Usually, aftermarket specialists focus their attention on updating the looks and improving the performance of the various cars they get their hands on. Lorinser however, will bring something different at this year's Essen motor show. Lorinser will present this year the Easybrid - an innovative retrofit hub motor for compact cars which will be showcased on a Smart Fortwo. The Lorinser Easybrid electric motor on the Smart Fortwo develops an additional 30 kW (about 41hp). This transforms the Lorinser Easybrid Smart Fortwo in a hybrid vehicle.
The Lorinser Easybrid hub motor is not developed for the Smart Fortwo only, and can be fitted to any car that has drum brakes at the rear axle. The stators of the Lorinser Easybrid hub motor
are adapted to the braking armature discs.
The Lorinser Easybrid Smart Fortwo has a range of up to 30 km of electric driving only which can be extended to 500 kilometers with the combined hybrid mode.
Lorinser Press Release:
Lorinser presents Easybrid at the Essen Motor Show 2010 β an innovative retrofit hub motor for compact cars
Which driver of a compact car has not already wished for more power in his automobile and if possible without extra fuel consumption and any additional environmental pollution? But up till now, this went hand in hand with the other and therefore such wishes remained unfulfilled. On the Essen Motor Show 2010, Sportservice Lorinser now presents Easybrid as an innovative solution. A retrofit electric hub motor with 30 kW additional effective output, exemplarily fitted in a Smart Fortwo.
Already at the beginning of the 20th century, automobile manufacturers experimented with hub motors and fitted them into their cars β among them also Ferdinand Porsche. Nevertheless, this development was soon destined for obscurity, as the general public rather wanted a combustion engine. Due to the further increasing fuel prices and the current environmental-, climate- and CO2-debates, more and more companies are thinking about the future of individual mobility and display electric cars and hybrid automobiles, yet knowing that these will not get over their concept car status for the time being. Especially German automobile manufacturers seem to have missed the trend and only fit
hybrid technology into luxury class automobiles if after all.
But what if it was possible to fit hybrid technology as a retrofit solution into cars which are designed for everybody? Is it after all possible to retrofit compact cars? Would such a modification not be too elaborate and therefore too expensive? Sportservice Lorinser, usually known for its sportive refining of Mercedes Benz automobiles, is now tackling these questions. The company based in Waiblingen / Swabia and its project manager Martin Oberdoerfer-Schmidt conclude: βThe modification is possible and can also be performed in an easy and therefore economic way.β
The preconditions are that the automobile in question has to have drum brakes at the rear axle, but this is quite common with small and compact cars. So-called stators are adapted to the braking armature discs. These are accumulated electric coils which are supplied with directed power via control electronics in order to magnetise them and therefore turn the rotor on the wheel hub which is equipped with permanent magnets in rolling direction.
Therefore, any kind of engine, differential and driving shaft becomes unnecessary as the engine directly affects the individual wheel and accelerates it. Altogether, this means that the nominal capacity of the electronic motor is transferred to the road nearly without any frictional loss. With the help of a control unit the power of the hub motors is added to the initial power of the combustion engine. As the modification is usually added to the rear axle, many of the vehicles in question are therefore turned into four wheel drive cars which render additional traction advantages at winter time.
Easybrid supports the existing fuel- or diesel engines of the individual cars and renders an additional power of approximately 30 kW (about 41hp) for improved acceleration- and final speed outputs. At the same time, the consumption- and CO2-
levels drop. As electric engines are very powerful and their maximum torque is
reached after only one revolution, it is also possible to move these cars solely on an
electric basis. With this retrofit solution, Lorinser does not only cover all advantages
of modern hybrid acceleration, but also allows the driver to choose his operational
mode. Apart from the combination of both engines, he can also opt for either the sole
electronic or sole combustion engine. The driver can therefore decide if he wishes to
use fuel or electricity or a combination of both.
In order to recharge the lithium ionic batteries of the electric engine which for space
saving measures are either stored in the reserve wheel drop or under the vehicle, the
automobile can either be connected to a usual socket or use the so-called
recuperation during its operation. This means that the energy which is generated
during braking and driving downhill recharges the batteries. Therefore, the car can
run approximately 30 kilometres on sole electric power and depending on the model
far than 500 kilometres with the combined hybrid mode. In a combination with
modern turbodiesel engines, even wider distances are possible.
On the Essen Motor Show 2010 which starts on November 27th, Lorinser will
introduce a first driveable prototype based on a Smart Fortwo with a retrofit hub
motor. Further possible models suitable would be the Volkswagen Polo, the Renault
Twingo or the Fiat 500. Also older models are suitable and in future, Lorinser will
develop solutions for these models as well. Already since May 2009, the Lorinser
engineers have been co-operating with external development partners on the retrofit
hub motors and prototypes which were equipped with such technology. The test
period will be ending by mid 2011 and from then on, it will be possible to equip first
customer cars.
But of course, such a modification for compact cars only makes sense if it does not
exceed the value of the automobile. Therefore, Sportservice Lorinser has revised the
overall project and added an innovative idea. Following the offer for mobile phones,
contracts can be introduced which bind a customer to an energy provider owning the
batteries of the car on a long-term basis. The energy provider could therefore use its
own battery as energy storage for vehicle-to-grid concepts and the car driver could
pay the batteries by an increased energy price. Thereby, Lorinser pays tribute to the
fact that mobility will not become any cheaper in future, but battery prices will
significantly drop and fuel prices will surely increase.
Therefore, it is interesting for both parties - the drivers of electric- and hybrid cars as
well as the utility companies. The latter could even introduce an energy flat rate for
corporate clients with a fleet of electric automobiles. Such concepts are momentarily
discussed with energy suppliers.
With such a battery financing concept between supplier and consumer, the
modification of a compact car could come down to about EUR 5,000. If the
government should participate in subsidising the lower CO2-emissions by putting an
extra tax on automobiles with less favourable values, the effective costs for the hub
motor retrofit could be even further reduced.