Investigation on combustion characteristics and emissions of diesel/hydrogen mixtures by using energy-share method in a diesel engine

Horng-Wen Wu, Zhan Yi Wu

研究成果: Article

26 引文 (Scopus)

摘要

Considering hydrogen as a clean alternative fuel for engines, this paper is to develop a procedure to add hydrogen in an intake manifold and to design an exhaust gas recirculation (EGR) system for a direct injection diesel engine. The cylinder gas pressure, air mass flow, fuel mass flow, and emissions (such as CO, CO 2, HC, NO X, and smoke) were measured under various engine loads and 0%-40% EGR ratios adjusting the hydrogen-energy-share ratio at 0%-20%, meaning that the energy of hydrogen replaced 0%-20% that of diesel fuel. The combustion characteristics such as cyclic variations, heat release rate, brake thermal efficiency, and specific fuel consumption (SFC) were determined. The results show that the variation coefficient values of indicated mean effective pressure (IMEP) are from 0.9% to 2.8%. The rate of decrease in the smoke emission is 37.6%, and that in the NO X emission is 59.5% for a 60% load, 40% EGR ratio, and 20% added hydrogen.

原文English
頁(從 - 到)154-162
頁數9
期刊Applied Thermal Engineering
42
DOIs
出版狀態Published - 2012 九月 1

指紋

Diesel engines
Exhaust gas recirculation
Hydrogen
Smoke
Gas cylinders
Engines
Alternative fuels
Direct injection
Diesel fuels
Brakes
Fuel consumption
Air
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

引用此文

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title = "Investigation on combustion characteristics and emissions of diesel/hydrogen mixtures by using energy-share method in a diesel engine",
abstract = "Considering hydrogen as a clean alternative fuel for engines, this paper is to develop a procedure to add hydrogen in an intake manifold and to design an exhaust gas recirculation (EGR) system for a direct injection diesel engine. The cylinder gas pressure, air mass flow, fuel mass flow, and emissions (such as CO, CO 2, HC, NO X, and smoke) were measured under various engine loads and 0{\%}-40{\%} EGR ratios adjusting the hydrogen-energy-share ratio at 0{\%}-20{\%}, meaning that the energy of hydrogen replaced 0{\%}-20{\%} that of diesel fuel. The combustion characteristics such as cyclic variations, heat release rate, brake thermal efficiency, and specific fuel consumption (SFC) were determined. The results show that the variation coefficient values of indicated mean effective pressure (IMEP) are from 0.9{\%} to 2.8{\%}. The rate of decrease in the smoke emission is 37.6{\%}, and that in the NO X emission is 59.5{\%} for a 60{\%} load, 40{\%} EGR ratio, and 20{\%} added hydrogen.",
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N2 - Considering hydrogen as a clean alternative fuel for engines, this paper is to develop a procedure to add hydrogen in an intake manifold and to design an exhaust gas recirculation (EGR) system for a direct injection diesel engine. The cylinder gas pressure, air mass flow, fuel mass flow, and emissions (such as CO, CO 2, HC, NO X, and smoke) were measured under various engine loads and 0%-40% EGR ratios adjusting the hydrogen-energy-share ratio at 0%-20%, meaning that the energy of hydrogen replaced 0%-20% that of diesel fuel. The combustion characteristics such as cyclic variations, heat release rate, brake thermal efficiency, and specific fuel consumption (SFC) were determined. The results show that the variation coefficient values of indicated mean effective pressure (IMEP) are from 0.9% to 2.8%. The rate of decrease in the smoke emission is 37.6%, and that in the NO X emission is 59.5% for a 60% load, 40% EGR ratio, and 20% added hydrogen.

AB - Considering hydrogen as a clean alternative fuel for engines, this paper is to develop a procedure to add hydrogen in an intake manifold and to design an exhaust gas recirculation (EGR) system for a direct injection diesel engine. The cylinder gas pressure, air mass flow, fuel mass flow, and emissions (such as CO, CO 2, HC, NO X, and smoke) were measured under various engine loads and 0%-40% EGR ratios adjusting the hydrogen-energy-share ratio at 0%-20%, meaning that the energy of hydrogen replaced 0%-20% that of diesel fuel. The combustion characteristics such as cyclic variations, heat release rate, brake thermal efficiency, and specific fuel consumption (SFC) were determined. The results show that the variation coefficient values of indicated mean effective pressure (IMEP) are from 0.9% to 2.8%. The rate of decrease in the smoke emission is 37.6%, and that in the NO X emission is 59.5% for a 60% load, 40% EGR ratio, and 20% added hydrogen.

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