Abstract

Key subsystems, such as driving resistance, component performance, and energy management strategy, determine the power performance and energy consumption of hybrid electric vehicles. Qin Plus performs excellently in fuel consumption due to its low driving resistance, high thermal efficiency of the engine, and multi-factor multi-mode energy management strategy. This article aims to explain the outstanding energy consumption of DMi vehicles by analyzing the driving resistance, component parameters of Qin Plus and introducing the drive modes selection and vehicle energy management strategy through multi-system modeling and simulation. The ultra-low fuel consumption of 3.8 L is obtained under the NEDC driving cycle and evaluated by the corresponding experiment.

Highlights

  • PHEVs (Plugin recognized as as having a vital rolerole in the (Pluginhybrid hybridvehicles) vehicles)are aregenerally generally recognized having a vital in new energy vehicle industry for their better power performance thanthan traditional fuelfuel vethe new energy vehicle industry for their better power performance traditional hicles and longer vehicles and longerdriving drivingrange rangethan thancurrent currentpure pure electric electric vehicles

  • A practical strategy to optimize the energy consumption with the constraints by considering drivability, charge sustaining capability, and NVH is employed for the DMi vehicles, which may provide an insight into how to deal with the energy management problem from the perspective of vehicle performance integration

  • To better specify how the systematic resistance optimization works on DMi vehicles, we tend to figure out details by analyzing EV mode energy consumption

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Summary

Introduction

PHEVs (Plugin recognized as as having a vital rolerole in the (Pluginhybrid hybridvehicles) vehicles)are aregenerally generally recognized having a vital in new energy vehicle industry for their better power performance thanthan traditional fuelfuel vethe new energy vehicle industry for their better power performance traditional hicles and longer vehicles and longerdriving drivingrange rangethan thancurrent currentpure pure electric electric vehicles. Strategy areare the the major subsystems that component performance, performance,and andenergy energymanagement management strategy major subsystems that determine the power performance and energy consumption the vehicle a determine the power performance and energy consumption of theofvehicle with awith fixed fixed powertrain structure. The neo-generation hybrid system of BYD, DMi

November
Resistance Decomposition and EV Mode Energy Consumption Analysis
Driving
Component
Driving Modes Selection and Energy Management
Qinsustaining
Findings
Conclusions

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