共查询到17条相似文献,搜索用时 171 毫秒
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电控发动机性能开发是一项系统工程,包括性能设计、结构设计、标定数据优化以及整机性能优化。通过分析电控系统的标定方法、试验设计方法,认为标定方法不仅要做到优化电控系统与发动机的匹配,还应具备预测缺陷、性能和改进方向的功能。 相似文献
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发动机空燃比传输特性的研究 总被引:5,自引:2,他引:5
为了提高发动机的动力性、经济性和降低尾气排放,必须对发动机的空燃比(AFR)进行反馈控制,而发动机的AFR传输特性对AFR控制精度有很大影响。通过对发动机AFR传输特性及其影响因素进行分析,提出了一种标定传输延迟时间的试验方法,在此基础上利用自行开发的试验系统,对发动机的AFR传输延迟时间进行了标定。 相似文献
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Jae Woo Chung Nam Ho Kim Deok Jin Kim Seong Sik Jang 《International Journal of Automotive Technology》2018,19(2):209-220
Recently, to improve vehicle fuel economy, as well as the performance of internal combustion engines, optimized system matching between a vehicle’s drivetrain and engine has become a very important technical issue. For this reason, the need for simulation research on engine and vehicle performance improvement has increased. But in general, since both engine simulation and vehicle simulation require initial engine calibration map input, a simple engine calibration method is required for the efficient configuration of various virtual engine calibration map setups. On this background, in this study, an example of waste gate turbocharger (WGT) cooled — exhaust gas recirculation (EGR) Diesel engine calibration using a test-based mean value engine model is presented as a suitable engine calibration map setting method. Also, the feasibility of an engine calibration model is confirmed through various engine tests. Using the simple model presented here, it is possible for diverse engine operating conditions and engine performance maps to be acquired. 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(2-3):225-251
In this paper, a new framework for idle speed control is presented [The idle control methodology described paper is protected by international patent law]. A simple new discrete event based engine model evolving in the crank domain is given and is parameterized using a combination of dynamic identification and steady state calibration. The majority of the non-linearities can then be inverted and a second synthetic output is introduced. This second output is the torque reserve of the engine and enables control of the tradeoff between disturbance rejection capabilities and engine efficiency. A linear controller is designed using the H 8 loopshaping technique and results are presented from dynamometer based engine tests. 相似文献
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Richard Ford Keith Glover 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2001,36(2):225-251
In this paper, a new framework for idle speed control is presented [The idle control methodology described paper is protected by international patent law]. A simple new discrete event based engine model evolving in the crank domain is given and is parameterized using a combination of dynamic identification and steady state calibration. The majority of the non-linearities can then be inverted and a second synthetic output is introduced. This second output is the torque reserve of the engine and enables control of the tradeoff between disturbance rejection capabilities and engine efficiency. A linear controller is designed using the H 8 loopshaping technique and results are presented from dynamometer based engine tests. 相似文献
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