Abstract
The article proposes to evaluate the efficiency of an autonomous vehicle, taking into account not only the energy consumption for motion, but also the time of motion, i. e. both factors — efficiency and performance — should be taken into account. As a criterion for evaluating the efficiency of vehicles, authors propose the multiplication of efficiency on performance — the energy efficiency indicator (EEI). The best will be the vehicle with the highest EEI. The indicator should be calculated according to the specified technical characteristics of the vehicle laid down in the technical specifications. This criterion is suitable both for the evaluation of the vehicle during the design and during operation. At the same time, it is possible to evaluate and compare the EEI of technical vehicles not only of railway transport. The article presents the criterion values for water, rail and air transport. Proposed criterion makes it possible to evaluate the change in vehicle efficiency over time due to technical progress. Since 1953, the energy efficiency of a diesel locomotive has increased almost 3 times. To calculate the operational energy efficiency, it is necessary to obtain data on the actual performance of the vehicle. On railway transport, this is data on train work in t·km, speed and fuel consumption. The EEI assessment based on operating data will show how correctly the organization of vehicle operation is built, how non-stationary modes of the power plant and specific modes of traction influence the overall performance of the vehicle, how well the vehicle is selected for these operating conditions.
Highlights
The article proposes to evaluate the efficiency of an autonomous vehicle
authors propose the multiplication of efficiency on performance
best will be the vehicle with the highest efficiency indicator (EEI)
Summary
В качестве критерия оценки эффективности автономного транспортного средства предлагается произведение коэффициента полезного действия на производительность. Критерий пригоден для оценки транспортного средства как при проектировании, так и в процессе эксплуатации. Оценка эффективности транспортных средств должна отражать не только расход энергии на перемещение, но и затраченное на него время, т. Критерием оценки эффективности транспортных средств могло бы быть произведение коэффициента полезного действия на производительность:. Этот критерий пригоден как при оценке транспортного средства при проектировании [11], так и в процессе эксплуатации. При этом появляется возможность оценить и сравнить ИЭЭФ технических транспортных средств не только для железнодорожного транспорта. Предлагаемый критерий позволяет оценить изменение эффективности транспортного средства во времени вследствие технического прогресса. При выборе КПД силовой установки в качестве критерия оценки его эффективность снижается в 1,4 раза
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