F02B 31/04
Modifying induction systems for imparting a rotation to the charge in the
Official title: by means within the induction channel, e.g. deflectors
F02B31/04 (Modifying induction systems for imparting a rotation to the charge in the) appears on 441 US grants and 346 published applications in this corpus.
Search patents in F02B- Granted patents
- 441
- Published applications
- 346
- Assignees
- 138
- Inventors
- 857
- Latest grant
- 18 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 10 | 0 |
| 1983 | 5 | 0 |
| 1984 | 23 | 0 |
| 1985 | 8 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 2 | 0 |
| 1989 | 8 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 5 | 0 |
| 1999 | 8 | 0 |
| 2000 | 5 | 0 |
| 2001 | 13 | 5 |
| 2002 | 4 | 14 |
| 2003 | 18 | 20 |
| 2004 | 29 | 26 |
| 2005 | 17 | 17 |
| 2006 | 24 | 13 |
| 2007 | 16 | 15 |
| 2008 | 10 | 24 |
| 2009 | 13 | 30 |
| 2010 | 13 | 17 |
| 2011 | 17 | 13 |
| 2012 | 11 | 6 |
| 2013 | 12 | 8 |
| 2014 | 7 | 15 |
| 2015 | 7 | 14 |
| 2016 | 7 | 18 |
| 2017 | 18 | 21 |
| 2018 | 18 | 12 |
| 2019 | 17 | 17 |
| 2020 | 14 | 15 |
| 2021 | 14 | 10 |
| 2022 | 8 | 5 |
| 2023 | 4 | 4 |
| 2024 | 4 | 2 |
| 2025 | 1 | 1 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
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- Engine and vehicle having the same9 Apr 2024US 11,952,957 B2BYD Company Limited
- Passive prechamber fueling device and method23 Jul 2026US 2026/0210285 A1Aramco Services Company
- Swirl generating intake ports for internal combustion engines16 Apr 2026US 2026/0104004 A1Cummins Inc.
- Land vehicle with an engine comprising an air intake duct provided with a device for selectively generating an air tumble in the combustion chamber26 Mar 2026US 2026/0085642 A1Ferrari S.P. A.
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Most cited
By later US patents
- In-cylinder direct-injection spark-ignition engine98US 6,138,639 ANissan Motor Co., Ltd. · 2000
- Swirl control system for lean-burn engines76US 4,998,518 ANissan Motor Co., Ltd. · 1991
- Engine with two port fuel injectors67US 7,647,916 B2Ford Global Technologies, LLC · 2010
- Dual intake valve type internal combustion engine55US 4,285,310 AToyota Jidosha Kogyo Kabushiki Kaisha · 1981
- Direct injection type internal combustion engine55US 6,799,551 B2Kabushiki Kaisha Toyota Chuo Kenkyusho · 2004