Fuel estimation apparatus
US-9845761-B2 · Dec 19, 2017 · US
Control for minimising smoke emissions, e.g. by applying smoke limitations on the fuel injection amount
Control for minimising smoke emissions, e.g. by applying smoke limitations on the fuel injection amount · 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 | F02D2250/38 |
| Official title | Control for minimising smoke emissions, e.g. by applying smoke limitations on the fuel injection amount |
| Display label | Control for minimising smoke emissions, e.g. by applying smoke limitations on the fuel injection amount |
| Total patents | 188 |
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 | 13 |
| 2016 | 21 |
| 2017 | 30 |
| 2018 | 23 |
| 2019 | 31 |
| 2020 | 29 |
| 2021 | 16 |
| 2022 | 13 |
| 2023 | 5 |
| 2024 | 4 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Combustion system controller
US-9845755-B2 · Dec 19, 2017 · US
Control apparatus
US-2017356351-A1 · Dec 14, 2017 · US
Controlled air entrainment passage for diesel engines
US-2017350308-A1 · Dec 7, 2017 · US
Control apparatus for internal combustion engine
US-2017284282-A1 · Oct 5, 2017 · US
Control device of engine
US-9777694-B2 · Oct 3, 2017 · US
Altitude fuel limiter for engine and method of using the same
US-9765708-B2 · Sep 19, 2017 · US
Engine control system for reducing particulate matter
US-2017254286-A1 · Sep 7, 2017 · US
Control unit for a combustion engine
US-2017248091-A1 · Aug 31, 2017 · US
Engine controller
US-2017234252-A1 · Aug 17, 2017 · US
Fuel limiter for a uniflow-scavanged, two-stroke cycle, opposed-piston engine
US-2017204790-A1 · Jul 20, 2017 · US
Control device for internal combustion engine
US-9702311-B2 · Jul 11, 2017 · US
Engine intake system and method for operating same
US-9695786-B2 · Jul 4, 2017 · US
System and method for adjusting fuel injection parameters during transient events to reduce particulate emissions
US-9695772-B2 · Jul 4, 2017 · US
Direct injection internal combustion engine
US-2017184046-A1 · Jun 29, 2017 · US
Control device for internal combustion engine
US-2017184036-A1 · Jun 29, 2017 · US
Fuel Injection System and Method
US-2017175664-A1 · Jun 22, 2017 · US
Control device for internal combustion engine
US-2017167461-A1 · Jun 15, 2017 · US
System and method for controlling an engine to remove soot deposits from the fuel injectors of the engine
US-2017159630-A1 · Jun 8, 2017 · US
Control apparatus for internal combustion engine
US-2017107932-A1 · Apr 20, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02D2250/38?
- CPC F02D2250/38 is the Cooperative Patent Classification code for “Control for minimising smoke emissions, e.g. by applying smoke limitations on the fuel injection amount.”
- How many patents are filed under CPC F02D2250/38 (Control for minimising smoke emissions, e.g. by applying smoke limitations on the fuel injection amount)?
- Our database includes 188 publications tagged with this CPC code.
- Is patent activity under CPC F02D2250/38 growing?
- Publication counts under this code: 4 in 2024 vs 2 in 2025 (latest complete years).