The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 21, 2020
Filed:
Aug. 02, 2017
Cpt Group Gmbh, Hannover, DE;
Ralf Moos, Bayreuth, DE;
Willibald Reitmeier, Hemau, DE;
Markus Dietrich, Regensburg, DE;
Denny Schädlich, Neustadt, DE;
Markus Hien, Bruck, DE;
Katharina Burger, Regensburg, DE;
CPT GROUP GMBH, Hannover, DE;
Abstract
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.