摘要
为了实现发动机高效清洁燃烧,利用自行开发的可变气门升程机构,在无节气门条件下研究了进气门调整策略(VIV)、排气门调整策略(VEV)和进排气门耦合调整策略(VICE)对发动机性能的影响。结果表明,与原发动机相比,3种气门控制策略都可以降低有效燃油消耗率(BSFC)并提高热效率(ITE);其中,VICE策略的效果最为突出,与原发动机相比BSFC和ITE最多可优化28%和6%;VIV策略和VICE策略都可以减小发动机泵气损失,尤其是VIV策略,与原发动机相比最多可以将泵气损失减少36%;3种策略都可以降低NO_x排放,其中VEV策略表现最优异;当NMEP超过0.3 MPa后,不同气门策略对THC排放的影响较小。
In order to achieve efficient and clean combustion,the influence of variable intake valve strategy(VIV),variable exhaust valve strategy(VEV)and variable intake valve combine exhaust valve strategy(VICE)on the un-throttle engine performance was studied based on a self-developed variable valve lift actuation.The results show that,compared with the original engine,the three valve control strategies all can effectively improve brake specific fuel consumption(BSFC)and indicated thermal efficiency(ITE).The VICE strategy showed the most optimal results,for example,BSFC and ITE were optimized by up to 28%and 6%compared to the original engine.Both VIV strategy and VICE strategy can reduce pumping loss,especially for VIV strategy,which can reduce pumping loss up to 36%compared with the original engine.All three strategies can reduce NO x emissions,among which VEV strategy performed best.Different valve strategies showed few effects on THC emissions when NMEP exceeded 0.3 MPa.
作者
周遊
洪伟
解方喜
刘宇
宫洵
李小平
ZHOU You;HONG Wei;XIE Fang-xi;LIU Yu;GONG Xun;LI Xiao-ping(State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130022,China;College of Automotive Engineering,Jilin University,Changchun 130022,China;College of Artificial Intelligence,Jilin University,Changchun 130012,China)
出处
《吉林大学学报(工学版)》
EI
CAS
CSCD
北大核心
2024年第1期55-65,共11页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学基金项目(51876079)
吉林省科技发展计划项目(20200403150SF)
吉林省科技发展计划项目(20230508047RC)
吉林省教育厅科学技术研究项目(JJKH20211086KJ)
吉林大学学科交叉融合创新项目(JLUXKJC2020202)
吉林大学科技成果概念验证项目(2023GN015)
中央高校基本科研业务费专项资金项目。
关键词
内燃机
可变进排气门
气门控制策略
无节气门发动机
泵气损失
有效燃油消耗率
NO_X排放
internal combustion engine
variable intake and exhaust valves
valve control strategy
un-throttle engine
pumping loss
brake specific fuel consumption
NO_(x)emissions