F02D 41/0055
Special engine operating conditions
Official title: {Special engine operating conditions, e.g. for regeneration of exhaust gas treatment apparatus}
F02D41/0055 (Special engine operating conditions) appears on 633 US grants and 636 published applications in this corpus.
Search patents in F02D- Granted patents
- 633
- Published applications
- 636
- Assignees
- 139
- Inventors
- 1,375
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 6 | 0 |
| 2000 | 6 | 0 |
| 2001 | 5 | 6 |
| 2002 | 9 | 13 |
| 2003 | 7 | 16 |
| 2004 | 15 | 18 |
| 2005 | 21 | 28 |
| 2006 | 22 | 10 |
| 2007 | 14 | 19 |
| 2008 | 9 | 26 |
| 2009 | 14 | 29 |
| 2010 | 14 | 21 |
| 2011 | 22 | 40 |
| 2012 | 25 | 27 |
| 2013 | 24 | 50 |
| 2014 | 30 | 26 |
| 2015 | 42 | 58 |
| 2016 | 44 | 39 |
| 2017 | 37 | 37 |
| 2018 | 34 | 39 |
| 2019 | 43 | 34 |
| 2020 | 41 | 21 |
| 2021 | 34 | 22 |
| 2022 | 31 | 23 |
| 2023 | 19 | 14 |
| 2024 | 11 | 11 |
| 2025 | 11 | 7 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sensor system and method14 Jul 2026US 12,680,516 B2Transportation IP Holdings, LLC
- Method to perform rebreathe mode transitions17 Feb 2026US 12,553,398 B2Saudi Arabian Oil Company
- Exhaust gas recirculation and aftertreatment control30 Dec 2025US 12,510,036 B2Perkins Engines Company Limited
- Systems and methods of cylinder deactivation in high-temperature mixing-controlled engines16 Dec 2025US 12,497,926 B2Climate Energy Investments, LLC
- Intake and exhaust system28 Oct 2025US 12,454,923 B2Subaru Corporation
- Method for limiting a suction of oil into an internal combustion engine10 Sep 2026US 2026/0266235 A1Schaeffler Technologies AG & Co. KG
- Method to perform rebreathe mode transitions1 Jan 2026US 2026/0002481 A1Aramco Services Company
- Engine controller25 Dec 2025US 2025/0389232 A1Subaru Corporation
- Exhaust Moderated Optimized Combustion Intake4 Dec 2025US 2025/0369403 A1
- Systems and methods for zero nox emissions during an operating period30 Oct 2025US 2025/0334091 A1Cummins Inc.
Most cited
By later US patents
- Method for regenerating a diesel particulate filter118US 6,594,990 B2Ford Global Technologies, LLC · 2003
- Exhaust purification device for internal combustion engine116US 6,237,330 B1Nissan Motor Co., Ltd. · 2001
- Method and apparatus for operating a diesel engine109US 5,771,686 AMercedes-Benz AG · 1998
- Device for purifying the exhaust gas of a diesel engine85US 5,711,149 AToyota Jidosha Kabushiki Kaisha · 1998
- Air-fuel ratio control system for internal combustion engines81US 5,724,808 AHonda Giken Kogyo Kabushiki Kaisha · 1998