Fuzzy Auto-Tuning Techniques Applied to Air-Fuel Ratio Control on a Lean Burn Engine

Li Wang; Wei Yu Zhang; Yi Qiang Pei

doi:10.4028/www.scientific.net/AMM.127.434

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 127Fuzzy Auto-Tuning Techniques Applied to Air-Fuel...

Fuzzy Auto-Tuning Techniques Applied to Air-Fuel Ratio Control on a Lean Burn Engine

Abstract:

Lean burn technology shows great potential in meeting the more strict emission regulation and realizing high efficiency and clean combustion. In this paper, a feedforward-feedback control system of the air-fuel ratio controlling for lean burn engine is presented. A fuzzy parameter self-tuning PID control scheme is used as feedback to balance the control accuracy and system complexity. Some lean burn engine air-fuel ratio control experiments are given to show the efficiency of the proposed method. With the proposed control system, the the actual engine air-fuel ratio can quickly track the desired air-fuel ratio when the engine load changes suddenly regardless of whether the target air-fuel ratio is 20 or 14.6. So, the fuzzy parameter self-tuning PID controller has excellent control performance under transient condition of lean burn engine.

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Periodical:

Applied Mechanics and Materials (Volume 127)

Pages:

434-438

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.127.434

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Online since:

October 2011

Authors:

Li Wang, Wei Yu Zhang, Yi Qiang Pei

Keywords:

Air-Fuel Ratio, Fuzzy Auto-Tuning, Lean Burn Engine

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