Abstract
Facing the reinforced emission regulations and moving toward a clean powertrain, hydrogen has become one of the alternative fuels for the internal combustion engine. In this study, the prediction methodology of hydrogen yield by on-board fuel reforming under a diesel engine is introduced. An engine dynamometer test was performed, resulting in reduced particulate matter (PM) and NOx emission with an on-board reformer. Based on test results, the reformed gas production rate from the on-board reformer was trained and predicted using an artificial neural network with a backpropagation process at various operating conditions. Additional test points were used to verify predicted results, and sensitivity analysis was performed to obtain dominant parameters. As a result, the temperature at the reformer outlet and oxygen concentration is the most dominant parameters to predict reformed gas owing to auto-thermal reforming driven by partial oxidation reforming process, dominantly.
Highlights
Eco-friendly energy sources, such as electricity and fuel cells, which can replace internal combustion engines, have attracted significant attention due to extreme environmental pollution.eco-friendly energy sources involve several problems, such as insufficient driving range, lack of charging stations, and high vehicle prices
It was apparent that reformed hydrogen with an Exhaust gas recirculation (EGR) system could be proposed for the simultaneous reduction in NOx and particulate matter (PM) emitted from a small diesel engine
Based on test results with on-board reforming, the present study focused on the data training and sensitivity analysis applying an artificial neural network
Summary
Eco-friendly energy sources, such as electricity and fuel cells, which can replace internal combustion engines, have attracted significant attention due to extreme environmental pollution. Diesel engines, among internal combustion engines, are effective in reducing CO2 [2] They offer many advantages, such as high efficiency and torque. The addition of hydrogen to a diesel engine can simultaneously decrease NOx and PM emissions [12,13]. Cho et al examined the effect of hydrogen addition to a diesel engine They observed that NOx and PM emissions can be decreased simultaneously via hydrogen addition [14]. Tsolakis et al studied the addition of reformed gas to a diesel engine They used a low pressure (LP)-EGR and a reformer to generate hydrogen without a hydrogen tank. It was apparent that reformed hydrogen with an EGR system could be proposed for the simultaneous reduction in NOx and PM emitted from a small diesel engine. Dominant parameters are suggested to predict reforming yield under the on-board fuel reforming system in a diesel engine
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
