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The performance of fuel economy and emissions reduction of hybrid electric vehicles (HEVs) strongly is affected by the target driving cycle. So, the characteristics of the driving cycle play an important role in the hybrid powertrain matching and the control strategy designing. However, the mathematic description method about the characteristics of the driving cycle has been not studied before. The mathematic model is established to describe the characteristics of the driving cycle in this paper, which provide a useful guidance to design a hybrid electric vehicle that operates efficiently under the target driving cycle. Introduction The problems derived from the climate change have become more and more serious, and promote the applications such technologies as saving energy and reducing emissions in the modern vehicle fast. Compared with the conventional vehicles, hybrid electric vehicles (HEVs) have been paid great attentions due to its superiority in saving energy and reducing emissions. The performance of HEV is largely affected by the characteristic of the target driving cycle [1,2,3]. So it plays an important role in the hybrid powertrain matching and the control strategy designing. However, the mathematic description method about the characteristics of the driving cycle has been not studied before. Herein, the mathematic model is established to describe the characteristics of the driving cycle.

Mathematic Description Method of Hybrid Electric Vehicles’ Driving Cycle