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Development of the Hybrid/Battery ECU for the Toyota Hybrid System
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Abstract
For energy saving and global warming prevention, Toyota has developed Toyota Hybrid System (THS) for mass-produced passenger cars, which achieves drastic improvement in fuel efficiency and reduction in exhaust emissions compared to conventional gasoline engine cars.
The THS has two motive power sources which engage depending on driving conditions. It's power is supplied either from an engine (controlled by the engine ECU) or an electric motor (controlled by the motor ECU) which is powered by a high-voltage battery (monitored by the battery ECU). These ECUs are controlled by a hybrid ECU. Each ECU has been developed with a fail-safe system in mind, to ensure driver safety in case of vehicle breakdowns.
Among these ECUs, this paper reports particularly on the newly introduced ECUs: hybrid ECU and battery ECU. In the development of these ECUs, special attention was focused on fail-safe performance.
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Nagasaka, A., Nada, M., Hamada, H., Hiramatsu, S. et al., "Development of the Hybrid/Battery ECU for the Toyota Hybrid System," SAE Technical Paper 981122, 1998, https://doi.org/10.4271/981122.Also In
References
- Abe Shinichi Sasaki Shoichi Matsui Hideaki Kubo Kaoru “Development of Hybrid System for Mass Productive Passenger Car,” JSAE 9739543 1997
- Hirose Katsuhiko Takaoka Toshifumi Ueda Tatehito Kobayashi Yukio “The New High Expansion Ratio Gasoline Engine for the TOYOTA Hybrid System,” JSAE 9739552 1997