Hydrocarbon Oxidation in the Exhaust Port of a Spark Ignition Engine

1981 ◽  
Author(s):  
John V. Mendillo ◽  
John B. Heywood
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Hydrocarbon Oxidation ◽  
Exhaust Port

scholarly journals Hydrocarbon oxidation in the exhaust port and runner of a spark ignition engine

1994 ◽  
Vol 99 (2) ◽  
pp. 422-430 ◽  
Author(s):  
Kristine Drobot ◽  
Wai K. Cheng ◽  
Frederick H. Trinker ◽  
E.William Kaiser ◽  
Walter O. Siegl ◽  
...  
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Hydrocarbon Oxidation ◽  
Exhaust Port

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.

Postcombustion hydrocarbon oxidation in a spark ignition engine

2000 ◽  
Vol 28 (1) ◽  
pp. 1233-1239 ◽  
Author(s):  
Weiying Yang ◽  
Xiaoming Bian ◽  
Srinivasa K. Prabhu ◽  
Nicholas P. Cernansky ◽  
David L. Miller
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Hydrocarbon Oxidation

Reduced Cold-Start Emissions Using Rapid Exhaust Port Oxidation (REPO) in a Spark-Ignition Engine

1997 ◽  
Author(s):  
Michael E. Crane ◽  
Robert H. Thring ◽  
Daniel J. Podnar ◽  
Lee G. Dodge
Keyword(s):  
Cold Start ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Exhaust Port
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