A Model for Residual Gas Fraction Prediction in Spark Ignition Engines

Giansetti, P.; Perrier, C.; Higelin, Pascal; Chamaillard, Yann; Charlet, Alain; Couet, S.

doi:10.4271/2002-01-1735

Cited by 23 publications

(7 citation statements)

References 4 publications

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“…The residual gas rate was, in addition, needed to achieve these calculations. An estimate of this rate, computed using calculations taken from a recent work performed by Giansetti et al [35], obtained for an engine with similar characteristics, was found to be 30%. The maximum mean in-cylinder temperature is found around 1700 K. This relatively lowtemperature value can be explained by the extra heat exchange throughout the engine walls, and especially through the elongated piston (providing a direct exchange of the in-cylinder heat with the room air).…”

Section: Fired Engine Experimentsmentioning

confidence: 97%

Nitric oxide detection inside the cylinder of an SI engine by direct UV absorption spectroscopy

Trad¹,

Higelin²,

Mounaïm‐Rousselle³

2005

Optics and Lasers in Engineering

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Section: Fired Engine Experimentsmentioning

confidence: 97%

Nitric oxide detection inside the cylinder of an SI engine by direct UV absorption spectroscopy

Trad¹,

Higelin²,

Mounaïm‐Rousselle³

2005

Optics and Lasers in Engineering

Self Cite

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“…Although much research on the detection of the transient parameters of IC engines has been conducted, until now the published research has mostly focused on a few engine performance parameters, such as the intake mass flow rate, the AFR and the RGF. 25–28 There have been few publications in which more than three parameters have been simultaneously studied, and no systematic study on the working processes of the IC engine in the operating state of the vehicle. At present, there are still two major problems that need to be solved in the research field of the transient performance of IC engines.…”

Section: Introductionmentioning

confidence: 99%

A hybrid method of tests coupled with simulations used to detect the working processes of an automotive engine from cycle to cycle in transient conditions

Yuan

Liu

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part D:

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To improve the actual performance of an automotive engine, an approach consisting of dynamic signal measurements coupled with gas dynamics–thermodynamics process simulations is proposed; this is used to detect the working processes of an automotive engine from cycle to cycle in transient conditions. Based on the working principles and the mathematical models of the proposed detection method, corresponding software was developed, and the reliability of this approach was validated on an automotive engine. Automotive road tests were conducted, and various transient parameters of the engine were successfully detected from cycle to cycle by using the developed software. On this basis, the variations in the influencing factors of and the interactions between various engine parameters were analysed. The results showed that the ignition timing has a strong effect on the indicated thermal efficiency. Where there is an unnecessary delay in the ignition timing, there is a decrease in the indicated thermal efficiency. The pumping mean effective pressure is approximately equal to the difference between the exhaust gas pressure and the intake gas pressure for a low to medium load, but it is much higher than the pressure difference and undergoes great fluctuations in the high-speed and high-load operating regions. Both the presented approach and the research results are significant for improving the engine performance in transient conditions.

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“…Control-oriented residual gas calculation models have been developed using several different semi-empirical correlations. 6–12 While some of these models may not have originally been intended for real-time control, their computational complexity is of a level that they have now become feasible for implementation in modern engine controllers. These correlations utilize either standard engine sensors (e.g.…”

Section: Introductionmentioning

confidence: 99%

Control-oriented residual gas mass prediction for spark ignition engines

Wang

Prucka

et al. 2014

International Journal of Engine Research

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Trapped residual gas mass is an important physical factor that influences combustion phasing and variation, fuel consumption, and air mass prediction for fuel control. There are currently no mass-production sensors available to directly measure in-cylinder residual gas mass, so prediction models must be utilized for control. Residual gas content of the cylinder can be difficult to directly model for control purposes because it involves complex flows during gas exchange that are driven by fluctuating pressures in the intake and exhaust systems. Capturing these effects in an accurate manner generally requires high model complexity and computational effort outside of the capability of most production intent engine controllers. This paper presents a semi-physics-based control oriented residual gas mass (RGM) prediction method. The RGM model is based on Bernoulli’s principle and considers engine operating conditions, valve timing and geometry, and piston motion effects. Moreover, to more accurately estimate the burned gas back flow, this model captures gas wave dynamic effects in intake and exhaust manifold pressures. The model is described in detail and its prediction accuracy is compared to that of a high fidelity simulation that utilizes experimentally measured crank angle resolved intake, exhaust, and cylinder pressures as boundary conditions. The new model is incorporated into a rapid-prototype control system for real-time operation during transient and steady-state engine operation. The results show that the proposed RGM model provides real-time predictions within 1.9-2.3% RGF, creating relative estimation errors in the range of 10-24%, and is capable of running real-time for engine control.

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A Model for Residual Gas Fraction Prediction in Spark Ignition Engines

Cited by 23 publications

References 4 publications

Nitric oxide detection inside the cylinder of an SI engine by direct UV absorption spectroscopy

Nitric oxide detection inside the cylinder of an SI engine by direct UV absorption spectroscopy

A hybrid method of tests coupled with simulations used to detect the working processes of an automotive engine from cycle to cycle in transient conditions

Control-oriented residual gas mass prediction for spark ignition engines

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