Both keys serve as the engine support for individual regulation.
In in principle Dolphin drive system is simple and fully automatic. The automatic engine controller is programmed to constantly monitor your pedal frequency. In accordance with a function it computes engine performance appropriately, which corresponds to empirical values of many years of experience.
Dolphin is the only e-Bike in that the drive can also be individually regulated according to driver's wishes and or stamina. With the PowerUp and the PowerDown key the pedal frequency and/or the engine performance can be changed. Both keys can be use during driving and/or Standing.
The PowerUP key changes the relationship between pedal frequency/engine performance. After unique pressing of the key an appropriate engine performance can be reached while pedalling or not. Or when press again while continuous pedalling a stronger engine performance is achieved. The upward arrow key symbolizes more engine support. This key can be pressed also several times. It is indicated by an acoustic signal that the relationship pedal frequency/engine performance is changed around a stage by 4 revolutions per minute.
Example: Before pressing the power UP key the maximum speed of the engine (full power) is already reached with a pedal frequency by 60 U/min.; When press once it becomes with 56 U/Min. Pressed twice with 52 U/Min. Maximum perfromance is reached.
Note: By the PowerUp key more achievement is course-regulated, arrange increased engine performance with low pedalling frequencies you have a feeling to advance faster. This however do not apply to higher pedalling frequencies. The maximum speed of the engine, and thus the maximum speed remain unchanged.
It changes the relationship pedalling frequency/engine performance in way contrary to the power UP key. When PowerDown key is pressed once or several times, the maximum speed of the engine can only by reached with higher pedalling frequencies. This has different effect in regard that with pedalling frequency by a usual 60 U/Min only 70% or 80% of the maximum speed of the engine are reached.
driving with increased achievement by operation of the power UP key increased logical-proves the energy consumption; this again reduces the range. By in or you can reduce repeated operation of the power down key the portion of engine performance and thus the energy consumption.
Driving with PowerUp Key logically increased the energy comsumption, thus reduces the range in kilometer.
Through driving with PowerDown key by pressing it once of several times and pedalling with a higher frequency you are reducing the energy consumption and increasing the range in kilometer.