F02D 41/1479
Using a comparator with variable reference
Official title: {Using a comparator with variable reference}
F02D41/1479 (Using a comparator with variable reference) appears on 187 US grants and 56 published applications in this corpus.
Search patents in F02D- Granted patents
- 187
- Published applications
- 56
- Assignees
- 70
- Inventors
- 353
- Latest grant
- 25 Jul 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 8 | 0 |
| 1979 | 11 | 0 |
| 1980 | 13 | 0 |
| 1981 | 4 | 0 |
| 1982 | 6 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 8 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 7 | 0 |
| 1989 | 5 | 0 |
| 1990 | 7 | 0 |
| 1991 | 4 | 0 |
| 1992 | 8 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 2 |
| 2002 | 4 | 2 |
| 2003 | 5 | 6 |
| 2004 | 6 | 12 |
| 2005 | 6 | 5 |
| 2006 | 9 | 3 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 1 | 2 |
| 2012 | 0 | 1 |
| 2013 | 1 | 4 |
| 2014 | 2 | 0 |
| 2015 | 3 | 2 |
| 2016 | 1 | 3 |
| 2017 | 5 | 2 |
| 2018 | 1 | 4 |
| 2019 | 5 | 1 |
| 2020 | 5 | 5 |
| 2021 | 2 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- System and method for controlling fuel supplied to an engine25 Jul 2023US 11,708,800 B2Ford Global Technologies, LLC
- Method and system for determining an amount of a substance in exhaust gas of an internal combustion engine2 Mar 2021US 10,934,957 B2Perkins Engines Company Limited
- Abnormality diagnosis device for in-cylinder pressure sensor2 Mar 2021US 10,934,962 B2Mazda Motor Corporation
- Exhaust system for internal combustion engine15 Dec 2020US 10,865,725 B2Toyota Jidosha Kabushiki Kaisha
- Catalyst diagnosis device15 Sep 2020US 10,774,767 B2Honda Motor Co., Ltd.
- System and method for controlling fuel supplied to an engine17 Sep 2020US 2020/0291883 A1Ford Global Technologies, LLC
- Method And System For Determining An Amount Of A Substance In Exhaust Gas Of An Internal Combustion Engine16 Jul 2020US 2020/0224599 A1Perkins Engines Company Limited
- Abnormality diagnosis device for in-cylinder pressure sensor25 Jun 2020US 2020/0200112 A1Mazda Motor Corporation
- Deep reinforcement learning for air handling and fuel system referencing27 Feb 2020US 2020/0063681 A1Cummins Inc.
- Catalyst diagnosis device30 Jan 2020US 2020/0032730 A1Honda Motor Co., Ltd.
Most cited
By later US patents
- Air/fuel ratio feedback control system for lean combustion engine67US 5,009,210 ANissan Motor Co., Ltd. · 1991
- System and method for controlling the air / fuel ratio in an internal combustion engine66US 6,591,605 B2Ford Global Technologies, LLC · 2003
- Internal combustion exhaust catalytic reactor monitoring system61US 4,007,589 ARobert Bosch GmbH · 1977
- Method for controlling engine exhaust gas system56US 6,012,282 ANGK Insulators, Ltd. · 2000
- System and method for determining set point location for oxidant-based engine air/fuel control strategy45US 6,629,409 B2Ford Global Technologies, LLC · 2003