F02D 41/0077
Control of the egr valve or actuator
Official title: {Control of the EGR valve or actuator, e.g. duty cycle, closed loop control of position (EGR valve position sensor F02M26/48)}
F02D41/0077 (Control of the egr valve or actuator) appears on 587 US grants and 550 published applications in this corpus.
Search patents in F02D- Granted patents
- 587
- Published applications
- 550
- Assignees
- 136
- Inventors
- 1,196
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 8 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 11 | 0 |
| 1985 | 7 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 7 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 7 | 2 |
| 2002 | 5 | 4 |
| 2003 | 4 | 1 |
| 2004 | 2 | 5 |
| 2005 | 3 | 4 |
| 2006 | 5 | 5 |
| 2007 | 6 | 5 |
| 2008 | 2 | 3 |
| 2009 | 3 | 4 |
| 2010 | 2 | 5 |
| 2011 | 4 | 6 |
| 2012 | 2 | 22 |
| 2013 | 9 | 28 |
| 2014 | 12 | 30 |
| 2015 | 20 | 42 |
| 2016 | 35 | 52 |
| 2017 | 49 | 56 |
| 2018 | 70 | 80 |
| 2019 | 67 | 70 |
| 2020 | 73 | 37 |
| 2021 | 48 | 28 |
| 2022 | 36 | 27 |
| 2023 | 25 | 17 |
| 2024 | 11 | 6 |
| 2025 | 7 | 7 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Engine control system and methods16 Apr 2026US 2026/0104015 A1Innio Waukesha Gas Engines Inc.
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Most cited
By later US patents
- Exhaust gas recirculation system for a compression ignition engine and a method of controlling exhaust gas recirculation in a compression ignition engine75US 5,520,161 AAlternative Fuel Sytems Inc. · 1996
- Intelligent electric actuator for control of a turbocharger with an integrated exhaust gas recirculation valve71US 6,360,541 B1Honeywell International Inc. · 2002
- Closed loop exhaust gas recirculation control system62US 4,142,493 AThe Bendix Corporation · 1979
- Exhaust gas recirculation control system for an internal combustion engine53US 4,161,929 AToyota Jidosha Kogyo Kabushiki Kaisha · 1979
- Air valve and method of use46US 7,591,245 B2Holley Performance Products, Inc. · 2009