Authors: Paljoo Yoon, Myoungho Sunwoo
Addresses: School of Mechanical Engineering, Hanyang University, 17 Haengdang-Dong, Sungdong-Ku, Seoul 133-791, Republic of Korea. School of Mechanical Engineering, Hanyang University, 17 Haengdang-Dong, Sungdong-Ku, Seoul 133-791, Republic of Korea
Abstract: A control-oriented nonlinear dynamic SI engine model is developed to represent a spark-ignited engine over a wide range of operating conditions. The model includes intake manifold dynamics, fuel film dynamics, and engine rotational dynamics with transport delays inherent in the four-stroke engine cycles. The model is mathematically compact enough to run in real time, and can be used as an embedded model within a control algorithm or an observer. The model is validated with engine-dynamometer experimental data in steady and transient operating conditions, and its accuracy over a wide operating range is proved to be within ±5% Also, the model can be used in the design and development of a powertrain controller.
Keywords: engine control system; MBT (minimum spark advance for best torque); intake manifold pressure dynamics; fuel film dynamics; engine rotational dynamics; AFR (air-to-fuel ratio).
International Journal of Vehicle Design, 2001 Vol.26 No.2/3, pp.277-297
Published online: 15 Aug 2003 *Full-text access for editors Access for subscribers Purchase this article Comment on this article