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Experimental comparative studies of injection systems

Dziubiński M., Drozd A., Siemionek E., Plich M.

Prace Naukowe Politechniki Warszawskiej. Transport

2016

z. 112

79--88

The maintenance of modern means of transport requires an assessment of energy consumption. This paper presents a methodology for testing electric wheelchair. The analysis of vehicle movement and the knowledge of forces affecting the vehicle are necessary to determine the components of energy balance, such as kinetic energy, energy of rolling resistance and losses in the power transmission system. The study was conducted for three different driving cycles. The motion parameters for each of the driving cycles were analyzed. The control electronics in electric wheelchair drives converts the commands of the driver: direction, accelerator, brake pedał position, into the corresponding control commands input to the power semiconductors, while at the same time observing specified limits: current, voltage, motor speed. The paper describes a research method for testing a wheelchair eąuipped with electric engine. The tests were conducted for specified operating conditions involving the following constrained motion on a horizontal road section. The effect of selected operating parameters on the work of the electric drive system was investigated. The paper also gives examples of the results if the conducted road tests of the wheelchair. The object of the tests was the electric wheelchair. The vehicle is suitable for transporting people weighing 80 kg. Two electric engines powered by batteries with the voltage of 24 V were used for driving the vehicle.