F02B 2275/14
Direct injection into combustion chamber
F02B2275/14 (Direct injection into combustion chamber) appears on 1,063 US grants and 393 published applications in this corpus.
Search patents in F02B- Granted patents
- 1,063
- Published applications
- 393
- Assignees
- 330
- Inventors
- 1,811
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 21 | 0 |
| 1977 | 19 | 0 |
| 1978 | 22 | 0 |
| 1979 | 21 | 0 |
| 1980 | 24 | 0 |
| 1981 | 27 | 0 |
| 1982 | 18 | 0 |
| 1983 | 23 | 0 |
| 1984 | 33 | 0 |
| 1985 | 37 | 0 |
| 1986 | 20 | 0 |
| 1987 | 35 | 0 |
| 1988 | 24 | 0 |
| 1989 | 32 | 0 |
| 1990 | 40 | 0 |
| 1991 | 39 | 0 |
| 1992 | 41 | 0 |
| 1993 | 39 | 0 |
| 1994 | 33 | 0 |
| 1995 | 32 | 0 |
| 1996 | 48 | 0 |
| 1997 | 24 | 0 |
| 1998 | 25 | 0 |
| 1999 | 14 | 0 |
| 2000 | 17 | 0 |
| 2001 | 15 | 6 |
| 2002 | 9 | 12 |
| 2003 | 24 | 29 |
| 2004 | 29 | 38 |
| 2005 | 26 | 45 |
| 2006 | 28 | 43 |
| 2007 | 39 | 29 |
| 2008 | 24 | 23 |
| 2009 | 11 | 25 |
| 2010 | 13 | 20 |
| 2011 | 23 | 22 |
| 2012 | 12 | 13 |
| 2013 | 18 | 8 |
| 2014 | 17 | 10 |
| 2015 | 9 | 12 |
| 2016 | 16 | 8 |
| 2017 | 0 | 4 |
| 2018 | 8 | 3 |
| 2019 | 4 | 13 |
| 2020 | 8 | 10 |
| 2021 | 10 | 9 |
| 2022 | 4 | 4 |
| 2023 | 4 | 3 |
| 2024 | 1 | 2 |
| 2025 | 2 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Method and systems for a direct fuel injection injector2 Jan 2024US 11,859,586 B2Saudi Arabian Oil Company
- Method for control of advanced combustion through split direct injection of high heat of vaporization fuel or water fuel mixtures5 Dec 2023US 11,834,983 B2The Research Foundation for The State University of New York
- Piston for reciprocating within a cylinder in an internal combustion engine18 Jun 2026US 2026/0168460 A1Cummins Inc.
- Hydrogen engine14 Aug 2025US 2025/0257684 A1Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Thrust control method for an airbreathing jet engine22 Aug 2024US 2024/0280046 A1ROLLS-ROYCE plc
- Fuel agnostic compression ignition engine13 Jun 2024US 2024/0191649 A1ClearFlame Engines, Inc.
- Engine system and operating method using matched fuel injector and piston for optimized spray jet interaction with combustion bowl2 Mar 2023US 2023/0065121 A1Caterpillar Inc.
Most cited
By later US patents
- Method and apparatus for operation of combustion engines205US 6,155,212 A2000
- Priming reservoir and volume compensation device for hydraulic unit injector fuel system168US 5,245,970 ANavistar International Transportation Corp. · 1993
- Apparatus and method for reducing emissions in a dual combustion mode diesel engine156US 5,875,743 ASouthwest Research Institute · 1999
- Hydraulically-actuated electronically-controlled unit injector fuel system having variable control of actuating fluid pressure125US 5,191,867 ACaterpillar Inc. · 1993
- Method and apparatus for improved operation of internal combustion engines115US 5,343,699 A1994