F02B 23/0687
Multiple bowls in the piston
Official title: {Multiple bowls in the piston, e.g. one bowl per fuel spray jet}
F02B23/0687 (Multiple bowls in the piston) appears on 36 US grants and 38 published applications in this corpus.
Search patents in F02B- Granted patents
- 36
- Published applications
- 38
- Assignees
- 34
- Inventors
- 126
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 2 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 3 |
| 2010 | 0 | 1 |
| 2011 | 1 | 2 |
| 2012 | 0 | 2 |
| 2013 | 4 | 1 |
| 2014 | 0 | 2 |
| 2015 | 0 | 2 |
| 2016 | 4 | 2 |
| 2017 | 0 | 1 |
| 2018 | 2 | 0 |
| 2019 | 2 | 5 |
| 2020 | 5 | 4 |
| 2021 | 1 | 2 |
| 2022 | 2 | 3 |
| 2023 | 1 | 1 |
| 2024 | 0 | 1 |
| 2025 | 2 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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
- Piston and an internal combustion engine system14 Oct 2025US 12,442,347 B2Volvo Truck Corporation
- Piston bowls17 Jan 2023US 11,555,469 B2Achates Power, Inc.
- Piston crown for a combustion system and an associated method thereof27 Dec 2022US 11,536,221 B2Transportation IP Holdings, LLC
- Systems, apparatus, and methods for inducing enhanced radical ignition in internal combustion engines using a radical chemicals generator11 Oct 2022US 11,466,608 B2Radical Combustion Technologies, LLC
- Piston for reciprocating within a cylinder in an internal combustion engine18 Jun 2026US 2026/0168460 A1Cummins Inc.
- 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
- A piston and an internal combustion engine system6 Feb 2025US 2025/0043745 A1Volvo Truck Corporation
- Systems, apparatus, and methods for inducing enhanced radical ignition in internal combustion engines using a radical chemicals generator8 Feb 2024US 2024/0044282 A1Radical Combustion Technologies, LLC
- Systems, apparatus, and methods for inducing enhanced radical ignition in internal combustion engines using a radical chemicals generator9 Feb 2023US 2023/0042331 A1Radical Combustion Technologies, LLC
Most cited
By later US patents
- Open chamber diesel engine having a piston with recesses therein33US 5,285,755 AChrysler Corporation · 1994
- Method and apparatus for reducing the operating compression ratios of compression ignition engines25US 4,444,166 AKovacs Research Center, Inc. · 1984
- High speed indirect injection diesel engine25US 5,417,189 AChrysler Corporation · 1995
- Double bowl piston25US 7,185,614 B2Caterpillar Inc. · 2007
- Piston bowl with spray jet targets23US 8,459,229 B2Southwest Research Institute · 2013