BMW Motorrad Concept Vehicle BMW East-Scooter. Innovative development study with electrical drive.

Infinite is becoming increasingly deficient in the major conurbation centres and traffic density is growing continuously. Political and social weather are irresolute. All these factors coalesce in increasing demands in terms of

private transportation. The concept vehicle BMW Eastward-Scooter with electric drive provides an innovative look at changing urban mobility needs.

While the currently available, purely electrically-powered scooters have been well-nigh exclusively used inside towns and cities to engagement due to their performance and range, which makes them suitable for short distances only, the concept vehicle BMW East-Scooter offers a much broader spectrum of use.

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High range and excellent performance figures.

Since information technology was conceived equally a future-oriented vehicle for commuting between urban areas and the city centre, therefore attracting funding from the German Federal Ministry of Transport, Building and Urban Development, there were ii main requirements for its development: dynamic figures comparable to those of a maxi scooter with a combustion engine and a high range in realistic weather condition of use.

The concept vehicle BMW E-Scooter provides the necessary sustained  output and maximum speed for rubber and reliable overtaking on urban motorways and also when conveying two people. It is too easily capable of managing hill starts on steep slopes with a pillion passenger.

The evolution study as well has the necessary maximum output to be able to achieve acceleration figures within the important 0 – lx km/h range, which are at the level of current maxi scooters powered by a 600 cc combustion engine.

The high storage capacity of the battery allows a daily driving range of over 100 kilometres. In this way, the BMW E-Scooter concept vehicle provides a long-term, zero-emissions urban and suburban travel pick which is suitable for everyday use.

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Fast charging at conventional power sockets.

The E-Scooter concept vehicle'due south battery is charged at regular household power sockets every bit found in Europe, the The states, Canada and Japan, so no special charging station is required. When the battery is completely apartment, the charging period is less than three hours. Notwithstanding, practical experience has shown that the battery rarely runs out completely, so charging times are  generally shorter.

Frame.

Different existing maxi scooters with combustion engines, the concept vehicle does not accept a main frame. Instead, the aluminium battery casing — which also contains the electronic system required for battery jail cell monitoring —takes over the office of the frame. The steering caput back up is connected to it, as is the rear frame and the left-hand mounted single swing arm with direct hinged, horizontally installed shock absorber.

Electric machine, power electronics and charging device.

Due to its loftier output, the BMW Motorrad development study has no hub motor with direct drive or planetary gearbox. Instead, the high-performance electric machine is mounted backside the bombardment casing. The secondary drive consists of a toothed belt from the electric machine to the chugalug pulley mounted coaxially on the swinging fork pin with drive pinion. From here, power manual occurs via roller chain to the rear cycle. When the East-Scooter is decelerated in abaft throttle or when braking, the free energy released is recuperated, thereby increasing the vehicle'south range by between 10 and 20 per cent depending on driving profile.

The electrical components required for the electric drive are installed on the summit of the battery casing. The external bombardment electronics system permanently collects and monitors data such as the temperature and voltage of the battery cells, both during travel and while charging. The power electronics acts as a control organization and controls the electrical machine. The charging device includes a charge cable which allows the battery to exist recharged at a conventional household power socket. In addition to the other components like an ISO insulation monitor, high-voltage indicator and a loftier-voltage distributor, a DC-DC converter is included. It is required to alter loftier voltage to low voltage power to supply the 12 volt vehicle supply and especially for the control units.

Cooling system.

During travel, the electric automobile and power electronics are liquid-cooled, as is the charging device during charging. An electrical coolant pump ensures coolant circulation through the radiator. While a coolant is commonly used for the bombardment in electrically powered cars, the E-Scooter concept vehicle uses an air cooling organization in order to save infinite.

Rubber.

BMW Motorrad is one of the very few motorcycle manufacturers to be able to depict on its ain experience and expertise in the automobile field in the development of electrically powered vehicles. Synergies are derived from the development of the BMW East-Scooter concept vehicle non merely in the ready availability of technical components but too in the area of high voltage engineering and the associated rubber requirements. Here for the first time, standards established by the leading motorcar manufacturers relating to high voltage safety (> threescore volt) and functional reliability are beingness applied to a ii-cycle vehicle with electric drive.

[Source: BMW ]