Volkswagen New Gearbox Enables CO2 Savings

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.

The trend towards vehicles from the SUV segment with large-diameter wheels places high demands on the gearbox. Mr Helmut Göbbels, Head of Manual Gearbox and Four-Wheel Drive Development at Volkswagen said that “With the MQ281, we have developed a highly efficient manual gearbox that reliably meets these demands – and is soon to be introduced into a number of vehicle classes in the volume segment.”

The MQ281 has a torque spectrum of 200 to 340 newton metres, which means it completely or partially supersedes the current Volkswagen gearbox designs with the internal designations MQ250 and MQ350 respectively.

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.

Source : Strategic Research Institute
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