F02B 23/0624
Swirl flow
Official title: {Swirl flow}
F02B23/0624 (Swirl flow) appears on 148 US grants and 92 published applications in this corpus.
Search patents in F02B- Granted patents
- 148
- Published applications
- 92
- Assignees
- 70
- Inventors
- 300
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 7 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 2 |
| 2003 | 4 | 3 |
| 2004 | 3 | 2 |
| 2005 | 1 | 0 |
| 2006 | 2 | 2 |
| 2007 | 2 | 5 |
| 2008 | 3 | 0 |
| 2009 | 2 | 3 |
| 2010 | 1 | 3 |
| 2011 | 3 | 6 |
| 2012 | 1 | 3 |
| 2013 | 3 | 3 |
| 2014 | 3 | 8 |
| 2015 | 4 | 8 |
| 2016 | 10 | 8 |
| 2017 | 4 | 4 |
| 2018 | 9 | 6 |
| 2019 | 6 | 7 |
| 2020 | 6 | 9 |
| 2021 | 7 | 5 |
| 2022 | 5 | 2 |
| 2023 | 1 | 1 |
| 2024 | 1 | 0 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Piston with combustion stabilizing bowl4 Aug 2026US 12,698,734 B2Caterpillar Inc.
- Piston for compression-ignition engine having antebowl and engine operating strategy utilizing same8 Jul 2025US 12,352,200 B2Caterpillar Inc.
- Piston bowl geometry, cuff and top land interaction for reduced hydrocarbons, improved combustion efficiency, and piston temperature13 Feb 2024US 11,898,488 B2Caterpillar Inc.
- Opposed-piston engine24 Oct 2023US 11,795,867 B2Mitsubishi Heavy Industries, Ltd.
- Method for operating an internal combustion engine for a motor vehicle, and internal combustion engine for a motor vehicle27 Sep 2022US 11,454,191 B2Daimler AG
- Wall-guided spark assistance for cold operations in gasoline compression ignition engines16 Jul 2026US 2026/0201828 A1Aramco Services Company
- Piston with combustion stabilizing bowl25 Sep 2025US 2025/0297569 A1Caterpillar Inc.
- Opposed-piston engine19 Jan 2023US 2023/0014414 A1Mitsubishi Heavy Industries, Ltd.
- Piston bowl geometry, cuff and top land interaction for reduced hydrocarbons, improved combustion efficiency, and piston temperature17 Nov 2022US 2022/0364498 A1Caterpillar Inc.
- Piston bowl geometries for internal combustion engines3 Feb 2022US 2022/0034279 A1FEV GmbH
Most cited
By later US patents
- Combustion system for direct injection diesel engines95US 6,553,960 B1Yanmar Co., Ltd. · 2003
- Combustion engine71US 6,213,086 B1AVL List GmbH · 2001
- Direct injection type internal combustion engine55US 6,799,551 B2Kabushiki Kaisha Toyota Chuo Kenkyusho · 2004
- Gas-fueled, compression ignition engine with maximized pilot ignition intensity52US 6,598,584 B2Clean Air Partners, Inc. · 2003
- Multi-fuel compression ignition engine50US 7,036,482 B2Clean Air Power, Inc. · 2006