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RISExperimental Investigation of Combustion Characteristics of a Single Cylinder Diesel Engine at Altitude
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Concern over the change of atmospheric conditions at high altitudes prompted interests in the deteriorated efficiency and emissions from heavy-duty diesel engines. This study utilized a single-cylinder, four-stroke, direct ...
Investigation of Multistage Combustion Inside a Heavy-Duty Natural-Gas Spark-Ignition Engine Using Three-Dimensional Computational Fluid Dynamics Simulations and the Wiebe-Function Combustion Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The conversion of existing heavy-duty diesel engines to lean natural-gas (NG) spark ignition can be achieved by replacing the diesel injector with a spark plug and fumigating the NG into the intake manifold. While the ...
Limitations of Natural Gas Lean Burn Spark Ignition Engines Derived From Compression Ignition Engines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Converting existing diesel engines to the spark ignition (SI) operation can increase the utilization of natural gas (NG) in heavy-duty applications, which can reduce oil imports in the US and curtail greenhouse-gas emissions. ...
Numerical Investigation of the Intercooler Performance of Aircraft Piston Engines Under the Influence of High Altitude and Cruise Mode
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Multistage supercharging is an effective way to solve the problems of low volumetric efficiency and combustion deterioration of piston engines under high altitude conditions. As a critical component of the supercharger ...
Investigation of the Effect of Altitude on In-Cylinder Heat Transfer in Heavy-Duty Diesel Engines Based on an Empirical Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Diesel engines are the predominant power source for the trucking industry. Heavy-duty trucks carry more than 70% of all goods transported across the United States. Atmospheric conditions vary with altitude but are critical ...
Improved Thermodynamic Model for Lean Natural Gas Spark Ignition in a Diesel Engine Using a Triple Wiebe Function
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The use of natural gas (NG) in heavy-duty internal combustion engines can reduce the dependence on petroleum fuels and greenhouse gas emissions. Diesel engines can convert to NG spark ignition (SI) by installing a high-energy ...
Lean-Burn Characteristics of a Heavy-Duty Diesel Engine Retrofitted to Natural-Gas Spark Ignition
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Increased utilization of natural gas (NG) in the transportation sector can decrease the use of petroleum-based fuels and reduced greenhouse gas emissions. Heavy-duty diesel engines retrofitted to NG spark ignition (SI) can ...
Numerical Simulation of Re-Entrant Bowl Effects on Natural-Gas Spark-Ignition Operation
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: Heavy-duty compression–ignition (CI) engines converted to natural gas (NG) spark ignition (SI) operation have the potential to increase the use of NG in the transportation sector. A three-dimensional (3D) numerical simulation ...
An Experimental Investigation of Early Flame Development in an Optical Spark Ignition Engine Fueled With Natural Gas
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Improved internal combustion engine simulations of natural gas (NG) combustion under conventional and advanced combustion strategies have the potential to increase the use of NG in the transportation sector in the U.S. ...
Characterizing Two-Stage Combustion Process in a Natural Gas Spark Ignition Engine Based on Multi-Wiebe Function Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The Wiebe function is a simple and cost-effective analytical approach to approximate the burn rates in internal combustion (IC) engines. Previous studies indicated that a double-Wiebe function model can better describe the ...