Abstract
With focus on NVH performance, this paper studies the range extender system control strategy such as the initial start speed, operating points, speed up and down control method between operating points of the range extender, etc. At the same time, the confirmation of the operating points of the range extender based on the full vehicle frequency distribution and vibration and noise level of key points (seat rail, driver’s inner ear) was performed. Finally, we conducted objective test and compared the test data with benchmark vehicles.
Highlights
New energy vehicles have become the development trend in the field of modern transportation
The driving range anxiety has become the key point of pure electric vehicles due to the low energy density of pure electric vehicles power batteries and the short life of batteries, and the range extender can solve this problem in terms of overall power performance, fuel consumption and NVH performance [1]
We need to consider the difference of power requirement between range extender and internal combustion engine(ICE) of Conventional fuel vehicle [2, 3] that should be fully considered in the early stage of range extender system development and system NVH target setting and need to consider the NVH performance of range Electric Vehicle (ReEV) with range extender under different modes [4,5,6]
Summary
New energy vehicles have become the development trend in the field of modern transportation. The ReEV can realize pure electric and extended range operation mode. We need to consider the difference of power requirement between range extender and internal combustion engine(ICE) of Conventional fuel vehicle [2, 3] that should be fully considered in the early stage of range extender system development and system NVH target setting and need to consider the NVH performance of ReEV with range extender under different modes [4,5,6]. NVH performance always different of operation mode of ReEV, Pure electric mode are always quieter than mode powered by Range extender, the transition from the EV mode to Range extender mode can cause significant NVH issues [7,8,9,10]
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