US 2026/0249244 A1 · SYSTEMS AND METHODS FOR DIESEL OXIDATION CATALYST AGING PROGNOSTICS AND DIAGNOSIS

Abstract

Systems and methods for diagnosing a catalyst of an aftertreatment system are described herein. The system includes an exhaust aftertreatment system and a controller coupled to the exhaust aftertreatment system. The controller receives a dosing efficiency regarding a catalyst of the aftertreatment system and determines an actual aging condition of the catalyst based at least in part on the dosing efficiency. The controller further receives temperature data indicative of an operating temperature of the catalyst, the temperature data having associated runtime durations and determines an expected aging condition of the catalyst based on the temperature data and the associated runtime durations. The controller transmits an early aging notification to a user device in response to the actual aging condition exceeding the expected aging condition.

Claims20

Dependent claims

A system for diagnosing a catalyst of an aftertreatment system, the system comprising:

an exhaust aftertreatment system;
and a controller coupled to the exhaust aftertreatment system, the controller having one or more processing circuits comprising one or more memory devices coupled to one or more processors, the one or more memory devices configured to store instructions thereon that, when executed by the one or more processors, cause the one or more processors to:
receive a dosing efficiency regarding a catalyst of the aftertreatment system;
determine an actual aging condition of the catalyst based at least in part on the dosing efficiency;
receive temperature data indicative of an operating temperature of the catalyst, the temperature data having associated runtime durations;
determine an expected aging condition of the catalyst based on the temperature data and the associated runtime durations;
and
transmit an early aging notification to a user device in response to the actual aging condition exceeding the expected aging condition.

5 more elements

A control system for diagnosing a catalyst of an aftertreatment system, the control system comprising:

one or more processing circuits comprising one or more memory devices coupled to one or more processors, the one or more memory devices configured to store instructions thereon that, when executed by the one or more processors, cause the one or more processors to:
receive a dosing efficiency regarding a catalyst of the aftertreatment system;
determine an actual aging condition of the catalyst based at least in part on the dosing efficiency;
receive temperature data indicative of an operating temperature of the catalyst, the temperature data having associated runtime durations;
determine an expected aging condition of the catalyst based on the temperature data and the associated runtime durations;
and
transmit an early aging notification to a user device in response to the actual aging condition exceeding the expected aging condition.

4 more elements

Dependencies are inferred from the claim text.

Systems and methods for diesel oxidation catalyst aging prognostics and diagnosis

Life of this patent

Systems and methods for diesel oxidation catalyst aging prognostics and diagnosis

Life of this patent

Abstract

Claims20