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| Detail Bus Model Shop -> Hong Kong Bus Model(Kowloon Motor Bus) |
| Hong Kong Bus Model -- Kowloon Motor Bus Volvo B9TL Alexander |
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Hong Kong Bus Model -- Kowloon Motor Bus Volvo B9TL Alexander
The Volvo B9TL is the latest low floor double decker bus model from Volvo Buses. The B9TL supersedes the older Volvo B10TL, also known as the Super Olympian.
Chassis
The B9TL chassis shared the same design of the B7TL. The key difference from both its predecessor, the B10TL Super Olympian and B7TL, is the new 9.4-litre engine originally designed by Renault. The radiator is located at the rear offside, similar the smaller B7TL. The front module design is shared with other low-floor bus chassis built by Volvo, and independent suspension is fitted at the front axle.
The B9TL was initially offered in 3-axle format, and the 2-axle variant was added in 2006 to replace the B7TL. The driveline comprises a Volvo D9A Euro III engine (rated at 300bhp or 340bhp), which was later replaced by the Volvo D9B Euro IV engine (uses selective catalytic reduction technology; two versions were offered - the D9B260 rated at 260bhp for 2-axle version, and a higher powered D9B310, rated at 310bhp, for 3-axle version), and coupled to a ZF 5/6-speed gearbox. Volvo also offer the Voith 4-speed gearbox as an option.
The front wheels of 3-axle B9TL are usually supplied by ALCOA of the USA, but some buses (including the 3 prototypes) have all their wheels supplied by ALCOA.
Hong Kong
Kowloon Motor Bus
AVD1
A Volvo B9TL prototype was delivered to Hong Kong in July 2003 for Kowloon Motor Bus as a demonstrator for the Eco-Driveline concept (a large differential ratio, an engine with high low-end torque, and a 6-speed automatic gearbox with double overdrive ratios). However, the Volgren CR223LD body (which is actually known to have been assembled in Switzerland) had a width of only 2500mm instead of the usual 2550mm. After months of testing, the bus was licensed as LJ7006 and numbered AVD1 in March 2004. It was put into service in April 2004.
As a result of these tests, Volvo Buses and ZF adopted the Eco-Driveline system as the primary driveline option on the B9TL.
Later it was confirmed that AVD1 would leave Hong Kong after its evaluation, and a farewell tour was held by Bus Fan World on 12 December 2004. The bus was delicensed on 15 December 2004 and left Hong Kong at noon on 21 December 2004.
In August 2005, AVD1 was shipped back to Hong Kong after its D9A engine was replaced by a D9B unit. Pre-October 2005, the bus was kept by Volvo in the Hong Kong United Dockyard. Later in 2005, the bus was transferred to KMB for installation of service equipment. The bus was re-licensed as MF5119 in February 2006, and re-entered service on 24 May 2006. The bus is one of the first two to meet the Euro IV emissions standards in Hong Kong (the other is an Alexander Dennis Enviro 500 with fleet number ATEU1, originally ATE257).
AVBE/AVBW class
KMB's Wright-bodied B9TL.In early 2004, a Volvo B9TL prototype with a modified version of the TransBus Enviro 500 body arrived in Hong Kong. It had a slightly different front and rear design, and its rear route box was moved beneath the upper deck rear window. After TransBus International was renamed Alexander Dennis in May 2004, it became the only TransBus Enviro-series bus with a non-Dennis chassis.
Later in the same year, a Wright-bodied B9TL prototype was also delivered. The rear design of its Wright body was different from that of the Wright-bodied Volvo B10TL (AVW-class), with the number plate moved beneath (and a little to the right of) the rear route box.
On 12 January 2005, the TransBus Enviro 500-bodied B9TL was finally licensed as LU3721 with fleet number AVBE1, and the Wright-bodied B9TL was licensed as LU3739 with fleet number AVBW1. Both of them entered service on the night of 8 February 2005.
In early 2005 Kowloon Motor Bus ordered 25 B9TL chassis with Wright bodywork, which entered service in 2005/2006. One of them (fleet number AVBW25) had participated in the EFE Showbus 2005 event in the UK before delivery.
In late 2005, Kowloon Motor Bus placed a further order of 38 Wright-bodied B9TL and 50 Enviro 500-bodied B9TL. The Wright-bodied buses entered service in mid/late-2006, and the Enviro 500-bodied buses entered service in late 2006/2007.
Volvo B9TL. (2007, August 22). In Wikipedia, The Free Encyclopedia. Retrieved 14:20, August 26, 2007
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