【摘要】 研制了一种在发动机台架上进行柴油机变工况下排气微粒测量的测试系统。该系统主要由普通测功机和微粒稀释取样袋等组成。用此系统可进行柴油机恒转速变扭矩、恒扭矩变转速和转速与扭矩成比例变化等模式变工况的微粒测量。试验结果表明柴油机在不同变工况模式下的微粒排放有各自不同的变化规律。更多还原

【Abstract】 A system for measuring exhaust particulates from an automotive diesel engine under transient operating conditions was developed, which includes a conventional dynamometer and a dilution sampling bag. Using the system, the particulates emission can be measured under three transient operating modes: constant speed with changing torque, constant torque with changing speed, and speed changes in proportion to the changes of torque. Test results showed exhaust particulates emissions from diesel engine behave differently under different transient operating conditions.更多还原