The Effect of Varying the Injected Charge Stoichiometry in a Partially Stratified Charge Natural Gas Engine

2005 ◽  
Author(s):  
C.C.O. Reynolds ◽  
R.L. Evans ◽  
L. Andreassi ◽  
S. Cordiner ◽  
V. Mulone
Keyword(s):  
Natural Gas ◽  
Stratified Charge ◽  
Gas Engine ◽  
Natural Gas Engine

Numerical and Experimental Characterization of a Natural Gas Engine With Partially Stratified Charge Spark Ignition

2010 ◽  
Vol 133 (2) ◽  
Author(s):  
E. C. Chan ◽  
M. H. Davy ◽  
G. de Simone ◽  
V. Mulone
Keyword(s):  
Natural Gas ◽  
Combustion Process ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Combustion Model ◽  
Turbulence Energy ◽  
Turbulent Fluctuation ◽  
Stratified Charge ◽  
Gas Engine ◽  
Natural Gas Engine

This paper outlines the development of a comprehensive numerical framework for the partially stratified charge (PSC) lean-burn natural gas engine. A 3D model of the engine was implemented to represent fluid motion and combustion. The spark ignition model was based on the works of Herweg and Maly (1992, “A Fundamental Model for Flame Kernel Formation in SI Engines,” SAE Technical Publication, Paper No. 922243) and Tan and Reitz (2006, “An Ignition and Combustion Model Based on the Level-Set Method for Spark Ignition Engine Multidimensional Modeling,” Combust. Flame, 145, pp. 1–15). The EDC model (Ertesvåg and Magnussen, 2000, “The Eddy Dissipation Turbulence Energy Cascade Model,” Combust. Sci. Technol., 159, pp. 213–235) with a two-step mechanism was used to model natural gas turbulent combustion process. An open geometry simulation strategy was adopted to account for intake-exhaust gas and valve movements. Each simulation was executed for multiple cycles to produce a representative residual gas fraction. The numerical results were compared with the experimental data obtained on the Ricardo Hydra single cylinder research engine for both homogeneous and PSC cases and they were found to be in excellent agreement in pressure trace and heat release rate. The detailed investigation of the numerical data showed the development of an ignitable mixture under PSC cases, allowing stable kernel growth well beyond the lean misfire limit of the bulk mixture. Furthermore, limits on successful ignition can be identified using the ignition model, which exhibited self-similar behavior in terms of flame speed and turbulent fluctuation. It can also be shown that, at ultralean air-fuel ratios, the PSC plume helps replicate the ignition conditions that can be found under stoichiometric operation.

A Novel Control Method of Air Fuel Ratio for Natural Gas Engine*

2020 ◽  
Author(s):  
Wenyu Xiong ◽  
Qiang Sun ◽  
Anwen Shen ◽  
Jinbang Xu
Keyword(s):  
Natural Gas ◽  
Control Method ◽  
Gas Engine ◽  
Natural Gas Engine ◽  
Fuel Ratio

Evaluation of emission characteristics of a stoichiometric natural gas engine fueled with compressed natural gas and biomethane

Energy ◽  
2021 ◽  
pp. 119766
Author(s):  
Sangho Lee ◽  
Ui Hyung Yi ◽  
Hyungjoon Jang ◽  
Cheolwoong Park ◽  
Changgi Kim
Keyword(s):  
Natural Gas ◽  
Emission Characteristics ◽  
Compressed Natural Gas ◽  
Gas Engine ◽  
Natural Gas Engine

Measured and Predicted Performance of a Downsized, Medium Duty, Natural Gas Engine

2017 ◽  
Author(s):  
Robert Draper ◽  
Brendan Lenski ◽  
Franz-Joseph Foltz ◽  
Roderick Beazley ◽  
William Tenny
Keyword(s):  
Natural Gas ◽  
Gas Engine ◽  
Natural Gas Engine

A Turbocharged Lean-Burn 4.3 Liter Natural Gas Engine

1995 ◽  
Author(s):  
Dan D. Giordano ◽  
Peter W. Petersen
Keyword(s):  
Natural Gas ◽  
Lean Burn ◽  
Gas Engine ◽  
Natural Gas Engine

Impact of ignition energy on the combustion performance of an SI heavy-duty stoichiometric operation natural gas engine

Fuel ◽  
2022 ◽  
Vol 313 ◽  
pp. 122857
Author(s):  
Zhongshu Wang ◽  
Xing Su ◽  
Xiaoyan Wang ◽  
Demin Jia ◽  
Dan Wang ◽  
...  
Keyword(s):  
Natural Gas ◽  
Ignition Energy ◽  
Heavy Duty ◽  
Gas Engine ◽  
Natural Gas Engine ◽  
Combustion Performance
Sign in / Sign up

Export Citation Format

Share Document