F02D 41/0065
Specific aspects of external egr control
Official title: {Specific aspects of external EGR control (constructional details of EGR system F02M26/00)}
F02D41/0065 (Specific aspects of external egr control) appears on 1,510 US grants and 1,412 published applications in this corpus.
Search patents in F02D- Granted patents
- 1,510
- Published applications
- 1,412
- Assignees
- 236
- Inventors
- 2,589
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 6 | 0 |
| 1983 | 5 | 0 |
| 1984 | 12 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 9 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 14 | 0 |
| 1997 | 7 | 0 |
| 1998 | 11 | 0 |
| 1999 | 17 | 0 |
| 2000 | 37 | 0 |
| 2001 | 33 | 7 |
| 2002 | 31 | 47 |
| 2003 | 40 | 47 |
| 2004 | 37 | 28 |
| 2005 | 37 | 34 |
| 2006 | 47 | 58 |
| 2007 | 48 | 46 |
| 2008 | 38 | 51 |
| 2009 | 28 | 64 |
| 2010 | 41 | 58 |
| 2011 | 47 | 71 |
| 2012 | 43 | 72 |
| 2013 | 49 | 70 |
| 2014 | 60 | 82 |
| 2015 | 72 | 108 |
| 2016 | 110 | 92 |
| 2017 | 94 | 77 |
| 2018 | 92 | 101 |
| 2019 | 85 | 91 |
| 2020 | 107 | 77 |
| 2021 | 80 | 40 |
| 2022 | 55 | 38 |
| 2023 | 37 | 24 |
| 2024 | 23 | 12 |
| 2025 | 12 | 12 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and method for adaptive control of air-to-fuel ratio18 Aug 2026US 12,710,014 B2Caterpillar Inc.
- Sensor system and method14 Jul 2026US 12,680,516 B2Transportation IP Holdings, LLC
- Engine system3 Mar 2026US 12,565,869 B2Mazda Motor Corporation
- Exhaust gas recirculation and aftertreatment control30 Dec 2025US 12,510,036 B2Perkins Engines Company Limited
- Internal combustion engine and method for operating an internal combustion engine18 Nov 2025US 12,473,870 B2Innio Jenbacher GmbH & Co OG
- Exhaust gas recirculation system, engine system, control method of exhaust gas recirculation system, and control program1 Oct 2026US 2026/0298182 A1Yanmar Holdings Co., Ltd.
- Exhaust monitoring apparatus6 Aug 2026US 2026/0226858 A1Toyota Jidosha Kabushiki Kaisha
- System and method for adaptive control of air-to-fuel ratio18 Jun 2026US 2026/0168452 A1Caterpillar Inc.
- Exhaust gas recirculation system23 Apr 2026US 2026/0110282 A1Kabushiki Kaisha Toyota Jidoshokki
- Engine control system and methods16 Apr 2026US 2026/0104015 A1Innio Waukesha Gas Engines Inc.
Most cited
By later US patents
- Twin turbine exhaust gas re-circulation system having a second stage variable nozzle turbine120US 6,412,279 B1Caterpillar Inc. · 2002
- System and method for monitoring and detecting faults in a closed-loop system118US 8,700,360 B2Cummins Intellectual Properties, Inc. · 2014
- Control method for a variable geometry turbocharger in a diesel engine having exhaust gas recirculation107US 6,067,800 AFord Global Technologies, LLC · 2000
- Control system98US 7,016,779 B2Cambridge Consultants Limited · 2006
- Method and system for using a measure of fueling rate in the air side control of an engine96US 7,591,135 B2Honeywell International Inc. · 2009