Exhaust gas purification system for an internal combustion engine
US-2018334978-A1 · Nov 22, 2018 · US
Control of exhaust back pressure, e.g. for turbocharged engines
Control of exhaust back pressure, e.g. for turbocharged engines · 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 | F02D2250/34 |
| Official title | Control of exhaust back pressure, e.g. for turbocharged engines |
| Display label | Control of exhaust back pressure, e.g. for turbocharged engines |
| Total patents | 146 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 15 |
| 2016 | 12 |
| 2017 | 17 |
| 2018 | 17 |
| 2019 | 18 |
| 2020 | 21 |
| 2021 | 11 |
| 2022 | 12 |
| 2023 | 7 |
| 2024 | 5 |
| 2025 | 10 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods and systems for boost control based on exhaust pressure greater than a threshold
US-10119479-B2 · Nov 6, 2018 · US
Internal combustion engine
US-2018291777-A1 · Oct 11, 2018 · US
Engine exhaust device
US-2018283303-A1 · Oct 4, 2018 · US
Vehicle anti-lock exhaust brake control system
US-10087869-B2 · Oct 2, 2018 · US
Control of engine EGR with backpressure control valve
US-10077722-B2 · Sep 18, 2018 · US
Control of engine exhaust backpressure following engine cold-start
US-10066561-B2 · Sep 4, 2018 · US
Control system for turbo-compound system
US-10047666-B2 · Aug 14, 2018 · US
Method for operating an internal combustion engine
US-2018163612-A1 · Jun 14, 2018 · US
Turbocharger and method of operating turbocharger
US-9989002-B2 · Jun 5, 2018 · US
Internal combustion engine having an engine backpressure brake and a compression release engine brake
US-9976509-B2 · May 22, 2018 · US
Controller for supercharger-equipped internal combustion engine and control method thereof
US-9964027-B2 · May 8, 2018 · US
Method and system for controlling engine operations
US-2018119622-A1 · May 3, 2018 · US
Method of forcibly regenerating gasoline particulate filter
US-9957865-B2 · May 1, 2018 · US
Control method for variable geometry exhaust turbine
US-9915197-B2 · Mar 13, 2018 · US
Control device of internal combustion engine
US-2018030884-A1 · Feb 1, 2018 · US
Control of engine exhaust backpressure following engine cold-start
US-2017314486-A1 · Nov 2, 2017 · US
A method and system for preventing oil escape
US-2017284224-A1 · Oct 5, 2017 · US
Vehicle anti-lock exhaust brake control system
US-2017284309-A1 · Oct 5, 2017 · US
Engine
US-9759144-B2 · Sep 12, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02D2250/34?
- CPC F02D2250/34 is the Cooperative Patent Classification code for “Control of exhaust back pressure, e.g. for turbocharged engines.”
- How many patents are filed under CPC F02D2250/34 (Control of exhaust back pressure, e.g. for turbocharged engines)?
- Our database includes 146 publications tagged with this CPC code.
- Is patent activity under CPC F02D2250/34 growing?
- Publication counts under this code: 5 in 2024 vs 10 in 2025 (latest complete years).