F02B 3/00
Engines characterised by air compression and subsequent fuel addition
Official title: Engines characterised by air compression and subsequent fuel addition (characterised by both fuel-air mixture compression and air compression, or characterised by both positive ignition and compression ignition F02B11/00)
F02B3/00 (Engines characterised by air compression and subsequent fuel addition) appears on 5,825 US grants and 1,118 published applications in this corpus.
Search patents in F02B- Granted patents
- 5,825
- Published applications
- 1,118
- Assignees
- 1,428
- Inventors
- 8,009
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 110 | 0 |
| 1977 | 114 | 0 |
| 1978 | 137 | 0 |
| 1979 | 106 | 0 |
| 1980 | 137 | 0 |
| 1981 | 186 | 0 |
| 1982 | 182 | 0 |
| 1983 | 247 | 0 |
| 1984 | 304 | 0 |
| 1985 | 290 | 0 |
| 1986 | 212 | 0 |
| 1987 | 195 | 0 |
| 1988 | 200 | 0 |
| 1989 | 229 | 0 |
| 1990 | 229 | 0 |
| 1991 | 241 | 0 |
| 1992 | 244 | 0 |
| 1993 | 208 | 0 |
| 1994 | 235 | 0 |
| 1995 | 187 | 0 |
| 1996 | 191 | 0 |
| 1997 | 146 | 0 |
| 1998 | 132 | 0 |
| 1999 | 102 | 0 |
| 2000 | 111 | 0 |
| 2001 | 106 | 23 |
| 2002 | 94 | 101 |
| 2003 | 106 | 108 |
| 2004 | 104 | 123 |
| 2005 | 80 | 83 |
| 2006 | 69 | 62 |
| 2007 | 67 | 63 |
| 2008 | 38 | 52 |
| 2009 | 34 | 49 |
| 2010 | 33 | 41 |
| 2011 | 37 | 45 |
| 2012 | 23 | 33 |
| 2013 | 30 | 39 |
| 2014 | 34 | 24 |
| 2015 | 31 | 54 |
| 2016 | 40 | 28 |
| 2017 | 42 | 27 |
| 2018 | 36 | 25 |
| 2019 | 21 | 30 |
| 2020 | 31 | 36 |
| 2021 | 25 | 20 |
| 2022 | 13 | 8 |
| 2023 | 20 | 20 |
| 2024 | 18 | 12 |
| 2025 | 11 | 9 |
| 2026 | 7 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for combusting unconventional fuel chemistries in a diesel engine architecture7 Jul 2026US 12,674,409 B2Climate Energy Investments, LLC
- Port assembly for 2-stroke diesel engine9 Jun 2026US 12,650,106 B2DeltaHawk Engines, Inc.
- Split cycle engine2 Jun 2026US 12,644,406 B2Fpt Industrial S.P.A.
- Stratified nitrogen enriched air (NEA) strategies and methods to reduce NOx emissions from engines12 May 2026US 12,624,654 B2Saudi Arabian Oil Company
- Fuel bypass system for gaseous-fueled engine12 May 2026US 12,624,655 B2Generac Power Systems, Inc.
- Piston for reciprocating within a cylinder in an internal combustion engine18 Jun 2026US 2026/0168460 A1Cummins Inc.
- Fuel system for engine2 Apr 2026US 2026/0092584 A1American CNG, LLC
- Cylinder deactivation expanded operational range with additional air source integrated with turbocharger26 Mar 2026US 2026/0085644 A1PACCAR Inc
- Method of Starting a Compression Ignition Engine11 Sep 2025US 2025/0283443 A1Caterpiltar Inc.
- Stratified nitrogen enriched air (nea) strategies and methods to reduce nox emissions from engines31 Jul 2025US 2025/0243799 A1Saudi Arabian Oil Company
Most cited
By later US patents
- Internal combustion engine1,364US 4,054,108 AGeneral Motors Corporation · 1977
- Diesel particulate trap330US 4,329,162 ACorning Glass Works · 1982
- Production of hydrocarbons with a relatively high cetane rating284US 4,992,605 A1991
- Bi-fuel control system and retrofit assembly for diesel engines231US 6,543,395 B2Gas Technologies LLC · 2003
- Pressure side integrated air filter and filtering networks for engines222US 5,472,463 ACummins Engine Company, Inc. · 1995