“emKERS” stands for "electro-mechanical Kinetic Energy Recovery System’, with which the speed of a steel flywheel is regulated by a 15 kW 48V machine and a power splitting planetary gear wheel system.

Getting the most out of 48V

Thanks to this advanced development by Punch Powertrain, a high peak power is possible, despite the low electric motor voltage of only 48V. The unit is therefore a cost-efficient and very powerful hybrid powertrain axle, which combines the best of electrical and mechanical hybrids.

On the rear axle

The emKERS unit can be mounted on the rear axle of a front wheel-driven car. This addition gives the car extra peak capacity, which increases the driving pleasure and is useful when bypassing, for example. With emKERS the car gets a certain level of All Wheel Drive capabilities while this addition also enables fuel savings  as much as 15% without altering the front ICE powertrain.

Up to 60 kW of power

Depending on the sizing of components and gear ratios, the emKERS unit delivers up to 60 kW of peak power capacity. As a result, the battery size of the system can be reduced, since the flywheel absorbs most of the energy peaks. Furthermore, the ICE can be downsized using a larger but slower turbo to retain power requirement. The dynamics of the slower turbo are supported by the high and instant peak dynamics of the emKERS. The combination of hybridization and engine downsizing can increase the total fuel saving up to 20%.

A cost-effective powerful hybrid 

emKERS is a cost-efficient drive unit that saves up to 20% of fuel and offers the end customer increased driving pleasure.