Combustion Characteristics Of A Diesel- Hydrogen Dual Fuel Engine
Among the alternative fuels, hydrogen shows great potential in the near future. In the present study, hydrogen utilization as diesel engine fuel was investigated. Hydrogen can not be used directly in a diesel engine due to its autoignition temperature higher than that of diesel fuel. One alternat...
| Main Authors: | , |
|---|---|
| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2010
|
| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/1760/ http://umpir.ump.edu.my/id/eprint/1760/1/Combustion_Characteristics_Of_A_Diesel-_Hydrogen_Dual_Fuel_Engine.pdf |
| Summary: | Among the alternative fuels, hydrogen shows great potential in the near future. In the
present study, hydrogen utilization as diesel engine fuel was investigated. Hydrogen can
not be used directly in a diesel engine due to its autoignition temperature higher than
that of diesel fuel. One alternative method is to use hydrogen in enrichment or
induction. To investigate the combustion characteristics of this dual fuel engine, a single
cylinder diesel research engine was converted to utilize hydrogen as fuel. Hydrogen was
introduced to the intake manifold using a mixer before entering the combustion
chamber. The engine was run at a constant speed of 2000 rpm and variable loads. At
each load step the flow rate of hydrogen was varied. Fuel consumption, injector needle
lift movement, and cylinder pressure were measured. Introducing hydrogen to the
combustion chamber reduced the diesel fuel consumption. Indicated efficiency slightly
increases with hydrogen enrichment at 15 Nm load. At lower load the efficiency
decreases. Specific energy consumption increases with increase in hydrogen flow rate at
5 and 10 Nm load. Inversely, it decreases at higher load. Cylinder pressure decreases
with hydrogen enrichment at 5 and 10 Nm, but slightly increases at higher load |
|---|