/nginx/o/2021/12/30/14285451t1hf439.jpg?fit=%2C&ssl=1 "What is recuperation and how does it become cheaper to use an electric car – Garage – Car")
Regarding recuperation, Tymoshko’s recommendation for those who have recently switched to an electric car is to start with the gentlest or lightest energy recovery mode, as it resembles the internal combustion car rolling in neutral or, if driving with an automatic transmission, rolling with the accelerator pedal released. Gradually getting used to the system, the recovery intensity can be adjusted to typical driving situations and your own style.
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There can be no question of ‘right’ and ‘wrong’, but I think all motorists can be divided into two groups: those who take driving with interest and enthusiasm and those who take it from point A to point B. It and subjectively acceptable dynamics usually also determine how actively a rider uses the opportunity to change modes, ”says Tom Timoshko.
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Oskars Irbītis, a lecturer at the Department of Automotive Engineering at the Faculty of Mechanical Engineering, Transport and Aeronautics of Riga Technical University (RTU), points out that the amount of energy recovered during regenerative braking depends on the proportion of braking between the electric motor and the car’s service brakes.
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“Emergency braking recovers the least amount of energy, as virtually all deceleration is provided by the service brakes. When the brake pedal is partially depressed, the car is braked by an electric motor. In quite a number of situations, it is possible to use up to 80 percent of kinetic energy, and the service brake is basically used only to stop the car completely, ”explains the RTU lecturer.
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Works especially well with cruise control
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O. Irbītis emphasizes that although the energy carrier is different, the laws of physics do not change, and most of the driving principles remain the same. His recommendation for those who want the maximum recovery effect is to brake with the brake pedal partially depressed and generally avoid a sharp reduction in speed. The RTU lecturer explains that charging the battery depends on the amount of kinetic energy, ie how intense the deceleration is and how long it lasts. Another aspect that affects the recovery effect is the battery settings.
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Tymoshko, on the other hand, urges attention to another modern technology that helps increase the efficiency of recuperation, adaptive cruise control. In electric models, it can be useful both in the city and on the road, as it automatically brakes the car according to the speed of the vehicle in front and recovers automatically accordingly.
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O. Irbītis believes that regenerative braking can be effective by applying both driving assistance systems and good driving skills. According to him, both options are suitable and the choice depends on the driving situation.
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By using the terrain and knowing the road, an experienced driver can achieve the lowest possible energy consumption, but this requires attention and can affect concentration over a long journey. This is especially true in monotonous stages, where non-fatigue-free technologies ultimately prove superior.
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By running on horizontal roads where the landscape does not change, the cruise control maintains the set speed precisely, and in this way it is possible to avoid unwanted accelerations, which, of course, affect energy consumption, ”says the automotive engineer.
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