成果報告書詳細
管理番号20120000000161
タイトル*平成23年度中間年報 水素製造・輸送・貯蔵システム等技術開発 次世代技術開発・フィージビリティスタディ等 革新的な次世代技術の探索、有効性検証に関する研究開発 燃料電池自動車等に係る国際標準化および規制見直しのための研究開発
公開日2012/6/29
報告書年度2011 - 2011
委託先名一般財団法人日本自動車研究所
プロジェクト番号P08003
部署名新エネルギー部
和文要約和文要約等以下本編抜粋:
1.研究開発の内容及び成果等
(1)燃料電池自動車等の水素貯蔵システムの安全性評価
(ア)国内新基準(KHK S 0128)における使用環境負荷試験
国内新基準「70MPa 圧縮水素自動車燃料装置用容器の技術基準(KHK S 0128)」では、新たにシリーズ試験(使用環境負荷試験)が提案されている。このため、試験を実施する上での問題点の把握および現状容器の実力値把握を行う必要がある。
英文要約1. Safety evaluations for hydrogen storage system of fuel-cell vehicle
1) Hydraulic sequential test
We conducted hydraulic sequential tests of new domestic standard "KHK S 0128" and global technical regulation "HFCV-gtr" for existing VH3 and VH4 tanks. As a result, no problem was found in carrying out these tests. Some VH3 tanks ended with LBB and no unexpected phenomena were occurred in VH4 tanks.
2) Localized fire test
The fire exposure tests included localized and engulfing fire tests were carried out in order to compare TPRD activation time, cylinder burst pressure and other parameters between different flame configurations and also in order to identify the effects of an automotive compressed fuel cylinder on localized fire test results.
3) Fast fueling test (Safety validation of fueling protocol)
We conducted fast fueling in the condition of the protocol that will be implemented in the hydrogen stations of demonstration program. As a result, under the conditions tested, no excessive temperature rise (> 85C), no excessive pressure (> 87.5MPa), no excessive state of charge (> 100%) were occurred. So we validated the safety of proposed protocol under the conditions tested.
4) Freezing examination of nozzle and receptacle
To examine the freezing phenomena, connecting and disconnecting examination of the nozzle and the receptacle was carried out with flow of -40C pre-cooled hydrogen. As the result, we could reproduce the phenomena freezing causes difficulty to remove the nozzle from the receptacle. Through the all test condition, when freezing occurred, no hydrogen leakage occurred.
2. Safety evaluation for fuel-cell vehicles
1) Validation of the safety standard of a HFCV
(a) Determining Hydrogen Concentration in Cabin after a Collision Test
To examine a hydrogen leak test method in a closed space after vehicle collision test, proposed in HFCV-gtr, we traced the test method and conducted a hydrogen leak test on a vehicle after a simulated side collision
2) Study on accident correspondence of HFCV
(a) Validation of ventilation effect supposing rescue procedure with hydrogen leaked accidental HFCV
To validate the effect of ventilation, hydrogen concentrations surrounding vehicle with blow were measured and ignited.
(b) Investigation for judging activation of the PRD exposed to fire
In order to develop a method how to judge whether the PRD exposed to fire, the following matters were investigated.
1) Distribution of hydrogen concentration near vent opening of PRD was measured
2) Temperature of PRD vent line and asphalt road surface were measured and appearance of asphalt road surface was observed
(c) The PRD heating test
Heating a PRD to activate can be considered as an alternative depressurizing technique when hydrogen gas cannot be extract from a tank. As the first step, minimum heat rate of PRD's activation was investigated.
3. International standardization activity
1) On-board Tank
Under the collaboration with JAMA, JARI supported publication HFCV-gtr meets domestic regulation and will make an effort to publish ISO harmonized with HFCV-gtr.
In the relating ISO/DIS15869-4 vote there were still technical issues not meet HFCV-gtr remained, Japan voted disapprove and denied.
2) Fueling connector
Regarding 70 MPa connector issue JARI contributed to make consensus between over sea and domestic stakeholders and succeeded to fix a standard geometry and test procedure.
ISO/DIS17268-2 was approved with no objection and is a prospect of the FDIS vote in May this year.
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