Abstract In the past, type approval of road vehicles with regard to production pollutants was carried out exclusively in form laboratory tests. Laboratory tests determined course vehicle’s driving cycle and methodology for quantifying depending on distance passed. The revision EU legislation 2016 brought changes field approval, particular a change an additional test real drive emission. paper d...

With the increasing pressure on energy and environment, vehicle brake recovery technology is increasingly focused reducing consumption effectively. Based magnetization effect of permanent magnets, this paper presents a novel type magnetic coupling flywheel storage device by combining with technology. As high-efficiency device, it has advantages low consumption, vibration, noise easy maintenance...

Hybrid electric vehicle (HEV) control strategy is a management approach for generating, using, and saving energy. Therefore, the optimal control strategy is the sticking point to effectively manage hybrid electric vehicles. In order to realize the optimal control strategy, we use a robust evolutionary computation method called a “memetic algorithm (MA)” to optimize the control parameters in par...

This paper presents a numerical study of the effect transmission configuration on energy consumption an electric vehicle. The first part this is related to vehicle simulation model that takes into consideration resistances such as aerodynamic, rolling and inertial resistance well traction force. was then validated by means acceleration time, from 0 100 km/h in case single-speed gearbox. Vehicle...

Vehicle driving cycles have complex characteristics, but there are few publicly reported methods for their quantitative characterization. This paper innovatively investigates multifractal characteristics using the fractal theory to characterize properties, laying foundation applications such as vehicle cycle feature identification, energy management strategies (EMS), and so on. To explore scale...

This study provides a viable path to save energy by means of e-commerce development. Taking the national demonstration cities (NEDC) pilots policy implemented in China as quasi-natural experiment, based on city panel data from 2006 2019, this applies multi-period difference-in-difference (DID) method evaluate effect NEDC saving pilot cities. The empirical results suggest that obviously contribu...

A driving cycle is a record intended to reflect the regular use of given type vehicle, presented as speed profile recorded over certain period time. It used for assessment engine pollutant emissions, fuel consumption analysis and environmental certification procedures. Different cycles are used, depending on region world. In addition, drive by car manufacturers optimize vehicle drivelines. The ...

In this study, a model of pre-transmission parallel hybrid vehicle was created in MATLAB/Simulink environment. A torque control strategy has been developed for the on model. The vehicle's is provided by fuzzy logic and conventional rule-based strategies. strategies have based four input parameters: accelerator brake pedal position, battery state charge operating mode electric motor. regenerativ...