Characteristics of Spontaneous Ignition and Combustion in Unsteady High-Speed Gaseous Fuel Jets

2003-01-1922

05/19/2003

Event
2003 JSAE/SAE International Spring Fuels and Lubricants Meeting
Authors Abstract
Content
In order to obtain fundamental data to employ direct injection in gas-fueled engines, an experimental study was carried out using a constant volume vessel. Heat release rates and shadowgraph photos were acquired for natural-gas and hydrogen jets simulating the changes in engine-combustion-control factors.
The results show that although a higher temperature is needed for ignition, the temperature dependencies of ignition delay and heat release rate in natural-gas jets are similar to those of diesel sprays. The ignition delay and heat release rate are sensitive to injection and ambient conditions.
Hydrogen jets have shorter ignition delays compared with natural gas jets. At sufficiently high ambient temperatures, the heat release pattern shows an entire diffusion combustion. Under such conditions, the ignition delay is not greatly influenced by injection conditions and the heat release rate can be controlled by the injection rate.
Meta TagsDetails
DOI
https://doi.org/10.4271/2003-01-1922
Pages
13
Citation
ISHIYAMA, T., SHIOJI, M., IHARA, T., INOUE, T. et al., "Characteristics of Spontaneous Ignition and Combustion in Unsteady High-Speed Gaseous Fuel Jets," SAE Technical Paper 2003-01-1922, 2003, https://doi.org/10.4271/2003-01-1922.
Additional Details
Publisher
Published
May 19, 2003
Product Code
2003-01-1922
Content Type
Technical Paper
Language
English