F02D 41/14
Introducing closed-loop corrections
F02D41/14 (Introducing closed-loop corrections) appears on 11,938 US grants and 9,707 published applications in this corpus.
Search patents in F02D- Granted patents
- 11,938
- Published applications
- 9,707
- Assignees
- 1,191
- Inventors
- 14,805
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 31 | 0 |
| 1977 | 51 | 0 |
| 1978 | 81 | 0 |
| 1979 | 78 | 0 |
| 1980 | 70 | 0 |
| 1981 | 57 | 0 |
| 1982 | 53 | 0 |
| 1983 | 78 | 0 |
| 1984 | 95 | 0 |
| 1985 | 93 | 0 |
| 1986 | 67 | 0 |
| 1987 | 107 | 0 |
| 1988 | 105 | 0 |
| 1989 | 90 | 0 |
| 1990 | 102 | 0 |
| 1991 | 103 | 0 |
| 1992 | 120 | 0 |
| 1993 | 113 | 0 |
| 1994 | 111 | 0 |
| 1995 | 122 | 0 |
| 1996 | 120 | 0 |
| 1997 | 166 | 0 |
| 1998 | 212 | 0 |
| 1999 | 188 | 0 |
| 2000 | 221 | 0 |
| 2001 | 256 | 78 |
| 2002 | 290 | 305 |
| 2003 | 329 | 369 |
| 2004 | 348 | 376 |
| 2005 | 334 | 366 |
| 2006 | 356 | 339 |
| 2007 | 330 | 405 |
| 2008 | 268 | 383 |
| 2009 | 244 | 471 |
| 2010 | 324 | 407 |
| 2011 | 332 | 455 |
| 2012 | 347 | 423 |
| 2013 | 395 | 498 |
| 2014 | 386 | 395 |
| 2015 | 412 | 514 |
| 2016 | 444 | 536 |
| 2017 | 523 | 540 |
| 2018 | 562 | 559 |
| 2019 | 601 | 471 |
| 2020 | 521 | 485 |
| 2021 | 511 | 366 |
| 2022 | 414 | 312 |
| 2023 | 291 | 221 |
| 2024 | 239 | 168 |
| 2025 | 169 | 137 |
| 2026 | 78 | 128 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Engine control system, method for controlling a dual fuel engine, and non-transitory computer-readable medium6 Oct 2026US 12,753,726 B2Cummins Power Generation Inc.
- Apparatus and method for lambda control of spark-ignition engines, and motor vehicle29 Sep 2026US 12,747,711 B2Schaeffler Technologies AG & Co. KG
- Internal combustion engine system15 Sep 2026US 12,736,016 B2Toyota Jidosha Kabushiki Kaisha
- Input control based on atmospheric oxygen15 Sep 2026US 12,736,509 B2
- Heat management system and heat management method of an internal combustion engine1 Sep 2026US 12,723,535 B2Ino8 Pty Ltd.
- Method for controlling the rotation of a vehicle engine camshaft1 Oct 2026US 2026/0298165 A1Schaeffler Technologies AG & Co. KG
- Controller and control method1 Oct 2026US 2026/0298166 A1Toyota Jidosha Kabushiki Kaisha
- Knocking prediction method, knocking prediction device, engine control device, vehicle, combustion device design method, power generation device design method, vehicle design method, and fuel design method1 Oct 2026US 2026/0298168 A1Tohoku University
- Input control based on atmospheric oxygen1 Oct 2026US 2026/0298898 A1
- Method for detecting tuning measures on an internal combustion engine, computer program product, and control unit24 Sep 2026US 2026/0286914 A1
Most cited
By later US patents
- Virtual continuous emission monitoring system with sensor validation382US 5,386,373 APavilion Technologies, Inc. · 1995
- Intelligent control with hierarchical stacked neural networks273US 9,015,093 B12015
- Virtual emissions monitor for automobile and associated control system215US 5,682,317 APavilion Technologies, Inc. · 1997
- Internal combustion engine control for improved fuel efficiency214US 8,099,224 B2Tula Technology, Inc. · 2012
- Internal combustion engine control for improved fuel efficiency208US 7,577,511 B1Tula Technology, Inc. · 2009