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Study on Combustion and Emission Characteristics of a Turbocharged Engine Fuelled with Dimethyl Ether

Qiao Xinqi

Open publisher page 3 citations

Abstract

In this paper,an experimental study on combustion and emission characteristics in a turbocharged diesel engine operating on dimethyl ether(DME) was conducted.The results show that the torque of engine especially at low engine speed increases compared to that of original diesel engine.Since the ignition delay of DME is shorter than that of diesel,thus makes the lower value of maximum cylinder pressure,maximum rate of pressure rise and combustion noise.The diffusion combustion rate of DME is faster than that of diesel,and this decreases the combustion duration of DME.Compared with diesel engine,NO_x emissions of DME engine reduces by 41.6 percent based on ESC test data.The DME engine can realize smoke-free combustion under whole engine operating condition.

About this research paper

What this paper is about

In this paper,an experimental study on combustion and emission characteristics in a turbocharged diesel engine operating on dimethyl ether(DME) was conducted.The results show that the torque of engine especially at low engine speed increases compared to that of original diesel engine.Since the ignition delay of DME is shorter than that of diesel,thus makes the lower value of maximum cylinder pressure,maximum rate of pressure rise and combustion noise.The diffusion combustion rate of DME is faster than that of diesel,and this decreases the combustion duration of DME.Compared with diesel engine,NO_x emissions of DME engine reduces by 41.6 percent based on ESC test data.The DME engine can realize smoke-free combustion under whole engine operating condition.

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Available abstract

In this paper,an experimental study on combustion and emission characteristics in a turbocharged diesel engine operating on dimethyl ether(DME) was conducted.The results show that the torque of engine especially at low engine speed increases compared to that of original diesel engine.Since the ignition delay of DME is shorter than that of diesel,thus makes the lower value of maximum cylinder pressure,maximum rate of pressure rise and combustion noise.The diffusion combustion rate of DME is faster than that of diesel,and this decreases the combustion duration of DME.Compared with diesel engine,NO_x emissions of DME engine reduces by 41.6 percent based on ESC test data.The DME engine can realize smoke-free combustion under whole engine operating condition.

Key concepts: Diesel engine, Turbocharger, Automotive engineering, Homogeneous charge compression ignition, Diesel fuel, Combustion, Dimethyl ether, Diesel cycle

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Study on Combustion and Emission Characteristics of a Turbocharged Engine Fuelled with Dimethyl Ether — Research Paper | ScholarLens