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System Development for the Design of Gasoline Engine ECU
Technical Paper
912547
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Language:
English
Abstract
To reduce air pollution by the exhaust gases from automotives, it is necessary to control air/fuel ratio appropriate to engine operating condition, which can be achieved by adopting an electronic control system.
In this study we designed and fabracated PC-ECU (Personal Computer interfaced - Electronic Control Unit) to develop the automotive engine control system. PC-ECU is made to perform engine control with the application of various control logics instead of the C-ECU. As a first step to develop control logics we applied jump-ramp control to the real engine using a simple on/off O2 sensor and performed engine control by the use of PC-ECU. Also, we introduced a wide band O2 sensor instead of the simple on/off O2 sensor and adopted the PI control.
The results show that the control performance in case of using a wide band O2 sensor is much better than in case of using a simple on/off O2 sensor.
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Authors
- Kyoung Suk Park - Graduate School, Seoul National University
- Dae Young Lee - Graduate School, Seoul National University
- Sangken Kauh - Dept. of Mechanical Eng., Seoul National University, KOREA
- Sung Tack Ro - Dept. of Mechanical Eng., Seoul National University, KOREA
- Eung Seo Kim - Dept. of Mechanical Eng., Seoul National University, KOREA
Citation
Park, K., Lee, D., Kauh, S., Ro, S. et al., "System Development for the Design of Gasoline Engine ECU," SAE Technical Paper 912547, 1991.Also In
References
- Dalas D. Thiessen, F. Automotive Electronics and Engine Performance Reston Pub. Co., Inc./A Prentice-Hall Co. 1984
- Tune-up Manufacturers Institue Automotive Computer Control: emission and tune-up 1984
- Shulman, M. A. Hamburg, D. R. Throop, M. J. “Comparison of Measured and Predicted Three-Way Catalyst Conversion Efficiencies under Dynamic Air-Fuel Ratio Conditions,” SAE 820276
- Sasaki, T. Motoyoshi, Y. Yamamoto, E. Fukami, T. “A Karman vortex airflow sensor,” SAE 820322
- Kuo, B. C. Digital control systems, Holt Rinehart and Winston Inc. 1980