Systems and methods for purge and PCV control
US-9528406-B2 · Dec 27, 2016 · US
with determination means using an estimation
with determination means using an estimation · 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 | F02D41/1458 |
| Official title | {with determination means using an estimation} |
| Display label | with determination means using an estimation |
| Total patents | 289 |
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 | 31 |
| 2017 | 51 |
| 2018 | 49 |
| 2019 | 40 |
| 2020 | 36 |
| 2021 | 28 |
| 2022 | 10 |
| 2023 | 7 |
| 2024 | 4 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods and system for fuel ethanol content estimation and engine control
US-9528448-B2 · Dec 27, 2016 · US
Method and system for torque control
US-2016369724-A1 · Dec 22, 2016 · US
Computer program for operating an internal combustion engine
US-2016363075-A1 · Dec 15, 2016 · US
Method and control unit for determining a dead time of an exhaust gas sensor of an internal combustion engine
US-9518893-B2 · Dec 13, 2016 · US
State-based diesel fueling for improved transient response in dual-fuel engine
US-9518516-B2 · Dec 13, 2016 · US
Method and system for determining air-fuel ratio imbalance via engine torque
US-2016333809-A1 · Nov 17, 2016 · US
Method for controlling the speed of an internal combustion engine
US-2016312726-A1 · Oct 27, 2016 · US
Position Based Air/Fuel Ration Calculation in an Internal Combustion Engine
US-2016258374-A1 · Sep 8, 2016 · US
Methods and systems for an intake oxygen sensor
US-2016245213-A1 · Aug 25, 2016 · US
Methods and system for fuel ethanol content estimation and engine control
US-2016245193-A1 · Aug 25, 2016 · US
EGR operation method and system for increased drivability
US-9422878-B2 · Aug 23, 2016 · US
Control system of engine
US-2016230681-A1 · Aug 11, 2016 · US
Control device for internal combustion engine
US-2016215716-A1 · Jul 28, 2016 · US
Control device for multi-cylinder internal combustion engine
US-9399944-B2 · Jul 26, 2016 · US
State-Based Diesel Fueling For Improved Transient Response In Dual-Fuel Engine
US-2016201592-A1 · Jul 14, 2016 · US
Method to control the temperature of the exhaust gases of a supercharged internal combustion engine
US-2016153331-A1 · Jun 2, 2016 · US
Method and device for correcting a characteristic curve of a two-step lambda oxygen sensor
US-9354213-B2 · May 31, 2016 · US
Method of pre-emptively regenerating a lean nox trap
US-2016123260-A1 · May 5, 2016 · US
Control apparatus for internal combustion engine
US-2016123247-A1 · May 5, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02D41/1458?
- CPC F02D41/1458 is the Cooperative Patent Classification code for “with determination means using an estimation.”
- How many patents are filed under CPC F02D41/1458 (with determination means using an estimation)?
- Our database includes 289 publications tagged with this CPC code.
- Is patent activity under CPC F02D41/1458 growing?
- Publication counts under this code: 4 in 2024 vs 3 in 2025 (latest complete years).