A Model for Predicting Residual Gas Fraction in Spark-Ignition Engines

1993 ◽  
Author(s):  
Jonathan W. Fox ◽  
Wai K. Cheng ◽  
John B. Heywood
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engines ◽  
Residual Gas Fraction ◽  
Residual Gas

Model-Based Stochastic Optimal Air–Fuel Ratio Control With Residual Gas Fraction of Spark Ignition Engines

2014 ◽  
Vol 22 (3) ◽  
pp. 896-910 ◽  
Author(s):  
Jun Yang ◽  
Tielong Shen ◽  
Xiaohong Jiao
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engines ◽  
Fuel Ratio ◽  
Model Based ◽  
Residual Gas Fraction ◽  
Residual Gas

Residual Gas Fraction Measurement in Spark Ignition Engines

2005 ◽  
Author(s):  
P. Giansetti ◽  
P. Higelin ◽  
Y. Chamaillard ◽  
A. Charlet
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engines ◽  
Residual Gas Fraction ◽  
Residual Gas ◽  
Fraction Measurement

A Model for Residual Gas Fraction Prediction in Spark Ignition Engines

2002 ◽  
Author(s):  
P. Giansetti ◽  
C. Perrier ◽  
P. Higelin ◽  
Y. Chamaillard ◽  
A. Charlet ◽  
...  
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engines ◽  
Residual Gas Fraction ◽  
Residual Gas

PARAMETRIC STUDY OF THE RESIDUAL GAS IN SPARK IGNITION ENGINES

1997 ◽  
Vol 15 (9-10) ◽  
pp. 779-803
Author(s):  
Yousef S.H Najjar
Keyword(s):  
Parametric Study ◽  
Spark Ignition ◽  
Spark Ignition Engines ◽  
Residual Gas

scholarly journals Comparative Study of the Effective Release Energy, Residual Gas Fraction, and Emission Characteristics with Various Valve Port Diameter-Bore Ratios (VPD/B) of a Four-Stroke Spark Ignition Engine

Energies ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1330 ◽  
Author(s):  
Nguyen Xuan Khoa ◽  
Ocktaeck Lim
Keyword(s):  
Load Condition ◽  
Experimental System ◽  
Optimization Method ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Pressure Increase ◽  
Intake Port ◽  
Exhaust Port ◽  
Residual Gas Fraction ◽  
Residual Gas

In this research, the residual gas, peak firing pressure increase, and effective release energy were completely investigated. To obtain this target, the experimental system is installed with a dynamo system and a simulation model was setup. Through combined experimental and simulation methods, the drawbacks of the hardware optimization method were eliminated. The results of the research show that the valve port diameter-bore ratio (VPD/B) has a significant effect on the residual gas, peak firing pressure increase, and effective release energy of a four-stroke spark ignition engine. In this research, the engine was performed at 3000 rpm and full load condition. Following increased IPD/B ratio of 0.3–0.5. The intake port and exhaust port diameter has a contrary effect on engine volumetric efficiency, the residual gas ratio increase 27.3% with larger intake port and decrease 18.6% with larger exhaust port. The engine will perform optimal thermal efficiency when the trapped residual gas fraction ratio is from 13% to 14%. The maximum effective release energy was 0.45 kJ at 0.4 intake port-bore ratio, and 0.451 kJ at 0.35 exhaust port-bore ratio. The NOx emission increases until achieved a maximum value after that decrease even VPD/B was still increasing. With a VPD/B ratio of 0.35 to 0.4, the engine works without the misfiring.

scholarly journals Evaluation of residual gas fraction estimation methods for cycle-to-cycle combustion variability analysis and modeling

2021 ◽  
pp. 146808742098308
Author(s):  
Bryan P Maldonado ◽  
Brian C Kaul
Keyword(s):  
Combustion Process ◽  
Operating Conditions ◽  
Normal Operation ◽  
Estimation Methods ◽  
Spark Ignition Engines ◽  
Complete Combustion ◽  
Advantages And Disadvantages ◽  
Field Homogeneity ◽  
Residual Gas Fraction ◽  
Residual Gas

Cycle-to-cycle combustion variability in spark-ignition engines during normal operation is mainly caused by random perturbations of the in-cylinder conditions such as the flow velocity field, homogeneity of the air-fuel distribution, spark energy discharge, and turbulence intensity of the flame front. Such perturbations translate into the variability of the energy released observed at the end of the combustion process. During normal operating conditions, the cycle-to-cycle variability (CCV) of the energy release behaves as random uncorrelated noise. However, during diluted combustion, in either the form of exhaust gas recirculation (EGR) or excess air (lean operation), the CCV tends to increase as dilution increases. Moreover, when the ignition limit is reached at high dilution levels, the combustion CCV is exacerbated by sporadic occurrences of incomplete combustion events, and the uncorrelation assumption no longer holds. The low or null energy released by partial burns and misfires has an impact on the following combustion event due to the residual gas that carries burned and unburned gases, which contributes to the deterministic coupling between engine cycles. Many residual gas fraction estimation methods, however, only address the nominal case where complete combustion occurs and combustion events are uncorrelated. This study evaluates the efficacy of such methods on capturing the effects of partial burns and misfires on the residual gas estimate for high-EGR operation. The advantages and disadvantages of each method are discussed based on their ability to generate cycle-to-cycle estimates. Finally, a comparison between the different estimation techniques is presented based on their usefulness for control-oriented modeling.

Air Charge and Residual Gas Fraction Estimation for a Spark-Ignition Engine Using In-Cylinder Pressure

2017 ◽  
Author(s):  
Arya Yazdani ◽  
Jeffrey Naber ◽  
Mahdi Shahbakhti ◽  
Paul Dice ◽  
Chris Glugla ◽  
...  
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Cylinder Pressure ◽  
Residual Gas Fraction ◽  
Residual Gas

An Evaluation of Residual Gas Fraction Measurement Techniques in a High Degree of Freedom Spark Ignition Engine

2008 ◽  
Vol 1 (1) ◽  
pp. 71-84 ◽  
Author(s):  
Robert G. Prucka ◽  
Zoran Filipi ◽  
Dennis N. Assanis ◽  
Denise M. Kramer ◽  
Gregory L. Ohl
Keyword(s):  
Measurement Techniques ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Degree Of Freedom ◽  
Residual Gas Fraction ◽  
Residual Gas ◽  
Fraction Measurement ◽  
High Degree
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