| 催化器OBD诊断监测频率功能的研究与验证 |
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| 引用本文： | 高炜.催化器OBD诊断监测频率功能的研究与验证[J].农业装备与车辆工程,2014(7):13-16. |
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| 作者姓名： | 高炜 |
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| 作者单位： | 上海交通大学机械与动力工程学院,上海市200030 |
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| 摘 要： | 介绍了利用储氧量(OSC)法对催化器进行OBD故障诊断的原理,并介绍了法规新增的监测频率(IUPR)功能。通过转鼓试验,验证了在NEDC,FTP75和JC08循环中催化器诊断的完成情况和相应的IUPR率的增长情况。通过实际道路试验,观察IUPR率的变化规律,我们得出:经过一定里程后,同一OBD系族车型催化器诊断的IUPR率趋于稳定一致,可以作为该车型在用符合性检查的数据指标。
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| 关 键 词： | 催化器诊断 OBD 监测频率 IUPR |
Research and Test on IUPR Function of Three-Way Catalyst Diagnosis |
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| Gao Wei.Research and Test on IUPR Function of Three-Way Catalyst Diagnosis[J].Agricultural Equipment & Vehicle Engineering,2014(7):13-16. |
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| Authors: | Gao Wei |
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| Institution: | Gao Wei (School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200030, China) |
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| Abstract: | The principle of On-Board Diagnosis （OBD） catalyst diagnosis based on Oxygen Storage Capacity （OSC）,and new requirement of regnlation：In-Use Performance Ratio （IUPR）are introduced. Through dynamometer test result, catalyst diagnosis can be finished in all homologation cycle including NEDC, FTP75 and JC08 with IUPR increasing normally. According to mad test, the conclusion can be drawn from the analysis of data that after certain mileages, IUPR of same OBD family goes to similar value stably, which can be used in compliance verification. |
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| Keywords: | catalyst diagnosis OBD test frequency IUPR |
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