Cooling system of a motor vehicle
US-2016363101-A1 · Dec 15, 2016 · US
Detecting, diagnosing or indicating an abnormal function of the EGR system
Detecting, diagnosing or indicating an abnormal function of the EGR system · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F02M26/49 |
| Official title | Detecting, diagnosing or indicating an abnormal function of the EGR system |
| Display label | Detecting, diagnosing or indicating an abnormal function of the EGR system |
| Total patents | 346 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 30 |
| 2016 | 48 |
| 2017 | 25 |
| 2018 | 42 |
| 2019 | 47 |
| 2020 | 30 |
| 2021 | 41 |
| 2022 | 41 |
| 2023 | 20 |
| 2024 | 14 |
| 2025 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Vehicle with an egr-cooler and its diagnotic
US-2016348616-A1 · Dec 1, 2016 · US
Ignition apparatus
US-2016341170-A1 · Nov 24, 2016 · US
EGR cooler condition module and associated system
US-9500145-B2 · Nov 22, 2016 · US
Engine control device and engine control method
US-2016327009-A1 · Nov 10, 2016 · US
Control system of internal combustion engine
US-2016319755-A1 · Nov 3, 2016 · US
Device and method for controlling the operation of an exhaust gas recirculation valve using an ignition advance management device
US-2016312717-A1 · Oct 27, 2016 · US
System for determining EGR cooler degradation
US-9476387-B2 · Oct 25, 2016 · US
Method for diagnosing a differential pressure sensor situated in an air duct of an internal combustion engine
US-9470600-B2 · Oct 18, 2016 · US
Air Intake System of an Internal Combustion Engine
US-2016265489-A1 · Sep 15, 2016 · US
Methods and systems for an oxygen sensor
US-2016245212-A1 · Aug 25, 2016 · US
Method and system for charge air system valve diagnosis
US-9422896-B2 · Aug 23, 2016 · US
System and methods for operating an exhaust gas recirculation valve based on a temperature difference of the valve
US-2016230684-A1 · Aug 11, 2016 · US
Method of assessing the functioning of an EGR cooler in an internal combustion engine
US-9410494-B2 · Aug 9, 2016 · US
Method for checking the functionality of a differential pressure measuring unit of a motor vehicle exhaust gas recirculation system
US-2016222925-A1 · Aug 4, 2016 · US
Exhaust gas purification system of internal combustion engine
US-2016222896-A1 · Aug 4, 2016 · US
Method for diagnosing EGR system
US-9389144-B2 · Jul 12, 2016 · US
Methods and systems for an oxygen sensor
US-9382858-B1 · Jul 5, 2016 · US
Exhaust system state detection device
US-2016169168-A1 · Jun 16, 2016 · US
Method and systems for exhaust gas control
US-2016160811-A1 · Jun 9, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02M26/49?
- CPC F02M26/49 is the Cooperative Patent Classification code for “Detecting, diagnosing or indicating an abnormal function of the EGR system.”
- How many patents are filed under CPC F02M26/49 (Detecting, diagnosing or indicating an abnormal function of the EGR system)?
- Our database includes 346 publications tagged with this CPC code.
- Is patent activity under CPC F02M26/49 growing?
- Publication counts under this code: 14 in 2024 vs 8 in 2025 (latest complete years).