F02M 26/00
Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air
Official title: Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
F02M26/00 (Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air) appears on 6,882 US grants and 6,431 published applications in this corpus.
Search patents in F02M- Granted patents
- 6,882
- Published applications
- 6,431
- Assignees
- 978
- Inventors
- 10,202
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 45 | 0 |
| 1977 | 61 | 0 |
| 1978 | 79 | 0 |
| 1979 | 73 | 0 |
| 1980 | 90 | 0 |
| 1981 | 82 | 0 |
| 1982 | 62 | 0 |
| 1983 | 54 | 0 |
| 1984 | 58 | 0 |
| 1985 | 32 | 0 |
| 1986 | 22 | 0 |
| 1987 | 38 | 0 |
| 1988 | 25 | 0 |
| 1989 | 21 | 0 |
| 1990 | 20 | 0 |
| 1991 | 19 | 0 |
| 1992 | 29 | 0 |
| 1993 | 42 | 0 |
| 1994 | 36 | 0 |
| 1995 | 29 | 0 |
| 1996 | 49 | 0 |
| 1997 | 53 | 0 |
| 1998 | 55 | 0 |
| 1999 | 76 | 0 |
| 2000 | 120 | 0 |
| 2001 | 158 | 61 |
| 2002 | 168 | 145 |
| 2003 | 146 | 186 |
| 2004 | 173 | 223 |
| 2005 | 216 | 241 |
| 2006 | 212 | 223 |
| 2007 | 188 | 278 |
| 2008 | 161 | 290 |
| 2009 | 136 | 288 |
| 2010 | 186 | 298 |
| 2011 | 213 | 352 |
| 2012 | 191 | 291 |
| 2013 | 233 | 342 |
| 2014 | 266 | 444 |
| 2015 | 338 | 441 |
| 2016 | 361 | 439 |
| 2017 | 395 | 335 |
| 2018 | 391 | 361 |
| 2019 | 348 | 335 |
| 2020 | 330 | 288 |
| 2021 | 282 | 191 |
| 2022 | 216 | 130 |
| 2023 | 144 | 99 |
| 2024 | 75 | 60 |
| 2025 | 55 | 53 |
| 2026 | 30 | 37 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F02M 26/13Arrangement or layout of egr passages4,315
- F02M 26/02Egr systems specially adapted for supercharged engines2,874
- F02M 26/52Systems for actuating egr valves1,443
- F02M 26/45Sensors specially adapted for egr systems1,001
- F02M 26/65Constructional details of egr valves908
- F02M 26/01Internal exhaust gas recirculation, i.e. wherein the residual exhaust gases are trapped640
- F02M 26/49Detecting, diagnosing or indicating an abnormal function of the egr system385
- F02M 2026/001ArrangementsIndexing code334
All 12 subgroupsShow fewer
- F02M 26/50Arrangements or methods for preventing or reducing deposits, corrosion or wear caused248
- F02M 26/11Manufacture or assembly of egr systems135
- F02M 26/12Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air122
- F02M 26/51Egr valves combined with other devices92
Recent patents
- Multi-barrel exhaust gas recirculation mixer6 Oct 2026US 12,753,732 B2Woodward, Inc.
- Soot-less exhaust gas recirculation (EGR) system22 Sep 2026US 12,742,434 B1
- Engine system components including catalytic coatings and related apparatuses, methods, systems, and techniques15 Sep 2026US 12,736,020 B2Cummins Inc.
- Engine system25 Aug 2026US 12,716,395 B2Volvo Truck Corporation
- Mild-hybrid electric vehicle (MHEV) emissions aftertreatment system18 Aug 2026US 12,710,025 B2Saudi Arabian Oil Company
- Failure detection device for exhaust gas recirculation device8 Oct 2026US 2026/0309108 A1Mitsubishi Jidosha Kogyo Kabushiki Kaisha
- Exhaust gas recirculation system, engine system, control method of exhaust gas recirculation system, and control program1 Oct 2026US 2026/0298182 A1Yanmar Holdings Co., Ltd.
- Multi-stage emission system for large displacement compression ignition non-road diesel, diesel-natural gas or alternative fuel mixture generator systems for emergency and non-emergency stationary power applications17 Sep 2026US 2026/0275892 A1Bluefin ESI, Inc.
- System and method for controlled heat exchanger swapping17 Sep 2026US 2026/0275893 A1Innio Waukesha Gas Engines Inc.
- Spark ignition engine and method for operating spark ignition engine17 Sep 2026US 2026/0275932 A1Mazda Motor Corporation
Most cited
By later US patents
- Turbocharging systems for internal combustion engines208US 5,771,868 ATurbodyne Systems, Inc. · 1998
- Exhaust gas control using a spark plug ionization signal198US 6,980,903 B2Visteon Global Technologies, Inc. · 2005
- Turbocharging systems for internal combustion engines197US 6,062,026 ATurbodyne Systems, Inc. · 2000
- Premixed charge compression ignition engine with optimal combustion control196US 6,276,334 B1Cummins Engine Company, Inc. · 2001
- Valve selection for an engine operating in a multi-stroke cylinder mode179US 7,063,062 B2Ford Global Technologies, LLC · 2006