Test of Vehicle Ignition Due to Hydrogen Gas Leakage

2006-01-0126

04/03/2006

Event
SAE 2006 World Congress & Exhibition
Authors Abstract
Content
The distribution of concentrations of hydrogen leaking into the front compartment and the dispersion after the leak was stopped were investigated to obtain basic data for specifying the mounting positions of hydrogen leak detecting sensors and the threshold values of alarms for compressed hydrogen vehicles. Ignition tests were also conducted to investigate the flammability and the environmental impact (i.e. the impact on human bodies). These tests were also conducted with methane to evaluate the protection against hydrogen leaks in vehicles in comparison with natural gas (methane). We found that the concentration of hydrogen in the front compartment reached 23.7 vol% maximum when hydrogen gas was allowed to leak for 600 sec from the center of the bottom of the wheelbase at a rate of 131 NL/min, which is the allowable limit for a fuel leak at the time of collision of compressed hydrogen vehicles in Japan. If hydrogen of this concentration is ignited, impacts on the vehicle itself (damage) and impacts on surrounding persons (injuries) are small. Furthermore, we compared methane at a flow rate equal to that of hydrogen in caloric value and confirmed that the impacts on the environment at the time of ignition were similar to those of hydrogen.
Meta TagsDetails
DOI
https://doi.org/10.4271/2006-01-0126
Pages
9
Citation
Maeda, Y., Takahashi, M., Tamura, Y., Suzuki, J. et al., "Test of Vehicle Ignition Due to Hydrogen Gas Leakage," SAE Technical Paper 2006-01-0126, 2006, https://doi.org/10.4271/2006-01-0126.
Additional Details
Publisher
Published
Apr 3, 2006
Product Code
2006-01-0126
Content Type
Technical Paper
Language
English