Residual Gas Fraction Measurement and Estimation in Spark Ignition Engine

2007 ◽  
Author(s):  
P. Giansetti ◽  
P. Higelin
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Residual Gas Fraction ◽  
Residual Gas ◽  
Fraction Measurement

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

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.

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

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

Model-Based Dynamic In-Cylinder Air Charge, Residual Gas and Temperature Estimation for a GDI Spark Ignition Engine Using Cylinder, Intake and Exhaust Pressures

2020 ◽  
Author(s):  
Amir Khameneian ◽  
Xin Wang ◽  
Paul Dice ◽  
Mahdi Shahbakhti ◽  
Jefferey D. Naber ◽  
...  
Keyword(s):  
Steady State ◽  
Gas Flow ◽  
Transient Behavior ◽  
Spark Ignition ◽  
Ideal Gas ◽  
Spark Ignition Engine ◽  
Exhaust Gas ◽  
Engine Operation ◽  
Trapped Air ◽  
Residual Gas

Abstract The in-cylinder trapped air, residual gas, and temperature directly impact Spark Ignition (SI) engine operation and control. However, estimation of these variables dynamically is difficult. This study proposes a dynamic cycle-by-cycle model for estimation of the in-cylinder mixture temperature at different events such as Intake Valve Closed (IVC), as well as mass of trapped air and residual gas. In-cylinder, intake and exhaust pressure traces are the primary inputs to the model. The mass of trapped residual gas is affected by valve overlap increase due to the exhaust gas backflow. Of importance to engines with Variable Valve Timing (VVT), the compressible ideal-gas flow correlations were applied to predict the exhaust gas backflow into the cylinder. Furthermore, 1D GT-Power Three Pressure Analysis (TPA) was used to calibrate and validate the designed model under steady-state conditions. To minimize the calibration efforts, Design of Experiments (DOE) analysis methodology was used. The transient behavior of the model was validated using dynamometer dynamic driving cycle. The cycle-based output parameters of the developed model are in good agreement with transient experimental data with minimal delay and overshoot. The predicted parameters follow the input dynamics propagated in the in-cylinder, intake and exhaust pressure traces with a 1.5% average relative steady-state prediction error.

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