F02B 19/1023
Pre-combustion chamber and cylinder being fed with fuel-air mixture
Official title: {pre-combustion chamber and cylinder being fed with fuel-air mixture(s)}
F02B19/1023 (Pre-combustion chamber and cylinder being fed with fuel-air mixture) appears on 254 US grants and 157 published applications in this corpus.
Search patents in F02B- Granted patents
- 254
- Published applications
- 157
- Assignees
- 92
- Inventors
- 411
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 31 | 0 |
| 1977 | 18 | 0 |
| 1978 | 26 | 0 |
| 1979 | 10 | 0 |
| 1980 | 10 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 2 | 2 |
| 2006 | 1 | 1 |
| 2007 | 2 | 3 |
| 2008 | 3 | 2 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 1 | 6 |
| 2013 | 1 | 3 |
| 2014 | 4 | 4 |
| 2015 | 4 | 5 |
| 2016 | 4 | 17 |
| 2017 | 7 | 8 |
| 2018 | 12 | 9 |
| 2019 | 4 | 12 |
| 2020 | 11 | 9 |
| 2021 | 15 | 12 |
| 2022 | 16 | 9 |
| 2023 | 20 | 26 |
| 2024 | 16 | 15 |
| 2025 | 8 | 4 |
| 2026 | 3 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pre-chamber combustion systems and methods11 Aug 2026US 12,704,088 B2M2X Energy Inc.
- Internal combustion engine12 May 2026US 12,624,669 B2Innio Jenbacher GmbH & Co OG
- Assemblies for engines27 Jan 2026US 12,535,029 B2Aston Martin Lagonda Limited
- Systems, apparatus, and methods for inducing enhanced radical ignition in internal combustion engines using a radical chemicals generator25 Nov 2025US 12,480,435 B2Radical Combustion Technologies, LLC
- Ammonia-rich combustion coupled dual-mode prechamber ammonia-fueled engine control system25 Nov 2025US 12,480,453 B2Tianjin University
- Gas valve for an internal combustion engine23 Jul 2026US 2026/0210284 A1
- Divided-chamber gas engine21 May 2026US 2026/0139617 A1Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Systems, apparatus, and methods for inducing enhanced radical ignition in internal combustion engines using a radical chemicals generator7 May 2026US 2026/0126001 A1Radical Combustion Technologies, LLC
- Internal combustion engine26 Feb 2026US 2026/0055722 A1
- Hydrogen and oxygen injection in an active pre-chamber ignition engine5 Feb 2026US 2026/0036105 A1Purdue Research Foundation
Most cited
By later US patents
- Internal combustion engine with auxiliary combustion chamber1,410US 4,106,446 AKabushiki Kaisha Toyota Chuo Kenkyusho · 1978
- Catalytic-compression timed ignition77US 5,109,817 AAltronic, Inc. · 1992
- Fuel combustion system, method, and nozzle member therefor65US 5,024,193 ACaterpillar Inc. · 1991
- Internal combustion engine with a methanol reforming system60US 4,230,072 ANippon Soken, Inc. · 1980
- Use of prechambers with dual fuel source engines57US 8,925,518 B1Woodward, Inc. · 2015