Neoplan Skyliner
Encyclopedia
The NEOPLAN Skyliner is a double-deck
Double-decker bus
A double-decker bus is a bus that has two storeys or 'decks'. Global usage of this type of bus is more common in outer touring than in its intra-urban transportion role. Double-decker buses are also commonly found in certain parts of Europe, Asia, and former British colonies and protectorates...

 multi-axle
Multi-axle bus
A multi-axle bus is a bus or coach that has more than the conventional two axles, usually three , or more rarely, four...

 luxury touring coach
Coach (vehicle)
A coach is a large motor vehicle, a type of bus, used for conveying passengers on excursions and on longer distance express coach scheduled transport between cities - or even between countries...

 built by the German
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

 coach manufacturer
Bus manufacturing
Bus manufacturing is a specific sector of the automotive industry, which carries out the manufacturing of buses and coaches.-History:Bus manufacturing had its earliest origins in carriage building. Other bus manufacturers had their origins in truck manufacturing...

 and MAN SE subsidiary NEOPLAN Bus GmbH
Neoplan
NEOPLAN Bus GmbH is a German automotive company that manufactures buses, trolleybuses and coaches. NEOPLAN is now a subsidiary of NEOMAN Bus GmbH, which itself is a part of MAN SE.-Foundations:...

.

History

In 1964, the founder's second son, Konrad Auwärter, developed a double-deck design
Double-decker bus
A double-decker bus is a bus that has two storeys or 'decks'. Global usage of this type of bus is more common in outer touring than in its intra-urban transportion role. Double-decker buses are also commonly found in certain parts of Europe, Asia, and former British colonies and protectorates...

 for a service bus as part of his dissertation. The 'Do-Bus' design had extremely low weight, and could carry over 100 passengers. It also featured a low-frame front axle
Axle
An axle is a central shaft for a rotating wheel or gear. On wheeled vehicles, the axle may be fixed to the wheels, rotating with them, or fixed to its surroundings, with the wheels rotating around the axle. In the former case, bearings or bushings are provided at the mounting points where the axle...

 with forward-mounted steering
Steering
Steering is the term applied to the collection of components, linkages, etc. which will allow a vessel or vehicle to follow the desired course...

 gear that permitted a low flat floor. The double-deck principle was applied to coach design, creating a revolutionary high-capacity comfortable vehicle for touring. This vehicle was known as the Skyliner, and created an image for the company that differentiated the NEOPLAN brand from its competitors, and created interest in its products across Europe.

A second manufacturing facility opened in Pilsting
Pilsting
Pilsting is a municipality in the district of Dingolfing-Landau in Bavaria in Germany....

 in 1973, and a third opening in Kumasi
Kumasi
Kumasi is a city in southern central Ghana's Ashanti region. It is located near Lake Bosomtwe, in the Rain Forest Region about northwest of Accra. Kumasi is approximately north of the Equator and north of the Gulf of Guinea...

, Ghana
Ghana
Ghana , officially the Republic of Ghana, is a country located in West Africa. It is bordered by Côte d'Ivoire to the west, Burkina Faso to the north, Togo to the east, and the Gulf of Guinea to the south...

 in December 1974 to support a large order.

The double-deck Skyliner concept was taken to its ultimate conclusion in 1975, with the introduction of the Jumbocruiser
Neoplan Jumbocruiser
The NEOPLAN Jumbocruiser was an articulated double-deck multi-axle city coach built by NEOPLAN Bus GmbH between 1975 and 1992. At 18 meters in length, 2.50m wide and 4m in height, it is in the Guinness World Records as the world's largest bus with a capacity for 170 passengers.-History:The...

, a double-deck articulated coach 18 metre long and 4 metre high. The Spaceliner, introduced in 1979 took the Cityliner concept of passenger floor level above the driver, and extended the actual floor above the cab. This kept the height of the vehicle lower than a double-decker, at 3.65 metre, but still allowed installation of toilets, kitchens or sleep cabins below the passenger compartment.

UK

The NEOPLAN Skyliner also gained popularity in the United Kingdom
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

. Stagecoach bought some Skyliners during the 1980s to facilitate its new coaching division developed during the company's early years. In 2004, it bought 25 more N122/3L Skyliners for its modern coaching divisions the Oxford Tube and Megabus
Megabus (United Kingdom)
Megabus is a UK coach service operated by Stagecoach Group. It started in 2003 and as of February 2010 operated 19 UK coach routes serving 41 destinations in England, Scotland and Wales. Some services link with Megatrain services which are also operated by Stagecoach...

. Trathens Travel Services of Plymouth
Plymouth
Plymouth is a city and unitary authority area on the coast of Devon, England, about south-west of London. It is built between the mouths of the rivers Plym to the east and Tamar to the west, where they join Plymouth Sound...

 also bought some Skyliners in 2005 for its National Express contracts. However, many of these were displaced following the accident with a National Express Skyliner (see below) - when some Plaxton Panthers were bought in 2007.

Specifications (2009)

The NEOPLAN Skyliner has undergone a process of evolution in specification since its 1964 introduction. , the double-deck Skyliner is available in two lengths: the Skyliner C and the Skyliner L. The shorter C version used to be 12 metre long, but is now 12.44 metre; and the Skyliner L is 13.79 metre long, and includes a correspondingly longer wheelbase
Wheelbase
In both road and rail vehicles, the wheelbase is the distance between the centers of the front and rear wheels.- Road :In automobiles, the wheelbase is the horizontal distance between the center of the front wheel and the center of the rear wheel...

. The Skyliner C is designed to seat 69 passengers plus two crew (driver and steward), whereas the Skyliner L seats 77 plus two.

For the powertrain
Powertrain
In a motor vehicle, the term powertrain or powerplant refers to the group of components that generate power and deliver it to the road surface, water, or air. This includes the engine, transmission, drive shafts, differentials, and the final drive...

 detail, current Skyliners use an MAN diesel engine
Diesel engine
A diesel engine is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel, which is injected into the combustion chamber...

 sourced from Neoplan
Neoplan
NEOPLAN Bus GmbH is a German automotive company that manufactures buses, trolleybuses and coaches. NEOPLAN is now a subsidiary of NEOMAN Bus GmbH, which itself is a part of MAN SE.-Foundations:...

 parent company MAN Nutzfahrzeuge AG. This Euro4 rated diesel fueled internal combustion engine
Internal combustion engine
The internal combustion engine is an engine in which the combustion of a fuel occurs with an oxidizer in a combustion chamber. In an internal combustion engine, the expansion of the high-temperature and high -pressure gases produced by combustion apply direct force to some component of the engine...

 is the 12.5 litre MAN D2676 LOH 02 straight-six (R6) common rail
Common rail
Common rail direct fuel injection is a modern variant of direct fuel injection system for petrol and diesel engines.On diesel engines, it features a high-pressure fuel rail feeding individual solenoid valves, as opposed to low-pressure fuel pump feeding unit injectors...

 turbodiesel
Turbodiesel
Turbodiesel refers to any diesel engine with a turbocharger. Turbocharging is the norm rather than the exception in modern car and truck diesel engines...

 with intercooler
Intercooler
An intercooler , or charge air cooler, is an air-to-air or air-to-liquid heat exchange device used on turbocharged and supercharged internal combustion engines to improve their volumetric efficiency by increasing intake air charge density through nearly isobaric cooling, which removes...

, which displaces
Engine displacement
Engine displacement is the volume swept by all the pistons inside the cylinders of an internal combustion engine in a single movement from top dead centre to bottom dead centre . It is commonly specified in cubic centimeters , litres , or cubic inches...

 12412 cc, and utilises four valves
Multi-valve
In automotive engineering a multi-valve or multivalve engine is one where each cylinder has more than two valves. A multi-valve engine has better breathing and can operate at higher revolutions per minute than a two-valve engine, delivering more power.- Multi-valve rationale :A multi-valve design...

 per cylinder
Cylinder (engine)
A cylinder is the central working part of a reciprocating engine or pump, the space in which a piston travels. Multiple cylinders are commonly arranged side by side in a bank, or engine block, which is typically cast from aluminum or cast iron before receiving precision machine work...

 and cylinder-direct fuel injection
Direct injection
Direct injection may refer to:*A music recording technique more commonly referred to as Direct Input*A method of fuel injection for an internal combustion engine, as in a gasoline direct injection petrol engines and most diesel engines...

. It uses a Bosch
Robert Bosch GmbH
Robert Bosch GmbH is a multinational engineering and electronics company headquartered in Gerlingen, near Stuttgart, Germany. It is the world's largest supplier of automotive components...

 EDC7 electronic engine control unit
Engine control unit
An engine control unit is a type of electronic control unit that determines the amount of fuel, ignition timing and other parameters an internal combustion engine needs to keep running...

, and also uses a 'PM-KAT' catalytic converter
Catalytic converter
A catalytic converter is a device used to convert toxic exhaust emissions from an internal combustion engine into non-toxic substances. Inside a catalytic converter, a catalyst stimulates a chemical reaction in which noxious byproducts of combustion are converted to less toxic substances by dint...

. It produces a DIN
Deutsches Institut für Normung
is the German national organization for standardization and is that country's ISO member body. DIN is a Registered German Association headquartered in Berlin...

-rated motive
Motive power
In thermodynamics, motive power is an agency, as water or steam, used to impart motion. Generally, motive power is defined as a natural agent, as water, steam, wind, electricity, etc., used to impart motion to machinery; a motor; a mover. The term may also define something, as a locomotive or a...

 power
Power (physics)
In physics, power is the rate at which energy is transferred, used, or transformed. For example, the rate at which a light bulb transforms electrical energy into heat and light is measured in watts—the more wattage, the more power, or equivalently the more electrical energy is used per unit...

 output of 353 kW at 1,900 revolutions per minute
Revolutions per minute
Revolutions per minute is a measure of the frequency of a rotation. It annotates the number of full rotations completed in one minute around a fixed axis...

 (rpm), and generates a torque
Torque
Torque, moment or moment of force , is the tendency of a force to rotate an object about an axis, fulcrum, or pivot. Just as a force is a push or a pull, a torque can be thought of as a twist....

 turning force of 2300 newton metres (1,696 ft·lbf) at 1,050-1,400 rpm. The engine is mounted upright in a longitudinal
Longitudinal engine
In automotive engineering, a longitudinal engine is an internal combustion engine in which the crankshaft is oriented along the long axis of the vehicle, front to back....

 orientation at the rear
Rear-engine design
In automobile design, a rear-engine design layout places the engine at the rear of the vehicle. The center of gravity of the engine itself is past the rear axle...

 of the coach, and transmits its output to the rear roadwheels
Wheel
A wheel is a device that allows heavy objects to be moved easily through rotating on an axle through its center, facilitating movement or transportation while supporting a load, or performing labor in machines. Common examples found in transport applications. A wheel, together with an axle,...

 via a twelve-speed TipMatic ZF
ZF Friedrichshafen
ZF Friedrichshafen AG, also known as ZF Group, and commonly abbreviated to ZF, is a German public company headquartered in Friedrichshafen, in the south-west German region of Baden-Württemberg....

 AS Tronic automated manual transmission
Semi-automatic transmission
A semi-automatic transmission is an automobile transmission that does not change gears automatically, but rather facilitates manual gear changes by dispensing with the need to press...

.

An interesting design on the Skyliner is its 'tag' third axle
Axle
An axle is a central shaft for a rotating wheel or gear. On wheeled vehicles, the axle may be fixed to the wheels, rotating with them, or fixed to its surroundings, with the wheels rotating around the axle. In the former case, bearings or bushings are provided at the mounting points where the axle...

. This is able to articulate, during steering movements - and this helps reduce tyre
Tire
A tire or tyre is a ring-shaped covering that fits around a wheel rim to protect it and enable better vehicle performance by providing a flexible cushion that absorbs shock while keeping the wheel in close contact with the ground...

 wear, which can afflict dual rear axle vehicles. It features disc brake
Disc brake
The disc brake or disk brake is a device for slowing or stopping the rotation of a wheel while it is in motion.A brake disc is usually made of cast iron, but may in some cases be made of composites such as reinforced carbon–carbon or ceramic matrix composites. This is connected to the wheel and/or...

s all round, and utilises independent suspension
Independent suspension
Independent suspension is a broad term for any automobile suspension system that allows each wheel on the same axle to move vertically independently of each other. This is contrasted with a beam axle, live axle or deDion axle system in which the wheels are linked – movement on one side affects...

 on the front and trailing third axles, whilst the driven axle is a solid version.

Standard safety features include 'electronically regulated braking system
Anti-lock braking system
An anti-lock braking system is a safety system that allows the wheels on a motor vehicle to continue interacting tractively with the road surface as directed by driver steering inputs while braking, preventing the wheels from locking up and therefore avoiding skidding.An ABS generally offers...

' (EBS) with braking assistant
Brake assist
Brake Assist is a generic term for an automobile braking technology that increases braking pressure in an emergency situation. The first application was developed jointly by Daimler-Benz and TRW/LucasVarity...

 (BA) and Electronic Stability Programme
Electronic stability control
Electronic stability control is a computerized technology that may potentially improve the safety of a vehicle's stability by detecting and minimizing skids. When ESC detects loss of steering control, it automatically applies the brakes to help "steer" the vehicle where the driver intends to go...

 (ESP). It also features a speed-limiting device called 'maximum speed control' (MSC), and is fitted with an accident data recorder
Event Data Recorder
An event data recorder or EDR is a device installed in some automobiles to record information related to vehicle crashes or accidents. In modern diesel trucks, EDRs are triggered by electronically sensed problems in the engine , or a sudden change in wheel speed. One or more of these conditions...

 (ADR). An optional feature is the 'lane guard system
Lane departure warning system
In road-transport terminology, a lane departure warning system is a mechanism designed to warn a driver when the vehicle begins to move out of its lane on freeways and arterial roads. These systems are designed to minimize accidents by addressing the main causes of collisions: driver error,...

' (LGS), which will vibrate the drivers seat should the coach drift out of its lane.

Its maximum permissible weight
Gross vehicle weight rating
A gross vehicle weight rating is the maximum allowable total weight of a road vehicle or trailer when loaded - i.e., including the weight of the vehicle itself plus passengers, and cargo....

 is 26000 kilograms (57,320 lb), and can have a total luggage volume of up to 7.9 cubic metres (279 cu ft).
modelinternal combustion engine
Internal combustion engine
The internal combustion engine is an engine in which the combustion of a fuel occurs with an oxidizer in a combustion chamber. In an internal combustion engine, the expansion of the high-temperature and high -pressure gases produced by combustion apply direct force to some component of the engine...

max. power
Power (physics)
In physics, power is the rate at which energy is transferred, used, or transformed. For example, the rate at which a light bulb transforms electrical energy into heat and light is measured in watts—the more wattage, the more power, or equivalently the more electrical energy is used per unit...

 @ rpm
Revolutions per minute
Revolutions per minute is a measure of the frequency of a rotation. It annotates the number of full rotations completed in one minute around a fixed axis...

max. torque
Torque
Torque, moment or moment of force , is the tendency of a force to rotate an object about an axis, fulcrum, or pivot. Just as a force is a push or a pull, a torque can be thought of as a twist....

 @ rpm
transmission
Transmission (mechanics)
A machine consists of a power source and a power transmission system, which provides controlled application of the power. Merriam-Webster defines transmission as: an assembly of parts including the speed-changing gears and the propeller shaft by which the power is transmitted from an engine to a...

wheelbase
Wheelbase
In both road and rail vehicles, the wheelbase is the distance between the centers of the front and rear wheels.- Road :In automobiles, the wheelbase is the horizontal distance between the center of the front wheel and the center of the rear wheel...

lengthwidthheight
Skyliner C
(double-deck
Double-decker bus
A double-decker bus is a bus that has two storeys or 'decks'. Global usage of this type of bus is more common in outer touring than in its intra-urban transportion role. Double-decker buses are also commonly found in certain parts of Europe, Asia, and former British colonies and protectorates...


multi-axle
Multi-axle bus
A multi-axle bus is a bus or coach that has more than the conventional two axles, usually three , or more rarely, four...

)
MAN D2676 LOH 02,
12412 cc R6 common rail
Common rail
Common rail direct fuel injection is a modern variant of direct fuel injection system for petrol and diesel engines.On diesel engines, it features a high-pressure fuel rail feeding individual solenoid valves, as opposed to low-pressure fuel pump feeding unit injectors...

 turbodiesel
Turbodiesel
Turbodiesel refers to any diesel engine with a turbocharger. Turbocharging is the norm rather than the exception in modern car and truck diesel engines...

353 kW @ 1,900 2300 N·m (1,696 ft·lbf)
@ 1,050-1,400
12-speed TipMatic
ZF
ZF Friedrichshafen
ZF Friedrichshafen AG, also known as ZF Group, and commonly abbreviated to ZF, is a German public company headquartered in Friedrichshafen, in the south-west German region of Baden-Württemberg....

 AS Tronic automated manual
Semi-automatic transmission
A semi-automatic transmission is an automobile transmission that does not change gears automatically, but rather facilitates manual gear changes by dispensing with the need to press...

5550 and 1300 mm (218.5 and 51.2 ) 12.44 metre 2.55 metre 4 metre
Skyliner L
(double-deck
multi-axle)
MAN D2676 LOH 02,
12412 cc R6 common rail turbodiesel
353 kW @ 1,900 2300 N·m (1,696 ft·lbf)
@ 1,050-1,400
12-speed TipMatic
ZF AS Tronic automated manual
6900 and 1300 mm (271.7 and 51.2 ) 13.79 metre 2.55 metre 4 metre

Accidents

In March 2003 near Nažidla in South Bohemian Region
South Bohemian Region
South Bohemian Region is an administrative unit of the Czech Republic, located mostly in the southern part of its historical land of Bohemia, with a small part in southwestern Moravia...

 a Neoplan Skyliner overturned on Czech
Czech Republic
The Czech Republic is a landlocked country in Central Europe. The country is bordered by Poland to the northeast, Slovakia to the east, Austria to the south, and Germany to the west and northwest....

 European route E55
European route E55
European route E 55 is a E-route. It passes through the following cities:Helsingborg … Helsingør – Copenhagen – Køge – Vordingborg – Nykøbing Falster – Gedser … Rostock – Berlin – Lübbenau – Dresden – Teplice – Prague – Tábor – Linz – Salzburg – Villach – Tarvisio – Udine – Palmanova – Mestre...

, killing nineteen people and one man died two years later due to the injuries sustained in the crash. Thirty-four people were injured. It has been the biggest bus accident in history of the Czech Republic
Czech Republic
The Czech Republic is a landlocked country in Central Europe. The country is bordered by Poland to the northeast, Slovakia to the east, Austria to the south, and Germany to the west and northwest....

.

In May 2003 in France
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 a Neoplan Skyliner overturned on a French
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 highway, killing twenty-eight people. A report by French investigators recommended that drivers of double-deck coaches should receive special training because of the vehicle's relative instability. A separate study, presented to the United Nations Economic Commission for Europe in the same year reported that high-sided coaches were much more likely to overturn in crashes than standard single-deck coaches. The German manufacturer added a safety system, known as electronic stability control, which brakes each wheel separately to prevent overturning in 2006.

In January 2007 a Neoplan Skyliner operated by National Express Coaches overturned and crashed on the M25 motorway
M25 motorway
The M25 motorway, or London Orbital, is a orbital motorway that almost encircles Greater London, England, in the United Kingdom. The motorway was first mooted early in the 20th century. A few sections, based on the now abandoned London Ringways plan, were constructed in the early 1970s and it ...

 near Heathrow Airport, killing two passengers; a third passenger died six-months later due to the injuries sustained in the crash. The company temporarily withdrew all twelve Skyliners from service pending investigations The crash was deemed to have been caused by travelling at excessive speed and the driver was charged with three counts of causing death by dangerous driving. He was subsequently jailed for five years and banned from driving for three years. No safety issues were found. The electronic stability control system which had been introduced on new vehicles in 2006 was not used on this vehicle.

External links

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