•More efficiency for the volume segment thanks to the new manual gearbox MQ281

•Initially installed in the new Passat; other Volkswagen models to follow suit

Wolfsburg (Germany) – Volkswagen has developed a new state-of-the-art manual gearbox: the MQ281, as it is known, works efficiently and saves up to five grams of CO2 per kilometre depending on the engine-gearbox combination. The new Passat is the first vehicle to be equipped with the MQ281, followed by almost all vehicle classes of the Volkswagen Group.

Nobody took much notice of manual gearboxes until now. However, only slight modifications were sufficient to improve efficiency and consumption with a huge impact on emissions and the environment. Although they function unobtrusively, manual gearboxes have a significant share of the gearbox market worldwide due to a high installation rate.

It is based on a 2.5 shaft concept and boasts a high gear spread of maximum 7.89. On the one hand, this guarantees good driving off performance – even for heavy vehicles with large wheels – and facilitates, on the other hand, 'downspeeding', which is (fuel-saving) driving in high gears with low engine speed.

Development of the new gearbox focussed primarily on improving efficiency. 'Here we employed virtual development methods,' says Helmut Göbbels. 'This enabled us to design a completely new oil conduction system. Using a variety of oil conduction measures, we are able to achieve a uniform and optimum lubrication of gear wheels and bearings, reducing the amount of lifetime oil required to just 1.5 litres.' To further reduce friction, a bearing concept adapted to the gearbox was developed. The design used friction-minimised bearings with low-contact seals.

Material use and its distribution for the gearbox housing was also optimised. With the aid of a further virtual development tool, a strength- optimised housing structure could be designed. The new housing supports the noise requirements of today (avoidance of undesired secondary noises) and therefore ensures improved driving comfort through less audible and noticeable vibrations in the vehicle.

As is the case with many Volkswagen gearboxes, the MQ281 is produced in-house. Ramp-up is currently underway in the factories in Barcelona (Spain) and Córdoba (Argentina).

Volkswagen Passenger Cars operates in more than 150 markets worldwide and produces vehicles at more than 50 locations in 14 countries. In 2018, Volkswagen produced around 6.2 million vehicles, including bestsellers such as the Golf, Tiguan, Jetta and Passat. Volkswagen has a current workforce of 195,878 employees around the globe. Added to this are more than 10, 000 dealerships with 86,000 employees.

Volkswagen is forging ahead consistently with the further development of automobile production. Electric mobility, smart mobility and digital transformation of the brand are the key strategic issues for the future..

Photo credit: Volkswagen
posted on conceptcarz.com

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