Driving cycles and load profiles

There are no standardised driving cycles, like those familiar from the on-road environment, to enable mobile machinery to be compared. General standards are hardly possible because of the varying operating environments and applications for mobile machinery. Existing standardised profiles for certain devices (e.g. so-called Y-profile for wheel loaders and forklift trucks) usually provide only a very rough guide. The key factors are the alternating cycles between acceleration, operating and braking phases as shown in load profiles.

Low proportion of full load: high potential for reducing consumption using the hybrid principle

Relieving load on the combustion engine by covering load peaks with the electric motor (shown in the red area).
In the example profile: very good ratio between output peaks to be covered (battery discharging) and regeneration phases (battery charging).
Objective: at least equalisation of battery charge at the end of the cycle.

High proportion of full load: lower potential for reducing consumption

The load profile shown here is not suitable for hybridization because of the long periods under full load.

Key:

Battery discharging phase (supported by HYPERION)
Battery charging phase (by means of intelligent charging control or recuperation)