F02D 41/005
According to engine operating conditions
Official title: {according to engine operating conditions}
F02D41/005 (According to engine operating conditions) appears on 2,122 US grants and 2,014 published applications in this corpus.
Search patents in F02D- Granted patents
- 2,122
- Published applications
- 2,014
- Assignees
- 307
- Inventors
- 3,511
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 5 | 0 |
| 1980 | 6 | 0 |
| 1981 | 10 | 0 |
| 1982 | 8 | 0 |
| 1983 | 15 | 0 |
| 1984 | 27 | 0 |
| 1985 | 7 | 0 |
| 1986 | 6 | 0 |
| 1987 | 4 | 0 |
| 1988 | 12 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 13 | 0 |
| 1993 | 12 | 0 |
| 1994 | 11 | 0 |
| 1995 | 8 | 0 |
| 1996 | 13 | 0 |
| 1997 | 12 | 0 |
| 1998 | 17 | 0 |
| 1999 | 19 | 0 |
| 2000 | 39 | 0 |
| 2001 | 35 | 15 |
| 2002 | 29 | 43 |
| 2003 | 41 | 52 |
| 2004 | 52 | 60 |
| 2005 | 48 | 65 |
| 2006 | 70 | 57 |
| 2007 | 55 | 63 |
| 2008 | 41 | 65 |
| 2009 | 34 | 64 |
| 2010 | 42 | 54 |
| 2011 | 51 | 105 |
| 2012 | 57 | 92 |
| 2013 | 69 | 120 |
| 2014 | 78 | 129 |
| 2015 | 111 | 166 |
| 2016 | 141 | 142 |
| 2017 | 150 | 133 |
| 2018 | 149 | 147 |
| 2019 | 144 | 131 |
| 2020 | 160 | 92 |
| 2021 | 102 | 61 |
| 2022 | 79 | 57 |
| 2023 | 50 | 41 |
| 2024 | 38 | 23 |
| 2025 | 24 | 27 |
| 2026 | 9 | 10 |
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.
- Fuel agnostic compression ignition engine18 Aug 2026US 12,710,015 B2Climate Energy Investments, LLC
- System and method for adaptive control of ammonia-NOx ratio28 Jul 2026US 12,692,810 B2Caterpillar Inc.
- Sensor system and method14 Jul 2026US 12,680,516 B2Transportation IP Holdings, LLC
- System and method for injecting condensate in cylinder of a reciprocating engine21 Apr 2026US 12,607,151 B2Innio Jenbacher GmbH & Co OG
- Multi-fuel engine system and method for controlling same8 Oct 2026US 2026/0309102 A1Hd Hyundai Heavy Industries Co., Ltd.
- Method for limiting a suction of oil into an internal combustion engine10 Sep 2026US 2026/0266235 A1Schaeffler Technologies AG & Co. KG
- System and method for adaptive control of ammonia-nox ratio18 Jun 2026US 2026/0168418 A1Caterpillar Inc.
- Combustion control method and combustion control device for hot blast stove18 Jun 2026US 2026/0168451 A1Jfe Steel Corporation
- System and method for adaptive control of air-to-fuel ratio18 Jun 2026US 2026/0168452 A1Caterpillar Inc.
Most cited
By later US patents
- Exhaust gas control using a spark plug ionization signal198US 6,980,903 B2Visteon Global Technologies, Inc. · 2005
- 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
- Control system for exhaust gas recovery system in an internal combustion engine151US 5,771,867 ACaterpillar Inc. · 1998
- Low emission, diesel-cycle engine146US 6,301,888 B1The United States of America as represented by the Administrator of the Environmental Protection Agency · 2001
- Multivariable control for an engine131US 7,328,577 B2Honeywell International Inc. · 2008