F02B 31/08
Modifying induction systems for imparting a rotation to the charge in the
Official title: having multiple air inlets
F02B31/08 (Modifying induction systems for imparting a rotation to the charge in the) appears on 631 US grants and 288 published applications in this corpus.
Search patents in F02B- Granted patents
- 631
- Published applications
- 288
- Assignees
- 137
- Inventors
- 1,112
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 16 | 0 |
| 1981 | 30 | 0 |
| 1982 | 10 | 0 |
| 1983 | 5 | 0 |
| 1984 | 18 | 0 |
| 1985 | 17 | 0 |
| 1986 | 13 | 0 |
| 1987 | 15 | 0 |
| 1988 | 13 | 0 |
| 1989 | 12 | 0 |
| 1990 | 8 | 0 |
| 1991 | 5 | 0 |
| 1992 | 6 | 0 |
| 1993 | 14 | 0 |
| 1994 | 14 | 0 |
| 1995 | 9 | 0 |
| 1996 | 17 | 0 |
| 1997 | 28 | 0 |
| 1998 | 33 | 0 |
| 1999 | 26 | 0 |
| 2000 | 24 | 0 |
| 2001 | 27 | 13 |
| 2002 | 17 | 25 |
| 2003 | 32 | 22 |
| 2004 | 26 | 25 |
| 2005 | 17 | 21 |
| 2006 | 27 | 17 |
| 2007 | 18 | 16 |
| 2008 | 11 | 11 |
| 2009 | 6 | 11 |
| 2010 | 10 | 19 |
| 2011 | 9 | 2 |
| 2012 | 5 | 8 |
| 2013 | 8 | 4 |
| 2014 | 4 | 4 |
| 2015 | 4 | 9 |
| 2016 | 3 | 10 |
| 2017 | 6 | 5 |
| 2018 | 11 | 11 |
| 2019 | 7 | 17 |
| 2020 | 13 | 12 |
| 2021 | 19 | 19 |
| 2022 | 11 | 3 |
| 2023 | 3 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
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- Gas intake device having two asymmetrical intake ducts14 Feb 2023US 11,578,644 B2Ifp Energies Nouvelles
- Engine24 Jan 2023US 11,560,828 B2Subaru Corporation
- Gas intake device comprising an oriented masking element22 Nov 2022US 11,506,113 B2Ifp Energies Nouvelles
- 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.
- Stratified nitrogen enriched air (nea) strategies and methods to reduce nox emissions from engines31 Jul 2025US 2025/0243799 A1Saudi Arabian Oil Company
- Parallel Intake Valve Tumble Flow Engine9 Mar 2023US 2023/0077310 A1Southwest Research Institute
- Gas intake device having two asymmetrical intake ducts2 Jun 2022US 2022/0170412 A1Ifp Energies Nouvelles
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By later US patents
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- System and method for engine starting160US 7,159,568 B1Ford Global Technologies, LLC · 2007
- System and method for engine fuel blend control110US 7,287,492 B2Ford Global Technologies, LLC · 2007
- Exhaust gas purification device for an internal combustion engine105US 5,732,554 AToyota Jidosha Kabushiki Kaisha · 1998
- Method for controlling injection timing of an internal combustion engine103US 7,278,396 B2Ford Global Technologies, LLC · 2007