초록 ▼

The invention provides a process for dynamically adjusting the power of an electric driving unit of a vehicle which is supplied with electric energy by a fuel cell, the power of the fuel cell or the provided fuel cell current being controlled by means of the supplied air volume flow. The air volume

The invention provides a process for dynamically adjusting the power of an electric driving unit of a vehicle which is supplied with electric energy by a fuel cell, the power of the fuel cell or the provided fuel cell current being controlled by means of the supplied air volume flow. The air volume flow is adjusted by the rotational speed of a compressor, a desired rotational speed value being predetermined for the compressor based on an accelerator pedal demand. Simultaneously, based on the measured air flow volume, the actually available fuel cell current is determined and therefrom a corrected accelerator pedal demand is determined. During the starting operation, the accelerator pedal demand is supplied directly to the driving unit, whereas, at higher rotational speeds, it is limited by the corrected accelerator pedal demand.

대표청구항 ▼

[ What is claimed is:] [1.] Process for controlling power generated by a driving unit of an electric vehicle which is supplied with electric energy by a fuel cell, said process comprising the steps of:determining a desired value for fuel cell power based on an actual accelerator pedal demand value;c

[ What is claimed is:] [1.] Process for controlling power generated by a driving unit of an electric vehicle which is supplied with electric energy by a fuel cell, said process comprising the steps of:determining a desired value for fuel cell power based on an actual accelerator pedal demand value;continuously controlling power of said fuel cell based on said actual accelerator pedal demand value;measuring actual fuel cell power;determining a corrected accelerator pedal demand value based on said actual fuel cell power, which corrected accelerator pedal demand value corresponds to maximum fuel cell power provided for the driving unit;measuring rotational speed of said driving unit;when said rotational speed of the driving unit is below a predetermined threshold value, adjusting power consumption of the driving unit based on said actual accelerator pedal demand value; andwhen said rotational speed exceeds said predetermined threshold value, adjusting power consumption of the driving unit based on whichever is lower of the corrected accelerator pedal demand value and the actual accelerator pedal demand value.