F02D 41/1444
Characterised by the characteristics of the combustion gases
Official title: {characterised by the characteristics of the combustion gases}
F02D41/1444 (Characterised by the characteristics of the combustion gases) appears on 5,445 US grants and 5,030 published applications in this corpus.
Search patents in F02D- Granted patents
- 5,445
- Published applications
- 5,030
- Assignees
- 678
- Inventors
- 7,910
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 14 | 0 |
| 1978 | 14 | 0 |
| 1979 | 12 | 0 |
| 1980 | 19 | 0 |
| 1981 | 12 | 0 |
| 1982 | 7 | 0 |
| 1983 | 16 | 0 |
| 1984 | 14 | 0 |
| 1985 | 9 | 0 |
| 1986 | 10 | 0 |
| 1987 | 18 | 0 |
| 1988 | 31 | 0 |
| 1989 | 23 | 0 |
| 1990 | 20 | 0 |
| 1991 | 17 | 0 |
| 1992 | 25 | 0 |
| 1993 | 29 | 0 |
| 1994 | 20 | 0 |
| 1995 | 33 | 0 |
| 1996 | 41 | 0 |
| 1997 | 53 | 0 |
| 1998 | 82 | 0 |
| 1999 | 72 | 0 |
| 2000 | 82 | 0 |
| 2001 | 109 | 39 |
| 2002 | 132 | 150 |
| 2003 | 144 | 206 |
| 2004 | 184 | 182 |
| 2005 | 164 | 159 |
| 2006 | 163 | 150 |
| 2007 | 137 | 197 |
| 2008 | 122 | 178 |
| 2009 | 118 | 210 |
| 2010 | 156 | 186 |
| 2011 | 145 | 233 |
| 2012 | 167 | 237 |
| 2013 | 199 | 269 |
| 2014 | 215 | 213 |
| 2015 | 232 | 278 |
| 2016 | 242 | 324 |
| 2017 | 293 | 301 |
| 2018 | 308 | 297 |
| 2019 | 332 | 263 |
| 2020 | 293 | 253 |
| 2021 | 274 | 191 |
| 2022 | 211 | 151 |
| 2023 | 152 | 125 |
| 2024 | 139 | 91 |
| 2025 | 94 | 69 |
| 2026 | 38 | 78 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F02D 41/1454The characteristics being an oxygen content or concentration or the air-fuel ratio2,940
- F02D 41/1446The characteristics being exhaust temperatures1,361
- F02D 41/146The characteristics being an nox content or concentration809
- F02D 41/1448The characteristics being an exhaust gas pressure662
- F02D 41/1466The characteristics being a soot concentration or content316
- F02D 41/1445The characteristics being related to the exhaust flow216
- F02D 2041/1468The characteristics being an ammonia content or concentration of the exhaust gasesIndexing code110
- F02D 41/1452The characteristics being a cox content or concentration105
All 12 subgroupsShow fewer
- F02D 41/1459The characteristics being a hydrocarbon content or concentration100
- F02D 2041/1472The characteristics being a humidity or water content of the exhaust gasesIndexing code71
- F02D 41/1451The sensor being an optical sensor47
- F02D 2041/147The characteristics being a hydrogen content or concentration of the exhaust gasesIndexing code36
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
- Control device for internal combustion engine25 Aug 2026US 12,716,393 B2Toyota Jidosha Kabushiki Kaisha
- Controller and control method1 Oct 2026US 2026/0298166 A1Toyota Jidosha Kabushiki Kaisha
- Input control based on atmospheric oxygen1 Oct 2026US 2026/0298898 A1
- Methods and systems for controlling an engine following a fuel cut-off event17 Sep 2026US 2026/0275929 A1Ford Global Technologies, LLC
- Internal combustion engine17 Sep 2026US 2026/0275930 A1
- Control Device10 Sep 2026US 2026/0266236 A1Astemo, Ltd.
Most cited
By later US patents
- Internal combustion engine control for improved fuel efficiency208US 7,577,511 B1Tula Technology, Inc. · 2009
- Method and apparatus for desulfating a no.sub.x trap176US 5,974,788 AFord Global Technologies, LLC · 1999
- Differential torque operation for internal combustion engine167US 7,503,312 B2Ford Global Technologies, LLC · 2009
- Low emission, diesel-cycle engine158US 6,470,682 B2The United States of America as represented by the Administrator of the United States Environmental Protection Agency · 2002
- Exhaust gas purification apparatus for an internal combustion engine149US 5,402,641 AToyota Jidosha Kabushiki Kaisha · 1995