F02B 3/06
Engines characterised by air compression and subsequent fuel addition: with compression ignition
Official title: with compression ignition (compression ignition engines using air or gas for blowing fuel into compressed air in cylinder F02B13/02)
F02B3/06 (Engines characterised by air compression and subsequent fuel addition: with compression ignition) appears on 5,758 US grants and 1,073 published applications in this corpus.
Search patents in F02B- Granted patents
- 5,758
- Published applications
- 1,073
- Assignees
- 1,412
- Inventors
- 7,915
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 110 | 0 |
| 1977 | 114 | 0 |
| 1978 | 136 | 0 |
| 1979 | 105 | 0 |
| 1980 | 134 | 0 |
| 1981 | 186 | 0 |
| 1982 | 181 | 0 |
| 1983 | 245 | 0 |
| 1984 | 304 | 0 |
| 1985 | 288 | 0 |
| 1986 | 210 | 0 |
| 1987 | 191 | 0 |
| 1988 | 196 | 0 |
| 1989 | 228 | 0 |
| 1990 | 227 | 0 |
| 1991 | 241 | 0 |
| 1992 | 242 | 0 |
| 1993 | 207 | 0 |
| 1994 | 234 | 0 |
| 1995 | 187 | 0 |
| 1996 | 191 | 0 |
| 1997 | 144 | 0 |
| 1998 | 132 | 0 |
| 1999 | 102 | 0 |
| 2000 | 109 | 0 |
| 2001 | 106 | 22 |
| 2002 | 94 | 100 |
| 2003 | 104 | 107 |
| 2004 | 102 | 123 |
| 2005 | 80 | 83 |
| 2006 | 69 | 62 |
| 2007 | 67 | 62 |
| 2008 | 38 | 51 |
| 2009 | 33 | 48 |
| 2010 | 32 | 39 |
| 2011 | 37 | 43 |
| 2012 | 23 | 27 |
| 2013 | 26 | 38 |
| 2014 | 33 | 23 |
| 2015 | 30 | 54 |
| 2016 | 39 | 26 |
| 2017 | 42 | 26 |
| 2018 | 35 | 24 |
| 2019 | 19 | 24 |
| 2020 | 27 | 33 |
| 2021 | 22 | 17 |
| 2022 | 11 | 8 |
| 2023 | 18 | 14 |
| 2024 | 13 | 8 |
| 2025 | 9 | 8 |
| 2026 | 5 | 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.
- Stratified nitrogen enriched air (NEA) strategies and methods to reduce NOx emissions from engines12 May 2026US 12,624,654 B2Saudi Arabian Oil Company
- Cylinder deactivation expanded operational range with additional air source integrated with turbocharger13 Jan 2026US 12,523,184 B2PACCAR Inc
- Diesel engine6 Jan 2026US 12,516,645 B2Kubota Corporation
- 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