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Effect of Preconditioning on In-Use Vehicle Testing and Failure Analysis of Evaporative Emission Control Systems,

机译:预处理对在用车辆测试和蒸发排放控制系统故障分析的影响,

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Evaporative (SHED) and exhaust emission tests were performed on 20 latemodel catalyst-equipped vehicles to investigate the effect of three preconditioning procedures consisting of: (1) no preconditioning, (2) 1975 FTP driving schedule,and (3) 10-minute road route. A failure analysis was also performed on several vehicles which were found to either have high evaporative emissions or evaporative emissions which were higher than similarly equipped vehicles.

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