Influence of quick release valve on braking performance and coupler force of heavy haul train
Abstract We establish a simulation model based on the theory of air flow to analyze the accelerated release effect of the quick release valve inside the air brake control valve. In addition, the combined simulation system of train air brake system and longitudinal train dynamics is used to analyze h...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-03-01
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| Series: | Railway Engineering Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s40534-022-00301-1 |
| _version_ | 1797779070055874560 |
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| author | Wei Wei Yuan Zhang Jun Zhang Xubao Zhao |
| author_facet | Wei Wei Yuan Zhang Jun Zhang Xubao Zhao |
| author_sort | Wei Wei |
| collection | DOAJ |
| description | Abstract We establish a simulation model based on the theory of air flow to analyze the accelerated release effect of the quick release valve inside the air brake control valve. In addition, the combined simulation system of train air brake system and longitudinal train dynamics is used to analyze how the parameters of the quick release valve in the 120/120–1 brake control valve affect the propagation characteristics of the train brake pipe pressure wave, the release action range of the accelerated brake, and the longitudinal coupler force for a 20,000-ton heavy haul train on the section of the Datong–Qinhuangdao Railway. The results show that the quick release valve can effectively accelerate the rising speed of the train brake pipe pressure during the initial release, as the accelerated release effect is evident before the train brake pipe pressure reaches 582 kPa. The quick release valve can effectively accelerate the release of the rear cars, reducing the longitudinal coupler force impact due to time delay of the release process. The quick release valve can effectively reduce the tensile coupler force in the train by as much as 20% in certain cases. |
| first_indexed | 2024-03-12T23:26:25Z |
| format | Article |
| id | doaj.art-a705ba48cbf34f35a450f970faf9ac39 |
| institution | Directory Open Access Journal |
| issn | 2662-4745 2662-4753 |
| language | English |
| last_indexed | 2024-03-12T23:26:25Z |
| publishDate | 2023-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Railway Engineering Science |
| spelling | doaj.art-a705ba48cbf34f35a450f970faf9ac392023-07-16T11:08:36ZengSpringerOpenRailway Engineering Science2662-47452662-47532023-03-0131215316110.1007/s40534-022-00301-1Influence of quick release valve on braking performance and coupler force of heavy haul trainWei Wei0Yuan Zhang1Jun Zhang2Xubao Zhao3Dalian Jiaotong UniversityDalian Jiaotong UniversityDalian Jiaotong UniversityDalian Jiaotong UniversityAbstract We establish a simulation model based on the theory of air flow to analyze the accelerated release effect of the quick release valve inside the air brake control valve. In addition, the combined simulation system of train air brake system and longitudinal train dynamics is used to analyze how the parameters of the quick release valve in the 120/120–1 brake control valve affect the propagation characteristics of the train brake pipe pressure wave, the release action range of the accelerated brake, and the longitudinal coupler force for a 20,000-ton heavy haul train on the section of the Datong–Qinhuangdao Railway. The results show that the quick release valve can effectively accelerate the rising speed of the train brake pipe pressure during the initial release, as the accelerated release effect is evident before the train brake pipe pressure reaches 582 kPa. The quick release valve can effectively accelerate the release of the rear cars, reducing the longitudinal coupler force impact due to time delay of the release process. The quick release valve can effectively reduce the tensile coupler force in the train by as much as 20% in certain cases.https://doi.org/10.1007/s40534-022-00301-1Brake systemRelease characteristicsQuick release valveCoupler forceHeavy haul train |
| spellingShingle | Wei Wei Yuan Zhang Jun Zhang Xubao Zhao Influence of quick release valve on braking performance and coupler force of heavy haul train Railway Engineering Science Brake system Release characteristics Quick release valve Coupler force Heavy haul train |
| title | Influence of quick release valve on braking performance and coupler force of heavy haul train |
| title_full | Influence of quick release valve on braking performance and coupler force of heavy haul train |
| title_fullStr | Influence of quick release valve on braking performance and coupler force of heavy haul train |
| title_full_unstemmed | Influence of quick release valve on braking performance and coupler force of heavy haul train |
| title_short | Influence of quick release valve on braking performance and coupler force of heavy haul train |
| title_sort | influence of quick release valve on braking performance and coupler force of heavy haul train |
| topic | Brake system Release characteristics Quick release valve Coupler force Heavy haul train |
| url | https://doi.org/10.1007/s40534-022-00301-1 |
| work_keys_str_mv | AT weiwei influenceofquickreleasevalveonbrakingperformanceandcouplerforceofheavyhaultrain AT yuanzhang influenceofquickreleasevalveonbrakingperformanceandcouplerforceofheavyhaultrain AT junzhang influenceofquickreleasevalveonbrakingperformanceandcouplerforceofheavyhaultrain AT xubaozhao influenceofquickreleasevalveonbrakingperformanceandcouplerforceofheavyhaultrain |