Characteristics of Auto-Ignition in Internal Combustion Engines Operated With Gaseous Fuels of Variable Methane Number
- 16 March 2017
- journal article
- Published by ASME International in Journal of Energy Resources Technology
- Vol. 139 (4), 042205
- https://doi.org/10.1115/1.4036044
Abstract
This paper explores the feasibility of using Syngas with low methane number as fuel for commercial turbocharged internal combustion engines. The effect of methane number (MN), compression ratio (CR), and intake pressure on auto-ignition tendency in spark ignition internal combustion engines was determined. A nondimensional model of the engine was performed by using kinetics mechanisms of 98 chemical species in order to simulate the combustion of the gaseous fuels produced from different thermochemical processes. An error function, which combines the Livengood–Wu with ignition delay time correlation, to estimate the knock occurrence crank angle (KOCA) was proposed. The results showed that the KOCA decreases significantly as the MN increases. Results also showed that Syngas obtained from coal gasification is not a suitable fuel for engines because auto-ignition takes place near the beginning of the combustion phase, but it could be used in internal combustion engines with reactivity controlled compression ignition (RCCI) technology. For the case of high compression ratio and a high inlet pressure at the engine's manifold, fuels with high MN are suitable for the operating conditions proposed.Keywords
This publication has 25 references indexed in Scilit:
- Auto-Ignition Control in Spark-Ignition Engines Using Internal Model Control StructureJournal of Energy Resources Technology, 2016
- Normalized Knock Intensity Determination Based on the Knock Sensor Analysis to Have a Fixed Detection Threshold at Different Operating ConditionsJournal of Engineering for Gas Turbines and Power, 2015
- Study on Knock Characteristics of Dimethyl Ether Fueled Homogenous Charge Compression Ignition-Direct Injection Combustion EnginesJournal of Energy Resources Technology, 2015
- Comparison Between RCCE and Shock Tube Ignition Delay Times at Low TemperaturesJournal of Energy Resources Technology, 2015
- The engine knock analysis – An overviewApplied Energy, 2012
- Experimental evaluation of knock characteristics of producer gasBiomass and Bioenergy, 2012
- Methane number testing of alternative gaseous fuelsFuel, 2009
- The Operational Mixture Limits in Engines Fueled With Alternative Gaseous FuelsJournal of Energy Resources Technology, 2006
- Prediction of the Autoignition Delay Time of Producer Gas from Biomass GasificationEnergy & Fuels, 2005
- An Investigation of the Lean Operational Limits of Gas-Fueled Spark Ignition EnginesJournal of Energy Resources Technology, 1996