会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 44. 发明授权
    • Catalyst degradation determination device for exhaust purification system
    • 用于排气净化系统的催化剂降解测定装置
    • US08671660B2
    • 2014-03-18
    • US12962039
    • 2010-12-07
    • Yuji YasuiEiji Hashimoto
    • Yuji YasuiEiji Hashimoto
    • F01N3/00F01N3/10
    • F01N3/2066F01N3/206F01N11/00F01N2550/02F01N2550/03F01N2550/05F01N2560/021F01N2560/026F01N2570/14F01N2610/02F01N2610/1473F01N2900/1402F01N2900/1622Y02T10/24Y02T10/47
    • A catalyst degradation determination device is provided that can determine the degradation of a selective reduction catalyst with high precision while also suppressing a temporary decline in purification performance. By way of controlling a urea injection device, the catalyst degradation determination device increases, in a selective reduction catalyst in a state in which the storage amount is a maximum, the storage amount thereof by a detection reduced-amount portion DSTNH3—JD, and then decreases the amount until it is determined that ammonia slip has occurred. Then, degradation is determined based on the time at which the slip determination flag FNH3—SLIP was set to “1” when fluctuating the storage amount. The detection reduced-amount portion DSTNH3—JD is set to a value that is larger than the storage capacity of the selective reduction catalyst in a degraded state and smaller than the storage capacity of the selective reduction catalyst in a normal state.
    • 提供一种能够高精度地确定选择还原型催化剂的降解的催化剂劣化测定装置,同时抑制净化性能的暂时下降。 通过控制尿素喷射装置,催化剂劣化判定装置在存储量最大的状态下的选择还原催化剂中,通过检测减量部分DSTNH3-JD的存储量增加,然后 减少量,直到确定发生氨滑移。 然后,当波动存储量时,基于滑移确定标记FNH3-SLIP被设置为“1”的时间来确定劣化。 检测减量部DSTNH3-JD被设定为大于选择还原型催化剂处于劣化状态的储存容量并且小于选择还原催化剂在正常状态下的储存容量的值。