Control apparatus for internal combustion engine
US-10161321-B2 · Dec 25, 2018 · US
changing valve lift or valve lift and timing
changing valve lift or valve lift and timing · 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 | F02D13/0246 |
| Official title | {changing valve lift or valve lift and timing} |
| Display label | changing valve lift or valve lift and timing |
| Total patents | 147 |
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 | 10 |
| 2016 | 18 |
| 2017 | 12 |
| 2018 | 25 |
| 2019 | 16 |
| 2020 | 19 |
| 2021 | 14 |
| 2022 | 18 |
| 2023 | 8 |
| 2024 | 4 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and methods for a split exhaust engine system
US-10161324-B2 · Dec 25, 2018 · US
Methods and systems for a blow-off line
US-2018355824-A1 · Dec 13, 2018 · US
Methods and systems for boost and EGR control
US-10145320-B1 · Dec 4, 2018 · US
Method for Assisted Upshifting and Device for this Purpose
US-2018334975-A1 · Nov 22, 2018 · US
Method for cleaning continuously variable valve timing system
US-2018298815-A1 · Oct 18, 2018 · US
Systems and methods for a split exhaust engine system
US-10094310-B2 · Oct 9, 2018 · US
Partial deactivation of an internal combustion engine
US-10087859-B2 · Oct 2, 2018 · US
Exhaust turbine power generating system
US-2018245497-A1 · Aug 30, 2018 · US
Systems and methods for a split exhaust engine system
US-10024255-B2 · Jul 17, 2018 · US
Systems and methods for a split exhaust engine system
US-2018171904-A1 · Jun 21, 2018 · US
Systems and methods for a split exhaust engine system
US-2018171906-A1 · Jun 21, 2018 · US
Systems and methods for a split exhaust engine system
US-2018171913-A1 · Jun 21, 2018 · US
Systems and methods for a split exhaust engine system
US-2018170353-A1 · Jun 21, 2018 · US
Systems and methods for a split exhaust engine system
US-2018171887-A1 · Jun 21, 2018 · US
Systems and methods for a split exhaust engine system
US-2018171908-A1 · Jun 21, 2018 · US
Internal combustion engine
US-9970378-B2 · May 15, 2018 · US
Method and control device for operating an internal combustion engine
US-9938891-B2 · Apr 10, 2018 · US
Method and control device for operating an internal combustion engine
US-9915193-B2 · Mar 13, 2018 · US
Method for diagnosing and controlling two-step exhaust variable valve lift system and vehicle provided with the same method
US-2018058360-A1 · Mar 1, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02D13/0246?
- CPC F02D13/0246 is the Cooperative Patent Classification code for “changing valve lift or valve lift and timing.”
- How many patents are filed under CPC F02D13/0246 (changing valve lift or valve lift and timing)?
- Our database includes 147 publications tagged with this CPC code.
- Is patent activity under CPC F02D13/0246 growing?
- Publication counts under this code: 4 in 2024 vs 3 in 2025 (latest complete years).