F02D 19/0684
High pressure fuel injection systems
Official title: {High pressure fuel injection systems; Details on pumps, rails or the arrangement of valves in the fuel supply and return systems}
F02D19/0684 (High pressure fuel injection systems) appears on 164 US grants and 142 published applications in this corpus.
Search patents in F02D- Granted patents
- 164
- Published applications
- 142
- Assignees
- 93
- Inventors
- 328
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 2 |
| 2003 | 1 | 1 |
| 2004 | 4 | 4 |
| 2005 | 1 | 2 |
| 2006 | 2 | 2 |
| 2007 | 1 | 5 |
| 2008 | 5 | 4 |
| 2009 | 5 | 8 |
| 2010 | 3 | 13 |
| 2011 | 13 | 14 |
| 2012 | 8 | 10 |
| 2013 | 6 | 12 |
| 2014 | 7 | 15 |
| 2015 | 11 | 11 |
| 2016 | 11 | 9 |
| 2017 | 7 | 3 |
| 2018 | 7 | 4 |
| 2019 | 6 | 4 |
| 2020 | 4 | 8 |
| 2021 | 5 | 0 |
| 2022 | 4 | 0 |
| 2023 | 1 | 1 |
| 2024 | 2 | 0 |
| 2025 | 7 | 6 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method of adding gaseous oxygen additive derived from an oxygen concentrator to diesel fuel to improve combustion21 Jul 2026US 12,687,143 B2H2Diesel, Inc.
- Engine system and method for determining fuel characteristics12 May 2026US 12,624,668 B2Caterpillar Inc.
- Systems and methods for at-cylinder fuel switching27 Jan 2026US 12,535,041 B2Caterpillar Inc.
- Dual fuel system and operating strategy metering fuel via varied fuel pump output2 Dec 2025US 12,486,809 B2Caterpillar Inc.
- Systems and methods for providing a diesel-methanol emulsion for direct injection engines30 Sep 2025US 12,429,005 B2Caterpillar Inc.
- Fuel system that prevents vapor lock in powertrains converted to run on a volatile alternative fuel20 Aug 2026US 2026/0243218 A1ICOM North America LLC
- System and method of adding gaseous oxygen additive derived from an oxygen concentrator to diesel fuel to improve combustion11 Jun 2026US 2026/0160223 A1H2Diesel, Inc.
- Multi-walled fuel system, method of operating multi-walled fuel system, and engine containing multi-walled fuel system23 Apr 2026US 2026/0110270 A1Cummins Inc.
- Engine system and method for determining fuel characteristics22 Jan 2026US 2026/0022672 A1Caterpillar Inc.
- Dual fuel system and operating strategy metering fuel via varied fuel pump output9 Oct 2025US 2025/0314211 A1Caterpillar Inc.
Most cited
By later US patents
- Dual fuel supply system for a direct-injection system of a diesel engine with on-board mixing169US 8,973,560 B2Dgc Industries Pty Ltd · 2015
- Fuel blending system method and apparatus134US 5,469,830 ACessna Aircraft Company · 1995
- Fuel supply apparatus for an internal combustion engine128US 6,711,893 B2ExxonMobil Research and Engineering Company · 2004
- Waste oil management system102US 5,336,396 A1994
- Fuel supply apparatus of internal combustion engine102US 6,332,448 B1Nissan Motor Co., Ltd. · 2001