Torque compensation for air/fuel switching
US-12448931-B2 · Oct 21, 2025 · US
for idle speed control
for idle speed control · 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 | F02D31/008 |
| Official title | {for idle speed control} |
| Display label | for idle speed control |
| Total patents | 56 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 3 |
| 2017 | 12 |
| 2018 | 8 |
| 2019 | 8 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 5 |
| 2023 | 4 |
| 2024 | 3 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Engine device
US-2025290465-A1 · Sep 18, 2025 · US
Torque compensation for air/fuel switching
US-2024280063-A1 · Aug 22, 2024 · US
Method for operating an idling control device, an idling control device and a motor vehicle
US-11981318-B2 · May 14, 2024 · US
Test kit for executing a sequence of individual cylinder tests
US-11898933-B2 · Feb 13, 2024 · US
Engine idle speed control
US-11846240-B2 · Dec 19, 2023 · US
Engine idle reduction control apparatus
US-11639692-B2 · May 2, 2023 · US
Hybrid vehicle engine idling control
US-2023083854-A1 · Mar 16, 2023 · US
Engine idle speed control
US-2023068919-A1 · Mar 2, 2023 · US
Test kit for testing an internal combustion engine
US-2022381648-A1 · Dec 1, 2022 · US
Engine idle reduction control apparatus
US-2022307431-A1 · Sep 29, 2022 · US
NVH management in diesel CDA modes
US-11371450-B2 · Jun 28, 2022 · US
Engine idle speed optimization
US-11313302-B1 · Apr 26, 2022 · US
Fuel control
US-11268470-B2 · Mar 8, 2022 · US
Method for operating an idling control device, an idling control device and a motor vehicle
US-2021237711-A1 · Aug 5, 2021 · US
Improved Fuel Control
US-2021231073-A1 · Jul 29, 2021 · US
Systems and methods for determining irregular fuel requests during engine idle conditions
US-10801433-B2 · Oct 13, 2020 · US
Apparatus for controlling engine idle and uses thereof
US-10760511-B2 · Sep 1, 2020 · US
Vehicular breather device
US-10753454-B2 · Aug 25, 2020 · US
Apparatus for controlling engine idle and uses therof
US-2019383226-A1 · Dec 19, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02D31/008?
- CPC F02D31/008 is the Cooperative Patent Classification code for “for idle speed control.”
- How many patents are filed under CPC F02D31/008 (for idle speed control)?
- Our database includes 56 publications tagged with this CPC code.
- Is patent activity under CPC F02D31/008 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).