Browse Publications Technical Papers 2006-01-1501
2006-04-03

Research and Analysis of ISG Belt-drive System for Idling Stop System 2006-01-1501

To enable a belt-driven Integrated Starter Generator (ISG) to be used in an idle-stop system, the belt system must be capable of both driving the accessories and of starting the engine. Conventional belt systems required a higher tension setting to accomplish this, and the associated increase in friction opposed the achievement of better fuel economy.
In this research, an auto-tensioner with a contraction suppression function that utilizes the incompressibility of fluid as well as a belt system that enables the auto-tensioner to be optimally located were proposed. The behavior of the belt system was measured in detail by testing, and the cause of the fluctuation of the belt tension was clarified by analysis. A method of controlling the ISG torque to flatten out tension fluctuations was devised, and its effectiveness was confirmed by simulation and testing. From the overall results of the research, a belt system that does not require a high tension setting was realized.

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