tristan 於 2007-1-20 00:25 發表


之前看過科學刊物(忘記了邊本)指出有research發現如果柴油引擎能改善燃燒效率到更高水平
(現在好大以例的柴油在引擎中沒有效地被燃燒及使用, 而變成污染物)
及利用催化器柴油引擎是可以追及CNG/LPG 的環保 ...

Actually, diesal engine technology has moved a long way over the last 7-8 years that
it has become very efficient and less polluted than a lot of people think. A Euro-3/4
standard diesal is actually emitting less pollutants, with the exception of CO2. They are
so good that Transport of London did not even bother to consider putting gas buses in
service, as they would not bring much more benefit in terms of cost and environment.

I agree that fuel cell bus will be a good idea, but the price is much too expensive now for
what it is, and there is absolutely no provision of infrastructure to support their operation
in HK anyway. Unless the government is actually taking the lead and put in some investment,
there is very little chance you will see a fuel cell bus to appear in HK, in the next 5-10 years
I suspect.

If anything, I see hybrid-powered buses to be the more likely candidate to appear in HK in
short term, esp. London is looking to evaluate a few hybrid double deckers like the Wright
HEV and Volvo's hybrid "B9TL"s this year. If the trial proves successful, I think we stand a
good chance to se the first hybrid double decker in HK in the next 2/3 years.

原帖由 CZ_6686 於 2007-1-20 02:02 發表

同意,而家既柴油車無論起步同著車都唔會有黑煙產生
其實只要政府監管柴油車既維修狀況
依然都會有藍天

歐洲好多地方都有柴油車輛,點解香港要禁止?真係百思不得其解

香港禁止柴油車輛?
你講柴油私家車呀
好明顯係稅率唔同o既問題
除非可以分開私家車用柴油同商業車用柴油啦

原帖由 sutrak 於 2007-1-19 11:29 發表


我既感覺:
起步低轉冇乜力,步入中高轉就突然好好力......不過o黎得好急. 唔似ISMe一起步已經好爽.
某程度覺得ATEU 1同 AVBW 15 既感覺好似......

我覺得AVBW15好過ATEU1好多, ATEU1起步低轉到好似就O黍死火咁,
不過中高轉果下真係好勁, 突然間去得好快, 而AVBW15就平均DD....

Apart from the Hydrogen Fuel Cell bus, there is also an hydrogen bus somewhere.

Due to the pressurised nature of CNG, if it is fuelled too quickly, only a limited amount of gas can be taken.
Realistically it needs to be fuelled overnight, and not many bus systems can afford to do so.

For single decks pre-low floor days the gas tanks are mounted under floor.  As low floor buses came they
were relocated to the roof.  With a double deck there is no room for it on the roof and hence some upper/lower
deck space currently used for seating will have to be sacrificed.

原帖由 Eddie 於 2007-1-20 08:49 AM 發表

香港禁止柴油車輛?
你講柴油私家車呀
好明顯係稅率唔同o既問題
除非可以分開私家車用柴油同商業車用柴油啦

當然除左柴油私家車,的士,小巴都係啦
試問而家邊個的士車主滿意石油氣的士既表現?

原帖由 fai 於 2007-1-19 17:26 發表


咁同其他B9(AVBE/AVBW/AVD1)比較又有冇分別呢？

大家唔同波箱分唔到.
等之後出牌用VOITH波箱既AVBE 先可以再研究
不過如果同新加坡既B9(Voith)比我覺得新加坡o個批B9比ATEU 1爽D

PS:我真係越來越唔鍾意新車用ZF 6HP...攪到起步慢晒

[ 本帖最後由 sutrak 於 2007-1-22 00:01 編輯 ]

原帖由 DY4315 於 2007-1-20 09:34 發表


我覺得AVBW15好過ATEU1好多, ATEU1起步低轉到好似就O黍死火咁,
不過中高轉果下真係好勁, 突然間去得好快, 而AVBW15就平均DD....

坐過AVBW15 好多次......(好多次60X 同一次 2)...都覺得架車起步慢......係前排坐過一次由非掛牌車長渣既先覺得部車有D料到.....不過同ATE 比始終差D.....