Dynamic Reserve Energy Storage for Hybrid Vehicle Fuel Economy Improvement

2015 ◽  
Author(s):  
Deepak Sharma ◽  
Sreenath K Reghunath ◽  
Ashwini Athreya
Keyword(s):  
Energy Storage ◽  
Fuel Economy ◽  
Hybrid Vehicle ◽  
Fuel Economy Improvement

Fuel Efficiency Comparison Between a Conventional and a Hybrid Vehicle Using a Model Based on MATLAB/Simulink and ADAMS

2008 ◽  
Author(s):  
Brian S. Fan ◽  
Amir Khajepour ◽  
Mehrdad Kazerani
Keyword(s):  
Fuel Economy ◽  
Model Simulation ◽  
Hybrid Vehicle ◽  
Published Data ◽  
Simulation Platform ◽  
Vehicle Model ◽  
Control Logic ◽  
Matlab Simulink ◽  
Conventional Vehicle ◽  
Fuel Economy Improvement

Recent development of hybrid vehicles in the automotive industry has demonstrated the capability of reducing fuel consumption while maintaining vehicle performance. The purpose of this paper is to present a hybrid vehicle model created in MATLAB and ADAMS, and its fuel economy improvement over a conventional vehicle system. The hybrid vehicle model discussed in this paper utilizes the Honda IMA (Integrated Motor Assist) architecture. The powertrain components’ power output calculation and the control logic were modeled in MATLAB/Simulink, while the mechanical inertial components were modeled in ADAMS. Communication between MATLAB and ADAMS was established by ADAMS/Controls. The vehicle model created using MATLAB and ADAMS provides a more accurate, more realistic, and a highly flexible simulation platform. In order to evaluate the accuracy of the MATLAB/ADAMS hybrid vehicle model, simulation results were compared to the published data of ADVISOR. Fuel economy of hybrid and conventional vehicle models were compared using the EPA New York City Cycle (NYCC) and the Highway Fuel Economy Cycle (HWFET). The hybrid vehicle demonstrated 8.9% and 14.3% fuel economy improvement over the conventional vehicle model for the NYCC and HWFET drive cycles, respectively. The MATLAB/ADAMS vehicle model presented in this paper, demonstrated the fuel economy advantage of the hybrid vehicle over the conventional vehicle model, while offering a simulation platform that is modular, flexible, and can be conveniently modified to create different types of vehicle models.

Energy-Based Modeling of Alternative Energy Storage Systems for Hybrid Vehicles

2011 ◽  
Author(s):  
J. McDonough ◽  
K. Jebakumar ◽  
F. Chiara ◽  
M. Canova ◽  
K. Koprubasi
Keyword(s):  
Energy Storage ◽  
Fuel Economy ◽  
Alternative Energy ◽  
Storage Systems ◽  
Storage System ◽  
Energy Storage System ◽  
Hybrid Vehicles ◽  
Energy Storage Systems ◽  
Fuel Economy Improvement

Alternative energy storage systems (AESS) are receiving considerable interest today for low-cost mild-hybrid vehicles where the electrical system is substituted with mechanical or hydraulic energy storage. As these technologies are being explored, simulation tools become helpful to predict the behavior of the energy storage system during vehicle use, as well as to conduct comparative studies evaluating the energy and power density, fuel economy improvement, system weight and costs. This paper presents an energy-based modeling approach to characterize the low-frequency dynamic behavior of alternative energy storage systems for hybrid vehicle applications, with the ability to predict the energy flows and sources of energy loss during driving operations. The model aims at evaluating the potential, in terms of efficiency and fuel economy improvement, offered by non-electrified energy storage systems, such as mechanical (flywheels) or hydraulic (accumulators). The modeling tool developed is able to provide a characterization of the performance of each of the two systems starting from a characterization of the components energy conversion behavior. The paper includes a simulation study where the performance of a mechanical and hydraulic energy storage system are compared on a forward-oriented hybrid vehicle simulator, with the objective of characterizing and comparing the energy recuperation process and the energy efficiency of the two systems.

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