A two-input and two-output physical model for pressures and combustion phases was built to realize the coordinated control of the peak pressures and combustion phases for a homogeneous charge compression ignition (HCCI) engine. This model is based on the Shaver' residual-affected HCCI engine model with the constant wall temperature heat transfer model suitable for HCCI combustion. A cooperative control system of pressure and combustion phase was designed using the model predictive control (MPC) theory with the variable valve timing (VVT) as the control method. The coordinated simulation experiment was done by using GT-Power and Matlab/Simulink. The results show that the control model satisfies the engine control demand, realizes the collaborative control of the pressure and combustion phase with control accuracies of ±30 kPa and ±0.6° CA, and the response time of 6-7 engine cycles.
{"title":"Multivariable Control of Residual-Affected HCCI Engines Based on Model Predictive Control","authors":"Dinggen Li, Dingding Wang","doi":"10.4271/2013-01-2511","DOIUrl":"https://doi.org/10.4271/2013-01-2511","url":null,"abstract":"A two-input and two-output physical model for pressures and combustion phases was built to realize the coordinated control of the peak pressures and combustion phases for a homogeneous charge compression ignition (HCCI) engine. This model is based on the Shaver' residual-affected HCCI engine model with the constant wall temperature heat transfer model suitable for HCCI combustion. A cooperative control system of pressure and combustion phase was designed using the model predictive control (MPC) theory with the variable valve timing (VVT) as the control method. The coordinated simulation experiment was done by using GT-Power and Matlab/Simulink. The results show that the control model satisfies the engine control demand, realizes the collaborative control of the pressure and combustion phase with control accuracies of ±30 kPa and ±0.6° CA, and the response time of 6-7 engine cycles.","PeriodicalId":152823,"journal":{"name":"Journal of the Automotive Safety and Energy","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132483179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-12-25DOI: 10.3969/J.ISSN.1674-8484.2012.04.011
Hao Yuan, Lifang Wang, Liye Wang
{"title":"Battery thermal management system with liquid cooling and heating in electric vehicles","authors":"Hao Yuan, Lifang Wang, Liye Wang","doi":"10.3969/J.ISSN.1674-8484.2012.04.011","DOIUrl":"https://doi.org/10.3969/J.ISSN.1674-8484.2012.04.011","url":null,"abstract":"","PeriodicalId":152823,"journal":{"name":"Journal of the Automotive Safety and Energy","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122258491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.3969/J.ISSN.1674-8484.2013.01.005
Hongchuan Wang, E. Shang, Yang Zhao, Weixu Wang, Xanling Chen, Yu-tao Shi
Thorax compressed distortion in frontal crash tests is an important appraisal for vehicle safety according to the China New Car Appraise Program (C-NCAP). In current frontal crash dummy tests, different rib inconsistent performance may lead to different data of the thorax compression. This paper investigates the influence of dummy rib stiffness characteristics and their differences on the chest compression deformation through calibrating frontal impact tests for two 50th percentile Hybrid-III male dummies, and revising the sensitivity coefficient of chest displacement sensors in the calibrating measurement. The results indicate that revising sensitivity coefficient can eliminate the differences caused by rib stiffness characteristics. Therefore, this method can improve the test accuracy, strongly supporting the vehicle constraint system development.
{"title":"Elimination of rib stiffness difference for a Hybrid-III dummy in frontal crash test","authors":"Hongchuan Wang, E. Shang, Yang Zhao, Weixu Wang, Xanling Chen, Yu-tao Shi","doi":"10.3969/J.ISSN.1674-8484.2013.01.005","DOIUrl":"https://doi.org/10.3969/J.ISSN.1674-8484.2013.01.005","url":null,"abstract":"Thorax compressed distortion in frontal crash tests is an important appraisal for vehicle safety according to the China New Car Appraise Program (C-NCAP). In current frontal crash dummy tests, different rib inconsistent performance may lead to different data of the thorax compression. This paper investigates the influence of dummy rib stiffness characteristics and their differences on the chest compression deformation through calibrating frontal impact tests for two 50th percentile Hybrid-III male dummies, and revising the sensitivity coefficient of chest displacement sensors in the calibrating measurement. The results indicate that revising sensitivity coefficient can eliminate the differences caused by rib stiffness characteristics. Therefore, this method can improve the test accuracy, strongly supporting the vehicle constraint system development.","PeriodicalId":152823,"journal":{"name":"Journal of the Automotive Safety and Energy","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125120419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.3969/J.ISSN.1674-8484.2012.04.003
Yang Liu, Xinghua Lai, Chunsheng Ma
The crash safety of four-door sedans in near-side impacts was investigated with respect to the vehicle model year and the occupant seating position to predict serious injury risks, using the National Highway Traffic Safety Administration (NHTSA) New Car Assessment Program (NCAP) moving deformable barrier (MDB) tests database as the data sources. The test vehicle geometrical characteristics and the crush deformation were summarized with the head injury criteria (HIC), the thoracic trauma index (TTI), and the peak pelvis lateral acceleration (PPLA) used to evaluate serious injury risks for different body regions of occupants. The results show that these injury criteria all decrease with increasing vehicle model year for both front and rear seat occupants. Much higher risks of serious head and thoracic injury occur for rear seat occupants compared with the front seat occupants for newer vehicle models. Restraint effectiveness is closely related to occupant seating positions. Therefore, the head and thoracic injury mechanism and countermeasures should be emphasized for rear seat occupants.
{"title":"Influence of Vehicle Model Year and Occupant Seating Position on Serious Injury Risk in Near-Side Collision","authors":"Yang Liu, Xinghua Lai, Chunsheng Ma","doi":"10.3969/J.ISSN.1674-8484.2012.04.003","DOIUrl":"https://doi.org/10.3969/J.ISSN.1674-8484.2012.04.003","url":null,"abstract":"The crash safety of four-door sedans in near-side impacts was investigated with respect to the vehicle model year and the occupant seating position to predict serious injury risks, using the National Highway Traffic Safety Administration (NHTSA) New Car Assessment Program (NCAP) moving deformable barrier (MDB) tests database as the data sources. The test vehicle geometrical characteristics and the crush deformation were summarized with the head injury criteria (HIC), the thoracic trauma index (TTI), and the peak pelvis lateral acceleration (PPLA) used to evaluate serious injury risks for different body regions of occupants. The results show that these injury criteria all decrease with increasing vehicle model year for both front and rear seat occupants. Much higher risks of serious head and thoracic injury occur for rear seat occupants compared with the front seat occupants for newer vehicle models. Restraint effectiveness is closely related to occupant seating positions. Therefore, the head and thoracic injury mechanism and countermeasures should be emphasized for rear seat occupants.","PeriodicalId":152823,"journal":{"name":"Journal of the Automotive Safety and Energy","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129264731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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