This content is not included in your SAE MOBILUS subscription, or you are not logged in.
A Stand-Alone Charging Management System to Improve Fuel Economy, Based on an Algorithm of Estimating Vehicle Motion
Published October 20, 2008 by Convergence Transportation Electronics Association in United States
Annotation ability available
Event: Convergence 2008
Increased interest in global warming issues requires rapid improvements in reduction of CO2 emissions. The automotive industry is placing high importance on improving fuel economy performance across their entire product lines. Charging Management System is a necessary element towards fuel economy improvement.
Many of today's charging management systems perform at least two important functions: improving efficiency based on vehicle motion, and detecting battery state of charge. These systems become more complicated as more components (i.e. generators, current sensors and ECU) and software are added. Therefore, it is difficult to develop charging management systems for an entire product line and difficult to retrofit the system for vehicles already in production.
A stand-alone charging management system solves these issues. This system is independent of the other vehicle systems. The software for improving fuel economy is installed in the generator or current sensor. These components can be connected through digital communication to gather information from each other, and be retrofitted to the vehicle. A stand-alone charging management system controls regeneration during deceleration. This system estimates vehicle motion by alternator speed.
|Technical Paper||Low Cost Battery Sensor Algorithm|
|Technical Paper||Simulation Tool Chain for the Estimation of EMC Characteristics of ECU Modules|
|Technical Paper||A Truck and Bus Chassis Dynamometer Developed for Fuels and Lubricants Research|
CitationAsada, T. and Maeda, S., "A Stand-Alone Charging Management System to Improve Fuel Economy, Based on an Algorithm of Estimating Vehicle Motion," SAE Technical Paper 2008-21-0045, 2008.
- Japan Automobile Dealers Association http://www.jada.or.jp/contents/data/used/index01.php
- Automobile Inspection & Registration Information Association http://www.airia.or.jp/number/index2.html
- Obayashi K. et al. “Optimal Control of Plural Power Supply Systems with Vehicle Electric Power Flow Management System (VEF)” SAE- 2006-01-1223