A Review of Spark-Ignition Engine Air Charge Estimation Methods

Wang, Zhe; Zhu, Qilun; Prucka, Robert

doi:10.4271/2016-01-0620

Cited by 21 publications

(13 citation statements)

References 54 publications

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“…Compared to the MAF sensor, the MAP sensor, which is widely used on existing engine control systems, costs less and has a faster response time. There are already many research works on the air charge estimation to improve the accuracy at both transient and steady state [23]. In this work, the intake air observer is developed based on the MAP sensor using the speed-density formula, and one MAF sensor is used to calibrate the parameter at steady state.…”

Section: Observer-based Intake Air Estimationmentioning

confidence: 99%

Adaptive Air-Fuel Ratio Regulation for Port-Injected Spark-Ignited Engines Based on a Generalized Predictive Control Method

et al. 2019

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The accurate air-fuel ratio (AFR) control is crucial for the exhaust emission reduction based on the three-way catalytic converter in the spark ignition (SI) engine. The difficulties in transient cylinder air mass flow measurement, the existing fuel mass wall-wetting phenomenon, and the unfixed AFR path dynamic variations make the design of the AFR controller a challenging task. In this paper, an adaptive AFR regulation controller is designed using the feedforward and feedback control scheme based on the dynamical modelling of the AFR path. The generalized predictive control method is proposed to solve the problems of inherent nonlinearities, time delays, parameter variations, and uncertainties in the AFR closed loop. The simulation analysis is investigated for the effectiveness of noise suppression, online prediction, and self-correction on the SI engine system. Moreover, the experimental verification shows an acceptable performance of the designed controller and the potential usage of the generalized predictive control in AFR regulation application.

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Section: Observer-based Intake Air Estimationmentioning

confidence: 99%

Adaptive Air-Fuel Ratio Regulation for Port-Injected Spark-Ignited Engines Based on a Generalized Predictive Control Method

et al. 2019

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“…The mean value engine model (MVEM) is suitable for real-time simulation and it has acceptable accuracy for representing engine dynamics for the control application [12,13]. Additionally, MVEM has been shown to be quite accurate for the intake air mass observer design [2]. It describes the physical engine dynamics on the time scale of several engine events without the cycle-to-cycle characteristics.…”

Section: Mathematical Description Of the Intake Air Pathmentioning

confidence: 99%

“…However, the dramatic change of intake dynamics and parameter varying makes a challenging problem for the traditional air estimation. Many approaches have been proposed in the literature on the air charge estimation to improve the accuracy at both the transient and steady state [2,3]. Hendricks [4] has emphasized that the pressure transducer response time existed and it was impossible to follow rather slow throttle angle transients and proposed the necessary of intake air observer to eliminate the sensor response characteristic.…”

Section: Introductionmentioning

confidence: 99%

Intake Air Mass Observer Design Based on Extended Kalman Filter for Air-Fuel Ratio Control on SI Engine

Meng

Luo

et al. 2019

Energies

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Air-fuel ratio (AFR) control is important for the exhaust emission reduction while using the three-way catalytic converter in the spark ignition (SI) engine. However, the transient cylinder air mass is unable to acquire by sensors directly and it may limit the accuracy of AFR control. The complex engine dynamics and working conditions make the intake air estimation a challenge work. In this paper, a novelty design of intake air observer is investigated for the port-injected SI engine. The intake air dynamical modeling and the parameter fitting have been carried out in detail. Extended Kalman Filter (EKF) has been used to optimize the instantaneous cylinder charge estimation and minimize the effort of pump gas fluctuation, random noise, and measurement noise. The experiment validation has been conducted to verify the effectiveness of the proposed method.

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“…Traditionally, Mass Air Flow (MAF) sensors have been used on the intake circuit of the engine to estimate the air flow into the intake manifold and a closed-loop strategy is used to control the A/F ratio utilizing lambda sensors in the exhaust manifold [4]. However, there are several drawbacks of using MAF sensors.…”

Section: Motivationmentioning

confidence: 99%

“…Firstly, there is a response delay in the measurement of air flow into the manifold. Since the air flow meter is mounted in the upstream of the intake path, to improve the air charge estimation in transients, dynamics of intake manifold and pipes must be considered [4].…”

Section: Motivationmentioning

confidence: 99%

Air Charge Estimation for an Si Engine Using in-Cylinder Pressure Sensor

Yazdani¹

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A Review of Spark-Ignition Engine Air Charge Estimation Methods

Cited by 21 publications

References 54 publications

Adaptive Air-Fuel Ratio Regulation for Port-Injected Spark-Ignited Engines Based on a Generalized Predictive Control Method

Adaptive Air-Fuel Ratio Regulation for Port-Injected Spark-Ignited Engines Based on a Generalized Predictive Control Method

Intake Air Mass Observer Design Based on Extended Kalman Filter for Air-Fuel Ratio Control on SI Engine

Air Charge Estimation for an Si Engine Using in-Cylinder Pressure Sensor

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