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Engine control system using a cylinder pressure sensor

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4 Author(s)
Y. Hata ; Nissan Motor Co. Ltd., Central Eng. Labs., Yokosuka, Japan ; K. Ikeura ; T. Morita ; T. Abo

Individual cylinder combustion control systems using a cylinder pressure sensor have a system already been introduced to realise a system, highly tolerant of the variability of engine components, fuel quality and environmental conditions. The paper deals with such an application of a cylinder pressure sensor to air/fuel ratio control, which is to control air/fuel ratio to the lean limit of engine stability. To detect the engine stability limit, a statistical signal processing method was applied to the detected peak pressure crank angle position theta /sub pmax/. By using this method, this system needs only relative cylinder pressure value to detect theta /sub pmax/, hence a practical piezoelectric type washer transducer was good enough for this application.<>

Published in:

IEE Proceedings D - Control Theory and Applications  (Volume:136 ,  Issue: 2 )