公开(公告)号：US20210285350A1

公开(公告)日：2021-09-16

申请号：US16338730

申请日：2017-09-26

申请人： CPT Group GmbH

发明人： Ralf Moos ,  Willibald Reitmeier ,  Markus Dietrich ,  Denny Schädlich ,  Markus Hein ,  Katharina Burger ,  Gunter Hagen

IPC分类号： F01N3/20

摘要： Various embodiments include a catalyst measuring system for determining the aging of an SCR catalytic converter, the system comprising: a control device with a processor; an SCR catalytic converter for treating the exhaust gases of a vehicle; a high-frequency sensor for measuring a level of ammonia loading of the SCR catalytic converter; and an ammonia dosing system for injecting ammonia into an exhaust system of the vehicle. The control device instructs the ammonia dosing system to inject ammonia selectively into the exhaust system. The control device compares data measured by the high-frequency sensor with a predefined threshold value to determine the aging of the SCR catalytic converter.

公开(公告)号：US20190249587A1

公开(公告)日：2019-08-15

申请号：US16338628

申请日：2017-09-18

申请人： CPT Group GmbH

发明人： Ralf Moos ,  Willibald Reitmeier ,  Markus Dietrich ,  Denny Schädlich ,  Markus Hein ,  Katharina Burger

IPC分类号： F01N11/00 ,  F01N3/20 ,  F01N13/00 ,  B01D53/94 ,  G01N22/00

CPC分类号： F01N11/007 ,  B01D53/9418 ,  B01D53/9495 ,  F01N3/2066 ,  F01N3/208 ,  F01N9/00 ,  F01N11/00 ,  F01N13/008 ,  F01N2240/05 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2560/12 ,  F01N2560/14 ,  F01N2610/02 ,  F01N2900/0416 ,  F01N2900/1402 ,  F01N2900/1621 ,  F01N2900/1622 ,  G01N22/00 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

摘要： Various embodiments include a catalyst measuring system for determining the aging state of a catalytic converter comprising: an SCR catalytic converter; and a high-frequency measuring arrangement including a processor, a first antenna, and a second antenna. The first antenna is located upstream of the SCR catalytic converter in the exhaust tract and the second antenna is located downstream of the catalytic converter. The processor instructs the antennas to selectively emit and receive electromagnetic signals and evaluates the transmitted and the received electromagnetic signals to compare them with predefined threshold values. The processor determines an aging state of the SCR catalytic converter based on the comparison.

公开(公告)号：US20190226382A1

公开(公告)日：2019-07-25

申请号：US16338488

申请日：2017-08-02

申请人： CPT Group GmbH

发明人： Ralf Moos ,  Willibald Reitmeier ,  Markus Dietrich ,  Denny Schädlich ,  Markus Hein ,  Katharina Burger

IPC分类号： F01N11/00 ,  B01D53/94 ,  F01N3/20 ,  F01N9/00 ,  G07C5/08

CPC分类号： F01N11/00 ,  B01D53/9431 ,  B01D53/9495 ,  F01N3/2066 ,  F01N3/208 ,  F01N9/00 ,  F01N2550/02 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2560/12 ,  F01N2610/02 ,  F01N2900/1402 ,  G07C5/0808 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

摘要： Various embodiments include a catalyst measuring system for on-board diagnostics and for determining the aging of an SCR catalytic converter for a vehicle comprising: a processor; an SCR catalytic converter for purifying exhaust gas of the vehicle; a high-frequency sensor for determining the ammonia loading of the SCR catalytic converter; a NOx sensor for sensing the NOx concentration downstream of the SCR catalytic converter; and an ammonia dosing system for injecting ammonia into an exhaust system of the vehicle. The control device instructs the ammonia dosing system to inject ammonia selectively into the exhaust system at a plurality of different dosing rates. The control device evaluates data received from the NOx sensor and of the high-frequency sensor to calculate the ammonia dosing rate.